10kV开关柜接地闸刀限位器失效的原因分析Cause Analysis on Failure of Earthing Switch Block in 10 k V Switch Cabinet
汤金兴,范明,张杰,沈中元,彭明法
TANG Jinxing,FAN Ming,ZHANG Jie,SHEN Zhongyuan,PENG Mingfa
摘要(Abstract)：
对某变电站内10 k V中置式开关柜的接地闸刀限位器碎裂样品进行宏观检验和成分光谱分析,综合检验结果表明,损坏的限位器制造工艺粗糙、铝的含量偏低,是导致该铝铸件在十多年的运行后变脆破裂的根本原因,并据此提出了相应的改进措施。
Macroscopic examination and composition spectral analysis on crack samples of earthing switch block in 10 k V centrally-installed switch cabinet are implemented. The comprehensive test indicates that low content of aluminum and the coarse manufacturing process are the main reason of block cracking after more than ten year′s operation. According to the analysis some improvements are proposed.
关键词(KeyWords)：
接地闸刀;地刀限位器;传动机构;失效
earthing switch;block of earthing switch;transmission mechanism;failure
基金项目(Foundation):
作者(Author):
汤金兴,范明,张杰,沈中元,彭明法
TANG Jinxing,FAN Ming,ZHANG Jie,SHEN Zhongyuan,PENG Mingfa
DOI: 10.19585/j.zjdl.2015.05.018
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