| 和应涌流对内桥接线变压器差动保护的影响 |
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| 引用本文： | 杜继伟,陈军.和应涌流对内桥接线变压器差动保护的影响[J].电力科学与技术学报,2012,27(3):62-66. |
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| 作者姓名： | 杜继伟 陈军 |
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| 作者单位： | 1. 四川省电力公司遂宁公司,四川遂宁,629000
2. 四川省电力公司调度控制中心,四川成都,610041 |
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| 摘 要： | 分析变压器并联和应涌流的产生机理,通过仿真得出变压器和应涌流波形;对变电站内桥接线,电流互感器二次接线进行介绍,简要分析励磁涌流对差动保护的影响,考虑电流互感器的饱和特性、差动保护原理和变压器负载,详细研究和应涌流对内桥接线变压器差动保护的影响;结合分析结果提出一些应对措施.
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| 关 键 词： | 变压器 励磁涌流 和应涌流 差动保护 内桥接线 |
Influence of sympathetic current on transformer differential protection with inner bridge connection |
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| DU Ji-wei
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CHEN Jun.Influence of sympathetic current on transformer differential protection with inner bridge connection[J].JOurnal of Electric Power Science And Technology,2012,27(3):62-66. |
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| Authors: | DU Ji-wei CHEN Jun |
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| Affiliation: | 1. Suining Breach of Siehuan Power Electric Corporation, Suining 629000, China; 2. Dispatching Centre of Sichuan Power Electric Corporation, Chengdu 610041, China) |
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| Abstract: | The mechanism of transformer sympathetic interaction with parallel connection is analyzed in this paper. The substation internal bridge connection and current transformer secondary connection are introduced. The effect of the magnetizing inrush current on transformer different protection is discussed, and the influence of sympathetic current on the different protection is also investigated in detail with the saturation characteristics of current transformer, the brake principle of differential protection and the load of transformer considering. At last, some measures have been put forward to improve the differential protection performance. |
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| Keywords: | transformer inrush current sympathetic current differential protection internal bridge connection |
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