| 基于感应电压的SCOTT三相-两相平衡变压器保护原理研究 |
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| 引用本文： | 卢涛,韩正庆.基于感应电压的SCOTT三相-两相平衡变压器保护原理研究[J].继电器,2004,32(22):25-28. |
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| 作者姓名： | 卢涛 韩正庆 |
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| 作者单位： | 1.西南交通大学峨眉校区,四川 峨眉山 614202;2.西南交通大学电气工程学院,四川 成都 610031 |
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| 摘 要： | 在建立SCOTT平衡变压器电压回路方程的基础上,提出了一种基于感应电压的SCOTT三相-两相平衡变压器的保护原理,该原理能够避免二次谐波闭锁的比率制动差动保护的缺点。利用Matlab/Simulink工具,进行了计算机仿真,仿真结果表明该文提出的原理能够正确地区分变压器内部故障和励磁涌流。
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| 关 键 词： | SCOTT平衡变压器 内部故障 励磁涌流 感应电压 |
| 文章编号： | 1003-4897(2004)22-0025-04 |
| 修稿时间： | 2004年7月22日 |
Study of a novel protective scheme based on induced voltages for SCOTT three-phase to two-phase balanced transformer |
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| LU Tao,HAN Zheng-qing.Study of a novel protective scheme based on induced voltages for SCOTT three-phase to two-phase balanced transformer[J].Relay,2004,32(22):25-28. |
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| Authors: | LU Tao HAN Zheng-qing |
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| Affiliation: | LU Tao~1,HAN Zheng-qing~2 |
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| Abstract: | Based on voltage equations of SCOTT three-phase to two-phase balanced transformer, this paper proposes a novel protective scheme based on induced voltages. The proposed scheme can overcome the disadvantages of the percentage restrained current differential protection with secondary harmonic lock. The simulation is carried out by Matlab/Simulink, and the results indicate that the proposed scheme can correctly identify internal faults and inrush current. |
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| Keywords: | SCOTT balanced transformer internal fault inrush current induced voltage |
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