重复脉冲法在凸极转子绕组匝间短路检测中的应用探索  

Study on the Application of Recurrent Surge Oscillograph Method in Detecting Inter-turn Short Circuit of Large Salient-pole Rotor Windings

作　　者：谭尚仁 杨增杰 高境 黄培勤 TAN Shangren;YANG Zengjie;GAO Jing;HUANG Peiqin(Huaneng Lancang River Hydropower Inc.,Kunming 650214,Yunnan,China)

机构地区：[1]华能澜沧江水电股份有限公司,云南昆明650214

出　　处：《水力发电》2024年第6期72-78,共7页Water Power

摘　　要：为了探索和推广重复脉冲检测法(RSO)在大型凸极式转子绕组匝间短路检测中的应用,参考在隐极发电机中的应用情况和经验,采取控制变量法,对某大型水轮发电机进行模拟试验,对比研究在不同的频率、波形、幅值和脉宽的激励信号作用下的响应和检测情况,得出了方波在传播过程中的衰减较锯齿波的小、信号传播中的衰减随频率上升而增大、脉宽过大时不利于故障判断、增大激励信号的幅值有利于提高故障检测的灵敏性等结论。In order to explore and popularize the application of Recurrent Surge Oscillograph(RSO)method in detecting inter-turn short circuit of large salient-pole rotor windings,the control variable method is adopted according to the application and experience in the hidden-pole generator,and a simulation test is carried out in a large hydro-generator to study the response and detection under the action of excitation signals with different frequencies,waveforms,amplitudes and pulse widths.It is concluded that,the attenuation of square wave is smaller than that of sawtooth wave,the attenuation in signal propagation increases with the increase of frequency,it is unfavorable to fault diagnosis when the pulse width is too large,and increasing the amplitude of the excitation signal is beneficial to improve the sensitivity of fault detection.

关 键 词：重复脉冲法(RSO) 转子绕组 匝间短路 凸极 水轮发电机 

分 类 号：TM312[电气工程—电机]