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Electrical grid

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701: 45: 1339: 829: 519: 685: 1487: 507: 898: 495: 3908: 4487: 1389:, boiler forced-draft combustion air blowers, and for fuel preparation. It is uneconomical to provide such a large standby capacity at each station, so black-start power must be provided over designated tie lines from another station. Often hydroelectric power plants are designated as the black-start sources to restore network interconnections. A hydroelectric station needs very little initial power to start (just enough to open the intake gates and provide 595:
by receiving power from different sources. For example, one region may be producing cheap hydro power during high water seasons, but in low water seasons, another area may be producing cheaper power through wind, allowing both regions to access cheaper energy sources from one another during different times of the year. Neighboring utilities also help others to maintain the overall system frequency and also help manage tie transfers between utility regions.
1157: 890: 619: 541: 1736:. The frequency was standardised at 50 Hz, and the 225 kV network replaced 110 kV and 120 kV. Since 1956, service voltage has been standardised at 220/380 V, replacing the previous 127/220 V. During the 1970s, the 400 kV network, the new European standard, was implemented. The end user service voltage will progressively change to 230/400 V +/-10% since may 29, 1986. 875:
This tree-like structure grows outward from the substation, but for reliability reasons, usually contains at least one unused backup connection to a nearby substation. This connection can be enabled in case of an emergency, so that a portion of a substation's service territory can be alternatively fed by another substation.
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in 1919, and 36,528 in 1938. At the same time, these close networks began to interconnect: Paris in 1907 at 12 kV, the Pyrénées in 1923 at 150 kV, and finally almost all of the country interconnected by 1938 at 220 kV. In 1946, the grid was the world's most dense. That year the state nationalised the
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is a grid management technique where retail or wholesale customers are requested or incentivised either electronically or manually to reduce their load. Currently, transmission grid operators use demand response to request load reduction from major energy users such as industrial plants. Technologies
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allow for economies of scale, allowing energy to be purchased from large, efficient sources. Utilities can draw power from generator reserves from a different region to ensure continuing, reliable power and diversify their loads. Interconnection also allows regions to have access to cheap bulk energy
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can be configured for black start, providing another option in places without suitable hydroelectric plants. In 2017 a utility in Southern California has successfully demonstrated the use of a battery energy storage system to provide a black start, firing up a combined cycle gas turbine from an idle
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Failures are usually associated with generators or power transmission lines tripping circuit breakers due to faults leading to a loss of generation capacity for customers, or excess demand. This will often cause the frequency to reduce, and the remaining generators will react and together attempt to
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Because the power is often generated far from where it is consumed, the transmission system can cover great distances. For a given amount of power, transmission efficiency is greater at higher voltages and lower currents. Therefore, voltages are stepped up at the generating station, and stepped down
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Normally, the electric power used within the plant is provided from the station's own generators. If all of the plant's main generators are shut down, station service power is provided by drawing power from the grid through the plant's transmission line. However, during a wide-area outage, off-site
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can be used to connect two alternating current interconnection networks which are not synchronized with each other. This provides the benefit of interconnection without the need to synchronize an even wider area. For example, compare the wide area synchronous grid map of Europe with the map of HVDC
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Although the speed is kept largely constant, small deviations from the nominal system frequency are very important in regulating individual generators and are used as a way of assessing the equilibrium of the grid as a whole. When the grid is lightly loaded the grid frequency runs above the nominal
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from which feeders fan out in all directions across the countryside. These feeders carry three-phase power, and tend to follow the major streets near the substation. As the distance from the substation grows, the fanout continues as smaller laterals spread out to cover areas missed by the feeders.
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is an enhancement of the 20th century electrical grid, using two-way communications and distributed so-called intelligent devices. Two-way flows of electricity and information could improve the delivery network. Research is mainly focused on three systems of a smart grid – the infrastructure
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to customers. In that last step, voltage is stepped down again to the required service voltage. Power stations are typically built close to energy sources and far from densely populated areas. Electrical grids vary in size and can cover whole countries or continents. From small to large there are
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The benefits of synchronous zones include pooling of generation, resulting in lower generation costs; pooling of load, resulting in significant equalizing effects; common provisioning of reserves, resulting in cheaper primary and secondary reserve power costs; opening of the market, resulting in
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Concerns with smart grid technology mostly focus on smart meters, items enabled by them, and general security issues. Roll-out of smart grid technology also implies a fundamental re-engineering of the electricity services industry, although typical usage of the term is focused on the technical
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The smart grid represents the full suite of current and proposed responses to the challenges of electricity supply. Numerous contributions to the overall improvement of the efficiency of energy infrastructure are anticipated from the deployment of smart grid technology, in particular including
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Each of the interconnects in North America are run at a nominal 60 Hz, while those of Europe run at 50 Hz. Neighbouring interconnections with the same frequency and standards can be synchronized and directly connected to form a larger interconnection, or they may share power without
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required transmission line owners to allow electric generation companies open access to their network and led to a restructuring of how the electric industry operated in an effort to create competition in power generation. No longer were electric utilities built as vertical monopolies, where
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A large failure in one part of the grid — unless quickly compensated for — can cause current to re-route itself to flow from the remaining generators to consumers over transmission lines of insufficient capacity, causing further failures. One downside to a widely connected grid is thus the
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In a synchronous grid all the generators must run at the same frequency, and must stay very nearly in phase with each other and the grid. Generation and consumption must be balanced across the entire grid, because energy is consumed as it is produced. For rotating generators, a local
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is the maximum load. Historically, baseload was commonly met by equipment that was relatively cheap to run, that ran continuously for weeks or months at a time, but globally this is becoming less common. The extra peak demand requirements are sometimes produced by expensive
1672:, with long-distance power transmission it became possible to interconnect stations to balance the loads and improve load factors. Historically, transmission and distribution lines were owned by the same company, but starting in the 1990s, many countries have 598:
Electricity Interconnection Level (EIL) of a grid is the ratio of the total interconnector power to the grid divided by the installed production capacity of the grid. Within the EU, it has set a target of national grids reaching 10% by 2020, and 15% by 2030.
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Developments in battery storage have enabled commercially viable projects to store energy during peak production and release during peak demand, and for use when production unexpectedly falls giving time for slower responding resources to be brought online.
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Distribution is the final stage in the delivery of power; it carries electricity from the transmission system to individual consumers. Substations connect to the transmission system and lower the transmission voltage to medium voltage ranging between
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increases, the number of people with access to grid electricity is growing. About 840 million people (mostly in Africa), which is ca. 11% of the World's population, had no access to grid electricity in 2017, down from 1.2 billion in 2010.
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Substations may perform many different functions but usually transform voltage from low to high (step up) and from high to low (step down). Between the generator and the final consumer, the voltage may be transformed several times.
111:(AC) frequencies synchronized (so that voltage swings occur at almost the same time). This allows transmission of AC power throughout the area, connecting the electricity generators with consumers. Grids can enable more efficient 332:
A microgrid is a local grid that is usually part of the regional wide-area synchronous grid but which can disconnect and operate autonomously. It might do this in times when the main grid is affected by outages. This is known as
792:: typically a set of three conductors, one for each phase of current. The substation is organized around the buses, and they are connected to incoming lines, transformers, protection equipment, switches, and the outgoing lines. 3561: 2058: 1091:) to deal with failures as well as variation in demand. In addition generators can be off-line for maintenance or other reasons, such as availability of energy inputs (fuel, water, wind, sun etc.) or pollution constraints. 1059:
For timekeeping purposes, the nominal frequency will be allowed to vary in the short term, but is adjusted to prevent line-operated clocks from gaining or losing significant time over the course of a whole 24 hour period.
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in 1901, and by 1912 had developed into the largest integrated power system in Europe. Merz was appointed head of a parliamentary committee and his findings led to the Williamson Report of 1918, which in turn created the
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In addition, there's often central control, which can change the parameters of the AGC systems over timescales of a minute or longer to further adjust the regional network flows and the operating frequency of the grid.
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However, for conventional conductors one of the main losses are resistive losses which are a square law on current, and depend on distance. High voltage AC transmission lines can lose 1-4% per hundred miles. However,
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if all countries in the world were to make do with their own resources, there would be even more energy poverty in the world than there is now. Currently, 1.4 billion people are not connected to an electricity grid
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systems across the network that generators should reduce their output. Conversely, when the grid is heavily loaded, the frequency naturally slows, and governors adjust their generators so that more power is output
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Compared to larger grids, microgrids typically use a lower voltage distribution network and distributed generators. Microgrids may not only be more resilient, but may be cheaper to implement in isolated areas.
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generation, transmission and distribution were handled by a single company. Now, the three stages could be split among various companies, in an effort to provide fair access to high voltage transmission. The
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Network diagram of a high voltage transmission system, showing the interconnection between the different voltage levels. This diagram depicts the electrical structure of the network, rather than its physical
130:. Also as electric grids modernize and introduce computer technology, cyber threats start to become a security risk. Particular concerns relate to the more complex computer systems needed to manage grids. 1113:(i.e. cheapest first) and sometimes their environmental impact. Thus cheap electricity providers tend to be run flat out almost all the time, and the more expensive producers are only run when necessary. 1320:), in order to prevent uncontrolled service disruptions such as power outages (widespread blackouts) or equipment damage. Utilities may impose load shedding on service areas via targeted blackouts, 2852: 2135:
Buevich, Maxim; Schnitzer, Dan; Escalada, Tristan; Jacquiau-Chamski, Arthur; Rowe, Anthony (2014). "Fine-grained remote monitoring, control and pre-paid electrical service in rural microgrids".
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required by all utility customers within a given region. In these situations, overall demand must be lowered, either by turning off service to some devices or cutting back the supply voltage (
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system, the management system, and the protection system. Electronic power conditioning and control of the production and distribution of electricity are important aspects of the smart grid.
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regulates the driving torque, maintaining almost constant rotation speed as loading changes. Energy is stored in the immediate short term by the rotational kinetic energy of the generators.
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capacity), which in turn can be used to start the main power station generators. Generating plants using steam turbines require station service power of up to 10% of their capacity for
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Despite novel institutional arrangements and network designs, power delivery infrastructures is experiencing aging across the developed world. Contributing factors include:
1052:). When generators have identical droop speed control settings it ensures that multiple parallel generators with the same settings share load in proportion to their rating. 560:
is a wide-area transmission network that is intended to make possible the trade of high volumes of electricity across great distances. It is sometimes also referred to as a
1646:. In the industrialized world, cities had networks of piped gas, used for lighting. But gas lamps produced poor light, wasted heat, made rooms hot and smokey, and gave off 1519:. Smart grids could also monitor/control residential devices that are noncritical during periods of peak power consumption, and return their function during nonpeak hours. 465:), or with variable-frequency transformers (VFTs), which permit a controlled flow of energy while also functionally isolating the independent AC frequencies of each side. 2178:
Buevich, Maxim; Zhang, Xiao; Schnitzer, Dan; Escalada, Tristan; Jacquiau-Chamski, Arthur; Thacker, Jon; Rowe, Anthony (1 January 2015). "Short Paper: Microgrid Losses".
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Saleh, M. S.; Althaibani, A.; Esa, Y.; Mhandi, Y.; Mohamed, A. A. (October 2015). "Impact of clustering microgrids on their stability and resilience during blackouts".
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Kirubi, et al. "Community-Based Electric Micro-Grids Can Contribute to Rural Development: Evidence from Kenya." World Development, vol. 37, no. 7, 2009, pp. 1208–1221.
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Demand response can be achieved at the wholesale level with major energy users such as industrial plants curtailing power use and receiving payment for participating.
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current to the generator field coils), and can put a large block of power on line very quickly to allow start-up of fossil-fuel or nuclear stations. Certain types of
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loads, and even nonlinear loads, with electricity provided by generators and distribution and transmission equipment that are not perfectly reliable. Often grids use
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and other studies foresee widescale grid defection. However grid defection may be less likely in places such as Germany that have greater power demands in winter.
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gained binding powers in the United States in 2006, and has advisory powers in the applicable parts of Canada and Mexico. The U.S. government has also designated
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can have half the losses of AC. Over very long distances, these efficiencies can offset the additional cost of the required AC/DC converter stations at each end.
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Step-down substation: these transformers lower the voltage coming from the transmission lines which can be used in industry or sent to a distribution substation.
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Early electric energy was produced near the device or service requiring that energy. In the 1880s, electricity competed with steam, hydraulics, and especially
2323: 3002: 2845: 1787:—is an important power supplier. In 2019, it completed the power supply project of China's important electrified railways in its operating areas, such as 1440:
planning and engineering are ineffective in addressing current problems of aged equipment, obsolete system layouts, and modern deregulated loading levels.
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Resistance to distributed generation among grid operators may encourage providers to leave the grid and instead distribute power to smaller geographies.
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to raise the voltage coming from the generators and power plants so that power can be transmitted long distances more efficiently, with smaller currents.
587:(HVDC) to transmit electricity long distances. The latest generation of HVDC power lines can transmit energy with losses of only 1.6% per 1000 km. 1451:, operating of system using concepts and procedures that worked in vertically integrated industry exacerbate the problem under a deregulated industry. 3433: 1799:, et cetera, providing power supply guarantee for 110 traction stations, and its cumulative power line construction length reached 6,586 kilometres. 1739:
In the United States in the 1920s, utilities formed joint-operations to share peak load coverage and backup power. In 1934, with the passage of the
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An entire synchronous grid runs at the same frequency, neighbouring grids would not be synchronised even if they run at the same nominal frequency.
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One disadvantage of a wide-area synchronous grid is that problems in one part can have repercussions across the whole grid. For example, in 2018
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Grids are designed to supply electricity to their customers at largely constant voltages. This has to be achieved with varying demand, variable
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system. Intentional brownouts are used for load reduction in an emergency. The reduction lasts for minutes or hours, as opposed to short-term
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Borberly, A. and Kreider, J. F. (2001). Distributed Generation: The Power Paradigm for the New Millennium. CRC Press, Boca Raton, FL. 400 pgs.
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to connect and monitor the above, with wireless as a backup. Sufficient spare if "dark" capacity to ensure failover, often leased for revenue.
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pilot program: sixty-four solar panels with a peak capacity of 23.7 kW on five houses and a battery with a storage capacity of 15 kWh.
2806:"Power Management Analysis of a Photovoltaic and Battery Energy Storage-Based Smart Electrical Car Park Providing Ancillary Grid Services" 1134:. A central authority is usually designated to facilitate communication and develop protocols to maintain a stable grid. For example, the 308: 1414:, leading to customer interruption rates affecting the economy and society; also, older assets and facilities lead to higher inspection 3697: 3217:
Torriti, Jacopo (2012). "Demand Side Management for the European Supergrid: Occupancy variances of European single-person households".
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However, in practice, they are never run flat out simultaneously. Typically, some generators are kept running at lower output powers (
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General layout of electricity grids. Voltages and depictions of electrical lines are typical for Germany and other European systems.
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Philippe CARRIVE, Réseaux de distribution - Structure et planification, volume D4210, collection Techniques de l'ingénieur, page 6.
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Mazer, A. (2007). Electric Power Planning for Regulated and Deregulated Markets. John, Wiley, and Sons, Inc., Hoboken, NJ. 313pgs.
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to take advantage of economies of scale and moved to centralized power generation, distribution, and system management. After the
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design. A substation receives its power from the transmission network, the power is stepped down with a transformer and sent to a
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Smart grid policy is organized in Europe as Smart Grid European Technology Platform. Policy in the United States is described in
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Although electrical grids are widespread, as of 2016, 1.4 billion people worldwide were not connected to an electricity grid. As
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Cooper, Christopher; Sovacool, Benjamin K. (February 2013). "Miracle or mirage? The promise and peril of desert energy part 1".
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may be an effect of disruption of an electrical grid, or may occasionally be imposed in an effort to reduce load and prevent a
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is the maximum power output on a grid that is immediately available over a given time period, and is a far more useful figure.
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However, if the demand of electricity exceed the capacity of a local power grid, it will cause safety issue like burning out.
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standardized the nation's electricity supply and established the first synchronized AC grid, running at 132 kilovolts and 50
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such as smart metering can encourage customers to use power when electricity is plentiful by allowing for variable pricing.
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Power failures are particularly critical at sites where the environment and public safety are at risk. Institutions such as
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Fang, Xi; Misra, Satyajayant; Xue, Guoliang; Yang, Dejun (2012). "Smart Grid — the New and Improved Power Grid: A Survey".
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allowed incentives and loan guarantees for alternative energy production and advance innovative technologies that avoided
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or by agreements with specific high-use industrial consumers to turn off equipment at times of system-wide peak demand.
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In China, electrification began in the 1950s. In August 1961, the electrification of the Baoji-Fengzhou section of the
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possibility of long-term contracts and short term power exchanges; and mutual assistance in the event of disturbances.
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power from the grid is not available. In the absence of grid power, a so-called black start needs to be performed to
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Stone Edge Farm Winery: micro-turbine, fuel-cell, multiple battery, hydrogen electrolyzer, and PV enabled winery in
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Diagram of an electrical grid (generation system in red, transmission system in blue, distribution system in green)
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in ways that have led to the separation of the electricity transmission business from the distribution business.
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The demand, or load on an electrical grid is the total electrical power being removed by the users of the grid.
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One conceptual plan of a super grid linking renewable sources across North Africa, the Middle East and Europe. (
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Proceedings of the 2nd ACM International Conference on Embedded Systems for Energy-Efficient Built Environments
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lagging behind what it should have been. The frequency dropped to 49.996 Hz. This caused certain kinds of
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trading across wide areas. In the ENTSO-E in 2008, over 350,000 megawatt hours were sold per day on the
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The sum of the power outputs of generators on the grid is the production of the grid, typically measured in
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Sayed, K.; Gabbar, H. A. (1 January 2017). "Chapter 18 – SCADA and smart energy grid control automation".
920:. Electrical energy is stored during times when electricity is plentiful and inexpensive (especially from 494: 4642: 4472: 4467: 4185: 4160: 4150: 4126: 4121: 3827: 1064: 823: 733: 679: 584: 81: 4688: 4647: 4387: 4105: 4075: 3852: 3281: 3252: 2728: 1733: 1692: 1673: 1343: 1084:) of the generators attached to an electrical grid might be considered to be the capacity of the grid. 725: 689: 590:
Electric utilities between regions are many times interconnected for improved economy and reliability.
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system serving countries of the former Soviet Union. Synchronous grids with ample capacity facilitate
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of importance and were given outlined restrictions and regulatory oversight of their operations. The
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IPSN-14 Proceedings of the 13th International Symposium on Information Processing in Sensor Networks
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are a generic name for any utility side device even if it is more capable e.g. a fiber optic router)
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that cannot be obtained in the current area and are forced to use existing, insufficient facilities.
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Distribution substation: these transform the voltage lower again for the distribution to end users.
450: 97:. The combined transmission and distribution network is part of electricity delivery, known as the 4798: 4713: 4662: 4356: 4346: 4336: 1744: 1367: 1240:
Power failures can be caused by faults at power stations, damage to electric transmission lines,
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Simplified grid energy flow with and without idealized energy storage for the course of one day
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located near the customer's premises. Distribution transformers again lower the voltage to the
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and transmission systems may not always meet peak demand requirements— the greatest amount of
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on transformers near to the consumers to adjust the voltage and keep it within specification.
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that are generators optimised to come on-line quickly but these too are becoming less common.
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Cuffe, Paul; Keane, Andrew (2017). "Visualizing the Electrical Structure of Power Systems".
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to many consumers. For example, there are four major interconnections in North America (the
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for backup and also a socket for connecting a generator during extended periods of outage.
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stabilize above the minimum. If that is not possible then a number of scenarios can occur.
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Electrical grids can be prone to malicious intrusion or attack; thus, there is a need for
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Khalilpour, R.; Vassallo, A. (2015). "Leaving the grid: An ambition or a real choice?".
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Obsolete system layout – older areas require serious additional substation sites and
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Aside from transformers, other major components or functions of substations include:
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Kantamneni, Abhilash; Winkler, Richelle; Gauchia, Lucia; Pearce, Joshua M. (2016).
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2015 International Conference on Smart Grid and Clean Energy Technologies (ICSGCE)
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Grids are nearly always synchronous, meaning all distribution areas operate with
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Power Systems in Emergencies - From Contingency Planning to Crisis Management
2648:"The basic things about substations you MUST know in the middle of the night!" 2146: 4813: 4793: 4739: 4427: 4215: 4100: 4080: 4011: 4001: 3958: 3842: 3797: 3731: 3652: 3175: 3054: 2831: 2549: 2364:(See "Operation of Power Systems" link for title page and table of contents.) 1994: 1792: 1355: 1249: 1110: 998: 656: 637: 219: 65: 3472: 2187: 1704:. The bill was the first step towards an integrated electricity system. The 1638:. Coal gas was first produced on customer's premises but later evolved into 1490:
Characteristics of a traditional system (left) versus the smart grid (right)
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In cities and towns of North America, the grid tends to follow the classic
804: 573: 3673:"After initial questions, government clears 100% Railways electrification" 3434:
Net metering changes could drive people off grid, Michigan researchers say
1105:
Most grid codes specify that the load is shared between the generators in
779:: used to automatically break a circuit and isolate a fault in the system. 4657: 4621: 4272: 4240: 4033: 4021: 3941: 3867: 3857: 3787: 2085:"Harmon'Yeu, première communauté énergétique à l'Île d'Yeu, signée Engie" 1985: 1875: 1530: 1508: 1448: 1333: 1313: 1184: 1161: 1106: 1017: 993: 937: 933: 759: 648: 569: 367: 105: 2134: 1582:) batteries or larger arrays of batteries recycled from these, or other 4672: 4616: 4563: 4235: 4230: 4043: 4026: 3882: 3737: 2822: 2805: 2255:"Stone Edge Farm — A Sandbox For Microgrid Development | CleanTechnica" 1512: 1495: 1479: 1423: 1279:, shelters and the like will usually have backup power sources such as 929: 535: 344:
A design goal is that a local area produces all of the energy it uses.
94: 38: 2540: 2432: 1354:
is the process of restoring an electric power station or a part of an
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Distribution networks are divided into two types, radial or network.
800: 667: 438: 373: 334: 327: 191: 86: 3306: 2452: 2450: 2037: 1951:"The geopolitics of renewable energy: Debunking four emerging myths" 1179:
is an intentional or unintentional drop in voltage in an electrical
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is a view of the world's hidden power infrastructure mapped in the
1669: 1647: 1635: 1444: 1382: 1268: 989: 618: 545: 441:(GW) of generation, and the widest region served being that of the 277: 272: 2229:"Microgrid at Stone Edge Farm Wins California Environmental Honor" 1767:
was completed and delivered for operation, becoming China's first
1592:
Electric surplus distribution by power lines and auto-smart switch
1522:
A smart grid includes a variety of operation and energy measures:
3986: 3976: 3007: 2447: 2289: 1566:, often financed by efficiency gains on municipal programs (e.g. 1381:(BSDG), which can be used to start larger generators (of several 713:
from a generating site, via a web of interconnected lines, to an
442: 73: 2892:
Electric power system basics: for the nonelectrical professional
2342:: Institute for Electrical Equipment and Power Plants (IAEW) at 848:. Primary distribution lines carry this medium voltage power to 3981: 2704:
Infrastructure : a field guide to the industrial landscape
2339: 1276: 871: 789: 782: 512:
The two major and three minor interconnections of North America
477: 473: 462: 351: 267: 3304: 2038:"A Survey of Techniques for Designing and Managing Microgrids" 943:
As of 2020, the largest form of grid energy storage is dammed
540: 27:
Interconnected network for delivering electricity to consumers
2177: 1713: 1169: 1165: 1142:, where it believes transmission bottlenecks have developed. 947:, with both conventional hydroelectric generation as well as 576:. In this context they are considered as a key technology to 485: 355: 3260: 785:: to control the flow of electricity, and isolate equipment. 376:, Kenya: a community-based diesel-powered micro-grid system. 3936: 3727: 3405:
The Economics of Grid Defection - Rocky Mountain Institute
3371:
Kumagai, J (2014). "The rise of the personal power plant".
840: 2988:
Willis, H. L., Welch, G. V., and Schrieber, R. R. (2001).
1776: 3465: 3463: 2322:
Haubrich, Hans-Jürgen; Denzel, Dieter (23 October 2008).
1373:
To provide a black start, some power stations have small
64:
from producers to consumers. Electrical grids consist of
3173: 2431:. Global Energy Interconnection (GEIDCO). Archived from 1237:) is a loss of the electric power to a particular area. 476:
used more power than it generated due to a dispute with
3599: 2469:
Mezősi, András; Pató, Zsuzsanna; Szabó, László (2016).
1346:, which required black-starting of generating stations. 992:
is the minimum load on the grid over any given period,
754:
The three main types of substations, by function, are:
3460: 2376:"Serbia, Kosovo power grid row delays European clocks" 2036:
Khaitan, Siddhartha Kumar; Venkatraman, Ramakrishnan.
337:, and it might run indefinitely on its own resources. 655:
of water or wind. Other energy sources include solar
37:"Power grid" redirects here. For the board game, see 1578:
resources, including the capacity to charge parked (
721:
at local substations for distribution to customers.
709:
Electric power transmission is the bulk movement of
628:
Electricity generation is the process of generating
4531: 2779:Sallam, Abdelhay A. & Malik, Om P. (May 2011). 1716:. This started operating as a national system, the 3670: 3335: 3161:United States Federal Energy Regulatory Commission 424:one large grid connects most of continental Europe 2804:Wang, Yingcheng; Gladwin, Daniel (January 2021). 1287:, are also required to have emergency power. The 1140:National Interest Electric Transmission Corridors 1043:frequency, and this is taken as an indication by 4811: 3075: 1708:led to the setting up of the National Grid. The 982:The graph of the demand over time is called the 958:Two alternatives to grid storage are the use of 457:synchronization via high-voltage direct current 80:to carry power over long distances, and finally 2468: 1891: 1136:North American Electric Reliability Corporation 3648:"Hong Kong Express Rail Link officially opens" 3030: 2503: 2392: 2321: 2035: 1811:: a specification for grid-connected equipment 1732:industry, by uniting the private companies as 1291:of a telephone exchange usually has arrays of 893:Simplified electrical grid with energy storage 817: 813:for power factor correction and grid stability 4517: 3753: 3693:"Beijing–Zhangjiakou intercity railway opens" 3620:. Xinhua Publishing House. 1989. p. 190. 3539:. North Northumberland Online. Archived from 2324:"Characteristics of interconnected operation" 2111:"A L'Île-d'Yeu, soleil pour tous… ou presque" 1743:(USA), electric utilities were recognized as 1436:Outdated engineering – traditional tools for 1410:Aging equipment – older equipment has higher 1362:to recover from a total or partial shutdown. 1358:to operation without relying on the external 1075: 387: 302: 3510: 2296:. 30 October 2008. p. 4. Archived from 2006: 2004: 3119: 3078:IEEE Communications Surveys & Tutorials 2803: 2783:. IEEE Computer Society Press. p. 21. 2778: 1841:"Energy: The missing link in globalization" 4524: 4510: 3760: 3746: 3698:National Development and Reform Commission 3253:"Smart Grids European Technology Platform" 2509: 2292:: Market Surveillance (HÜSt) group of the 358:, Yemen: community-owned solar microgrids. 309: 295: 133: 3454:"Grid defection and why we don't want it" 3282:"42 U.S. Code Subchapter IX - SMART GRID" 2821: 2539: 2494: 2332:Operation of Interconnected Power Systems 2001: 1984: 1974: 1874: 1864: 370:, Haiti: includes energy theft detection. 3767: 3671:Avishek G Dastidar (13 September 2018). 3036: 2992:. New York: Marcel Dekker, Inc. 551 pgs. 2926: 2915:, The Book Press Limited, Toronto, 1986 2697: 2695: 1948: 1838: 1485: 1337: 1155: 896: 888: 827: 699: 683: 617: 539: 480:, leading to the phase across the whole 43: 3513:"Kelvin to Weir, and on to GB SYS 2005" 3478: 3370: 3216: 2944:section 7.5 The 'Black Start' Situation 2706:(1st ed.). New York: W.W. Norton. 2464: 2462: 2029: 14: 4812: 2876:: CS1 maint: archived copy as title ( 2632:: CS1 maint: archived copy as title ( 1897: 1883:from the original on 5 February 2018. 1815:North American power transmission grid 1116: 1080:The sum of the maximum power outputs ( 912:) is a collection of methods used for 482:synchronous grid of Continental Europe 435:synchronous grid of Continental Europe 4505: 3741: 2913:Electric Power Challenges and Choices 2726: 2720: 2701: 2692: 2108: 2082: 3617:People's Republic of China Year Book 3593:"Journal Officiel n°0146, page 7895" 2990:Aging Power Delivery Infrastructures 2666: 2459: 1955:Energy Research & Social Science 1845:Energy Research & Social Science 1797:Zhengzhou–Wanzhou high-speed railway 4830:Electric power transmission systems 2746: 2652:EEP - Electrical Engineering Portal 2640: 1360:electric power transmission network 568:by smoothing local fluctuations of 564:. Super grids can support a global 60:) is an interconnected network for 24: 4755:Renewable energy commercialization 4438:Renewable energy commercialization 3525:from the original on 4 March 2009. 3511:Mr Alan Shaw (29 September 2005). 3488:United States Department of Energy 3130:10.1016/B978-0-12-805343-0.00018-8 2573:"Why Do We Use Three-Phase Power?" 1922: 1741:Public Utility Holding Company Act 1691:consulting partnership, built the 1608:Title 42 of the United States Code 1460: 969: 25: 4841: 4765:United States energy independence 3721: 3491:Federal Energy Management Program 3408:"The Economics of Grid Defection" 3286:LII / Legal Information Institute 2570: 2109:Wakim, Nabil (16 December 2020). 1614: 347:Example implementations include: 244:Electric power systems components 4486: 4485: 3906: 3701:. 6 January 2020. Archived from 3656:. 3 October 2018. Archived from 3011:. 13 August 2008. Archived from 2182:. BuildSys '15. pp. 95–98. 1949:Overland, Indra (1 March 2019). 1839:Overland, Indra (1 April 2016). 1527:Advanced metering infrastructure 1478:This section is an excerpt from 1298: 517: 505: 493: 4638:Flexible AC transmission system 3685: 3664: 3640: 3624: 3608: 3585: 3576: 3554: 3529: 3504: 3446: 3426: 3399: 3364: 3329: 3298: 3274: 3245: 3210: 3167: 3146: 3113: 3096: 3069: 3043:IEEE Transactions on Smart Grid 2995: 2982: 2968: 2953:Philip P. Walsh, Paul Fletcher 2947: 2905: 2884: 2858:from the original on 8 May 2018 2838: 2797: 2772: 2590: 2564: 2421: 2386: 2368: 2315: 2275: 2247: 2221: 2212: 2171: 2128: 1777:State Grid Corporation of China 1595:Sufficient utility grade fiber 1515:, even without the addition of 1401: 1370:the power grid into operation. 1069:variable-frequency transformers 949:pumped storage hydroelectricity 673: 500:The synchronous grids of Europe 4551:Smartgrids Technology Platform 3633:China Report: Economic affairs 3518:. Royal Society of Edinburgh. 3090:10.1109/SURV.2011.101911.00087 2894:. John Wiley & Sons, 2007 2102: 2076: 2051: 1942: 1916: 1832: 1773:railway electrification system 1327: 966:to shift load to other times. 758:Step-up substation: these use 739: 13: 1: 4704:Renewable Energy Certificates 4433:Renewable Energy Certificates 4393:Cost of electricity by source 4315:Arc-fault circuit interrupter 4191:High-voltage shore connection 3122:Smart Energy Grid Engineering 2781:Electric Distribution Systems 2496:10.1080/14693062.2016.1160864 1825: 1727:began in the 1900s, with 700 1706:Electricity (Supply) Act 1926 1702:Electricity (Supply) Act 1919 1472: 1100: 607: 602: 529: 206:Electric power infrastructure 4612:Nonintrusive load monitoring 4448:Spark/Dark/Quark/Bark spread 4246:Transmission system operator 4206:Mains electricity by country 3783:Automatic generation control 2957:, John Wiley and Sons, 2004 2415:10.1016/j.renene.2012.07.027 2283:"EEX Market Monitor Q3/2008" 1556:from a utility perspective) 1379:black start diesel generator 1264:operation, and human error. 1045:Automatic Generation Control 1023: 640:. Usually this is done with 583:. Super grids typically use 524:Major WASGs around the world 488:to become six minutes slow. 321: 7: 4825:Electric power distribution 4631:Other technologies/concepts 4473:List of electricity sectors 4468:Electric energy consumption 4186:High-voltage direct current 4161:Electric power transmission 4151:Electric power distribution 3828:Energy return on investment 3358:10.1016/j.enpol.2015.03.005 3323:10.1016/j.enpol.2016.05.013 3239:10.1016/j.enpol.2012.01.039 3186:10.1109/ICSGCE.2015.7454295 3124:. Academic Press: 481–514. 3037:Hu, J.; Lanzon, A. (2019). 2936:John Wiley & Sons 2001 2346:. p. 3. Archived from 2083:Spaes, Joel (3 July 2020). 1898:Odarno, Lily (2019-08-14). 1802: 1202: 1145: 1065:High-voltage direct current 962:to fill in supply gaps and 916:on a large scale within an 824:Electric power distribution 818:Electric power distribution 734:high-voltage direct current 680:Electric power transmission 585:High-voltage direct current 91:wide area synchronous grids 82:electric power distribution 78:electric power transmission 10: 4846: 4689:Carbon capture and storage 4388:Carbon offsets and credits 4106:Three-phase electric power 3595:(in French). 25 June 1986. 3479:Warwick, W.M. (May 2002). 3385:10.1109/mspec.2014.6821622 2729:"How Do Substations Work?" 2532:10.1109/JSYST.2015.2427994 1976:10.1016/j.erss.2018.10.018 1866:10.1016/j.erss.2016.01.009 1693:Neptune Bank Power Station 1629: 1589:Energy efficient resources 1477: 1344:Northeast blackout of 2003 1331: 1302: 1206: 1149: 1076:Capacity and firm capacity 1027: 1007: 910:large-scale energy storage 882: 878: 821: 743: 690:Three-phase electric power 677: 611: 592:Electrical interconnectors 533: 431:wide area synchronous grid 400:wide area synchronous grid 394:Wide area synchronous grid 391: 388:Wide area synchronous grid 325: 36: 29: 4773: 4727: 4709:Renewable Energy Payments 4681: 4630: 4582: 4540: 4481: 4456: 4443:Renewable Energy Payments 4366: 4303: 4265: 4119: 4056: 3967: 3932:Fossil fuel power station 3922: 3915: 3904: 3775: 3562:"Lighting by electricity" 2147:10.1109/IPSN.2014.6846736 1904:World Resources Institute 1754:Energy Policy Act of 2005 1749:Energy Policy Act of 1992 1710:Central Electricity Board 1455: 974: 850:distribution transformers 172:Electric power conversion 158:Electric power conversion 4668:Power-line communication 4226:Single-wire earth return 4166:Electrical busbar system 3823:Energy demand management 3537:"Survey of Belford 1995" 3055:10.1109/TSG.2018.2868112 2294:European Energy Exchange 1668:was settled in favor of 1624:Rocky Mountain Institute 459:power transmission lines 451:European Energy Exchange 437:(ENTSO-E) with 667  4714:Renewable energy policy 4663:Phasor measurement unit 4569:Pickens Plan super grid 4357:Residual-current device 4347:Power system protection 4337:Generator interlock kit 3728:Open Infrastructure Map 2955:Gas turbine performance 2680:. University of Calgary 2674:"Electrical substation" 2188:10.1145/2821650.2821676 1683:In the United Kingdom, 412:Eastern Interconnection 408:Western Interconnection 134:Types (grouped by size) 4643:HVDC bulk transmission 4141:Distributed generation 3813:Electric power quality 3259:. 2011. Archived from 2754:"How Power Grids Work" 2344:RWTH Aachen University 1676:the regulation of the 1660:companies established 1505:demand-side management 1491: 1387:boiler feedwater pumps 1377:, normally called the 1347: 1244:or other parts of the 1172: 1152:Brownout (electricity) 902: 894: 833: 811:Synchronous condensers 706: 697: 692:Transmission Lines at 625: 614:Electricity generation 549: 416:Quebec Interconnection 177:HVDC converter station 128:electric grid security 70:electrical substations 49: 4781:Electricity economics 4760:Rural electrification 4413:Fossil fuel phase-out 4181:Electricity retailing 4176:Electrical substation 4156:Electric power system 3443:- MidWest Energy News 2733:Practical Engineering 2702:Hayes, Brian (2005). 2012:"How Microgrids Work" 1734:Électricité de France 1560:Load control switches 1489: 1443:Old cultural value – 1341: 1310:Electrical generation 1159: 926:renewable electricity 918:electrical power grid 900: 892: 831: 746:Electrical substation 724:Most transmission is 715:electrical substation 703: 687: 621: 543: 420:Texas Interconnection 215:Electric power system 47: 32:Grid (disambiguation) 4584:Efficient energy use 3769:Electricity delivery 3439:15 June 2016 at the 3180:. pp. 195–200. 2890:Steven Warren Blume 2577:www.ny-engineers.com 2512:IEEE Systems Journal 1758:greenhouse emissions 1642:plants that enjoyed 960:peaking power plants 62:electricity delivery 30:For other uses, see 4378:Availability factor 4330:Sulfur hexafluoride 4211:Overhead power line 4111:Virtual power plant 4086:Induction generator 4039:Sustainable biofuel 3848:Home energy storage 3838:Grid energy storage 3803:Droop speed control 3660:on 18 October 2018. 3350:2015EnPol..82..207K 3231:2012EnPol..44..199T 3015:on 19 February 2009 2524:2017ISysJ..11.1810C 2487:2016CliPo..16..658M 2407:2013REne...50..628C 2233:Microgrid Knowledge 1967:2019ERSS...49...36O 1923:Douris, Constance. 1857:2016ERSS...14..122O 1769:electrified railway 1697:Newcastle upon Tyne 1689:Merz & McLellan 1666:war of the currents 1538:distribution boards 1342:Toronto during the 1293:lead–acid batteries 1117:Failures and issues 1109:according to their 1050:droop speed control 906:Grid energy storage 885:Grid energy storage 854:utilization voltage 796:Lightning arresters 113:electricity markets 109:alternating current 58:electricity network 4574:Unified Smart Grid 4252:Transmission tower 3863:Nameplate capacity 3678:The Indian Express 3566:The National Trust 2823:10.3390/en14248433 2727:Hillhouse, Grady. 2678:energyeducation.ca 2435:on 1 February 2020 2263:. 24 November 2017 2089:www.pv-magazine.fr 1820:Sustainable energy 1783:2021-12-21 at the 1678:electricity market 1644:economies of scale 1492: 1418:costs and further 1395:combustion turbine 1348: 1281:standby generators 1173: 1082:nameplate capacity 922:intermittent power 903: 895: 834: 707: 698: 626: 550: 447:electricity market 381:Sonoma, California 187:DC-to-DC converter 182:AC-to-AC converter 50: 4807: 4806: 4592:Demand management 4499: 4498: 4403:Environmental tax 4283:Cascading failure 4052: 4051: 3888:Utility frequency 3432:Andy Balaskovitz 3414:on 12 August 2016 3195:978-1-4673-8732-3 2942:978-0-471-49016-6 2260:cleantechnica.com 2235:. 18 January 2018 2156:978-1-4799-3146-0 2141:. pp. 1–11. 1375:diesel generators 1322:rolling blackouts 1285:telecommunication 1254:cascading failure 1189:voltage reduction 1128:cascading failure 1030:Utility frequency 711:electrical energy 642:electromechanical 566:energy transition 319: 318: 258:Grid-tie inverter 167:Voltage converter 151:Power engineering 16:(Redirected from 4837: 4799:Renewable energy 4719:Soft energy path 4532:Modernizing the 4526: 4519: 4512: 4503: 4502: 4489: 4488: 4398:Energy subsidies 4352:Protective relay 4293:Rolling blackout 3920: 3919: 3910: 3878:Power-flow study 3818:Electrical fault 3762: 3755: 3748: 3739: 3738: 3715: 3714: 3712: 3710: 3689: 3683: 3682: 3668: 3662: 3661: 3644: 3638: 3637: 3628: 3622: 3621: 3612: 3606: 3603: 3597: 3596: 3589: 3583: 3580: 3574: 3573: 3572:on 29 June 2011. 3568:. 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4383:Capacity factor 4371: 4369: 4362: 4342:Numerical relay 4320:Circuit breaker 4308: 4306: 4299: 4261: 4201:Load management 4171:Electrical grid 4136:Demand response 4129: 4124: 4115: 4096:Microgeneration 4048: 3963: 3911: 3902: 3898:Vehicle-to-grid 3771: 3766: 3724: 3719: 3718: 3708: 3706: 3705:on 3 March 2021 3691: 3690: 3686: 3669: 3665: 3646: 3645: 3641: 3630: 3629: 3625: 3614: 3613: 3609: 3604: 3600: 3591: 3590: 3586: 3581: 3577: 3560: 3559: 3555: 3546: 3544: 3535: 3534: 3530: 3522: 3515: 3509: 3505: 3496: 3494: 3483: 3477: 3473: 3468: 3461: 3456:. 16 June 2015. 3452: 3451: 3447: 3441:Wayback Machine 3431: 3427: 3417: 3415: 3406: 3404: 3400: 3369: 3365: 3334: 3330: 3303: 3299: 3290: 3288: 3280: 3279: 3275: 3266: 3264: 3251: 3250: 3246: 3215: 3211: 3196: 3172: 3168: 3156: 3152: 3151: 3147: 3140: 3118: 3114: 3106: 3102: 3101: 3097: 3074: 3070: 3035: 3031: 3018: 3016: 3001: 3000: 2996: 2987: 2983: 2974: 2973: 2969: 2952: 2948: 2931: 2927: 2910: 2906: 2889: 2885: 2869: 2868: 2861: 2859: 2855: 2848: 2846:"Archived copy" 2844: 2843: 2839: 2802: 2798: 2791: 2777: 2773: 2763: 2761: 2752: 2751: 2747: 2737: 2735: 2725: 2721: 2714: 2700: 2693: 2683: 2681: 2672: 2671: 2667: 2657: 2655: 2646: 2645: 2641: 2625: 2624: 2617: 2615: 2611: 2600: 2598:"Archived copy" 2596: 2595: 2591: 2581: 2579: 2569: 2565: 2508: 2504: 2467: 2460: 2455: 2448: 2438: 2436: 2427: 2426: 2422: 2391: 2387: 2382:. 7 March 2018. 2374: 2373: 2369: 2356: 2354: 2353:on 19 July 2011 2350: 2335: 2326: 2320: 2316: 2306: 2304: 2303:on 10 July 2011 2300: 2285: 2281: 2280: 2276: 2266: 2264: 2253: 2252: 2248: 2238: 2236: 2227: 2226: 2222: 2217: 2213: 2198: 2176: 2172: 2157: 2133: 2129: 2119: 2117: 2107: 2103: 2093: 2091: 2081: 2077: 2068: 2066: 2057: 2056: 2052: 2042: 2040: 2034: 2030: 2020: 2018: 2010: 2009: 2002: 1947: 1943: 1933: 1931: 1921: 1917: 1908: 1906: 1896: 1892: 1837: 1833: 1828: 1805: 1785:Wayback Machine 1725:electrification 1652:carbon monoxide 1632: 1617: 1612: 1611: 1550:demand response 1483: 1475: 1466:Demand response 1463: 1461:Demand response 1458: 1404: 1336: 1330: 1307: 1305:Demand response 1301: 1262:circuit breaker 1217:(also called a 1211: 1205: 1154: 1148: 1130:and widespread 1126:possibility of 1119: 1103: 1078: 1032: 1026: 1010: 977: 972: 970:Functionalities 964:demand response 887: 881: 858:subtransmission 845: 838: 826: 820: 788:The substation 748: 742: 682: 676: 623:Turbo generator 616: 610: 605: 538: 532: 525: 522: 513: 510: 501: 498: 396: 390: 330: 324: 315: 235:Demand response 225:Electrical grid 136: 120:electrification 54:electrical grid 42: 35: 28: 23: 22: 15: 12: 11: 5: 4843: 4833: 4832: 4827: 4822: 4805: 4804: 4802: 4801: 4796: 4791: 4788: 4783: 4778: 4774: 4771: 4770: 4768: 4767: 4762: 4757: 4752: 4747: 4742: 4737: 4731: 4729: 4728:Related issues 4725: 4724: 4722: 4721: 4716: 4711: 4706: 4701: 4696: 4694:Feed-in tariff 4691: 4685: 4683: 4679: 4678: 4676: 4675: 4670: 4665: 4660: 4655: 4650: 4648:Load following 4645: 4640: 4634: 4632: 4628: 4627: 4625: 4624: 4619: 4614: 4609: 4604: 4602:Dynamic demand 4599: 4594: 4588: 4586: 4580: 4579: 4577: 4576: 4571: 4566: 4561: 4558: 4553: 4548: 4544: 4542: 4538: 4537: 4529: 4528: 4521: 4514: 4506: 4497: 4496: 4494: 4493: 4482: 4479: 4478: 4476: 4475: 4470: 4464: 4462: 4458:Statistics and 4457: 4454: 4453: 4451: 4450: 4445: 4440: 4435: 4430: 4425: 4420: 4415: 4410: 4408:Feed-in tariff 4405: 4400: 4395: 4390: 4385: 4380: 4374: 4372: 4367: 4364: 4363: 4361: 4360: 4354: 4349: 4344: 4339: 4334: 4333: 4332: 4327: 4317: 4311: 4309: 4304: 4301: 4300: 4298: 4297: 4296: 4295: 4285: 4280: 4275: 4269: 4267: 4263: 4262: 4260: 4259: 4254: 4249: 4243: 4238: 4233: 4228: 4223: 4218: 4213: 4208: 4203: 4198: 4196:Interconnector 4193: 4188: 4183: 4178: 4173: 4168: 4163: 4158: 4153: 4148: 4146:Dynamic demand 4143: 4138: 4132: 4130: 4120: 4117: 4116: 4114: 4113: 4108: 4103: 4098: 4093: 4088: 4083: 4078: 4076:Combined cycle 4073: 4068: 4062: 4060: 4054: 4053: 4050: 4049: 4047: 4046: 4041: 4036: 4031: 4030: 4029: 4024: 4019: 4014: 4009: 3999: 3994: 3989: 3984: 3979: 3973: 3971: 3965: 3964: 3962: 3961: 3956: 3955: 3954: 3949: 3944: 3939: 3928: 3926: 3917: 3913: 3912: 3905: 3903: 3901: 3900: 3895: 3890: 3885: 3880: 3875: 3870: 3865: 3860: 3855: 3853:Load-following 3850: 3845: 3840: 3835: 3830: 3825: 3820: 3815: 3810: 3808:Electric power 3805: 3800: 3795: 3790: 3785: 3779: 3777: 3773: 3772: 3765: 3764: 3757: 3750: 3742: 3736: 3735: 3723: 3722:External links 3720: 3717: 3716: 3684: 3663: 3639: 3623: 3607: 3598: 3584: 3575: 3553: 3528: 3503: 3471: 3459: 3445: 3425: 3398: 3363: 3328: 3297: 3273: 3244: 3209: 3194: 3166: 3145: 3139:978-0128053430 3138: 3112: 3095: 3084:(4): 944–980. 3068: 3029: 2994: 2981: 2978:. 17 May 2017. 2967: 2946: 2932:Knight, U.G. 2925: 2904: 2883: 2837: 2796: 2789: 2771: 2745: 2719: 2712: 2691: 2665: 2639: 2614:on 4 June 2011 2589: 2563: 2502: 2481:(5): 658–672. 2475:Climate Policy 2458: 2446: 2420: 2385: 2367: 2314: 2274: 2246: 2220: 2211: 2196: 2170: 2155: 2127: 2115:www.lemonde.fr 2101: 2075: 2050: 2028: 2000: 1941: 1915: 1890: 1830: 1829: 1827: 1824: 1823: 1822: 1817: 1812: 1804: 1801: 1631: 1628: 1616: 1615:Grid defection 1613: 1601: 1600: 1593: 1590: 1587: 1584:energy storage 1573: 1572: 1571: 1568:PACE financing 1534: 1517:energy storage 1484: 1476: 1474: 1471: 1462: 1459: 1457: 1454: 1453: 1452: 1441: 1438:power delivery 1434: 1427: 1403: 1400: 1332:Main article: 1329: 1326: 1303:Main article: 1300: 1297: 1227:power blackout 1207:Main article: 1204: 1201: 1150:Main article: 1147: 1144: 1118: 1115: 1102: 1099: 1077: 1074: 1028:Main article: 1025: 1022: 1009: 1006: 999:peaking plants 976: 973: 971: 968: 914:energy storage 883:Main article: 880: 877: 822:Main article: 819: 816: 815: 814: 808: 798: 793: 786: 780: 770: 769: 766: 763: 744:Main article: 741: 738: 678:Main article: 675: 672: 653:kinetic energy 638:power stations 634:primary energy 630:electric power 612:Main article: 609: 606: 604: 601: 581:global warming 534:Main article: 531: 528: 527: 526: 523: 516: 514: 511: 504: 502: 499: 492: 392:Main article: 389: 386: 385: 384: 377: 371: 365: 359: 326:Main article: 323: 320: 317: 316: 314: 313: 306: 299: 291: 288: 287: 286: 285: 280: 275: 270: 265: 263:Energy storage 260: 255: 253:Ring main unit 247: 246: 240: 239: 238: 237: 232: 230:Interconnector 227: 222: 217: 209: 208: 202: 201: 200: 199: 194: 189: 184: 179: 174: 169: 161: 160: 154: 153: 147: 146: 135: 132: 66:power stations 26: 9: 6: 4: 3: 2: 4842: 4831: 4828: 4826: 4823: 4821: 4818: 4817: 4815: 4800: 4797: 4795: 4792: 4789: 4787: 4786:Energy policy 4784: 4782: 4779: 4776: 4775: 4772: 4766: 4763: 4761: 4758: 4756: 4753: 4751: 4748: 4746: 4743: 4741: 4740:Energy crisis 4738: 4736: 4733: 4732: 4730: 4726: 4720: 4717: 4715: 4712: 4710: 4707: 4705: 4702: 4700: 4697: 4695: 4692: 4690: 4687: 4686: 4684: 4680: 4674: 4671: 4669: 4666: 4664: 4661: 4659: 4656: 4654: 4651: 4649: 4646: 4644: 4641: 4639: 4636: 4635: 4633: 4629: 4623: 4620: 4618: 4615: 4613: 4610: 4608: 4605: 4603: 4600: 4598: 4595: 4593: 4590: 4589: 4587: 4585: 4581: 4575: 4572: 4570: 4567: 4565: 4562: 4559: 4557: 4554: 4552: 4549: 4546: 4545: 4543: 4539: 4535: 4527: 4522: 4520: 4515: 4513: 4508: 4507: 4504: 4492: 4484: 4483: 4480: 4474: 4471: 4469: 4466: 4465: 4463: 4455: 4449: 4446: 4444: 4441: 4439: 4436: 4434: 4431: 4429: 4428:Pigouvian tax 4426: 4424: 4421: 4419: 4416: 4414: 4411: 4409: 4406: 4404: 4401: 4399: 4396: 4394: 4391: 4389: 4386: 4384: 4381: 4379: 4376: 4375: 4373: 4365: 4358: 4355: 4353: 4350: 4348: 4345: 4343: 4340: 4338: 4335: 4331: 4328: 4326: 4325:Earth-leakage 4323: 4322: 4321: 4318: 4316: 4313: 4312: 4310: 4302: 4294: 4291: 4290: 4289: 4286: 4284: 4281: 4279: 4276: 4274: 4271: 4270: 4268: 4266:Failure modes 4264: 4258: 4255: 4253: 4250: 4247: 4244: 4242: 4239: 4237: 4234: 4232: 4229: 4227: 4224: 4222: 4219: 4217: 4216:Power station 4214: 4212: 4209: 4207: 4204: 4202: 4199: 4197: 4194: 4192: 4189: 4187: 4184: 4182: 4179: 4177: 4174: 4172: 4169: 4167: 4164: 4162: 4159: 4157: 4154: 4152: 4149: 4147: 4144: 4142: 4139: 4137: 4134: 4133: 4131: 4128: 4123: 4118: 4112: 4109: 4107: 4104: 4102: 4101:Rankine cycle 4099: 4097: 4094: 4092: 4089: 4087: 4084: 4082: 4081:Cooling tower 4079: 4077: 4074: 4072: 4069: 4067: 4064: 4063: 4061: 4059: 4055: 4045: 4042: 4040: 4037: 4035: 4032: 4028: 4025: 4023: 4020: 4018: 4015: 4013: 4010: 4008: 4005: 4004: 4003: 4000: 3998: 3995: 3993: 3990: 3988: 3985: 3983: 3980: 3978: 3975: 3974: 3972: 3970: 3966: 3960: 3957: 3953: 3950: 3948: 3945: 3943: 3940: 3938: 3935: 3934: 3933: 3930: 3929: 3927: 3925: 3924:Non-renewable 3921: 3918: 3914: 3909: 3899: 3896: 3894: 3891: 3889: 3886: 3884: 3881: 3879: 3876: 3874: 3871: 3869: 3866: 3864: 3861: 3859: 3856: 3854: 3851: 3849: 3846: 3844: 3843:Grid strength 3841: 3839: 3836: 3834: 3831: 3829: 3826: 3824: 3821: 3819: 3816: 3814: 3811: 3809: 3806: 3804: 3801: 3799: 3798:Demand factor 3796: 3794: 3791: 3789: 3786: 3784: 3781: 3780: 3778: 3774: 3770: 3763: 3758: 3756: 3751: 3749: 3744: 3743: 3740: 3733: 3732:OpenStreetMap 3729: 3726: 3725: 3704: 3700: 3699: 3694: 3688: 3680: 3679: 3674: 3667: 3659: 3655: 3654: 3653:Xinhuanet.com 3649: 3643: 3635: 3634: 3627: 3619: 3618: 3611: 3602: 3594: 3588: 3579: 3571: 3567: 3563: 3557: 3543:on 2016-04-12 3542: 3538: 3532: 3521: 3514: 3507: 3492: 3489: 3482: 3475: 3466: 3464: 3455: 3449: 3442: 3438: 3435: 3429: 3413: 3409: 3402: 3394: 3390: 3386: 3382: 3378: 3374: 3373:IEEE Spectrum 3367: 3359: 3355: 3351: 3347: 3343: 3339: 3338:Energy Policy 3332: 3324: 3320: 3316: 3312: 3311:Energy Policy 3308: 3301: 3287: 3283: 3277: 3263:on 2011-10-03 3262: 3258: 3254: 3248: 3240: 3236: 3232: 3228: 3224: 3220: 3219:Energy Policy 3213: 3205: 3201: 3197: 3191: 3187: 3183: 3179: 3178: 3170: 3162: 3155: 3149: 3141: 3135: 3131: 3127: 3123: 3116: 3105: 3099: 3091: 3087: 3083: 3079: 3072: 3064: 3060: 3056: 3052: 3048: 3044: 3040: 3033: 3026: 3014: 3010: 3009: 3004: 2998: 2991: 2985: 2977: 2971: 2964: 2963:0-632-06434-X 2960: 2956: 2950: 2943: 2939: 2935: 2929: 2922: 2921:0-920650-00-7 2918: 2914: 2908: 2901: 2897: 2893: 2887: 2879: 2873: 2854: 2847: 2841: 2833: 2829: 2824: 2819: 2815: 2811: 2807: 2800: 2792: 2790:9780470276822 2786: 2782: 2775: 2759: 2758:HowStuffWorks 2755: 2749: 2734: 2730: 2723: 2715: 2713:0-393-05997-9 2709: 2705: 2698: 2696: 2679: 2675: 2669: 2653: 2649: 2643: 2635: 2629: 2610: 2606: 2599: 2593: 2578: 2574: 2567: 2559: 2555: 2551: 2547: 2542: 2537: 2533: 2529: 2525: 2521: 2517: 2513: 2506: 2497: 2492: 2488: 2484: 2480: 2476: 2472: 2465: 2463: 2453: 2451: 2434: 2430: 2424: 2416: 2412: 2408: 2404: 2400: 2396: 2389: 2381: 2377: 2371: 2365: 2349: 2345: 2341: 2334: 2333: 2325: 2318: 2299: 2295: 2291: 2284: 2278: 2262: 2261: 2256: 2250: 2234: 2230: 2224: 2215: 2207: 2203: 2199: 2197:9781450339810 2193: 2189: 2185: 2181: 2174: 2166: 2162: 2158: 2152: 2148: 2144: 2140: 2139: 2131: 2116: 2112: 2105: 2090: 2086: 2079: 2065:on 2021-05-04 2064: 2060: 2054: 2039: 2032: 2017: 2013: 2007: 2005: 1996: 1992: 1987: 1986:11250/2579292 1982: 1977: 1972: 1968: 1964: 1960: 1956: 1952: 1945: 1930: 1926: 1919: 1905: 1901: 1894: 1887: 1882: 1877: 1876:11250/2442076 1872: 1867: 1862: 1858: 1854: 1850: 1846: 1842: 1835: 1831: 1821: 1818: 1816: 1813: 1810: 1807: 1806: 1800: 1798: 1794: 1793:Haoji Railway 1790: 1786: 1782: 1778: 1774: 1770: 1766: 1761: 1759: 1755: 1750: 1746: 1742: 1737: 1735: 1730: 1726: 1721: 1719: 1718:National Grid 1715: 1711: 1707: 1703: 1698: 1694: 1690: 1686: 1681: 1679: 1675: 1671: 1667: 1663: 1659: 1655: 1653: 1649: 1645: 1641: 1637: 1627: 1625: 1620: 1609: 1605: 1598: 1594: 1591: 1588: 1585: 1581: 1577: 1574: 1569: 1565: 1561: 1558: 1557: 1555: 1551: 1547: 1543: 1539: 1535: 1532: 1528: 1525: 1524: 1523: 1520: 1518: 1514: 1510: 1506: 1500: 1497: 1488: 1481: 1470: 1467: 1450: 1446: 1442: 1439: 1435: 1432: 1431:rights-of-way 1428: 1425: 1421: 1417: 1413: 1412:failure rates 1409: 1408: 1407: 1399: 1396: 1392: 1388: 1384: 1380: 1376: 1371: 1369: 1363: 1361: 1357: 1356:electric grid 1353: 1345: 1340: 1335: 1325: 1323: 1319: 1315: 1311: 1306: 1299:Load shedding 1296: 1294: 1290: 1286: 1282: 1278: 1274: 1270: 1265: 1263: 1259: 1255: 1251: 1250:short circuit 1247: 1243: 1238: 1236: 1232: 1231:power failure 1228: 1224: 1220: 1216: 1210: 1200: 1198: 1195:, known as a 1194: 1190: 1186: 1182: 1178: 1171: 1167: 1163: 1158: 1153: 1143: 1141: 1137: 1133: 1129: 1123: 1114: 1112: 1111:marginal cost 1108: 1098: 1096: 1095:Firm capacity 1092: 1090: 1085: 1083: 1073: 1070: 1066: 1061: 1057: 1053: 1051: 1046: 1040: 1038: 1031: 1021: 1019: 1015: 1005: 1002: 1000: 995: 991: 987: 985: 980: 967: 965: 961: 956: 952: 950: 946: 941: 939: 935: 931: 927: 923: 919: 915: 911: 908:(also called 907: 899: 891: 886: 876: 873: 869: 864: 861: 859: 855: 851: 842: 830: 825: 812: 809: 806: 802: 799: 797: 794: 791: 787: 784: 781: 778: 775: 774: 773: 767: 764: 761: 757: 756: 755: 752: 747: 737: 735: 729: 727: 722: 718: 716: 712: 702: 695: 691: 686: 681: 671: 669: 664: 662: 658: 657:photovoltaics 654: 650: 646: 643: 639: 636:typically at 635: 631: 624: 620: 615: 600: 596: 593: 588: 586: 582: 579: 575: 571: 567: 563: 559: 555: 547: 542: 537: 520: 515: 508: 503: 496: 491: 490: 489: 487: 483: 479: 475: 470: 466: 464: 460: 454: 452: 448: 444: 440: 436: 432: 427: 425: 422:). In Europe 421: 417: 413: 409: 405: 401: 395: 382: 378: 375: 372: 369: 366: 363: 360: 357: 353: 350: 349: 348: 345: 342: 338: 336: 329: 312: 307: 305: 300: 298: 293: 292: 290: 289: 284: 281: 279: 276: 274: 271: 269: 266: 264: 261: 259: 256: 254: 251: 250: 249: 248: 245: 242: 241: 236: 233: 231: 228: 226: 223: 221: 220:Power station 218: 216: 213: 212: 211: 210: 207: 204: 203: 198: 195: 193: 190: 188: 185: 183: 180: 178: 175: 173: 170: 168: 165: 164: 163: 162: 159: 156: 155: 152: 149: 148: 144: 140: 139: 131: 129: 124: 121: 116: 114: 110: 107: 102: 100: 96: 92: 88: 83: 79: 75: 71: 67: 63: 59: 55: 46: 40: 33: 19: 18:Firm capacity 4699:Net metering 4533: 4423:Net metering 4370:and policies 4288:Power outage 4257:Utility pole 4221:Pumped hydro 4170: 4127:distribution 4122:Transmission 4071:Cogeneration 3873:Power factor 3707:. Retrieved 3703:the original 3696: 3687: 3676: 3666: 3658:the original 3651: 3642: 3632: 3626: 3616: 3610: 3601: 3587: 3578: 3570:the original 3556: 3545:. Retrieved 3541:the original 3531: 3506: 3495:. Retrieved 3474: 3448: 3428: 3416:. Retrieved 3412:the original 3401: 3379:(6): 54–59. 3376: 3372: 3366: 3341: 3337: 3331: 3314: 3310: 3300: 3289:. Retrieved 3285: 3276: 3265:. Retrieved 3261:the original 3256: 3247: 3222: 3218: 3212: 3176: 3169: 3160: 3148: 3121: 3115: 3098: 3081: 3077: 3071: 3046: 3042: 3032: 3024: 3017:. Retrieved 3013:the original 3006: 2997: 2989: 2984: 2970: 2954: 2949: 2933: 2928: 2912: 2911:Alan Wyatt, 2907: 2891: 2886: 2860:. Retrieved 2840: 2816:(24): 8433. 2813: 2809: 2799: 2780: 2774: 2762:. Retrieved 2760:. April 2000 2757: 2748: 2736:. Retrieved 2732: 2722: 2703: 2682:. Retrieved 2677: 2668: 2656:. Retrieved 2651: 2642: 2616:. Retrieved 2609:the original 2604: 2592: 2580:. Retrieved 2576: 2566: 2515: 2511: 2505: 2478: 2474: 2437:. Retrieved 2433:the original 2423: 2398: 2394: 2388: 2379: 2370: 2363: 2355:. Retrieved 2348:the original 2331: 2317: 2305:. Retrieved 2298:the original 2277: 2265:. 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Retrieved 1903: 1893: 1884: 1848: 1844: 1834: 1762: 1745:public goods 1738: 1722: 1685:Charles Merz 1682: 1656: 1640:gasification 1633: 1621: 1618: 1602: 1553: 1546:home control 1531:smart meters 1521: 1501: 1493: 1464: 1405: 1402:Obsolescence 1378: 1372: 1364: 1351: 1349: 1308: 1289:battery room 1266: 1246:distribution 1239: 1234: 1230: 1226: 1222: 1218: 1215:power outage 1214: 1212: 1209:Power outage 1193:power outage 1181:power supply 1176: 1174: 1132:power outage 1124: 1120: 1104: 1094: 1093: 1086: 1079: 1062: 1058: 1054: 1041: 1033: 1018:tap changers 1011: 1003: 988: 984:demand curve 983: 981: 978: 957: 953: 942: 909: 905: 904: 868:radially fed 867: 865: 862: 835: 805:power factor 771: 760:transformers 753: 749: 730: 723: 719: 708: 674:Transmission 665: 649:heat engines 627: 597: 589: 574:solar energy 561: 557: 553: 551: 471: 467: 455: 430: 428: 403: 397: 346: 343: 339: 331: 224: 125: 117: 103: 98: 76:up or down, 57: 53: 51: 4658:Peak demand 4622:Smart meter 4418:Load factor 4273:Black start 4241:Transformer 3942:Natural gas 3893:Variability 3868:Peak demand 3858:Merit order 3788:Backfeeding 3344:: 207–221. 3317:: 378–389. 3225:: 199–206. 3019:22 November 2605:www.aep.com 2401:: 628–636. 1851:: 122–130. 1723:In France, 1720:, in 1938. 1674:liberalized 1509:solar power 1449:engineering 1424:restoration 1416:maintenance 1352:black start 1334:Black start 1328:Black start 1314:electricity 1242:substations 1185:voltage sag 1162:Tokyo Tower 1107:merit order 994:peak demand 938:solar power 934:tidal power 740:Substations 726:three-phase 570:wind energy 368:Les Anglais 106:three phase 95:super grids 4814:Categories 4777:Categories 4673:Power-to-X 4617:Smart grid 4564:Electranet 4460:production 4305:Protective 4236:Super grid 4231:Smart grid 4058:Generation 3992:Geothermal 3883:Repowering 3547:2013-10-06 3497:2023-12-13 3291:2024-08-05 3267:2011-10-11 3257:SmartGrids 2965:, page 486 2900:0470129875 2618:11 January 2541:10197/7108 2439:26 January 2429:"UHV Grid" 2357:6 December 2307:6 December 2120:27 January 2094:27 January 2069:2021-04-19 2016:Energy.gov 1909:2023-12-13 1826:References 1775:of China, 1529:(of which 1513:wind power 1496:smart grid 1480:Smart grid 1473:Smart grid 1391:excitation 1248:system, a 1101:Production 930:wind power 846:35 kV 807:correction 801:Capacitors 705:geography. 647:driven by 645:generators 608:Generation 603:Components 554:super grid 536:Super grid 530:Super grid 99:power grid 87:microgrids 39:Power Grid 4607:Negawatts 4541:Proposals 4368:Economics 4091:Micro CHP 3969:Renewable 3952:Petroleum 3947:Oil shale 3833:Grid code 3793:Base load 3734:database. 3418:13 August 3063:117469364 2862:28 August 2832:1996-1073 2550:1932-8184 1995:2214-6296 1961:: 36–40. 1809:Grid code 1687:, of the 1597:broadband 1383:megawatts 1368:bootstrap 1318:brownouts 1269:hospitals 1223:power out 1219:power cut 1067:lines or 1024:Frequency 668:gigawatts 562:mega grid 558:supergrid 439:gigawatts 404:frequency 374:Mpeketoni 362:Île d'Yeu 335:islanding 328:Microgrid 322:Microgrid 192:Rectifier 4750:Peak oil 4682:Policies 4491:Category 4278:Brownout 4066:AC power 3776:Concepts 3520:Archived 3437:Archived 3393:36554641 3204:25664994 2872:cite web 2853:Archived 2810:Energies 2764:18 March 2738:23 April 2684:23 April 2658:23 April 2628:cite web 2582:22 April 2558:10085130 2043:19 April 2021:19 April 1881:Archived 1803:See also 1781:Archived 1729:communes 1670:AC power 1648:hydrogen 1636:coal gas 1445:planning 1275:plants, 1235:blackout 1203:Blackout 1197:blackout 1177:brownout 1146:Brownout 1037:governor 1014:reactive 990:Baseload 783:Switches 578:mitigate 546:DESERTEC 418:and the 278:Recloser 273:Bus duct 197:Inverter 143:a series 141:Part of 72:to step 4790:Portals 4307:devices 4017:Thermal 4012:Osmotic 4007:Current 3987:Biomass 3977:Biofuel 3959:Nuclear 3916:Sources 3709:24 June 3346:Bibcode 3227:Bibcode 3008:Reuters 2923:page 63 2520:Bibcode 2483:Bibcode 2403:Bibcode 2380:Reuters 2290:Leipzig 2267:28 June 2239:28 June 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Index

Firm capacity
Grid (disambiguation)
Power Grid

electricity delivery
power stations
electrical substations
voltage
electric power transmission
electric power distribution
microgrids
wide area synchronous grids
super grids
three phase
alternating current
electricity markets
electrification
electric grid security
a series
Power engineering
Electric power conversion
Voltage converter
Electric power conversion
HVDC converter station
AC-to-AC converter
DC-to-DC converter
Rectifier
Inverter
Electric power infrastructure
Electric power system

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