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Imaichi Pumped Storage Power Station
The is a large pumped-storage hydroelectric power station in Tochigi Prefecture, Japan. With a total installed capacity of , it is one of the largest pumped-storage power stations in Japan. The facility is run by the Tokyo Electric Power Company (TEPCO). The power plant started operation in July 1988 with a capacity of 350 MW (one unit operational). The other two units entered operation in December 1991. The plant is one of the many large scale pure pumped-storage plants built in Japan since the 1970s to compensate for the increased penetration of base-load nuclear power and peak load from cooling and air-conditioning. Like most pumped-storage facilities, the power station uses two reservoirs, releasing and pumping as the demand rises and falls. The upper reservoir is contained by the Imaichi Dam, a concrete gravity dam, at an altitude of 512 m. The reservoir is fed by the Togawa river. The lower reservoir is contained by the Kuriyama Dam, a rock-fill embankment dam at an alti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikkō
is a city located in Tochigi Prefecture, Japan. , the city had an estimated population of 80,239 in 36,531 households, and a population density of 55 persons per km2. The total area of the city is . It is a popular destination for Japanese and international tourists. Attractions include the mausoleum of ''shōgun'' Tokugawa Ieyasu (Nikkō Tōshō-gū) and that of his grandson Iemitsu (Iemitsu-byō Taiyū-in), and the Futarasan Shrine, which dates to the year 767 AD. There are also many famous hot springs (''onsen'') in the area. Elevations range from 200 to 2,000 meters. The Japanese saying 【日光を見ずして結構と言うなかれ】 "Never say 'kekkō' until you've seen Nikkō"—''kekkō'' meaning beautiful, magnificent or "I am satisfied"—is a reflection of the beauty and sites in Nikkō. Geography Nikkō covers a vast area (1,449.83 km2) of rural northwestern Tochigi approximately 140 km north of Tokyo and 35 km west of Utsunomiya, the capital of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Storage
Energy storage is the capture of energy produced at one time for use at a later time to reduce imbalances between energy demand and energy production. A device that stores energy is generally called an accumulator or battery. Energy comes in multiple forms including radiation, chemical, gravitational potential, electrical potential, electricity, elevated temperature, latent heat and kinetic. Energy storage involves converting energy from forms that are difficult to store to more conveniently or economically storable forms. Some technologies provide short-term energy storage, while others can endure for much longer. Bulk energy storage is currently dominated by hydroelectric dams, both conventional as well as pumped. Grid energy storage is a collection of methods used for energy storage on a large scale within an electrical power grid. Common examples of energy storage are the rechargeable battery, which stores chemical energy readily convertible to electricity to opera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pumped-storage Hydroelectric Power Stations In Japan
Pumped-storage hydroelectricity (PSH), or pumped hydroelectric energy storage (PHES), is a type of hydroelectric energy storage used by electric power systems for load balancing. The method stores energy in the form of gravitational potential energy of water, pumped from a lower elevation reservoir to a higher elevation. Low-cost surplus off-peak electric power is typically used to run the pumps. During periods of high electrical demand, the stored water is released through turbines to produce electric power. Although the losses of the pumping process make the plant a net consumer of energy overall, the system increases revenue by selling more electricity during periods of peak demand, when electricity prices are highest. If the upper lake collects significant rainfall or is fed by a river then the plant may be a net energy producer in the manner of a traditional hydroelectric plant. Pumped-storage hydroelectricity allows energy from intermittent sources (such as solar, wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Pumped-storage Hydroelectric Power Stations
The following page lists all pumped-storage hydroelectric power stations that are larger than in installed generating capacity, which are currently operational or under construction. Those power stations that are smaller than , and those that are decommissioned or only at a planning/proposal stage may be found in regional lists, listed at the end of the page. List of plants larger than 1000 MW capacity The table below lists currently operational power stations. Some of these may have additional units under construction, but only current installed capacity is listed. Under construction This table lists future 1,000 MW or larger stations that are under construction; some may be partially operational with a current installed capacity under 1,000 MW. See also * List of energy storage projects * List of hydroelectric power station failures * Lists of hydroelectric power stations * List of largest power stations * United States Department of Energy Global E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectricity In Japan
Hydroelectricity is the second most important renewable energy source after solar energy in Japan with an installed capacity of 50.0 gigawatt (GW) as of 2019. According to the International Hydropower Association Japan was the world's sixth largest producer of hydroelectricity in 2020. Most of Japanese hydroelectric power plants are pumped-storage plants. Conventional hydropower plants account for about 20 GW out of the total installed capacity as of 2007. Conventional hydropower potential of Japan is considered to be almost fully developed, with little opportunity for further capacity increase. In recent years, almost exclusively pumped storage plants were commissioned, significantly increasing the ratio of pumped storage capacity over conventional hydro. The large capacity of pumped storage hydropower was built to store energy from nuclear power plants, which until the Fukushima disaster constituted a large part of Japan electricity generation. As of 2015, Japan is the country wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Power Stations In Japan ...
This page is a list of power stations in Japan that are publicly or privately owned. List Former power station * Senju Thermal Power Station See also *Electricity sector in Japan *Energy in Japan *List of largest power stations in the world References {{Economy of Japan Japan Power stations Power stations A power station, also referred to as a power plant and sometimes generating station or generating plant, is an industrial facility for the generation of electric power. Power stations are generally connected to an electrical grid. Many po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shimogo Pumped Storage Power Station
The is a large pumped-storage hydroelectric power plant in Shimogō, Minamiaizu, Fukushima Prefecture, Japan. With an installed capacity of , the system is one of the largest pumped-storage power stations in Japan. The facility is run by Electric Power Development Company (J-Power). Like most pumped-storage facilities, the power station uses two reservoirs, releasing and pumping as the demand rises and falls. The Ouchi Dam Reservoir, formed by the Ouchi Dam, is the upper artificial reservoir, while Okawa Dam forms the lower reservoir. Ogawa Dam is a rockfill-concrete gravity combined dam, with a height of 75 m and a length of 406 m. Construction on the dam started in 1971 and was completed in 1987. The dam is also used for flood control, irrigation, and domestic and industrial water supply. Ouchi Dam is a rockfill dam with a height of 102 m and a length of 340 m. Construction started in 1974 and was completed in 1991. The power plant employs four 250 MW pump/generator units, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XLPE
Cross-linked polyethylene, commonly abbreviated PEX, XPE or XLPE, is a form of polyethylene with cross-links. It is used predominantly in building services pipework systems, hydronic radiant heating and cooling systems, domestic water piping, insulation for high tension (high voltage) electrical cables, and baby play mats. It is also used for natural gas and offshore oil applications, chemical transportation, and transportation of sewage and slurries. PEX is an alternative to polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC) or copper tubing for use as residential water pipes. Properties Low-temperature impact strength, abrasion resistance and environmental stress cracking resistance can be increased significantly by crosslinking, whereas hardness and rigidity are somewhat reduced. Compared to thermoplastic polyethylene, PEX does not melt (analogous to elastomers) and is thermally resistant (over longer periods of up to 120 °C, for short periods without e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volt
The volt (symbol: V) is the unit of electric potential, electric potential difference ( voltage), and electromotive force in the International System of Units (SI). It is named after the Italian physicist Alessandro Volta (1745–1827). Definition One volt is defined as the electric potential between two points of a conducting wire when an electric current of one ampere dissipates one watt of power between those points. Equivalently, it is the potential difference between two points that will impart one joule of energy per coulomb of charge that passes through it. It can be expressed in terms of SI base units ( m, kg, s, and A) as : \text = \frac = \frac = \frac. It can also be expressed as amperes times ohms (current times resistance, Ohm's law), webers per second (magnetic flux per time), watts per ampere (power per current), or joules per coulomb (energy per charge), which is also equivalent to electronvolts per elementary charge: : \text = \text\Omeg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuriyama Dam (Tochigi)
The Kuriyama Dam is a rock-fill embankment dam An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil or rock. It has a semi-pervious waterproof natural covering for its surface and ... on a tributary of the Togawa River located northwest of Nikkō in Tochigi Prefecture, Japan. It was constructed between 1981 and 1985. Its reservoir serves as the upper reservoir for the 1,050 MW Imaichi Pumped Storage Power Station, while the Imaichi Dam forms the lower. The dam is tall and withholds a reservoir with a storage capacity of . Of that capacity, is used to produce electricity at the power plant. It is owned and operated by TEPCO. References {{Dams in Tochigi Prefecture Rock-filled dams Dams in Tochigi Prefecture Dams completed in 1985 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tochigi Prefecture
is a prefecture of Japan located in the Kantō region of Honshu. Tochigi Prefecture has a population of 1,943,886 (1 June 2019) and has a geographic area of 6,408 km2 (2,474 sq mi). Tochigi Prefecture borders Fukushima Prefecture to the north, Gunma Prefecture to the west, Saitama Prefecture to the south, and Ibaraki Prefecture to the southeast. Utsunomiya is the capital and largest city of Tochigi Prefecture, with other major cities including Oyama, Tochigi, and Ashikaga. Tochigi Prefecture is one of only eight landlocked prefectures and its mountainous northern region is a popular tourist region in Japan. The Nasu area is known for its onsens, local sake, and ski resorts, the villa of the Imperial Family, and the station of the Shinkansen railway line. The city of Nikkō, with its ancient Shintō shrines and Buddhist temples, is a UNESCO World Heritage Site. Prefectural overview Situated among the inland prefectures of the northern part of the Kantō region, Tochig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imaichi Dam
The Imaichi Dam (今市ダム) is a concrete gravity dam on the Togawa River located west of Nikkō in Tochigi Prefecture, Japan. The dam serves as the lower reservoir for the Imaichi Pumped Storage Power Station, while the Kuriyama Dam is a concrete gravity dam in Hokkaido is Japan's second largest island and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by ... forms the upper. It is owned by TEPCO and was constructed between 1979 and 1986. The reservoir can store of water. Of that storage volume, can be used for power generation. Imaichi Pumped Storage Power Station The power plant operates using the pumped storage hydroelectric method. During periods of high electricity demand, water is sent from the upper Kuriyama Reservoir to the power plant which contains 3 x Francis pump turbines. Water discharged from the power plant then enters the Imai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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