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.
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)
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)。
关键词
电流互感器
浸水特性
绝缘电阻
Current transformer
Water immersion characteristics
Insulation resistance
