提出了以相同运行电压下,同相电容型设备末屏电流信号作为参考信号,获得两台电容型设备介损差值和电容量比值的试验方法。通过在智能化变电站中的应用,对容性设备带电测试数据和停电预防性试验的数据进行了分析和比较,确认电容型设备带电测试能够反应设备绝缘的真实状况。 A test method was proposed to obtain the dielectric loss difference and capacitance ratio of two capacitive devices at the same operating voltage with the final screen current signal of the same phase capacitive device as the reference signal. Through the application in the intelligent substation, the data of the capacitive test data and the preventive test of power outage were analyzed and compared, and it was confirmed that the capacitive test of the equipment could reflect the real condition of the equipment insulation.