一种转子励磁绕组匝间短路故障检测方法  

A Method for Detecting Inter Turn Short-Circuit Fault of Rotor Field Winding

作　　者：韩建群 杨芷若 石旭东[2] HAN Jian-qun;YANG Zhi-ruo;SHI Xu-dong(College of Engineering, Bohai University, Jinzhou 121000, China;Aeronautical Automation College, Civil Aviation University of China, Tianjin 300300, China)

机构地区：[1]渤海大学工学院,辽宁锦州121000 [2]中国民航大学航空自动化学院,天津300300

出　　处：《控制工程》2018年第5期716-723,共8页Control Engineering of China

基　　金：国家自然科学基金资助项目(51277011)

摘　　要：针对凸极同步发电机发生转子励磁绕组匝间短路故障时谐波电流仿真和检测问题,通过多回路分析理论建立了凸极同步发电机数学仿真模型,并给出了无故障和存在转子励磁绕组匝间短路故障时谐波电流,然后提出杜芬混沌系统谐波电流检测方法,根据杜芬系统由混沌到周期状态的变化来确定故障谐波电流的存在。最后进行了仿真计算,结果表明杜芬混沌系统是可以有效地检测出故障存在的。Aimed at simulating and detecting the harmonic current when the inter turn short-circuit fault of rotor field winding occurs in salient-pole synchronous generator, firstly, the mathematical model of that synchronous generator is established on the basis of multi-loop theory（MLT）. Then, harmonic current is also given when the fault of rotor winding inter turn short-circuit exists or does not exist. Next, by utilizing the prominent feature of Duffing system when detecting sine signals, a method for detecting harmonic current is proposed on the basis of this system. In addition, the existence of fault harmonic current is identified through the conversion process from the chaotic state to the periodic state of Duffing system. Simulation results show that Duffing system can detect the fault effectively.

关 键 词：杜芬系统 凸极同步发电机 转子励磁绕组 匝间短路 故障检测 

分 类 号：TM622[电气工程—电力系统及自动化]