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Survey Paper on the Impact of HVDC on Offshore Windfarm

Meeni kumari, L Ramesh

The present scenario of renewable energy deals with the offshore wind-farm which promises a great amount of energy production compared to the onshore wind-farm. The efficiency goes to 70-80% on sea rather than 10-20% on land. This brings to the utilization of this energy; but using this energy needs economic viability of the nation establishing this vast source of energy. Moreover, integrating the offshore wind-farm to the onshore grid requires a good technology comprising vast use of the power electronics devices. For the connection of offshore wind farm with the onshore grid there are three interconnections- a)HVAC cables b)LCC-HVDC (line commutated based HVDC) connections c) VSCHVDC( voltage source converter based HVDC). This paper is a survey of seven papers discussing all the three interconnections; their merits and demerits so that a perfect system can be designed.