电力系统保护与控制Issue(6)：82-88,7.
线路非全相运行及其再故障零序方向保护的动作特征分析
Action features analysis on zero-sequence directional protection of line open phase running and sound phase grounding
陈曦 1傅锦发 2樊征臻 2徐振宇2
作者信息
- 1. 宁夏回族自治区电力设计院，宁夏 银川 750001
- 2. 华北电力大学四方研究所，北京 102206
- 折叠
摘要
Abstract
This paper uses PSCAD simulation and Matlab calculation to analyze the action features of zero-sequence directional protection when a line open phase running and sound phase grounding occur. Using dual-port/multi-port network theory, superposition theory and the relationship between sequence components and phase components of voltage and current and calculation by Matlab, some curves are drawn, which contain the relationship between measured impedance angle of zero-sequence directional protection and angel difference of both system’s equivalent potential, as well as the ground location. Studies show that, if PT of zero-sequence directional protection is installed at the line side , zero-sequence measured impedance angle is related to one side open or both sides open, angel difference of both system’s equivalent potential of both sides and the position of ground point. The action features and sensitivity of zero-sequence directional protection will vary with these factors as well.关键词
非全相/复故障/零序方向保护/动作特征/双/多口网络理论/叠加原理Key words
open phase running/complex fault/zero-sequence directional protection/action features/dual-port/multi-port network theory/superposition theory分类
信息技术与安全科学引用本文复制引用
陈曦,傅锦发,樊征臻,徐振宇..线路非全相运行及其再故障零序方向保护的动作特征分析[J].电力系统保护与控制,2013,(6):82-88,7.
