| 一起大型发电机定子接地事故分析及处理 |
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| 引用本文： | 陈熙平,马金涛,季杰,张伟,张杰,薛丽丽,吴丹. 一起大型发电机定子接地事故分析及处理[J]. 水电能源科学, 2014, 32(9): 167-170 |
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| 作者姓名： | 陈熙平 马金涛 季杰 张伟 张杰 薛丽丽 吴丹 |
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| 作者单位： | 锦屏水力发电厂， 四川 西昌 615000;锦屏水力发电厂， 四川 西昌 615000;锦屏水力发电厂， 四川 西昌 615000;锦屏水力发电厂， 四川 西昌 615000;锦屏水力发电厂， 四川 西昌 615000;锦屏水力发电厂， 四川 西昌 615000;锦屏水力发电厂， 四川 西昌 615000 |
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| 摘 要： | 针对某大型发电机定子接地故障,建立发电机单相接地故障模型,根据故障时的现场故障录波波形和数据,利用Matlab软件分析计算出故障时的零序电压和过渡电阻,并获得零序电压随接地电阻变化的轨迹,准确定位出故障点位置,分析结果与现场故障数据相吻合,进而给出故障处理方法,对设备制造、安装等提出了参考建议,可为今后类似故障分析、处理提供参考依据。
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| 关 键 词： | 定子接地； 发电机； 事故分析； Matlab |
Analysis and Handling of Large-sized Generator Stator Grounding Fault |
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| CHEN Xiping,MA Jintao,JI Jie,ZHANG Wei,ZHANG Jie,XUE Lili and WU Dan. Analysis and Handling of Large-sized Generator Stator Grounding Fault[J]. International Journal Hydroelectric Energy, 2014, 32(9): 167-170 |
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| Authors: | CHEN Xiping MA Jintao JI Jie ZHANG Wei ZHANG Jie XUE Lili WU Dan |
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| Affiliation: | Jinping Hydropower Station, Xichang 615000, China;Jinping Hydropower Station, Xichang 615000, China;Jinping Hydropower Station, Xichang 615000, China;Jinping Hydropower Station, Xichang 615000, China;Jinping Hydropower Station, Xichang 615000, China;Jinping Hydropower Station, Xichang 615000, China;Jinping Hydropower Station, Xichang 615000, China |
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| Abstract: | Aiming at the stator grounding fault of a certain large generator, a model of single-phase-to-earth fault for generator is established. According to the fault wave graphics and data, Matlab software is used to calculate zero-sequence voltage and transition resistance. And the zero-sequence voltage trajectory with grounding resistance was obtained and the fault location was accurately located. The results coincided with the field fault data. This paper gave the fault handing measures, which provided reference for similar fault analysis and settlement. Reference to the proposed was gave of equipment manufacturing and installation in the end. |
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