| 基于磁饱和原理的变压器差动保护新方案 |
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| 引用本文： | 金明,刘远龙.基于磁饱和原理的变压器差动保护新方案[J].青岛大学学报(自然科学版),1997,10(3):74-78. |
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| 作者姓名： | 金明 刘远龙 |
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| 作者单位： | 青岛大学电气工程系!青岛266071 |
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| 摘 要： | 本文针对三相三柱式变压器提出了一种基于磁饱和原理的变压器差动保护新方案．文中利用ＥＭＴＰ程序进行了仿真计算，计算结果表明，本方案能有效地鉴别励磁涌流和内部故障时的短路电流，结果令人满意．
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| 关 键 词： | 电力变压器 磁制动 微机保护 |
A NEW COMPUTER-BASED FLUX-RESTRAINED CURRENT-DIFFERENTIAL RELAY FOR TRANSFORMER PROTECTION |
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| Jin Ming, Liu Yuanlong.A NEW COMPUTER-BASED FLUX-RESTRAINED CURRENT-DIFFERENTIAL RELAY FOR TRANSFORMER PROTECTION[J].Journal of Qingdao University(Natural Science Edition),1997,10(3):74-78. |
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| Authors: | Jin Ming Liu Yuanlong |
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| Abstract: | A new computer-based flux-restrained differential relay for three-phase three-limb power transformers are described in this paper. According to the new scheme, an algorithm for identifying the inrush current is presented. It is shown that this protection technique requires fewer computations as compared to the traditional method, and hence can be implemented on a microcomputer of modest capability. A variety of operating conditions simulated on a computer were used to test the algorithm. The results of the tests show that the algorithm performs well. |
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| Keywords: | power transformer flux-restrained microcomputer-based protection |
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