| 三相变四相电力变压器的差动保护原理 |
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| 引用本文： | 刘光晔,李欣然,刘庆丰. 三相变四相电力变压器的差动保护原理[J]. 电网技术, 2003, 27(8): 21-23 |
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| 作者姓名： | 刘光晔 李欣然 刘庆丰 |
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| 作者单位： | 湖南大学电气与信息工程学院,湖南省,长沙市,410082 |
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| 基金项目： | 国家自然科学基金资助项目(50247006) |
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| 摘 要： | 通过讨论一种特定的三相变四相电力变压器的电流变换矩阵，分析了实现不等相变换变压器差动保护的基本原则。首次构成了三相变四相变压器差动保护的两种典型接线方案，这两种接线方案均适合于所述变压器两侧中性点的接地或不接地运行方式。
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| 关 键 词： | 电力变压器 电流变换矩阵 差动保护原理 三相变四相电力变压器 |
PRINCIPLE OF DIFFERENTIAL PROTECTION FOR THREE-PHASE TO FOUR-PHASE TRANSFORMER |
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| LIU Guang-ye,LI Xin-ran,LIU Qing-feng. PRINCIPLE OF DIFFERENTIAL PROTECTION FOR THREE-PHASE TO FOUR-PHASE TRANSFORMER[J]. Power System Technology, 2003, 27(8): 21-23 |
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| Authors: | LIU Guang-ye LI Xin-ran LIU Qing-feng |
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| Abstract: | Through the discussion on the current transformation matrix for a specific three-phase to four-phase transformer, the basic principle to realize the differential protection for a transformer that transforms a multi-phase system to another one is analyzed. Two typical wiring schemes of the differential protection for three-phase to four-phase transformer is constructed for the first time, these two schemes are suited to the operating modes of grounding and ungrounding neutral points at the both sides of the above mentioned transformer. |
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| Keywords: | Differential protection for transformer Differential protection for balance transformer Differential protection for three-phase to four-phase transformer |
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