| 几种波形对称法变压器差动保护原理的比较研究 |
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| 引用本文： | 林湘宁,刘世明,杨春明,刘沛.几种波形对称法变压器差动保护原理的比较研究[J].电工技术学报,2001,16(4):44-49,70. |
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| 作者姓名： | 林湘宁 刘世明 杨春明 刘沛 |
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| 作者单位： | 1. 华中科技大学电力系
2. 东方电子信息产业集团综自所 |
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| 摘 要： | 讨论了几种波形对称法变压器差动保护的原理和实现形状 ,分析了各自的可靠性和灵敏度 ,结果表明 ,与二次谐波原理相比 ,现有的波形对称原理能在涌流和故障并存的情况下分相动作 ,但在故障电流波形畸变严重的情况下 ,动作速度依然不够理想 ,在 (超 )高压大型变压器保护中的应用还有待进一步改进和完善
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| 关 键 词： | 变压器差动保护 励磁涌流 波形对称法 |
| 修稿时间： | 2001年3月26日 |
Study on Comparisons Among Some Waveform Symmetry Principle Based Transformer Differential Protection |
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| Lin Xiangning,Liu Shiming,Yang Chunming.Study on Comparisons Among Some Waveform Symmetry Principle Based Transformer Differential Protection[J].Transactions of China Electrotechnical Society,2001,16(4):44-49,70. |
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| Authors: | Lin Xiangning Liu Shiming Yang Chunming |
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| Affiliation: | Lin Xiangning Liu Shiming Yang Chunming (Huazhong University of Science and Technology 430074 China) Liu Pei(Group of DongFang Electronic Information Industr y Inc 264001 China) |
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| Abstract: | The principles and the constitutions of the criteri a of the present power transformer protections based on waveform symmetry scheme a re studied in this paperBesides,the reliabilities and sensitivities of them ar e analyzed and comparedSimulation and dynamic test results show that the pole -segregated tripping scheme can be implemented in the transformer differential protection as the waveform symmetry based scheme to identify the inrush is adopt edHowever,further studies should be done to improve the time delay of tripping when serious faults that make CT saturate occur |
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| Keywords: | Transformer differential protection Inrush Waveform s ymmetry scheme |
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