Through the analysis on large area flashover discharge of catenary insulator in China and Hong Kong area in the years 2010—2011, found the fault reason,took specific treatment measures,reduced the flashover discharge number of insulator,improved the operation level and power supply reliability of catenary.%通过对黄骅港地区接触网用绝缘子在2010年—2011年间出现的大面积闪络放电分析,查找了故障的原因,采取了具体的整治措施,降低了绝缘子的闪络放电次数,提高了接触网的安全运行水平和供电可靠性。
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