引用本文: | 梁仕斌,文华,曹敏,等.铁心剩磁对电流互感器性能的影响[J].电力系统保护与控制,2007,35(22):27-32.[点击复制] |
LIANG Shi-bin,WEN Hua,CAO Min,et al.The effects of remanent in CT core[J].Power System Protection and Control,2007,35(22):27-32[点击复制] |
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摘要: |
全面阐述了剩磁对电流互感器的危害。对电流互感器剩磁产生的原因,产生的途径进行了介绍,进而从理论上分析剩磁对测量用、保护用电流互感器性能产生的影响,并通过试验或引用测试结果验证了这种影响,最后提出消除剩磁对电流互感器影响的可行措施。 |
关键词: 电流互感器 剩磁 励磁特性 暂态特性 饱和 退磁 |
DOI:10.7667/j.issn.1674-3415.2007.22.007 |
投稿时间:2007-01-05修订日期:2007-07-20 |
基金项目: |
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The effects of remanent in CT core |
LIANG Shi-bin,WEN Hua,CAO Min,CHEN Zheng |
(Yunnan Electric Power Test & Research Institute,Kunming 650051,China) |
Abstract: |
This paper not only expatiates on the damage of remanent in CT core but also explains the causations and approachs of the remanent established. Follow on,it analyzes the effects on measuring CT and protective CT in theoretically. The effects of remanent in CT core are also validated by test and citing outcomes of the test.Finally,the paper puts forward some practicable solutions. |
Key words: current transformer remanent excitation characteristic transient performance saturation demagnetization |