| 基于并联支路环流特征的转子匝间短路故障识别 |
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| 引用本文： | 李永刚,赵艳军,陈雷,纪璇.基于并联支路环流特征的转子匝间短路故障识别[J].高电压技术,2009,35(5):1014-1019. |
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| 作者姓名： | 李永刚 赵艳军 陈雷 纪璇 |
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| 作者单位： | 李永刚,陈雷,纪璇,LI Yong-gang,CHEN Lei,JI Xuan(华北电力大学电气工程学院,保定,071003);赵艳军,ZHAO Yan-jun(深圳中广核工程设计有限公司,深圳,518027)
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| 摘 要： | 汽轮发电机转子绕组匝间短路是一种常见的发电机故障,为了对其进行状态监测和故障识别,提出了基于定子绕组并联支路环流特性的汽轮发电机转子绕组匝间短路故障识别方法。通过分析汽轮发电机正常运行及转子匝间短路故障运行时各参数的变化,得到了定子绕组并联支路电压差和环流特性,即理想电机在正常运行时不存在电压差和环流,而转子匝间短路故障导致发电机定子绕组并联支路之间出现了电压差和环流,其大小和分布与短路严重程度呈对应关系。最后,实测了MJF-30-6型故障模拟发电机正常运行及故障运行时的环流信号,与理论分析结果基本符合。
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| 关 键 词： | 发电机 转子匝间短路 定子绕组 磁动势 并联支路环流 电压差 故障识别 |
Rotor Winding Inter-turn Short Circuit Fault Diagnosis Based on the Circulating Current in Stator Winding Parallel Branches |
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| LI Yong-gang,ZHAO Yan-jun,CHEN Lei,JI Xuan.Rotor Winding Inter-turn Short Circuit Fault Diagnosis Based on the Circulating Current in Stator Winding Parallel Branches[J].High Voltage Engineering,2009,35(5):1014-1019. |
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| Authors: | LI Yong-gang ZHAO Yan-jun CHEN Lei JI Xuan |
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| Affiliation: | 1. School of Electrical Engineering;North China Electric Power University;Baoding 071003;China;2. China Nuclear Power Design Co.;Ltd;Shenzhen 518027;China |
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| Abstract: | In order to monitor and diagnose the rotor winding inter-turn short circuit,which is one of the common generator faults,a method of generator fault diagnosis based on the circulating current was proposed. Through analyzing the parameters changing under normal operation conditions and rotor winding inter-turn short circuit fault of turbine generator,the circulating current characteristics were investigated based on the proposed formula. The investigation reveals that the generator does not have voltage diffe... |
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| Keywords: | generator rotor winding inter-turn short circuit fault stator winding magnetic force parallel branches circulating current voltage difference fault diagnosis |
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