| 新型换流变压器纵向不对称故障计算 |
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| 引用本文： | 方晖洋,方厚辉.新型换流变压器纵向不对称故障计算[J].电力系统及其自动化学报,2009,21(5). |
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| 作者姓名： | 方晖洋 方厚辉 |
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| 作者单位： | 湖南大学电气与信息工程学院,长沙,410082 |
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| 摘 要： | 为了分析新型换流变压器发生纵向不对称故障时的各电气量参数的变化情况,在研究新型换流变压器独特接线方案的基础上,通过相分量法建立了中性点不接地的新型换流变压器数学模型.基于所建立的数学模型,采用多态相分量法处理纵向故障的方法来计算新型换流变压器的纵向不对称故障.仿真结果验证了纵向不对称故障计算结果的正确性和精确性,这对新型换流变压器的继电保护发展具有一定的理论意义与实用价值.
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| 关 键 词： | 换流变压器 数学模型 纵向故障 多态相分量法 继电保护 |
Longitudinal and Asymmetric Fault Calculation for New-type Converter Transformer |
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| FANG Hui-yang,FANG Hou-hui.Longitudinal and Asymmetric Fault Calculation for New-type Converter Transformer[J].Proceedings of the CSU-EPSA,2009,21(5). |
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| Authors: | FANG Hui-yang FANG Hou-hui |
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| Affiliation: | FANG Hui-yang,FANG Hou-hui (College of Electrical , Information Engineering,Hunan University,Changsha 410082,China) |
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| Abstract: | In order to analyze the changes of electrical parameters when the longitudinal and asymmetric fault occurs on the new-type converter transformer,based on the study of the special connection scheme about the new-type converter transformer,the mathematic model is presented according to the phase-coordinate method when the neutral point isn't earth connection.Based on the mathematical model,the polymorphic phase-coordinate method is adopted to calculate the longitudinal and asymmetric faults for new-type conve... |
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| Keywords: | converter transformer mathematic model longitudinal fault polymorphic phase-coordinate method relay protection |
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