An Adaptive Relaying Algorithm on Utilities' Electrical Feeders for Improving the Reliable Operation of Wind Farm Interconnected with Utility Grid

계통 연계 풍력발전단지의 운전효율 향상을 위한 배전 계통의 적응형 보호 계전 알고리즘

This paper proposes the adaptive relaying algorithm of protective devices applied in the neighboring distribution feeders for reliable and efficient operations of a wind farm interconnected with distribution networks by dedicated lines. Generally, it would be highly possible that the wind turbine generators are influenced by abnormal grid conditions such as disturbances occurring in the neighboring distribution feeders as well as the dedicated power line. The delayed operation time of protective devices for satisfying the coordination might overly expose the interconnected wind turbine generators to the fault and cause damage to them. In order to reduce the damages on the interconnected wind farm about the faults happening in distribution networks, this paper describes the proper delayed operation time of protective relay.