电力系统保护与控制2011，Vol.39Issue(3)：24-28,5.
零序互感对相邻线路纵联零序方向保护的影响
Effects of zero-sequence mutual inductance on zero-sequence pilot protection of parallel lines
吴麟琳 1黄少锋1
作者信息
- 1. 华北电力大学四方研究所,北京,102206
- 折叠
摘要
Abstract
Effects of mutual inductance on zero-sequence pilot protection of parallel lines are analyzed. Using a general model of mutual inductance lines and combining with the operating principle of the zero-sequence directional element, a detailed theoretical analysis is carried out on the actions of zero-sequence pilot protection under the conditions of inner fault and fault at the exit in the opposite direction. Studies show that in the case of internal fault or fault at the exit in the opposite direction, the zero-sequence directional protection of the fault line is immune to the impact of zero-sequence mutual inductance, and can operate correctly; the maloperation of the zero-sequence pilot protection of its parallel line depends on the tightness extent of electrical connection between the two mutual lines, the stronger the electrical connection is, the smaller the possibility of malfunction will be. At last, PSCAD simulation is carried out.关键词
互感线路/纵联零序方向保护/零序互感/电气联系/同杆并架Key words
transmission lines with mutual inductance/ zero-sequence pilot protection/ zero-sequence mutual inductance/ electrical connection/ the double circuits on the same tower分类
信息技术与安全科学引用本文复制引用
吴麟琳,黄少锋..零序互感对相邻线路纵联零序方向保护的影响[J].电力系统保护与控制,2011,39(3):24-28,5.
