摘要
变压器绕组直流电阻测量可以检查变压器导体的连接情况。以一起220kV变压器分接开关连接不良,造成局部过热,引起绝缘油分解而产生特征气体的故障为例,结合变压器的直流电阻试验,根据绕组结构、接线、分接开关的工作原理进行分析,对今后快速有效地进行变压器故障点位置确定及处理具有一定的参考意义。
DC resistance measurement can be used for verifying the connections of transformer winding conductor.A bad contact situation happened in a 220 kV transformer tap changer,resulting in local overheating and consequently causing decomposition of oil and gas generation,is illustrated in this paper.Based on the DC resistance test of transformer,the structure of winding,the principle of wiring and the working principle of tap changer are analyzed.It provides important help to determine the fault point of transformer and to deal with it quickly and effectively.
作者
张金良
侯全兵
赵永亮
赵万里
董智
ZHANG Jinliang;HOU Quanbing;ZHAO Yongliang;ZHAO Wanli;DONG Zhi(Shandong Power Equipment Co.,Ltd.,Jinan 250022,China)
出处
《山东电力技术》
2020年第6期56-58,共3页
Shandong Electric Power
关键词
变压器
分接开关
直流电阻
绕组
transformer
tap changer
DC resistance
winding
作者简介
张金良(1982),男,高级工程师,从事变压器的技术研究工作。
