A Directional Relay Algorithm Using Positive-Sequence Superimposed Quantity for Transmission Line Protection

정상 성분 변화량을 이용한 송전선로 보호용 방향 계전 알고리즘

  • Published : 2003.04.01

Abstract

Directional elements are fundamental to protection scheme security and selectivity, performing such critical tasks as supervising distance elements and controlling overcurrent elements. But, conventional operating principles for directional detection based on negative or zero sequence quantify do not satisfy the requirements for improved sensitivity and fast operation under any fault conditions. In this paper, new algorithm for directional elements is proposed. The proposed algorithm use the positive-sequence superimposed voltages and currents in order to be used in all fault conditions. Also, because this algorithm uses a voltage compensation method. it can be well operated under strong source conditions.

Keywords

References

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