| 大容量电炉变压器保护差动方案比较 |
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| 引用本文： | 温靖华,刘志远.大容量电炉变压器保护差动方案比较[J].宁夏电力,2012(4):15-20. |
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| 作者姓名： | 温靖华 刘志远 |
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| 作者单位： | 宁夏电力公司调度通信中心,宁夏银川,750001 |
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| 摘 要： | 针对电炉变压器特殊结构难以实现常规差动保护的问题,采用新型电子式互感器,实现了电炉变压器低压侧电流的采集;并通过分析计算,设计了电炉变压器差动保护配置方案。结果表明:电炉变压器三侧纵差与高压侧分差构成逻辑"或"门输出,是电炉变压器差动配置的最佳方案。
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| 关 键 词： | 电炉变压器 差动保护 配置方案 动作特性 |
Comparison and analysis on differential protection schemes of large capacity electric furnace transformer |
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| WEN Jinghua,LIU Zhiyuan.Comparison and analysis on differential protection schemes of large capacity electric furnace transformer[J].Ningxia Electric Power,2012(4):15-20. |
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| Authors: | WEN Jinghua LIU Zhiyuan |
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| Affiliation: | (Dispatching Communication Center of Ningxia Electric Power Corporation,Yinchuan Ningxia 750001,China) |
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| Abstract: | Aiming at the problem of common differential protection difficult to realize for electric fur nace transformer,adopting new type of electronical mutual inductor,realizes electric current collec tion in low voltage side of electric furnace transformer;by analyzing and calculating,designs the differ ential protection allocation scheme of electric furnace transformer.The result shows that the three side longitudinal differential protection and high voltage branch side differential protection forming‘OR’ logic differential protection is the best differential protection allocation scheme for electric furnace transformer. |
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| Keywords: | electric furnace transformer differential protection allocation scheme action perfor mance |
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