相位角阈值判断法在避雷器带电测试中的应用

The Application of Threshold Value of the Phase Angle in Surge Arester Online Test

介绍一起运用相位角阈值判断法发现的110 kV金属氧化物避雷器带电测试缺陷,结合停电检查性试验结果以及设备解体情况,深入分析了缺陷产生原因并加深了对避雷器带电测试相位角阈值判断法的认识,对通过避雷器带电测试数据分析判断设备运行状况具有实际意义。

By paying attention to the threshold value of the phase angle, an insulation defect of a 110 kV Surge Arester has been detected by conducting online test. Based on the results of several kinds of tests and experiments, the cause of this insulation defect has been discovered and the preventive methods has been provided, which have a practical significance to the safe operation of surge arresters.The threshold value of the phase angle has been dramatically addressed.