浸水对低压电流互感器性能的影响分析  

Analysis of Influence of Water Immersion on Performance of Low Voltage Current Transformer

作　　者：丁涛 杨雷 华隽 王献军 陈习文 郭营 DING Tao;YANG Lei;HUA Juan;WANG Xian-jun;CHEN Xi-wen;GUO Ying(State Grid Henan Electric Power Company Marketing Service Center,Zhengzhou 450051,China;State Grid Henan Electric Power Company,Zhengzhou 450018,China;China Electric Power Research Institute Co.,Ltd.,Wuhan 430074,China)

机构地区：[1]国网河南省电力公司营销服务中心,河南郑州450051 [2]国网河南省电力公司,河南郑州450018 [3]中国电力科学研究院有限公司,湖北武汉430074

出　　处：《变压器》2022年第11期51-55,共5页Transformer

基　　金：国家电网有限公司总部科技项目(5217X0220003)。

摘　　要：本文作者针对特大暴雨造成的互感器浸水质量判定问题,开展了浸水试验。分析了绝缘电阻变化的原因,提出了浸水后绝缘电阻100MΩ的最低阈值,并对质量监督提出了相关建议。研究结论对经过长期浸水后的低压电流互感器能否继续使用提供了参考判据。Aiming at the problem of transformer quality judgment caused by heavy rainstorm, the immersed test is carried out. The reasons of insulation resistance change are analyzed. The minimum threshold value of insulation resistance 100MΩ after water immersion is put forward, and puts forward some relevant suggestions for quality supervision. The research conclusion provides a reference criterion for whether low voltage CT can continue to use after long-term immersion in water.

关 键 词：电流互感器 浸水特性 绝缘电阻 

分 类 号：TM452[电气工程—电器]