摘要
停电条件下的泄漏电流检测是判断避雷器运行状态的有效方法。为获取停电现场强干扰环境下避雷器准确的泄漏电流检测值,提出一种基于正反接线原理的避雷器真泄漏电流量测方法,简单、高效且具有现实推广意义。首先分析避雷器泄漏电流测量值不准确问题的存在性,然后通过分析介质损耗测试方法定义真泄漏电流概念,进而分析当前避雷器泄漏电流的测量机理,最后提出基于正反接线原理的避雷器真泄漏电流测量机理,同时进行了相同试验条件不同电流表检测位置下实验大厅和检修现场的试验验证,试验表明,所提方法对解决避雷器真泄漏电流获取困难问题具有切实意义,具有较高的应用价值和推广价值。
Leakage current detection under power off is an effective method to judge the operation state of lightning arrester.In order to accurately detect the leakage current value of arrester in the strong interference environment of power off site,a method based on positive and reverse wiring principle was proposed to measure the leakage current of lightning arrester,which is simple,efficient and has practical significance.Firstly,the reason of inaccurate measurement of lightning arrester leakage current was analyzed.Then,the concept of true leakage current was defined by analyzing the dielectric loss test method.Moreover,the measuring mechanism of the leakage current of lightning arrester was analyzed.Lastly,the ture leakage current measurement mechanism of lightning arrester based on positive and reverse wiring principle was proposed,and the test verification was carried out in the test hall and maintenance site under the same test conditions and different ammeter detection positions.The test results show that the proposed method has practical significance to solve the problem of obtaining the true leakage current of lightning arrester,and has high application value and promotion value.
作者
李飞
耿宁
刘林
岳增伟
韩雪姣
赵雷
LI Fei;GENG Ning;LIU Lin;YUE Zengwei;HAN Xuejiao;ZHAO Lei(State Grid Zibo Electric Power Company,Zibo 255000,China;Shantou University,Shantou 515000,China)
出处
《山东电力技术》
2021年第7期49-52,63,共5页
Shandong Electric Power
基金
国家自然科学青年基金项目(51907113)。
关键词
避雷器
真泄漏电流
正接线
反接线
lightning arrester
true leakage current
positive wiring
reverse wiring
