| 35kV杨柳站2^#主变差动保护误动作的分析与处理 |
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| 引用本文： | 袁文嘉,李敏霞,姬希军.35kV杨柳站2^#主变差动保护误动作的分析与处理[J].电力学报,2009,24(5):443-444. |
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| 作者姓名： | 袁文嘉 李敏霞 姬希军 |
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| 作者单位： | 1. 河南省电力公司,许昌供电公司,河南,许昌,461000
2. 许继电气公司,河南,许昌,461000 |
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| 摘 要： | 介绍了35 kV杨柳变电站2^#主变压器差动保护跳闸事故,通过进行现场保护特性试验、绝缘检查、二次回路电压测量,经过分析,得出事故原因：保护装置内部差动保护CT极性接反,同时负荷过大时,不平衡电流变大,超出差动电流整定值,从而造成了2^#主变差动保护跳闸事故。最后针对该设备运行中的缺陷提出了纠正措施,保证了电网的安全稳定运行。
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| 关 键 词： | 变电站 差动保护 极性 分析处理 |
35 kV Willow Station 2# Main Differential Protection Maloperation Analysis and Treatment |
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| YUAN Wen-jia,LI Min-xia,JI Xi-jun.35 kV Willow Station 2# Main Differential Protection Maloperation Analysis and Treatment[J].Journal of Electric Power,2009,24(5):443-444. |
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| Authors: | YUAN Wen-jia LI Min-xia JI Xi-jun |
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| Affiliation: | 1.Henan Power Crop.Xuchang supply company;Xuchang 461000;China;2.XJ Electric Crop.;China |
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| Abstract: | Yangliuqing 35 kV substation 2# main transformer differential protection tripping accidents,through on-site protection characteristic test,insulation inspection,secondary circuit voltage measurement,after analyzing the cause of the accident:the internal differential protection device to protect polar CT Then the anti-sexual,at the same time when the load is too large,unbalanced currents become larger,exceeding the differential current setting,resulting in a 2# Main differential protection of tripping accide... |
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| Keywords: | substation differential protection polarity analysis of treatment |
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