Garton效应对膜纸复合绝缘电容器介损测量值的影响及对策

Influence of Garton Effect on the Measurement Values of Dielectric Loss of Film-paper Composite Dielectric Capacitor and Some Countermeasures

介质损耗因数(tanδ)的测量是判断电气设备绝缘情况较灵敏、有效的方法。介绍了绝缘理论中的Garton效应,分析了Garton效应对膜纸复合绝缘电容器介质损耗因数tanδ的影响,提出了现场试验中判断设备发生Garton效应的方法以及相应对策。

The measurement of dielectric dissipation factor（tanδ） is a sensitive and effective approach to judge the electrical insulation conditions of power equipments.The Garton effect in the insulation theory was described,and the influence of the effect on the measurement of dielectric dissipation factor（tanδ） of film-paper composite dielectric capacitors was analyzed.Some methods to judge if Garton effect occurs in power equipments in field tests were proposed and corresponding countermeasures were discussed.