| 变压器和应涌流产生机理及其特性分析 |
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| 引用本文： | 武万才,边 疆,吴志勇.变压器和应涌流产生机理及其特性分析[J].电力自动化设备,2011,31(6):112-115. |
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| 作者姓名： | 武万才 边 疆 吴志勇 |
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| 作者单位： | 宁夏电力公司 吴忠供电局，宁夏 吴忠 751100;宁夏电力公司 吴忠供电局，宁夏 吴忠 751100;宁夏电力公司 吴忠供电局，宁夏 吴忠 751100 |
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| 摘 要： | 变压器在空载合闸或外部故障切除后电压恢复时在相邻变压器产生和应涌流,易引起相邻变压器差动保护和后备保护误动现象.基于磁链变化角度总结了和应涌流的产生机理,分析了和应涌流的波形特征及其变化特点.通过对2台单相变压器并联运行时1台空载合闸的分析和仿真,验证了和应涌流的产生机理,得出端口电压的变化使变压器磁链(磁通)发生变化...
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| 关 键 词： | 变压器 和应涌流 励磁涌流 电力系统保护 机理 特性 |
Principle and characteristics of transformer sympathetic inrush |
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| WU Wancai,BIAN Jiang and WU Zhiyong.Principle and characteristics of transformer sympathetic inrush[J].Electric Power Automation Equipment,2011,31(6):112-115. |
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| Authors: | WU Wancai BIAN Jiang and WU Zhiyong |
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| Affiliation: | WU Wancai,BIAN Jiang,WU Zhiyong(Wuzhong Electric Power Bureau of Ningxia Electric Power Company,Wuzhong 751100,China) |
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| Abstract: | The switch-on of an electric transformer without load or the voltage recovery after its external fault is removed will induce the sympathetic inrush in its adjacent transformer,which may result in the misoperation of differential protection and back-up protection of the adjacent transformer.Based on the flux variation,the principle of sympathetic inrush generation is summarized and its characteristics in waveform and variation are analyzed.Simulation with two single-phase transformers demonstrates that,the ... |
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| Keywords: | electric transformers sympathetic inrush magnetizing inrush electric power system protection principle characteristic |
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