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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] |
Shimogō, Fukushima
Shimogō town hall is a town located in Fukushima Prefecture, Japan. , the town had an estimated population of 5,517 in 2216 households and a population density of 17 persons per km2. The total area of the town was . Geography Shimogō is located in the mountainous southern portion of the Aizu region of Fukushima Prefecture, bordered Tochigi Prefecture to the south. *Mountains : Onodake, Nasudake, Futamatayama *Rivers : Okawa *Lakes: Okawa Dam, Ouchi Dam Neighboring municipalities *Fukushima Prefecture ** Aizuwakamatsu ** Minamiaizu ** Shōwa ** Aizumisato ** Ten-ei ** Nishigō *Tochigi Prefecture ** Nasushiobara, Tochigi Climate Shimogō has a Humid continental climate (Köppen ''Dfb'') characterized by warm summers and cold winters with heavy snowfall. The average annual temperature in Shimogō is 10.3 °C. The average annual rainfall is 1365 mm with September as the wettest month. The temperatures are highest on average in August, at around 23.7 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rockfill Dam
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. History Ancient dams Early dam building took place in Mesopotamia and the Middle East. Dams were used ... [...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] |
Dams In Fukushima Prefecture
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. History Ancient dams Early dam building took place in Mesopotamia and the Middle East. Dams were used ... [...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] |
Kaplan Turbine
The Kaplan turbine is a propeller-type water turbine which has adjustable blades. It was developed in 1913 by Austrian professor Viktor Kaplan, who combined automatically adjusted propeller blades with automatically adjusted wicket gates to achieve efficiency over a wide range of flow and water level. The Kaplan turbine was an evolution of the Francis turbine. Its invention allowed efficient power production in low- head applications which was not possible with Francis turbines. The head ranges from and the output ranges from 5 to 200 MW. Runner diameters are between . Turbines rotate at a constant rate, which varies from facility to facility. That rate ranges from as low as 54.5 rpm ( Albeni Falls Dam) to 450 rpm. Kaplan turbines are now widely used throughout the world in high-flow, low-head power production. Development Viktor Kaplan, living in Brünn, Austria-Hungary (now Brno, Czechia), obtained his first patent for an adjustable blade propeller turbine in 1912 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tohoku Electric Power Company
is an electric utility, servicing 7.6 million individual and corporate customers in six prefectures in Tōhoku region plus Niigata Prefecture. It provides electricity at 100 V, 50 Hz, though some area use 60 Hz. Tohoku Electric Power is the fourth-largest electric utility in Japan in terms of revenue, behind TEPCO, KEPCO and Chubu Electric Power. Shareholders * Nippon Life Insurance Company 3.9% * Japan Trustee Services Bank 3.8% * The Master Trust Bank of Japan 3.6% Accidents On 11 March 2011, several nuclear reactors in Japan were badly damaged by the 2011 Tōhoku earthquake and tsunami. In the Onagawa Nuclear Power Plant a fire broke out in the turbine section of the plant. In order to make up for the loss of electricity from the damaged reactor plant, Tohoku announced it would restart a mothballed natural gas power plant. The liquefied natural gas and oil-fired No. 1 unit at the Higashi Niigata plant in Niigata prefecture has a 350-megawatt capacity and co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravity Dam
A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation to oppose the horizontal pressure of water pushing against it. Gravity dams are designed so that each section of the dam is stable and independent of any other dam section. Characteristics Gravity dams generally require stiff rock foundations of high bearing strength (slightly weathered to fresh), although in rare cases, they have been built on soil foundations. The bearing strength of the foundation limits the allowable position of the resultant force, influencing the overall stability. Also, the stiff nature of the gravity dam structure is unforgiving to differential foundation settlement, which can induce cracking of the dam structure. Gravity dams provide some advantages over embankment dams, the main advantage being that they can tolerate minor over-topping flows without damage, as the conc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Okawa Dam
is a dam in Fukushima Prefecture Fukushima Prefecture (; ja, 福島県, Fukushima-ken, ) is a prefecture of Japan located in the Tōhoku region of Honshu. Fukushima Prefecture has a population of 1,810,286 () and has a geographic area of . Fukushima Prefecture borders Miya ..., Japan. Dams in Fukushima Prefecture Dams completed in 1987 {{Japan-dam-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minamiaizu District, Fukushima
is a district located in Fukushima Prefecture, Japan. It makes up the southern third of the Aizu region in western Fukushima Prefecture. As of 2003, the district has an estimated population of 33,533 and a density Density (volumetric mass density or specific mass) is the substance's mass per unit of volume. The symbol most often used for density is ''ρ'' (the lower case Greek letter rho), although the Latin letter ''D'' can also be used. Mathematicall ... of 14.32 persons per km2. The total area is 2,341.64 km2. It is the least populated part of Aizu. Towns and villages * Minamiaizu * Shimogō * Tadami * Hinoemata Merger * On March 20, 2006 the town of Tajima, and the villages of Tateiwa, Ina and Nangō merged to form the new town of Minamiaizu. Districts in Fukushima Prefecture Giyōfū architecture {{Fukushima-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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