发电电动机转子状态在线监测系统设计  

Design of Rotor State on-line Monitoring Systems for a Generator-motor

作　　者：卢伟甫 毕纯辉 刘今越 于姗 LU Weifu;BI Chunhui;LIU Jinyue;YU Shan(Pumped-storage Technological&Economic Research Institute State Grid Xinyuan Company Ltd.,Beijing 100761,China;HADONG National Engineering Research Center-Hydropower Equipment Company Ltd.,Harbin 150090,China;North China Electric Power University,Beijing 100096,China)

机构地区：[1]国网新源控股有限公司抽水蓄能技术经济研究院,北京市100761 [2]哈动国家水力发电设备工程技术研究中心有限公司,哈尔滨市150090 [3]华北电力大学,北京市100096

出　　处：《水电与抽水蓄能》2023年第2期35-39,共5页Hydropower and Pumped Storage

基　　金：国家电网有限公司科技项目“发电电动机磁极引线及连接线设计安全评估方法研究”(52573017000D)。

摘　　要：为避免发电电动机转子裂纹、部件变形等缺陷扩大导致严重机械故障,亟需转子状态在线监测系统实现早期预警。本文针对转子高速旋转特点,设计了转子温度和应变的状态在线监测系统。温度在线监测系统由红外热辐射测温装置、高速工业相机、测控计算机组成;应变在线监测系统由应变数据采集系统、信号传输和供电系统、上位计算机组成。本系统通过红外设备在线监测关键部位的温度,再配合高清摄像仪拍摄的转子端部运行过程中相应部位的图像,同时配合应变片采集到的磁极部件在应力下的变形,可实现转子裂纹导致的局部温度升高、应力造成的局部变形等缺陷的在线监测。本监测系统抗磁、抗震,可在转子状态在线监测系统的工程应用中推广。In order to avoid serious mechanical faults caused by the expansion of defects such as rotor crack and component deformation of generator-motor,it is urgent to realize early warning by online monitoring system of rotor state.In this paper,online monitoring systems for rotor temperature and strain are designed according to the characteristics of high-speed rotation.The temperature online monitoring system is composed of infrared thermal radiation temperature measurement device,highspeed industrial camera and measurement and control computer.The strain online monitoring system is composed of strain data acquisition system,signal transmission and power supply system,and upper computer.In the systems,the temperature of the key parts is monitored online by infrared equipment,and the images of the corresponding parts in the operation process of the rotor end captured by the high-definition camera are combined with the deformation of the magnetic pole components collected by the strain gauge under stress.The online monitoring of defects such as the local temperature rise caused by the rotor crack and the local deformation caused by stress can be realized.The monitoring system is antimagnetic and anti-seismic,and can be popularized in engineering application of on-line monitoring system for rotor state.

关 键 词：转子温升 裂纹 应变 在线监测系统 

分 类 号：TM312[电气工程—电机]