以FXBW3-35/70型复合绝缘子为研究对象,建立了在工频电压下复合绝缘子接地电流的测量系统,测量了不同污秽度下复合绝缘子的接地电流,定性分析了污秽度对接地电流大小及谐波含量的影响和规律.结果表明:复合绝缘子污秽度与其接地电流呈指数关系变化,随着污秽度增加谐波含量也有增大的趋势,证实了接地电流可用于诊断复合绝缘子的污秽程度.
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