水力发电2017，Vol.43Issue(4)：51-54,4.
一起大型发电机中性点电流互感器故障诊断与分析
Diagnosis and Analysis on a Fault of Neutral Point Current Transformer for Large Generator
王明朗1
作者信息
- 1. 龙滩水电开发有限公司龙滩水力发电厂,广西天峨547300
- 折叠
摘要
Abstract
Through the diagnosis and analysis on a failure alarm of protection device in a large hydropower plant,it is clear that the fault is caused bv the damage of neutral point current transformer.According to operation experiences,some improvement measures are proposed,such as eonducting air passage test and technical reform of generator's ventilation system to reduce wind tunnel ambient temperature of generator,marking the thermal class of current transformer on the label according to national standards,using the current transformer with a thermal Class F or above for large generators,and arranging current transformers of adjacent phase with sufficient anti-interference distance.关键词
电流互感器/环境温度/耐热等级/邻近效应Key words
current transformer/ambient temperature/thermal class/proximity effect分类
建筑与水利引用本文复制引用
王明朗..一起大型发电机中性点电流互感器故障诊断与分析[J].水力发电,2017,43(4):51-54,4.
