| 和应涌流引起的差动保护误动分析及对策探讨 |
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| 引用本文： | 赵萍,徐华.和应涌流引起的差动保护误动分析及对策探讨[J].华东电力,2009,37(7). |
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| 作者姓名： | 赵萍 徐华 |
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| 作者单位： | 台州电业局,浙江,临海,317000 |
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| 摘 要： | 介绍了某110 kV变电所现场主接线情况.根据一台变压器空载合闸造成另一台并联运行变压器差动保护动作的录波数据,验证了变压器空载合闸时相邻运行变压器中和应涌流的存在,分析了运行变压器差动保护误动的原因.讨论和应涌流对运行变压器的影响,并在此基础上探讨如何防止和应涌流引起的主变差动保护误动的对策.
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| 关 键 词： | 110 kV变电站 和应涌流 变压器 差动保护 |
Analysis and countermeasures of differential protection malfunctioning due to sympathetic current |
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| ZHAO Ping,XU hua.Analysis and countermeasures of differential protection malfunctioning due to sympathetic current[J].East China Electric Power,2009,37(7). |
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| Authors: | ZHAO Ping XU hua |
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| Affiliation: | Taizhou Electric Power Bureau;Linhai 317000;China |
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| Abstract: | The main connection of a 110 kV substation was presented.By using the recorded data on the differential protection operation of a transformer caused by no-load switch-on of another paralleled transformer,the existence of sympathetic current in the transformer paralleled to another one which is undergoing no-load switch-on was verified.The causes of differential protection malfunctioning of the transformer were analyzed.Influence of sympathetic current on operating transformers was discussed,and correspondin... |
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| Keywords: | 110 kV substation sympathetic current transformer differential protection |
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