| 发电机中性点局部放电在线监测系统研究 |
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| 引用本文： | 万元,李朝晖,薛松,罗曼.发电机中性点局部放电在线监测系统研究[J].水电能源科学,2009,27(4). |
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| 作者姓名： | 万元 李朝晖 薛松 罗曼 |
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| 作者单位： | 1. 华中科技大学,水电与数字化工程学院,湖北,武汉,430074
2. 中国长江电力有限责任公司,湖北,宜昌,443002 |
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| 摘 要： | 针对大型发电机定子绝缘的局部放电在线监测是预防发电机突发性事故的最有效手段,设计了一套发电机中性点局部放电在线监测系统,运用宽频带测量技术在发电机中性点获取局放信号,采用分层式网络结构框架提供局放的集成监测及远程诊断平台,验证了在发电机异常状况下局放传感器的高可靠性,分析了传感器的安装对发电机单相接地故障下的零序电压保护、故障接地电流、暂态过电压及高压系统传递过电压的影响.
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| 关 键 词： | 发电机 局部放电 在线监测 远程诊断 高可靠 单相接地故障 |
Study on Partial Discharge Online Monitoring System Mounted at Neutral Point for Electric Generators |
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| WAN Yuan LI Zhaohui XUE Song LUO Man.Study on Partial Discharge Online Monitoring System Mounted at Neutral Point for Electric Generators[J].International Journal Hydroelectric Energy,2009,27(4). |
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| Authors: | WAN Yuan LI Zhaohui XUE Song LUO Man |
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| Affiliation: | 1.College of Hydroelectricity and Digitalization Engineeing;Huazhong University of Science and Technology;Wuhan 430074;China;2.China Yangtze Power Corporation Limited;Yichang 443002;China |
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| Abstract: | Partial discharge(PD) online monitoring is considered as one of the most effective means to prevent sudden accident of HV equipments.A PD online monitoring system,which uses the wideband measurement techniques to obtain PD signal in the generator's neutral point for electric generator is developed.To provide a PD integrated monitoring and remote diagnostics platform,the system adopts the framework of hierarchical network structure.At the same time,the high reliability of PD sensor in the case of the generat... |
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| Keywords: | power generators partial discharge online monitoring remote diagnostics high reliability single-phase ground fault |
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