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高压电器  2015 

断路器断口均压电容测试方法分析与比较

DOI: DOI:10.13296/j.1001-1609.hva.2015.08.024, PP. 141-145

Keywords: 断路器,均压电容,接线方式,测试工况,电容增量

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Abstract:

断路器均压电容器对改善断路器断口间电压分布起着重要作用,进行断路器端口均压电容的预防性试验是掌握其运行状况的可靠方式。笔者对某变电站500kV瓷柱式断路器断口均压电容进行了不同接线方式测量时电容量的影响因素分析,以及通过对出厂试验数据、交接试验数据以及预防性试验数据及试验工况的比对,分析不同测试工况下断路器断口均压电容测试影响因素及影响程度。在对断路器断口整体电容测试采用反接线测量时,电容值增量约在110pF左右;采用正接线测量时,电容值增量约在40pF左右;为便于运行后电容值的监视,宜采用正接线测量。

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