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OWC is preparing an offshore assessment for ScottishPower


Four transfomers will link UK with France


Siemens will deliver four transformers, each with a capacity of 400 kilovolts (kV) and 315 megavolt amperes (MVA), on behalf of National Grid. It has plans to replace the old transformers in the high-voltage direct-current (HVDC) cross- channel link. The new transformers are quieter, have lower transmission losses and will significantly improve the system's reliability. The HVDC link connects France and England and makes it possible to efficiently exchange energy in both directions. The order includes the supply, installation and commissioning of the transformers for the Sellindge converter station in England. Siemens will complete the work by mid-2019. "These new HVDC transformers will enable our customer to raise its system to a


new level of energy efficiency and reliability," Beatrix Natter, CEO of the Siemens Transformers Business Unit, tells UKPN. "We are proud that the customer has placed the order with us as a reliable technology partner." Siemens will install the new units to fit precisely in the system. For example, the wall openings for cooling all devices are located at different points. In addition, all transformers will be equipped with a sprinkler system for fire safety. All four transformers are being manufactured in the Nuremberg transformer factory.


This factory has many years of experience in building transformers and manufactures HVDC transformers of all sizes up to a voltage level of 1,100 kilovolts (kV), which is currently the world record in transformer manufacturing. National Grid is one of the world's largest investor-owned utilities focused on transmission and distribution activities in electricity and gas in the UK and US. It plays a vital role in connecting millions of people to the energy they use. The company earned approximately €15.1 billion last year. High-voltage direct-current transmission is characterised by significantly lower


transmission losses than alternating-current transmission. The HVDC cross-channel link technology makes it possible to efficiently exchange energy in both directions via subsea cables across the English Channel. The 73-kilometre link transmits up to 2,000 megawatts which means that it can supply up to 3 million homes with power on the English side alone. HVDC therefore represents an important portion of the British power supply. The cross-channel link transmits most of its energy from France to the UK and, only in rare cases, from the island to the mainland. Siemens has successfully placed several large HVDC links in operation in recent


years. In 2018, the company will supply transformers for the world's most powerful HVDC link, which has a transmission capacity of 12 GW. The experience gained over multiple projects secures the company's position as the market leader in HVDC technology, reports Siemens.


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Offshore Wind Consultants Limited (OWC) is currently working to provide a detailed offshore construc- tion readiness assessment for the ScottishPower Renewable East Anglia ONE offshore windfarm. OWC, part of the energy consultancy group Aqualis ASA, will conduct an offshore readiness assessment to ensure the project is ready to complete the offshore works in an efficient and safe manner. The future offshore work includes instal- lation of piles, jackets, export cable and offshore substations. The contract value for OWChas not been disclosed. The East Anglia One project is being realised by ScottishPower Renewables,


who will deploy 102 wind turbines with a total installed capacity of 714 MW - the same as powering more than 500,000 UK homes. The wind farm is located approximately 45km east of Lowestoft, East Anglia, UK.


OWC will support the East


Anglia ONE project in undertak- ing a thorough construction readiness assessment. This will ensure the project benefits from OWC’s knowledge of the off- shore wind industry and helping the East Anglia ONE project to be delivered as safely and efficiently as possible.


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