基于低压微安表法的特高压直流换流站多柱并联避雷器直流参考电压和泄漏电流测量方法的研究  

Research on DC reference voltage and leakage current of multi-column parallel arresters for UHV DC converter station based on low voltage micro-amperemeter method

作　　者：杨力 高立超 杨志华 龚源 Yang Li1 Gao Licha2 Yang Zhihua2 Gong Yuan2(1. State Grid Gansu Electric Power Company, Lanzhou 730030; 2. State Grid Gansu Electric Power Research Institute, Lanzhou 73007)

机构地区：[1]国网甘肃省电力公司,兰州730030 [2]国网甘肃省电力公司电力科学研究院,兰州730070

出　　处：《电气技术》2018年第2期105-108,共4页Electrical Engineering

摘　　要：特高压直流换流站直流场有很多并联运行的直流氧化锌避雷器,这些避雷器在交接试验或预防性试验时必须进行直流参考电压和泄漏电流测试,而现在对于避雷器参考电压和泄漏电流的试验方法还是采用常规交流避雷器的试验方法,这种常规方法只是适用于单只避雷器或多只串联避雷器,而对于多只并联运行的避雷器没有相应的试验方法。本文介绍了一种低压微安表测试法,可以在不拆除设备的情况下,准确测量出试验数据,减少工作量,并在一定程度上避免拆除避雷器带来的损伤。UHV DC Converter Station DC Field have a lot of Multi-Column Parallel, the lightning arrester must when handing over the test or preventive test for DC reference voltage and leakage current test, and now for the lightning arrester reference voltage and leakage current test method or the conventional AC arrester test methods, the conventional method is only suitable for single lightning arrester or more than series arrester, more than for the parallel operation of surge arrester without corresponding test method. In this paper, a low pressure microamps table test, the test method can be without dismantling equipment, accurately measure the test data, reduce the workload, and to a certain extent, to avoid damage caused by the demolition of surge arrester.

关 键 词：特高压直流换流站 并联避雷器 参考电压 泄漏电流 

分 类 号：TM862[电气工程—高电压与绝缘技术]