| 主变压器差动保护误动故障实例分析 |
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| 引用本文： | 谭雨珍,程本良,孙世磊,李 晓. 主变压器差动保护误动故障实例分析[J]. 山东电力技术, 2016, 43(12): 42-45 |
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| 作者姓名： | 谭雨珍 程本良 孙世磊 李 晓 |
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| 作者单位： | ;1.华能烟台发电有限公司;2.国网山东省电力公司烟台市福山区供电公司 |
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| 摘 要： | 某110 kV变电站上线路6发生故障,导致该母线上所连接的4号主变压器差动保护误动。结合故障实例,对电流互感器(TA)饱和引发的主变差动保护误动进行详细分析,并制定出相应的整改方案及预防措施,以避免类似事故再次发生。
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| 关 键 词： | 变压器差动保护 TA饱和 保护误动 |
Malfunction Analysis of Differential Protection for Main Transformers |
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| Abstract: | A line fault in an 110 kV substation caused the protection mal-operation of No.4 main transformer which connected with the same bus. The transformer differential protection mal-operation caused by current transformer saturation was analyzed in detail combined with fault report. Improvement programs and precautionary measures were proposed to prevent similar incidents from happening again. |
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