基于频域输入阻抗的发电机转子匝间短路故障诊断方法研究  

Research on Diagnosing Method for Inter-turn Short Circuit Fault of Generator Rotors Based on Input-impedance of Frequency Domain

作　　者：孙士涛[1] 雷雨[1] 张杰[1] 梅军 朱守舵 SUN Shitao;LEI Yu;ZHANG Jie;MEI Jun;ZHU Shouduo(North China Electric Power Research Institute Co.,Ltd.,Beijing 100045,China;Beijing Huaketonghe Technology Co.,Ltd.,Beijing 100045,China)

机构地区：[1]华北电力科学研究院有限责任公司,北京100045 [2]北京华科同和科技有限公司,北京100045

出　　处：《大电机技术》2020年第1期26-31,共6页Large Electric Machine and Hydraulic Turbine

摘　　要：基于发电机转子绕组的多导体传输线(MTL)模型仿真得到了转子绕组的频域输入阻抗,分析了其频谱的特点,提出了转子绕组匝间短路的频域输入阻抗增益诊断方法。仿真和实测数据表明,该方法能够有效诊断转子绕组的匝间短路故障,并能提供故障点的位置信息。Based on the multi-conductor transmission line(MTL)model of generator rotor winding,the input-impedance of frequency domain was obtained through simulation,then the characteristics of frequency spectrum was analyzed,and the gain diagnosing method based on input-impedance in frequency domain for inter-turn short circuit of rotor windings was proposed.The simulated and measured data showed that this method can effectively diagnose the inter-turn short-circuit fault of the rotor windings and provide the position information of the fault point.

关 键 词：频域输入阻抗 增益诊断方法 转子匝间短路 同步发电机 

分 类 号：TM307[电气工程—电机]