零序有功电流选线的新型漏电保护  

The design of new leakage protection using the active component of residual current as method of faulted line selecting

作　　者：赵建文[1] 

机构地区：[1]西安科技学院电气与控制学院,陕西西安710054

出　　处：《继电器》2003年第4期55-57,共3页Relay

摘　　要：在分析中性点经消弧线圈接地的中压电网单相接地时零序电流分布的基础上 ,提出了以 89C51为核心 ,以直接检测零序有功电流峰值为选线依据的新型漏电保护方案。提高了漏电保护的灵敏性和选线的准确性。系统简单、高效。The paper made research and analysis on the topic of residual current distribution,when single phase earth fault happened in an arc suppression coil earth medium voltage network.It bring forward the proper and new application schema of leakage protection,which use sing chip microcomper 98c51 as core and use the active component of residual current peak value as faulted line selecting criterion.thus to improve the sensitivity of leakage protection and the accuracy of selecting faulted line.This system is simply,effective and is put into reality easily.

关 键 词：消弧线圈 接地系统 零序有功电流选线 漏电保护 

分 类 号：TM77[电气工程—电力系统及自动化]