摘要
针对变电站接地网故障频发、危及电力系统安全的问题,介绍电磁场分析法的基本原理及检测系统,并应用该方法对某500kV和110kV变电站进行试验,结果表明在接地网图纸未知的情况下,采用电磁场分析法可以推断接地网结构、确定地下导体位置、诊断接地网导体断点和接地网腐蚀程度。
Aiming at grounding grid fault in electric system leading unsafety of elelectric system, this paper introduces the basic principles and detection system of electromagnetic field analysis method,and has the tests for 500 kV and 110 kV with this method,the test results show that this method can judgent structure of grounding grid and search the con-ductor position in the earth, diagnosis the conductor broken points fault and the corrossion level of grounding grid with-out the work drawing.
出处
《河北电力技术》
2013年第2期7-9,共3页
Hebei Electric Power
关键词
变电站
接地网
状态诊断
电磁场分析法
substation
grounding grid
state detection
elec-tromagnetic field analysis method
