大机组励磁变压器三相电流不平衡分析及处理

Analysis and Disposal for a Generator Excitation Transformer Current Imbalance

介绍了某火力发电厂5号发电机励磁变电流不平衡的概况和故障现象,通过对励磁系统相关部件进行检查,分析了此次励磁电流不平衡原因,解决了电流不平衡问题,提出了相应的防范措施,为发电机励磁系统的安全、稳定运行提供了保障。

General situation and fault phenomenon of No.5 generator excitation transformer current imbalance in some power plant are introduced. Through examination of the excitation devices, such as rectifying cabinet, alternating bus bar cabinet, dexcitation breaker cabinet, AVR cabinet, fault causes of excitation current imbalance are analyzed, then countermeasures are brought out, and to provide guarantee for safe and reliable operation.