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Konti–Skan
Konti–Skan (also known as Kontiskan) is the name of high-voltage direct-current transmission line between Denmark and Sweden. Technical description Kontiskan is a bipolar HVDC scheme. Pole 1 (Kontiskan 1) was originally built in 1965, using mercury arc valves and was able to transmit up to 250 megawatts (MW) of power with an operating voltage of 250 kV. The original mercury arc scheme was taken out of operation and disconnected on 15 August 2006, being replaced by new equipment using thyristors with a power rating of 350 MW. Pole 2, the 1988-built Kontiskan 2, was built with thyristors from the outset and can transmit 300 MW with a voltage of 285 kV. Route On the Danish side, the converter station used as well by Konti–Skan 1 and 2 is close to Vester Hassing Vester Hassing is a Danish town in North Jutland, Denmark immediately north of the Limfjord, and a part of Aalborg Municipality and Region Nordjylland. The town is situated 17 km to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vester Hassing
Vester Hassing is a Danish town in North Jutland, Denmark immediately north of the Limfjord, and a part of Aalborg Municipality and Region Nordjylland. The town is situated 17 km to the east from Aalborg, where the majority of the citizens are working. Vester Hassing lies in a hilly moraine landscape between the villages, Stae and Gandrup. The church dates from c. 1200 AD. Vester Hassing had a strong growth in the 1970s, where among others a great part the towns residential areas were built. After some years with stagnation in population, the town experienced growth after year 2004, when new homes were built. Since then commerce has grown and new residential areas have been developed. Since 2001 there has been a music festival held each year called Limfjordsfest, where both local and foreign artists appear. At Vester Hassing there is a Danish static inverter station of the HVDC Konti–Skan with the static inverters of Konti-Skan 1 and Konti-Skan 2. Vester Hassing has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energinet
Energinet is the Danish national transmission system operator for electricity and natural gas. It is an independent public enterprise owned by the Danish state under the Ministry of Climate and Energy. Energinet has some 1150 employees, and its headquarters are located in Erritsø near Fredericia in Jutland. The gas division is located in Ballerup near Copenhagen. The main tasks are to ensure efficient operation and development of the national electricity and gas infrastructure as well as ensuring equal access for all users of the infrastructure. History Energinet was created by a merger of power grid operators Eltra, Elkraft System and Elkraft Transmission, and by natural gas transmission system operator Gastra. The merger took place on 24 August 2005 with retrospective effect from 1 January 2005. Eltra owned the electricity transmission network west of the Great Belt and was system operator there. It was owned by 44 network companies there. To the east of the Great B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Læsø
Læsø ("Isle of Hlér") is the largest island in the North Sea bay of Kattegat, and is located off the northeast coast of the Jutland Peninsula, the Danish mainland. Læsø is also the name of the municipality (Danish, '' kommune'') on that island. The island is a location mentioned in several instances in Old Norse sources detailing Norse mythology. Name and Norse mythology The modern Danish form of the island's name, ''læsø'', developed from Old Norse ''Hlésey'', meaning ' Hlér's island'.McKinnell (2005:110) and Faulkes (1995:59). Hlér (Old Norse 'sea'), also known as ''Ægir'' (also Old Norse 'sea'), is a jötunn and personification of the sea in Norse mythology whose nine daughters personify waves. Similarly, the Danish city of Lejre may also derive from ''Hlér''. In the ''Poetic Edda'' poem ''Hárbarðsljóð'', the god Thor comments that it was on Hlésey that he was attacked by (and so fought) "berserk women" or "brides of berserks" who had bewitched all of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HVDC Converter Station
An HVDC converter station (or simply converter station) is a specialised type of substation which forms the terminal equipment for a high-voltage direct current (HVDC) transmission line.Arrillaga, Jos; High Voltage Direct Current Transmission, second edition, Institution of Electrical Engineers, , 1998. It converts direct current to alternating current or the reverse. In addition to the converter, the station usually contains: * three-phase alternating current switch gear * transformers * capacitors or synchronous condensers for reactive power * filters for harmonic suppression, and * direct current switch gear. Components Converter The converter is usually installed in a building called the valve hall. Early HVDC systems used mercury-arc valves, but since the mid-1970s, solid state devices such as thyristors have been used. Converters using thyristors or mercury-arc valves are known as ''line commutated converters''. In thyristor-based converters, many thyristors are conne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NordBalt
NordBalt (also formerly known as SwedLit) is a submarine power cable between Klaipėda in Lithuania and Nybro in Sweden. The purpose of the cable is to facilitate the trading of power between the Baltic and Nordic electricity markets, and to increase the supply and energy security in both markets. History The project was originally suggested in 2004. Original project Swindlit was aimed at construction of the wind farm in the Baltic Sea and ensuring the electricity transmission to Sweden and Lithuania. The participants of this project were interested also in Kruonis Pumped Storage Plant as an accumulator of variable wind energy. In August 2006, the Lithuanian and Swedish transmission grid operators Lietuvos Energija and Svenska kraftnät agreed to launch a feasibility study of a possible interconnector. In February 2007, Lietuvos Energija and Svenska Kraftnät signed an agreement with Swedish consulting company SWECO International on preparation of feasibility study. The study ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SwePol
SwePol is a -long monopolar high-voltage direct current (HVDC) submarine cable between the Stärnö peninsula near Karlshamn, Sweden, and Bruskowo Wielkie, near Słupsk, Poland. The link was inaugurated in 2000 and can transmit up to 600 MW power at a voltage of 450 kV. The cable has a cross section of . It runs for as an underground cable from the Stärno HVDC Station to the shore of the Baltic Sea. The long submarine cable comes ashore in Poland near Ustka at and runs underground for the remaining to Bruskowo Wielkie HVDC Static Inverter Plant. Unlike other monopolar HVDC schemes, Swepol uses a metallic return consisting of 2 cables with sections for the submarine portion of the line, and a single cable with sections for the land portions. Both stations use air-core inductance smoothing rectifiers of 225 mH and a weight of , with filters for the 11th, 13th, 24th, and 36th harmonics. Each filter consists of a coil and a capacitor switched in row. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LitPol Link
LitPol Link is an electricity link between Poland and Lithuania which connects the Baltic transmission system to the synchronous grid of Continental Europe. It has a capacity of 500 MW and since 2021 it can operate in a synchronous regime. History In 2000, European Commission and the EBRD agreed to finance a feasibility study on the Poland–Lithuania transmission interconnection. The study was completed in September 2002. The connection is expected to increase Poland's electricity interconnection level from 2% to 4%. Parts of LitPol are on the EU "Projects of Common Interest" list in November 2015. On 29 September 2006 Polish President Lech Kaczyński and Lithuanian President Valdas Adamkus signed a joint declaration on the joint power grid project during their meeting in Warsaw. The memorandum of understanding to establish a joint interconnection operator was signed between Lietuvos Energija and Polish PSE-Operator in Vilnius on 8 December 2006. Project Company Shareholdi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estlink
Estlink is a set of HVDC submarine power cables between Estonia and Finland. Estlink 1 is the first interconnection between the Baltic and Nordic electricity markets followed by Estlink 2 in 2014. The main purpose of the Estlink connection is to secure power supply in both regions to integrate the Baltic and Nordic energy markets. Estlink 1 History First plans for a submarine power cable between the Baltic and the Nordic regions were proposed in 1990s. Negotiations between Eesti Energia, Pohjolan Voima, Helsingin Energia, Graninge (now E.ON Sverige), Latvenergo, Statkraft and TXE Nordic Energy, a subsidiary of TXU (now Energy Future Holdings Corporation) started In 1999, and on 9 October 2001 a contract was signed in Tallinn. However, only after the harsh winter of 2002–2003 which resulted in an increased demand for power, the project of the submarine cable between Estonia and Finland got a boost. The letter of intention for underwater sea cable was signed between E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baltic Cable
The Baltic Cable is a monopolar HVDC power line running beneath the Baltic Sea that interconnects the electric power grids of Germany and Sweden. Its maximum transmission power is 600 megawatts (MW). The Baltic Cable uses a transmission voltage of 450 kV – the highest operating voltage for energy transmission in Germany. The total project cost was 2 billion SEK (US$280 million), and the link was put into operation in December 1994. With a length of , it was the second longest high voltage undersea cable on earth, until Basslink came into service in 2006. Route The Baltic Cable starts in Germany at the converter station at Lübeck-Herrenwyk, which is on the site of a former coal-fired power station, It crosses the river Trave in a channel below the bottom of the river and then follows its course as sea cable laid at the eastern side of the river. After crossing the Priwall Peninsula the cable runs parallel to the coast of Mecklenburg-Vorpommern, befor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HVDC Volgograd-Donbass
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] |
Gothenburg
Gothenburg (; abbreviated Gbg; sv, Göteborg ) is the second-largest city in Sweden, fifth-largest in the Nordic countries, and capital of the Västra Götaland County. It is situated by the Kattegat, on the west coast of Sweden, and has a population of approximately 590,000 in the city proper and about 1.1 million inhabitants in the metropolitan area. Gothenburg was founded as a heavily fortified, primarily Dutch, trading colony, by royal charter in 1621 by King Gustavus Adolphus. In addition to the generous privileges (e.g. tax relaxation) given to his Dutch allies from the ongoing Thirty Years' War, the king also attracted significant numbers of his German and Scottish allies to populate his only town on the western coast. At a key strategic location at the mouth of the Göta älv, where Scandinavia's largest drainage basin enters the sea, the Port of Gothenburg is now the largest port in the Nordic countries. Gothenburg is home to many students, as the city includes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
