| 特高压变压器励磁涌流鉴别原理的研究 |
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| 引用本文： | 曾麟钧,李智,郑峰.特高压变压器励磁涌流鉴别原理的研究[J].电气开关,2009,47(1):65-67. |
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| 作者姓名： | 曾麟钧 李智 郑峰 |
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| 作者单位： | 三峡大学电气信息学院,湖北,宜昌,443002 |
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| 摘 要： | 变压器差动保护一直存在区分励磁涌流与内部故障电流的难题，1000kV特高压变压器保护也不例外。对特高压变压器进行的电磁暂态仿真及分析表明，最为传统的二次谐波制动方式在特高压变压器差动保护中的应用存在一定阻碍，而基于波形对称性的制动原理则可以在特高压变压器保护中较好的发挥作用。
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| 关 键 词： | 差动保护 励磁涌流 内部故障电流 特高压变压器 二次谐波 波形对称性 |
Study on Principle of Exciting Surge Current of UHV Transformer |
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| ZENG Lin-jun,LI Zhi,ZHENG Feng.Study on Principle of Exciting Surge Current of UHV Transformer[J].Electric Switchgear,2009,47(1):65-67. |
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| Authors: | ZENG Lin-jun LI Zhi ZHENG Feng |
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| Affiliation: | College of Electrical Engineering and Information;Three Gorges University;Yichang 443002;China |
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| Abstract: | There has been a problem of distinguishes exciting surge current and internal fault current in transformer differential protection,So does UHV transformer protection of 1000kV.Electromagnetic transient simulation and analysis for UHV transformer show that the most traditional second harmonic brake way has some block in UHV differental transformer protection.However,the brake principle based on waveform symmetry can be done well in the transformer. |
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| Keywords: | differential protection exciting surge current intenal fault current HUV transformer second hamonic wave form symmetry |
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