Improved distance relay suitable for intertie protection of a wind farm considering Fault Ride-Through requirement

풍력단지의 Fault Ride-Through 기능을 위한 연계선 보호용 거리계전기의 성능향상 기법

  • Published : 2009.07.14

Abstract

A large wind farm should satisfy the requirements for a grid and accomplish the optimization of the wind farm system. In that point of view, the wind farm intertie protection system, which must consider the Fault Ride-Through (FRT) requirement for more reliable protection, should be improved. This paper proposes a modified distance relay suitable for protection of a wind farm intertie considering a FRT requirement. The frequency change is used to discriminate the intertie fault from a outside zone fault. The performance of the proposed algorithm is verified using a PSCAD/EMTDC simulator.

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