摘要
对测量阻抗型和相量比较型两种类型的电抗距离继电器的抗稳态超越的能力进行了研究,主要包括负荷的影响和同相问题的研究。同时,构造了一个新的电抗型距离继电器判据和算法,该算法具有方向性,且不受负荷和同相问题的影响,解决了由于负荷和同相问题引起的稳态超越现象,提高了保护动作的可靠性。电磁暂态仿真结果证明该原理具有防止负荷和同相问题引起的稳态超越和保护范围不足的问题。
The principle and algorithm of reactance-type distance relay can be classified into two categories： the measuring fault reactance type and phasor comparing type. The capability of resisting the stable overreach and underreach caused by load and ＂in phase problem＂ is analyzed for the two types of reactance relay. At the same time, a new algorithm of reactance-type distance relay is proposed. The EMTP simulation tests show that the new algorithm has the property of directionality as well as does not lead to overreach and underreach caused by the former factors.
出处
《继电器》
CSCD
北大核心
2006年第8期13-16,49,共5页
Relay
关键词
输电线路
电抗型距离继电器
稳态超越
EHV transmission lines
reactance type distance relay
stable overreach
