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Hitachi Energy
Hitachi Energy Ltd is a global technology company headquartered in Zurich, Switzerland. The company provides sustainable energy solutions to buildings, utilities, industries, and infrastructure sectors. The company’s portfolio includes high-voltage equipment, transformers, grid integration and grid automation technologies, and services for renewable energy sectors. The company is a subsidiary of multinational conglomerate, Hitachi Ltd, and was established in 2021 as Hitachi Energy Ltd. The company was formerly known as Hitachi ABB Power Grids, following a joint venture with Hitachi Ltd, and ABB Power Grids in 2020. History In July 2020, ABB Power Grids divested 80.1 percent of its power grid business to Hitachi Ltd. The joint venture resulted in the formation of Hitachi ABB Power Grids. In October 2021, Hitachi ABB Power Grids formally started operating as Hitachi Energy. In December 2022, it was confirmed that Hitachi acquired the remaining 19.9 percent shares from ABB L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Industry
The energy industry is the totality of all of the industries involved in the production and sale of energy, including fuel extraction, manufacturing, refining and distribution. Modern society consumes large amounts of fuel, and the energy industry is a crucial part of the infrastructure and maintenance of society in almost all countries. In particular, the energy industry comprises: * the fossil fuel industries, which include petroleum industries (oil companies, petroleum refiners, fuel transport and end-user sales at gas stations) coal industries (extraction and processing) and the natural gas industries ( natural gas extraction, and coal gas manufacture, as well as distribution and sales); * the electrical power industry, including electricity generation, electric power distribution and sales; * the nuclear power industry; * the renewable energy industry, comprising alternative energy and sustainable energy companies, including those involved in hydroelectric power ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UHVDC
A high-voltage direct current (HVDC) electric power transmission system (also called a power superhighway or an electrical superhighway) uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC) transmission systems. Most HVDC links use voltages between 100 kV and 800 kV. However, a 1,100 kV link in China was completed in 2019 over a distance of with a power capacity of 12 GW. With this dimension, intercontinental connections become possible which could help to deal with the fluctuations of wind power and photovoltaics. HVDC allows power transmission between AC transmission systems that are not synchronized. Since the power flow through an HVDC link can be controlled independently of the phase angle between source and load, it can stabilize a network against disturbances due to rapid changes in power. HVDC also allows the transfer of power between grid systems running at different frequencies, such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TenneT
TenneT is a transmission system operator in the Netherlands and in a large part of Germany. ''TenneT B.V.'' is the national electricity transmission system operator of the Netherlands, headquartered in Arnhem. Controlled and owned by the Dutch government, it is responsible for overseeing the operation of the 380 and 220 kV high-voltage grid throughout the Netherlands and its interconnections with neighbouring countries. It is additionally responsible for the 150 kV grid in South Holland. In Germany, its subsidiary ''TenneT TSO GmbH'' is one of the four transmission system operators. Formerly named ''Transpower'', it was taken over and renamed in 2010. As of 2006, it operates 3,286 km of lines and cables at 150 kV and above, connecting at 51 high-voltage substations. Peak demand for 2006 was 14,846 MW. The sole shareholder is the Dutch Ministry of Finance. History TenneT was formed in 1998 when the Dutch electricity industry was liberalised, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gull Bay First Nation
Gull Bay First Nation or Kiashke Zaaging Anishinaabek (''Gayaashki-zaagiing Anishinaabeg'' in the Ojibwe writing systems#Double-vowel system, Fiero orthography) is an Anishinaabe (Ojibwe, Ojibway) First Nations in Canada, First Nation band government located in Thunder Bay District in northwestern Ontario, Canada. It is approximately north of Thunder Bay, Ontario on Ontario Highway 527, Highway 527 on the western shore of Lake Nipigon. As of May 2010, the First Nation had a registered population of 1,149 people, including an on-Reserve population of 328. Governance The Chief and 10 Band Council members elected every 4 years under the First Nations Elections Act Electoral system. Before 2012, the council had 11 members but it was narrowed down to ten council members, with the passing of a council member. The current Chief is Wilfred King, whose first term began on January 12, 2013 (at the time, it was a 2-year term). The current councillors are Anthony Esquega, Brian King, Gwendo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microgrid
A microgrid is a local electrical grid with defined electrical boundaries, acting as a single and controllable entity. It is able to operate in grid-connected and in island mode.''How Microgrids Work.'' U.S. Department of Energy, June 2014 A 'Stand-alone microgrid' or 'isolated microgrid' only operates and cannot be connected to a wider electric power system. A grid-connected microgrid normally operates connected to and synchronous with the traditional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Renewable Energy
Renewable energy is energy that is collected from renewable resources that are naturally replenished on a human timescale. It includes sources such as sunlight, wind, the movement of water, and geothermal heat. Although most renewable energy sources are sustainable, some are not. For example, some biomass sources are considered unsustainable at current rates of exploitation. Renewable energy often provides energy for electricity generation to a grid, air and water heating/cooling, and stand-alone power systems. Renewable energy technology projects are typically large-scale, but they are also suited to rural and remote areas and developing countries, where energy is often crucial in human development. Renewable energy is often deployed together with further electrification, which has several benefits: electricity can move heat or objects efficiently, and is clean at the point of consumption. In addition, electrification with renewable energy is more efficient and therefore ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Sea Link
The North Sea Link is a 1,400MW high-voltage direct current submarine power cable between Norway and the United Kingdom. At it is the longest subsea interconnector in the world. The cable became operational on 1 October 2021. Route The cable runs from Kvilldal, Suldal, in Norway, to Cambois near Blyth in England. The converter station is located near to the cable landfall in East Sleekburn and is connected to the National Grid at the Blyth substation. Technical description The cable is long, and has a capacity of 1,400MW. The estimated cost of the project was €2billion, and it became operational in 2021, as planned. Project participants It is a joint project of the transmission system operators Statnett and National Grid. The offshore cable was supplied by Prysmian and manufactured at the Arco Felice factory in Naples, Italy. It was installed by the cable-laying vessel ''Giulio Verne''. Cable for the fjord, tunnel and lake sections, and the onshore connection in No ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Power Cable
A submarine power cable is a transmission cable for carrying electric power below the surface of the water.Underwater Cable an Alternative to Electrical Towers Matthew L. Wald, '''', 2010-03-16, accessed 2010-03-18. These are called "submarine" because they usually carry electric power beneath (arms of the , |
High-voltage Direct Current
A high-voltage direct current (HVDC) electric power transmission system (also called a power superhighway or an electrical superhighway) uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC) transmission systems. Most HVDC links use voltages between 100 kV and 800 kV. However, a 1,100 kV link in China was completed in 2019 over a distance of with a power capacity of 12 GW. With this dimension, intercontinental connections become possible which could help to deal with the fluctuations of wind power and photovoltaics. HVDC allows power transmission between AC transmission systems that are not synchronized. Since the power flow through an HVDC link can be controlled independently of the phase angle between source and load, it can stabilize a network against disturbances due to rapid changes in power. HVDC also allows the transfer of power between grid systems running at different frequencies, such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulfur Hexafluoride
Sulfur hexafluoride or sulphur hexafluoride (British spelling) is an inorganic compound with the formula SF6. It is a colorless, odorless, non- flammable, and non-toxic gas. has an octahedral geometry, consisting of six fluorine atoms attached to a central sulfur atom. It is a hypervalent molecule. Typical for a nonpolar gas, is poorly soluble in water but quite soluble in nonpolar organic solvents. It has a density of 6.12 g/L at sea level conditions, considerably higher than the density of air (1.225 g/L). It is generally transported as a liquefied compressed gas. is 23,500 times more potent than as a greenhouse gas but exists in relatively minor concentrations in the atmosphere. Its concentration in Earth's troposphere reached 10.63 parts per trillion (ppt) in 2021, rising at 0.39 ppt/year. The increase over the prior 40 years was driven in large part by the expanding electric power sector, including fugitive emissions from banks of gas contained in its med ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultra-high-voltage Electricity Transmission In China
Ultra-high-voltage electricity transmission (UHV electricity transmission) has been used in China since 2009 to transmit both alternating current (AC) and direct current (DC) electricity over long distances separating China's energy resources and consumers. Expansion of both AC and DC capacity continues in order to match generation to consumption demands while minimizing transmission losses. Decarbonization improvements will result from the replacement of lower efficiency generation, located near the coast, by more modern high-efficiency generation with less pollution near the energy resources. Background Since 2004, electricity consumption in China has been growing at an unprecedented rate due to the rapid growth of industrial sectors. Serious supply shortage during 2005 had impacted the operation of many Chinese companies. Since then, China has very aggressively invested in electricity supply in order to fulfil the demand from industries and hence secure economic growth. Installe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semiconductor
A semiconductor is a material which has an electrical resistivity and conductivity, electrical conductivity value falling between that of a electrical conductor, conductor, such as copper, and an insulator (electricity), insulator, such as glass. Its electrical resistivity and conductivity, resistivity falls as its temperature rises; metals behave in the opposite way. Its conducting properties may be altered in useful ways by introducing impurities ("doping (semiconductor), doping") into the crystal structure. When two differently doped regions exist in the same crystal, a semiconductor junction is created. The behavior of charge carriers, which include electrons, ions, and electron holes, at these junctions is the basis of diodes, transistors, and most modern electronics. Some examples of semiconductors are silicon, germanium, gallium arsenide, and elements near the so-called "metalloid staircase" on the periodic table. After silicon, gallium arsenide is the second-most common s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
