| 变压器方向过流保护拒动原因分析 |
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| 引用本文： | 张雪皎,余平,刘钟情. 变压器方向过流保护拒动原因分析[J]. 电力科学与工程, 2012, 28(1): 50-54. DOI: 10.3969/j.issn.1672-0792.2012.01.010 |
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| 作者姓名： | 张雪皎 余平 刘钟情 |
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| 作者单位： | 1.湖南省火电建设公司,湖南株洲,412000;2.二滩水电开发有限责任公司,四川成都,610000;3.攀枝花学院,四川攀枝花,617000 |
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| 摘 要： | 对某风电场低压侧电缆短路故障时变压器后备保护的复压闭锁方向过流保拒动原因进行了分析.改进过流保护定值后,通过理论分析和带负荷试验验证方向过流保护动作正确性.
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| 关 键 词： | 变压器保护 继电保护 后备保护 过流保护 |
Analysis of Failure Causes of Transformer Directional Over-current Protection |
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| Zhang Xuejiao , Yu Ping , Liu Zhongqing. Analysis of Failure Causes of Transformer Directional Over-current Protection[J]. Power Science and Engineering, 2012, 28(1): 50-54. DOI: 10.3969/j.issn.1672-0792.2012.01.010 |
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| Authors: | Zhang Xuejiao Yu Ping Liu Zhongqing |
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| Affiliation: | 1.Hunan Provincial Thermal Power Construct,Zhuzhou 412000,China; 2.Ertan Hydropower Development Company Ltd.,Sichuan 610000,China; 3.Panzhihua University,Panzhihua 617000,China) |
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| Abstract: | The case why complex-voltage-blocking directional over-current protection of transformer backup protection had miss operation when one wind farm low voltage side cable fault occurred is analysized.Theoretical analysis and on-load test verified the directional over-current protection action after improved the relay setting. |
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| Keywords: | transformer protection microcomputer-based relay protection back up protection over-current protection |
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