Storebælt HVDC
Encyclopedia
The Great Belt Power Link (Storebælt HVDC) is a high voltage direct current interconnection across the Great Belt
between Funen
and Zealand connecting two power transmission systems in Denmark
.
. The purpose of the connection is to improve utilisation of the power system, share power reserves, obtain synergies in a common regulating power market and better market performance. The decision to build the Storebælt HVDC was made in December 2005 and it is based on the feasibility study carried out in 2005. The submarine power cable
across the Great Belt was laid in July 2009 by a submarine contractor JD-Contractor A/S using the cable-laying barge
C/B Henry P. Lading. The interconnection was commissioned in July 2010 and started commercial operations in August 2010. It was inaugurated on 7 September 2010. In the first months of operation, the connection has transferred power from West to East near full capacity.
Energinet.dk
estimates that the connection will save consumers in East Denmark between 150 and 200 million kroner per year, while West Denmark will retain normal prices due to the strong connections with Germany and Norway.
The Power Link has reduced the price variability in both East and West Denmark, and reduced the price in fossil fuel
East Denmark. The cable's effect on price change in West Denmark is disputed due to the strong connections with Germany
and Norway
.
A researcher from Aalborg University claims that the reduced price variability has reduced the incentive for Smart Grids, and proposes that the bottleneck income is diverted from investments in physical grid to Smart Grid.
on Funen connected to an existing 400 kV substation and the new Herslev converter station on Zealand connected to an existing 400 kV overhead line
. The converter stations are supplied by Siemens Power Transmission and Distribution
. The interconnector includes 32 kilometres (19.9 mi) long sea cable, 16 kilometres (9.9 mi) long land cable on Funen and 10 kilometres (6.2 mi) long lang cable on Zealand.
Energinet.dk
.
Great Belt
The Great Belt is a strait between the main Danish islands of Zealand and Funen . Effectively dividing Denmark in two, the Belt was served by the Great Belt ferries from the late 19th century until the islands were connected by the Great Belt Fixed Link in 1997–98.-Geography:The Great Belt is the...
between Funen
Funen
Funen , with a size of 2,984 km² , is the third-largest island of Denmark following Zealand and Vendsyssel-Thy, and the 163rd largest island of the world. Funen is located in the central part of the country and has a population of 454,358 inhabitants . The main city is Odense, connected to the...
and Zealand connecting two power transmission systems in Denmark
Denmark
Denmark is a Scandinavian country in Northern Europe. The countries of Denmark and Greenland, as well as the Faroe Islands, constitute the Kingdom of Denmark . It is the southernmost of the Nordic countries, southwest of Sweden and south of Norway, and bordered to the south by Germany. Denmark...
.
History
Denmark has two separated transmission systems, of which the eastern one is synchronous with Nordic (former NORDEL) and the western one with the synchronous grid of Continental Europe. There had been several discussions and feasibility studies about possible interconnection between these systems. The Danish system had changed due to closure of older plants and expansion of renewable energyRenewable energy
Renewable energy is energy which comes from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable . About 16% of global final energy consumption comes from renewables, with 10% coming from traditional biomass, which is mainly used for heating, and 3.4% from...
. The purpose of the connection is to improve utilisation of the power system, share power reserves, obtain synergies in a common regulating power market and better market performance. The decision to build the Storebælt HVDC was made in December 2005 and it is based on the feasibility study carried out in 2005. The submarine power cable
Submarine power cable
Submarine power cables are major transmission cables for carrying electric power below the surface of the water. These are called "submarine" because they usually carry electric power beneath salt water but it is also possible to use submarine power cables beneath fresh water...
across the Great Belt was laid in July 2009 by a submarine contractor JD-Contractor A/S using the cable-laying barge
Cable layer
A cable layer or cable ship is a deep-sea vessel designed and used to lay underwater cables for telecommunications, electricity, and such. Cable ships are distinguished by large cable sheaveshttp://atlantic-cable.com/Cableships/Monarch%284%29/ | History of the Atlantic Cable & Undersea...
C/B Henry P. Lading. The interconnection was commissioned in July 2010 and started commercial operations in August 2010. It was inaugurated on 7 September 2010. In the first months of operation, the connection has transferred power from West to East near full capacity.
Energinet.dk
Energinet.dk
Energinet.dk 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...
estimates that the connection will save consumers in East Denmark between 150 and 200 million kroner per year, while West Denmark will retain normal prices due to the strong connections with Germany and Norway.
The Power Link has reduced the price variability in both East and West Denmark, and reduced the price in fossil fuel
Fossil fuel
Fossil fuels are fuels formed by natural processes such as anaerobic decomposition of buried dead organisms. The age of the organisms and their resulting fossil fuels is typically millions of years, and sometimes exceeds 650 million years...
East Denmark. The cable's effect on price change in West Denmark is disputed due to the strong connections with Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...
and Norway
Norway
Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...
.
A researcher from Aalborg University claims that the reduced price variability has reduced the incentive for Smart Grids, and proposes that the bottleneck income is diverted from investments in physical grid to Smart Grid.
Technical description
The Storebælt HVDC is a 600 MW Line Commutated Converter (LCC) HVDC at a voltage of 400 kV. It consists of the Fraugde converter stationStatic inverter plant
A static inverter station, also known as an HVDC Converter Station, is the terminal equipment for a high-voltage direct-current transmission line, in which direct current is converted to three-phase alternating current, and, usually, the reverse...
on Funen connected to an existing 400 kV substation and the new Herslev converter station on Zealand connected to an existing 400 kV overhead line
Overhead lines
Overhead lines or overhead wires are used to transmit electrical energy to trams, trolleybuses or trains at a distance from the energy supply point...
. The converter stations are supplied by Siemens Power Transmission and Distribution
Siemens
Siemens may refer toSiemens, a German family name carried by generations of telecommunications industrialists, including:* Werner von Siemens , inventor, founder of Siemens AG...
. The interconnector includes 32 kilometres (19.9 mi) long sea cable, 16 kilometres (9.9 mi) long land cable on Funen and 10 kilometres (6.2 mi) long lang cable on Zealand.
Operator
The Storebælt HVDC is ordered and operated by the Danish transmission system operatorTransmission system operator
File:Electricity grid simple- North America.svg|thumb|380px|right|Simplified diagram of AC electricity distribution from generation stations to consumersrect 2 243 235 438 Power stationrect 276 317 412 556 Transformer...
Energinet.dk
Energinet.dk
Energinet.dk 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...
.
External links
- This year's Danish area prices (Nord Pool SpotNord Pool SpotNord Pool Spot runs the largest market for electrical energy in the world, measured in volume traded and in market share. It operates in Norway, Denmark, Sweden, Finland, and Estonia. More than 70% of the total consumption of electrical energy in the Nordic market is traded through Nord Pool...
data)