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Location Analysis of GIS Circuit Resistance Defection
Author(s): 
Pages: 46-50
Year: Issue:  5
Journal: Electric Power

Keyword:  circuit resistancegrounding switchfracture waveformelectric interfaceresistance measurement;
Abstract: 回路电阻测量是GIS交接试验和例行试验中的一个主要项目,其目的是检查电气设备安装质量和回路的完整性.在综合考虑GIS内装导体常见的连接方式、影响GIS主回路电阻的因素和GIS回路电阻测量存在问题的情况下,针对变电站500 kV GIS断路器间隔例行试验时回路电阻超标的异常情况,通过诊断性试验、断路器气室开盖检查、地刀及电流互感器(TA)气室解体检查3个步骤不断缩小缺陷查找范围,定位缺陷并查明缺陷原因.提出了解决方案,并给出相应的检修建议,提供了一种GIS回路电阻超标定性与定位分析方法.
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