基于带电监测的配网避雷器联合状态诊断研究

Research on Joint Condition Diagnosis of Arrester in Distribution Network Based on Live-line Monitoring

针对常见的配网避雷器,对其性能及常见故障进行了分析,提出了基于带电监测的3种联合状态诊断方法,通过实际现场案例对配网避雷器进行了运行电压下交流泄漏电流、红外测温以及在线监测数据的综合试验分析,并结合停电试验数据进一步验证,证实了基于带电监测的配网避雷器联合诊断方法能够及时发现避雷器内部绝缘缺陷。

Based on the analysis of the performance and common faults in the distribution network arresters,three joint state diagnosis methods based on live-line monitoring were proposed.In the actual case,the comprehensive test and analysis of AC leakage current under the operating voltage,infrared temperature measurement,on-line monitoring data were carried out.Combined with the test data of power failure,the further verification was carried out.It is proved that the joint state diagnosis methods of arrester in distribution network based on live-line monitoring can find the internal insulation defects of the arrester in time.