探测线圈法在汽轮发电机转子匝间短路监测中的优缺点分析  

Analysis of Advantages and Disadvantages of Detection Coil Test Methodin Turbine Generator Rotor Interturn Short Circuit Monitoring

作　　者：金泱 王新 王展宏 钱坤 张迪 JIN Yang;WANG Xin;WANG Zhanhong;QIAN Kun;ZHANG Di(Zhejiang Energy R&D Institute Co.,Ltd.,Hangzhou 311121,China;Zhejiang Key Laboratory of Energy Conservation&Pollutant Control Technology for Thermal Power,Hangzhou 311121,China)

机构地区：[1]浙江浙能技术研究院有限公司,杭州311121 [2]浙江省火力发电高效节能与污染物控制技术研究重点实验室,杭州311121

出　　处：《大电机技术》2023年第4期40-46,共7页Large Electric Machine and Hydraulic Turbine

摘　　要：转子绕组匝间短路故障是发电机转子常见故障之一。探测线圈法是监测转子绕组绝缘状况的常用方法。本文结合某台发电机转子匝间短路实际案例,表明了在因转子绕组变形导致的转子动态匝间短路故障诊断中,探测线圈法相较于其他测试方法具有可靠性高的优势。同时,探测线圈法存在安装条件苛刻、安装位置要求高、增加检修工序等缺点。通过综合比较,探测线圈法在发电机转子绝缘状况监测中起着重要作用,值得推广。The interturn short circuit fault of rotor winding is one of the common faults of generator rotor.Detection coil test is a commonly used method for monitoring the rotor winding insulation condition.In this paper,combined with the actual case of a generator rotor interturn short circuit,it shows that detection coil test method has the advantage of high reliability compared with other test methods in the fault diagnosis of the rotor dynamic interturn short circuit which caused by deformation of the rotor winding.This paper also pointed out that detection coil test method has the disadvantages of hard installation conditions,high installation location requirements and increased maintenance procedures.After comprehensively comparing the advantages and disadvantages of detection coil test method,we believe that the defects cannot obscure the virtues and it plays an important role in the monitoring of the generator rotor insulation status.So it is worthy of promotion.

关 键 词：探测线圈法 匝间短路 故障诊断 在线监测 转子 绝缘 

分 类 号：TM303.3[电气工程—电机]