摘要
某发电公司2号发电机C修期间发现转子绕组存在匝间短路异常,在转子直阻试验、转子交流阻抗及功率损耗试验数据合格情况下,采用重复脉冲法(RSO)试验,判断转子绕组存在和轴体角度有关的不稳定匝间短路异常。抽出转子在现场解体后,发现匝间短路异常位置与RSO试验结果相同,验证了相比于其他判断方法,RSO试验灵敏度高,方便快捷,可有效诊断转子绕组不稳定匝间短路异常。
During the C repair of No.2 generator of a power generation company,it was found that there was an abnormal turn-to-turn short circuit in the rotor winding.After passing the rotor direct resistance test,rotor AC impedance and power loss test data,the Recurrent Surge Oscilloscope(RSO)test was used to determine that there was an unstable turn-to-turn short circuit abnormality related to the shaft angle in the rotor winding.After disassembling the rotor on site,it was found that the abnormal position of the turn-to-turn short circuit was the same as the RSO test results,which verified that compared with other judgment methods,the RSO test has high sensitivity,convenient and fast,and can diagnose unstable turn-to-turn short circuit anomalies in the rotor winding effectively.
作者
苏显贺
曲占坤
刘越
白仕光
张海权
范继伟
SU Xian-he;QU Zhan-kun;LIU Yue(Datang Northeast Electric Power Test and Research Institute)
出处
《电站系统工程》
2025年第3期36-38,共3页
Power System Engineering
关键词
发电机
转子绕组
匝间短路
RSO试验
generator
rotor winding
turn-to-turn short circuit
RSO test
