| 变压器微机差动保护的频域算法 |
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| 引用本文： | 张利,张文,郭永新. 变压器微机差动保护的频域算法[J]. 山东大学学报(工学版), 2000, 30(2): 132-136 |
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| 作者姓名： | 张利 张文 郭永新 |
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| 作者单位： | 山东工业大学电力工程学院,济南,250061 |
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| 摘 要： | 对于变压器微机差动保护探讨一种新的算法.采用一种数字FIR滤波器的频域算法．根据所分析信号中含各次谐皮的情况和滤波要求，可得到一组代表约束条件的线性方程．最后求得满足指定频率特性的滤皮程序，可有效地抑制特定的高次谐波·利用这种新的算法，可实现以二次谐波为主的高次谐波制动的变压器差动保护．
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| 关 键 词： | 变压器；差动保护装置；频域分析 |
| 修稿时间： | 1999-12-02 |
FREQUENCY DOMAIN ALGORITHM OF COMPUTER-BASED TRANSFORMER DIFFERENTIAL PROTECTION |
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| Zhang Li,Zhang Wen,Guo Yongxin. FREQUENCY DOMAIN ALGORITHM OF COMPUTER-BASED TRANSFORMER DIFFERENTIAL PROTECTION[J]. Journal of Shandong University of Technology, 2000, 30(2): 132-136 |
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| Authors: | Zhang Li Zhang Wen Guo Yongxin |
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| Affiliation: | Zhang Li,Zhang Wen,Guo Yongxin;(Coll. Of Elec. Power Eng. ,Shandong Univ. Of Tech. ,Jinan 250061) |
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| Abstract: | A new algorithm of microcomputer-based transformer differential protection is proposed. With a frequency domain algorithm of numerical FIR filter, based on harmonics in the signal and the demands of filter, a group of lineal equations standing for constraining conditions can he gained, then filter program satisfied with specific frequency characteristic can be obtained. By using the new algorithm, transformer differential protection braked by high harmonics can be realized. |
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| Keywords: | Transformers Differential protective devices Frequency domain analysis |
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