| 一起风电场主变低压开关异常的保护动作分析 |
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| 引用本文： | 汪文东.一起风电场主变低压开关异常的保护动作分析[J].江苏电机工程,2013(6):15-18,22. |
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| 作者姓名： | 汪文东 |
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| 作者单位： | 国华江苏风电有限公司,江苏盐城224200 |
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| 摘 要： | 针对一起风电场220 kV变电站主变低压开关触头发热导致短路故障,对开关故障发生原因,相关35 kV母差保护、主变保护、风机集电线路保护动作情况进行了全面分析,重点对主变低后备保护拒动原因进行了分析,对如何预防故障,合理保护配置,降低故障影响进行了阐述,且避免同类事故的发生.
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| 关 键 词： | 风电场 变电站 主变 开关 保护配置 |
Analysis of Relay Protection Tripping Caused by a Fault on Low Voltage Switch of Main Transformer |
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| WANG Wendong.Analysis of Relay Protection Tripping Caused by a Fault on Low Voltage Switch of Main Transformer[J].Jiangsu Electrical Engineering,2013(6):15-18,22. |
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| Authors: | WANG Wendong |
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| Affiliation: | WANG Wendong (Guohua Jiangsu Wind Power Co., Ltd., Yancheng 224200, China) |
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| Abstract: | A short-circuit failure of the main transformer caused by overheat of its low voltage switch contact in a wind power plant＇s 220 kV substation is studied. The reason of the fault, the action of relative 35 kV differential busbar protection, the main transformer protection and the wind turbines protection are analyzed. Based on the analysis of the operation rejection of main transformer＇s low voltage level back-up protection, countermeasures and suggestions for preventing fault, deploying protections configuration and reducing fault effect are presented to avoid similar accidents. |
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| Keywords: | wind power plant transformer substation main transformers switch protection configuration |
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