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Availability-based Tariff
Availability-based tariff (ABT) is a frequency based pricing mechanism applicable in India for unscheduled electric power transactions. The ABT falls under electricity market mechanisms to charge and regulate power to achieve short term and long term network stability as well as incentives and dis-incentives to grid participants against deviations in committed supplies as the case may be. Introduction ABT Mechanism in electricity sector in India is adopted since the year 2000 and in a few other countries for pricing bulk power across various stakeholders. ABT concerns itself with the tariff structure for bulk power and is aimed at bringing about more responsibility and accountability in power generation and consumption through a scheme of incentives and disincentives. As per the notification, ABT was initially made applicable to only central generating stations having more than one SEB / state / union territory as its beneficiary. Through this scheme, the Central Electricity Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
India
India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since 2023; and, since its independence in 1947, the world's most populous democracy. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the north; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is near Sri Lanka and the Maldives; its Andaman and Nicobar Islands share a maritime border with Thailand, Myanmar, and Indonesia. Modern humans arrived on the Indian subcontinent from Africa no later than 55,000 years ago., "Y-Chromosome and Mt-DNA data support the colonization of South Asia by modern humans originating in Africa. ... Coalescence dates for most non-European populations averag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SAIDI
A Ṣa‘īdī (, Coptic language, Coptic: ⲣⲉⲙⲣⲏⲥ ''Remris'') is a person from Upper Egypt (, Coptic language, Coptic: ⲙⲁⲣⲏⲥ ''Maris''). Etymology The word literally means "from Ṣa‘īd" (i.e. Upper Egypt), and can also refer to a Music of Egypt#Saidi (Upper Egyptian), form of music originating there, or to Sa'idi Arabic, the dialect spoken by Sa‘idis. The Arabic word ''Ṣa‘īd'', as a geographical term, means "highland, upland, plateau". The suffix ''-i'' forms an adjective. The word ''Ṣa‘īdi'' is pronounced in the dialect itself as or and the plural is or , while pronounced in Egyptian Arabic (Northern Egyptian) as and the plural is . In the Sahidic (Upper Egyptian) dialect of Coptic, the name for a person from Upper Egypt is (pronounced rem/rīs) meaning "person of the South" or (pronounced rem/pma/rīs or rem/ma/rīs) "person of (the) place of the south (i.e. Upper Egypt)". Socioeconomic status Approximately 40% of Egyptians liv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Load Profile
In electrical engineering, a load profile is a graph of the variation in the electrical load versus time. A load profile will vary according to customer type (typical examples include residential, commercial and industrial), temperature and holiday seasons. Power producers use this information to plan how much electricity they will need to make available at any given time. Teletraffic engineering uses a similar load curve. Power generation In a power system, a load curve or load profile is a chart illustrating the variation in demand/electrical load over a specific time. Generation companies use this information to plan how much power they will need to generate at any given time. A load duration curve is similar to a load curve. The information is the same but is presented in a different form. These curves are useful in the selection of generator units for supplying electricity. Electricity distribution In an electricity distribution grid, the load profile of electrici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intermittent Energy Source
Variable renewable energy (VRE) or intermittent renewable energy sources (IRES) are renewable energy sources that are not dispatchable due to their fluctuating nature, such as wind power and solar power, as opposed to controllable renewable energy sources, such as dammed hydroelectricity or bioenergy, or relatively constant sources, such as geothermal power. The use of small amounts of intermittent power has little effect on grid operations. Using larger amounts of intermittent power may require upgrades or even a redesign of the grid infrastructure. Options to absorb large shares of variable energy into the grid include using storage, improved interconnection between different variable sources to smooth out supply, using dispatchable energy sources such as hydroelectricity and having overcapacity, so that sufficient energy is produced even when weather is less favourable. More connections between the energy sector and the building, transport and industrial sectors may also h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capacity Factor
The net capacity factor is the unitless ratio of actual electrical energy output over a given period of time to the theoretical maximum electrical energy output over that period. The theoretical maximum energy output of a given installation is defined as that due to its continuous operation at full nameplate capacity over the relevant period. The capacity factor can be calculated for any electricity producing installation, such as a fuel consuming power plant or one using renewable energy, such as wind, the sun or hydro-electric installations. The average capacity factor can also be defined for any class of such installations, and can be used to compare different types of electricity production. The actual energy output during that period and the capacity factor vary greatly depending on a range of factors. The capacity factor can never exceed the availability factor, or uptime during the period. Uptime can be reduced due to, for example, reliability issues and maintenance, schedul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Load Following Power Plant
A load-following power plant, regarded as producing mid-merit or mid-priced electricity, is a power plant that adjusts its power output as demand for electricity fluctuates throughout the day. Load-following plants are typically in between base load and peaking power plants in efficiency, speed of start-up and shut-down, construction cost, cost of electricity and capacity factor. Base load and peaking power plants Base load power plants are dispatchable plants that tend to operate at maximum output. They generally shut down or reduce power only to perform maintenance or repair or due to grid constraints. Power plants operated mostly in this way include coal, fuel oil, nuclear, geothermal, run-of-the-river hydroelectric, solar, biomass and combined cycle natural gas plants. Peaking power plants operate only during times of peak demand. In countries with widespread air conditioning, demand peaks around the middle of the afternoon, so a typical peaking power plant may s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Grid Reserve Service
To balance the supply and demand of electricity on short timescales, the UK National Grid has contracts in place with generators and large energy users to provide temporary extra power, or reduction in demand. These reserve services are needed if a power station fails for example, or if forecast demand differs from actual demand. National Grid has several classes of reserve services, which in descending order of response time are: Balancing Mechanism (BM) Start-Up, Short-Term Operating Reserve, Demand Management and Fast Reserve. National Grid Frequency Response This is a service that large power users such as steel works, cold stores, large water pumping stations, can offer to the UK National Grid. These contractors have frequency sensitive relays fitted to the incoming breakers, and these disconnect the load if the system frequency falls beyond a pre-set figure (49.7 Hz). These loads are shed for a contracted period of at least 30 minutes. Within this period Standing Res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Control Of The National Grid (Great Britain)
The National Grid is the high-voltage electric power transmission network supporting the UK's electricity market, connecting power stations and major substations, and ensuring that electricity generated anywhere on the grid can be used to satisfy demand elsewhere. The network serves the majority of Great Britain and some of the surrounding islands. It does not cover Northern Ireland, which is part of the Irish single electricity market. The National Grid is a wide area synchronous grid operating at 50 hertz and consisting of 400 kV and 275 kV lines, as well as 132 kV lines in Scotland. It has several undersea interconnectors: an AC connector to the Isle of Man, and HVDC connections to Northern Ireland, the Shetland Islands, the Republic of Ireland, France, Belgium, the Netherlands, Norway, and Denmark. Ownership Since the privatisation of the Central Electricity Generating Board in 1990, the grid in England and Wales is owned by National Grid Electricity Transmission. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Standby Generator
Standby generators A standby generator is a back-up electrical system that operates automatically.Robert B. Hickey ''Electrical Construction Databook'', McGraw Hill, 2002 , Chapter 14 Within seconds of a utility outage an automatic transfer switch senses the power loss, commands the generator to start and then transfers the electrical load to the generator. The standby generator begins supplying power to the circuits. After utility power returns, the automatic transfer switch transfers the electrical load back to the utility and signals the standby generator to shut off. It then returns to standby mode where it awaits the next outage. To ensure a proper response to an outage, a standby generator runs weekly self-tests. Most units run on diesel, natural gas, or liquid propane gas. Automatic standby generator systems may be required by building codes for critical safety systems such as elevators in high-rise buildings, fire protection systems, standby lighting, or medical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Demand Response
Demand response is a change in the power consumption of an electric utility customer to better match the demand for power with the supply. Until the 21st century decrease in the cost of pumped storage and batteries, electric energy could not be easily stored, so utilities have traditionally matched demand and supply by throttling the production rate of their power plants, taking generating units on or off line, or importing power from other utilities. There are limits to what can be achieved on the supply side, because some generating units can take a long time to come up to full power, some units may be very expensive to operate, and demand can at times be greater than the capacity of all the available power plants put together. Demand response, a type of energy demand management, seeks to adjust in Real-time computing, real-time the demand for power instead of adjusting the supply. Utilities may signal demand requests to their customers in a variety of ways, including simple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Electricity Grid
The IPS/UPS (), also widely known as the Russian grid is a wide area synchronous transmission grid, the Russian Unified Power System (UPS; ) and the Integrated Power System (IPS; ) portion of the network being the national networks of Azerbaijan, Belarus, Georgia, Kazakhstan, Kyrgyzstan, Mongolia, Tajikistan and Uzbekistan. It has an installed generation capacity of 300 gigawatts, and produces 1,200 terawatt-hours (TWh) per year for its 280 million customers. The system spans eight time zones. Background The development of electric power industry and power lines in the Soviet Union (USSR) was associated with the GOELRO plan. Subsequently the connection of the lines of the republics including the Russian Soviet Federative Socialist Republic was organized into the "United Energy System" (UES) of the USSR. On 25 July 1962, within the framework of the Council for Mutual Economic Assistance (Comecon), the Soviet Union, Bulgaria, Czechoslovakia, Hungary, the German Demo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
State Grid Corporation Of China
The State Grid Corporation of China (SGCC), commonly known as the State Grid, is a Chinese state-owned electric utility corporation. It is the largest utility company in the world. , State Grid is the world's third largest company overall by revenue, behind Walmart and Amazon, and is also the largest government-owned company by revenue. In 2023 it was reported as having 1.3 million employees, 1.1 billion customers and revenue equivalent to US$546 billion. It is overseen by the State-owned Assets Supervision and Administration Commission of the State Council (SASAC). After the electricity Plant-Grid Separation reform in early 2002, the assets of State Electric Power Corporation () were divided into five power generation groups that retained the power plants and five regional subsidiaries belonging to the State Grid Corporation of China in Beijing. History State Grid is one of the "core" central state-owned enterprises (SOE) overseen by SASAC. The company is a pioneer in develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
