| 110kV线路故障导致变压器保护动作分析 |
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| 引用本文： | 王忠. 110kV线路故障导致变压器保护动作分析[J]. 山西电力, 2012, 0(2): 18-19 |
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| 作者姓名： | 王忠 |
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| 作者单位： | 大同供电分公司,山西大同037008;华北电力大学,北京102206 |
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| 摘 要： | 对110 kV变压器中性点过电压问题、接地方式的控制以及目前大同电网110 kV变压器零序过电压保护设计存在的安全隐患等进行了初步探讨,提出加大部分中性点间隙或提高动作值,改善变压器零序保护配合的措施。
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| 关 键 词： | 变压器 中性点 零序过电压保护 |
Analysis of Transformer Protective Action Caused by 110 kV Line Fault |
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| WANG Zhong. Analysis of Transformer Protective Action Caused by 110 kV Line Fault[J]. Shanxi Electric Power, 2012, 0(2): 18-19 |
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| Authors: | WANG Zhong |
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| Affiliation: | WANG Zhong(1.Datong Power Supply Company,Datong,Shanxi 037008,China; 2.North China Electric Power University,Beijing 102206,China) |
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| Abstract: | Neutral point over-voltage problem of 110 kV transformer and the control of grounding mode are explored in this paper.Besides,zero-sequence over-voltage protection of 110 kV transformer in Datong power grid is discussed in terms of the potential security trouble in design.It is suggested to widen the protective gap of neutral point or increase the action value and adopt suitable measures to improve transformer zero-sequence protection. |
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| Keywords: | transformer neutral point zero sequence over-voltage protection |
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