摘要
为了更有效地发现避雷器的缺陷,提出了在避雷器的交接及运行维护中应开展避雷器持续电流和工频参考电压试验。针对常规工频试验变压器进行该两项工频试验时,电源谐波对避雷器的泄漏电流有显著影响,会干扰避雷器的电流波形和幅值,为此研制了一套串联谐振试验装置用于避雷器持续电流和工频参考电压试验,并成功发现了一起避雷器缺陷。利用串联谐振试验装置进行避雷器工频测试,能有效避免干扰,也为运行单位发现避雷器缺陷提供新的途径。
In order to find the defects of metal oxide arresters(MOA) more effectively, the continuous current test and power frequency reference voltage test shall be carried out during the handover as well as operation and maintenance of the arrester. When these power-frequency tests are performed using the conventional power frequency testing transformer, interferences arise in the waveform and amplitude of the arrester current as the harmonics of the power supply exert a significant impact on the leakage current. A series resonant is developed and used in the continuous current test and power frequency reference voltage test for the MOA, and succeeds in detecting a defect of the MOA. By utilizing this in the power-frequency tests for the MOA, interferences are avoided, and a new means of detecting arrester defects is provided for grid operators.
作者
崔涛
曾宏
刘强
雷潇
廖文龙
李晓军
葛凯
CUI Tao;ZENG Hong;LIU Qiang;LEI Xiao;LIAO Wenlong;LI Xiaojun;GE Kai(State Grid Sichuan Electric Power Research Institute,Chengdu 610000,China;Suzhou Industrial Park Haiwo Science&Tenchnonly Co.,Ltd.,Suzhou 215000,China)
出处
《电瓷避雷器》
CAS
北大核心
2022年第1期69-74,共6页
Insulators and Surge Arresters
基金
国网四川省电力公司科技项目“氧化锌避雷器工频参数现场测试方法研究”(编号:521997170020)。
关键词
氧化锌避雷器
持续电流
工频参考电压
串联谐振
阻性电流
MOA
continuous current
powerfrequency reference voltage
series resonance
resistive current
