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Kjofossen Power Station
Kjofossen Power Station is a hydroelectric power plant at Vestland built during World War II. Part of its power is used as railway traction current, i.e. single-phase electric power at 16 2/3 hertz, fed directly into the overhead wire of the railway to Bergen Bergen (), historically Bjørgvin, is a city and municipality in Vestland county on the west coast of Norway. , its population is roughly 285,900. Bergen is the second-largest city in Norway. The municipality covers and is on the peninsula o .... The only other power station in Norway to produce traction current is Hakavik Power Station. See also * Hakavik Power Station External links * https://web.archive.org/web/20131110175836/http://www.ee.kth.se/php/modules/publications/reports/2010/IR-EE-ES_2010_006.pdf * https://archive.today/20130418173955/http://de.globio.travel/details/Electric-power-supply-system-of-railways-in-Norway/4dc05210b5d2d6e78f020e65 Aurland Buildings and structures in Vestland Hydroel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectric Power Plant
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vestland
Vestland is a county in Norway established on 1 January 2020. The county is located in Western Norway and it is centred around the city of Bergen, Norway's second largest city. The administrative centre of the county is the city of Bergen, where the executive and political leadership is based, but the County Governor is based in Hermansverk. The county is one of two counties in Norway that have Nynorsk as their official written language form (the others are neutral as to which form people use). Vestland was created in 2020 when the former counties of Hordaland and Sogn og Fjordane (with the exception of Hornindal municipality, which became part of Volda municipality in Møre og Romsdal county) were merged. History Vestland county is a newly created county, but it has been inhabited for centuries. The area was made up of many petty kingdoms under the Gulating during the Middle Ages. The northern part was the known as ''Firdafylke'' (now the Fjordane region; Nordfjord-S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies of World War II, Allies and the Axis powers. World War II was a total war that directly involved more than 100 million Military personnel, personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Air warfare of World War II, Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the Atomic bombings of Hiroshima and Nagasaki, only two nuclear weapons ever used in war. World War II was by far the List of wars by death toll, deadliest conflict in hu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traction Current
A railway electrification system supplies electric power to railway trains and trams without an on-board prime mover or local fuel supply. Electric railways use either electric locomotives (hauling passengers or freight in separate cars), electric multiple units (passenger cars with their own motors) or both. Electricity is typically generated in large and relatively efficient generating stations, transmitted to the railway network and distributed to the trains. Some electric railways have their own dedicated generating stations and transmission lines, but most purchase power from an electric utility. The railway usually provides its own distribution lines, switches, and transformers. Power is supplied to moving trains with a (nearly) continuous conductor running along the track that usually takes one of two forms: an overhead line, suspended from poles or towers along the track or from structure or tunnel ceilings, or a third rail mounted at track level and contacted by a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single-phase Electric Power
In electrical engineering, single-phase electric power (abbreviated 1φ) is the distribution of alternating current electric power using a system in which all the voltages of the supply vary in unison. Single-phase distribution is used when loads are mostly lighting and heating, with few large electric motors. A single-phase supply connected to an alternating current electric motor does not produce a rotating magnetic field; single-phase motors need additional circuits for starting (capacitor start motor), and such motors are uncommon above 10 kW in rating. Because the voltage of a single phase system reaches a peak value twice in each cycle, the instantaneous power is not constant. Standard frequencies of single-phase power systems are either 50 or 60 Hz. Special single-phase traction power networks may operate at 16.67 Hz or other frequencies to power electric railways. History Single phase power transmission took many years to develop. The earliest developments w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hertz
The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose expression in terms of SI base units is s−1, meaning that one hertz is the reciprocal of one second. It is named after Heinrich Rudolf Hertz (1857–1894), the first person to provide conclusive proof of the existence of electromagnetic waves. Hertz are commonly expressed in multiples: kilohertz (kHz), megahertz (MHz), gigahertz (GHz), terahertz (THz). Some of the unit's most common uses are in the description of periodic waveforms and musical tones, particularly those used in radio- and audio-related applications. It is also used to describe the clock speeds at which computers and other electronics are driven. The units are sometimes also used as a representation of the energy of a photon, via the Planck relation ''E'' = ''hν'', where ''E'' is the photon's energy, ''ν'' is its frequency ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway
Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in Track (rail transport), tracks. In contrast to road transport, where the vehicles run on a prepared flat surface, rail vehicles (rolling stock) are directionally guided by the tracks on which they run. Tracks usually consist of steel rails, installed on Railroad tie, sleepers (ties) set in track ballast, ballast, on which the rolling stock, usually fitted with metal wheels, moves. Other variations are also possible, such as "slab track", in which the rails are fastened to a concrete foundation resting on a prepared subsurface. Rolling stock in a rail transport system generally encounters lower friction, frictional resistance than rubber-tyred road vehicles, so passenger and freight cars (carriages and wagons) can be coupled into longer trains. The rail transport operations, operation is carried out by a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bergen
Bergen (), historically Bjørgvin, is a city and municipality in Vestland county on the west coast of Norway. , its population is roughly 285,900. Bergen is the second-largest city in Norway. The municipality covers and is on the peninsula of Bergenshalvøyen. The city centre and northern neighbourhoods are on Byfjorden, 'the city fjord', and the city is surrounded by mountains; Bergen is known as the "city of seven mountains". Many of the extra-municipal suburbs are on islands. Bergen is the administrative centre of Vestland county. The city consists of eight boroughs: Arna, Bergenhus, Fana, Fyllingsdalen, Laksevåg, Ytrebygda, Årstad, and Åsane. Trading in Bergen may have started as early as the 1020s. According to tradition, the city was founded in 1070 by King Olav Kyrre and was named Bjørgvin, 'the green meadow among the mountains'. It served as Norway's capital in the 13th century, and from the end of the 13th century became a bureau city of the Hansea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hakavik Power Station
Hakavik Power Station is a 7 MW hydroelectric power plant at Øvre Eiker in Buskerud, Norway, located 25 metres above sea level. The power station was inaugurated in 1922. It generates only railway traction current, single phase 55 kV at 16 2/3 hertz. The station is the starting point of a powerline to Sande and another to Sundhaugen Switching Station, where a 55 kV-line to Asker and another one to Neslandsvatn over Nordagutu and Skollenberg departs. The only other power station in Norway to do this is Kjofossen Power Station. See also * Kjofossen Power Station Kjofossen Power Station is a hydroelectric power plant at Vestland built during World War II. Part of its power is used as railway traction current, i.e. single-phase electric power at 16 2/3 hertz, fed directly into the overhead wire of the ... References External links ''Journal Extra'' Buildings and structures in Buskerud Hydroelectric power stations in Norway Øvre Eiker ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aurland
Aurland () is a municipality in the county of Vestland, Norway. It is located on the south side of the Sognefjorden in the traditional district of Sogn. The administrative center is the village of Aurlandsvangen. Other villages include Bakka, Flåm, Undredal, and Gudvangen. The municipality is the 60th largest by area out of the 356 municipalities in Norway. Aurland is the 293rd most populous municipality in Norway with a population of 1,766. The municipality's population density is and its population has increased by 3.2% over the previous 10-year period. In 2016, the chief of police for Vestlandet formally suggested a reconfiguration of police districts and stations. He proposed that the police station in Aurland be closed. General information Aurland was established as a municipality on 1 January 1838 (see formannskapsdistrikt law). The original municipality was identical to the Aurland Church of Norway, parish ''(prestegjeld)'' with the sub-parishes () of Aurlandsva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Vestland
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much artisti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
