宁夏电力Issue(5)：23-28,6.DOI:10.3969/j.issn.1672-3643.2014.05.006
高阻接地故障双重化保护动作不一致原因分析
Cause analysis of duplicate protection action inconsistency for high-resistance grounding fault
温靖华 1罗美玲 1徐丽娟1
作者信息
- 1. 国网宁夏电力公司调度控制中心，宁夏 银川 750001
- 折叠
摘要
Abstract
Aiming at the problem of duplicate protection action inconsistency on both sides of the line in the process of high-resistance grounding fault of 220 kV transmission line,according as fault time order divides three phases to analyze fault protection report information and fault waveform, simultaneously by fault simulation calculation and verification,finds out the causes of protection action inconsistency and protection action behavior defect,puts forward the setting method and optimization logic for application for protection device,when high-resistance grounding fault occurs on high voltage line,both sides of duplicate protection device can act fleetly and congruously, uttermostly protects the security of power grid and equipments. The application result shows that the proposed protection setting method calculate easy,suits for 220 kV and above line protection setting calculation,using dorsal power source value setting protection start-up value solves the problem of protection action inconsistency on both sides of transmission line.关键词
保护动作行为/高阻接地/定值计算Key words
protection action behavior/high-resistance grounding fault/settings calculation分类
信息技术与安全科学引用本文复制引用
温靖华,罗美玲,徐丽娟..高阻接地故障双重化保护动作不一致原因分析[J].宁夏电力,2014,(5):23-28,6.
