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电网技术  2007 

恒压洁净雾环境中复合绝缘子表面泄漏电流特征参量分析

, PP. 70-74

Keywords: 复合绝缘子,表面泄漏电流,污闪,累积泄漏电流脉冲数目,累积放电量,高电压技术

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Abstract:

为有效地建立污闪与泄漏电流之间的关系,针对一种憎水性充分迁移的10kV复合绝缘子试样,采用恒压洁净雾试验方法,分析了泄漏电流特征参量随受潮时间的长期变化特征,并讨论了泄漏电流各个特征参量与污闪之间的对应关系。结果表明累积泄漏电流脉冲数目及累积放电量随时间的变化特性与试品是否发生污闪有对应关系,即发生闪络的试品其表面累积泄漏电流脉冲数目及累积放电量的上升速度均快于未闪络的试品。

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