| 500kV变压器空投时涌流分析及保护误动预控措施 |
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| 引用本文： | 肖华宾,张杨迪. 500kV变压器空投时涌流分析及保护误动预控措施[J]. 广东电力, 2012, 0(7): 101-105 |
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| 作者姓名： | 肖华宾 张杨迪 |
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| 作者单位： | 神华广东国华粤电台山发电有限公司,广东台山,529228 |
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| 摘 要： | 在构造由多条500 kV输电线路、多台600～1 000 MW发电机组电力系统组成的物理模型的基础上,探讨和分析了500 kV变压器空载合闸过程产生励磁涌流及和应涌流的原因;阐述了涌流的特点和可能由此带来的实际问题;最后从消除剩磁、抑制涌流、合理设置保护定值3个方面提出了几种目前现场可以采取的预控管理措施。
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| 关 键 词： | 500kV变压器 励磁涌流 和应涌流 继电保护 预控措施 |
Inrush Current Analysis of 500 kV Transformer in No-load Condition and Precautions for Protection Malfunction |
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| XIAO Huabin , ZHANG Yangdi. Inrush Current Analysis of 500 kV Transformer in No-load Condition and Precautions for Protection Malfunction[J]. Guangdong Electric Power, 2012, 0(7): 101-105 |
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| Authors: | XIAO Huabin ZHANG Yangdi |
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| Affiliation: | (Shenhua Guangdong Guohua Yuedian Taishan Power Plant Co. , Ltd, Taishan, Guangdong 529228, China) |
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| Abstract: | On the basis of establishing a physical model composed of several 500 kV transmission lines and 600~ 1 000 MW generating units, the paper discusses and analyzes causes for inrush current and sympathetic current during no-load switching of 500 kV transformer; it elaborates on characteristics of inrush current and potential problems. In the end, the paper introduces some precautions in terms of residual magnetism elimination, inrush suppression and reasonable protection value setting. |
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| Keywords: | 500 kV transformer excitation inrush sympathetic inrush relay protection precaution |
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