变压器铁心多点接地分析及实例  

Analysis of Multi-point Grounding of Transformer Core and Application

作　　者：郭逢建 GUO Feng-jian(ABB Zhongshan Transformer Co.,Ltd,Zhongshan 528449,China)

机构地区：[1]中山ABB变压器有限公司

出　　处：《通信电源技术》2019年第6期16-18,共3页Telecom Power Technology

摘　　要：根据变压器铁心多点接地原理分析及计算,总结铁心多点接地回路中的感应电动势在不同设计中可能出现的最大值。在一起变压器油色谱异常和铁心及夹件接地电流异常案例中,结合油色谱历史数据分析,诊断变压器铁心接地电流异常的原因,并分析计算提出整改方案限制铁心接地电流,保障了变压器的正常运行。Based on the analysis and calculation of the principle of multi-point grounding of transformer cores,the possible maximum values of induction electromotive force in the multi-point grounding circuit of transformer cores in different designs are summarized. In a case of abnormal oil chromatography and abnormal grounding current of core and clamp, combined with historical data analysis of oil chromatography,the cause of abnormal grounding current of transformer core was diagnosed,and proposed solution to limit the grounding current of core and ensure the normal operation of transformer.

关 键 词：变压器 铁心多点接地 感应电动势 原理分析计算 油色谱分析 

分 类 号：TM407[电气工程—电器]