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Caithness - Moray Link
The CaithnessMoray Link is a HVDC submarine power cable beneath the Moray Firth in Scotland, linking Spittal in Caithness and Blackhillock in Moray. Constructed by Scottish & Southern Electricity Networks, it is capable of transmitting up to 1,200 MW of power. It was officially completed in January 2019, under budget at a cost of £970million, and was reported as the largest single investment in the northern Scottish electricity network since the 1950s. The link was constructed to improve the connectivity of the Scottish electricity transmission network, and allow increased flow of electricity from renewable energy sources in the north of Scotland, such as the Beatrice and Dorenell wind farms. It is the second HVDC link to be constructed within the National Grid (as opposed to as an interconnector), after the Western HVDC Link. Construction The route was originally intended to form part of the Shetland HVDC Connection, however the project was split into two parts, wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many List of islands of the United Kingdom, smaller islands within the British Isles. Northern Ireland shares Republic of Ireland–United Kingdom border, a land border with the Republic of Ireland; otherwise, the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. The total area of the United Kingdom is , with an estimated 2020 population of more than 67 million people. The United Kingdom has evolved from a series of annexations, unions and separations of constituent countries over several hundred years. The Treaty of Union between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beatrice Wind Farm
The Beatrice Offshore Wind Farm now known as Beatrice Offshore Windfarm Ltd (BOWL) project, is a wind farm close to the Beatrice oil field in the Moray Firth, part of the North Sea 13 km off the north east coast of Scotland. History Evaluation project Beatrice Wind Farm Demonstrator Project was a joint venture between Scottish and Southern Energy and Talisman Energy (UK) to build and operate an evaluation wind farm in the deep water close to the Beatrice Oil field that Talisman Energy is planning on decommissioning in the near future. Built in 2007, with two turbines and a total capacity of 10 MW, it was designed to examine the feasibility of building a commercial wind farm in deep water at a reasonable distance from the shore. The jacket foundation design was developed by the Norwegian company OWEC Tower AS, and fabricated in Scotland by Burntisland Fabrications. The site is 13 km from the Scottish coast and in 45 m of water. The evaluation project was proposed t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Power Cables
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 , |
HVDC Transmission Lines
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] |
Electrical Interconnectors To And From Great Britain
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of an electric charge, which can be either positive or negative, produces an electric field. The movement of electric charges is an electric current and produces a magnetic field. When a charge is placed in a location with a non-zero electric field, a force will act on it. The magnitude of this force is given by Coulomb's law. If the charge moves, the electric field would be doing work on the electric charge. Thus we can speak of electric potential at a certain point in space, which is equal to the work done by an external agent in carrying a unit of pos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Power Infrastructure In Scotland
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of an electric charge, which can be either positive or negative, produces an electric field. The movement of electric charges is an electric current and produces a magnetic field. When a charge is placed in a location with a non-zero electric field, a force will act on it. The magnitude of this force is given by Coulomb's law. If the charge moves, the electric field would be doing work on the electric charge. Thus we can speak of electric potential at a certain point in space, which is equal to the work done by an external agent in carrying a unit of positi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HVDC Converter
An HVDC converter converts electric power from high voltage alternating current (AC) to high-voltage direct current (HVDC), or vice versa. HVDC is used as an alternative to AC for transmitting electrical energy over long distances or between AC power systems of different frequencies.Arrillaga, Jos; High Voltage Direct Current Transmission, second edition, Institution of Electrical Engineers, , 1998, Chapter 1, pp 1-9. HVDC converters capable of converting up to two gigawatts (GW)Davidson, C.C., Preedy, R.M., Cao, J., Zhou, C., Fu, J., Ultra-High-Power Thyristor Valves for HVDC in Developing Countries, IET 9th International Conference on AC/DC Power Transmission, London, October 2010. and with voltage ratings of up to 900 kilovolts (kV)Skog, J.E., van Asten, H., Worzyk, T., Andersrød, T., Norned – World’s longest power cable, CIGRÉ session, Paris, 2010paper reference B1-106. have been built, and even higher ratings are technically feasible. A complete converter stati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cross-linked Polyethylene
Cross-linked polyethylene, commonly abbreviated PEX, XPE or XLPE, is a form of polyethylene with cross-links. It is used predominantly in building services pipework systems, hydronic radiant heating and cooling systems, domestic water piping, insulation for high tension (high voltage) electrical cables, and baby play mats. It is also used for natural gas and offshore oil applications, chemical transportation, and transportation of sewage and slurries. PEX is an alternative to polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC) or copper tubing for use as residential water pipes. Properties Low-temperature impact strength, abrasion resistance and environmental stress cracking resistance can be increased significantly by crosslinking, whereas hardness and rigidity are somewhat reduced. Compared to thermoplastic polyethylene, PEX does not melt (analogous to elastomers) and is thermally resistant (over longer periods of up to 120 °C, for short periods without e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shetland News
The Shetland News is a news website serving the islands of Shetland, Scotland. Previously, ''The Shetland News'' was a weekly newspaper published between 1885 and 1963. The website, published by an unrelated company (Zetnews Limited), was launched in 1995, on the idea of IT entrepreneur Graeme Storey. The founding directors included Graeme Storey and Jonathan Wills. In 1996, ''The Shetland Times'' and ''The Shetland News'' were involved in a landmark legal case over alleged copyright infringement and deep linking In the context of the World Wide Web, deep linking is the use of a hyperlink that links to a specific, generally searchable or indexed, piece of web content on a website (e.g. "http://example.com/path/page"), rather than the website's home page (e .... The case was settled before going to court, by mutual agreement, regarding how web links would be made and specifically, how links would be accredited. In March 2011, long-term Shetland News journalists Pete Bevington ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shetland HVDC Connection
Shetland HVDC Connection is a high-voltage direct current submarine power cable under construction to connect Shetland to the British mainland. Current status In April 2022, the project was described as "on track to be completed by 2024". The subsea cable installation is ongoing, and expected to continue until 2023. Route The interconnector starts at the Upper Kergord Valley converter station in Shetland. From the converter station an underground cable runs to a landing area in Weisdale Voe. From there, a subsea cable runs to landfall at Noss Head in Caithness, with onward connection to an HVDC switching station north of the village of Staxigoe in Caithness. The route of the cable crosses TAT-10, TAT-14 and Atlantic Crossing 1 telecommunication cables and the Piper–Flotta oil pipeline. Technical description The interconnector will connect to the existing 320kV Caithness - Moray Link to form a three terminal HVDC network, with converter stations at Spittal in Caithness ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western HVDC Link
The Western HVDC Link is a high-voltage direct current (HVDC) undersea electrical link in the United Kingdom, between Hunterston in Western Scotland and Flintshire Bridge ( Connah's Quay) in North Wales, routed to the west of the Isle of Man. It has a transmission capacity of 2,250 MW and became fully operational in 2019. Construction The project cost £1.2billion to build. It was originally intended to enter service in 2015, and was given a deadline of 31 March 2017 by Ofgem, the industry regulator. In 2016, engineers working on the project discovered the almost intact wreck of the World War I German submarine UB-85. Completion was delayed a year due to cable manufacturing problems. The link entered service on 7 December 2017 at a reduced capacity of 900MW pending further work at Hunterston. Full use became available on 16 October 2018, but it did not give a full service until summer 2019, and was not formally handed over to the operator until 22 November 2019. In Novembe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HVDC Kingsnorth
HVDC Kingsnorth was a high-voltage direct-current (HVDC) transmission system connecting Kingsnorth in Kent to two sites in London. It was at one time the only application of the technology of high voltage direct current transmission for the supply of transformer stations in a city, and the first HVDC link to be embedded within an AC system, rather than interconnecting two asynchronous systems. It was also the first HVDC scheme to be equipped with self-tuning harmonic filters and to be controlled with a "Phase Locked Oscillator", a principle which subsequently became standard on all HVDC systems. It was designed in the late 1960s and went into service in 1974. It ran from Kingsnorth power station as a 59 kilometers long bipolar (3-wire) underground cable. The positive pole operating at a voltage of +266 kV terminated at the converter station in Beddington near Croydon. The negative pole continued to run a further 26 kilometers at -266 kV line to a similar station at Willesden in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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