【摘要】 交流电流参量常用来评定绝缘的老化程度。在环氧云母绝缘线棒多因子老化过程中 ,交流电流参量随老化时间呈现一定的变化规律 ,而且第二电流激增电压与剩余击穿电压有较强的相关性 ,可以作为特征参量来评定环氧云母绝缘的老化程度。所以 ,通过交流电流试验可以有效地评定环氧云母绝缘的劣化程度。更多还原

【Abstract】 The AC current parameters are usually used to estimate the condition of insulation. During the process of multifactor aging of epoxy/mica insulation, the AC current parameters have apparent developing laws with insulation aging time. Moreover, the rapid increase voltage P i2 of second AC current shows close correlation with the residual breakdown voltage, which can be used as characteristic parameter to estimate the remaining life of epoxy/mica insulation. Therefore, the degradation of epoxy/mica insulation can be assessed efficiently by AC testing method.更多还原