| 离散序列小波变换在微机继电保护中的应用 |
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| 引用本文： | 赵晓坦,苏鹏声. 离散序列小波变换在微机继电保护中的应用[J]. 电力系统保护与控制, 2002, 30(10): 37-40 |
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| 作者姓名： | 赵晓坦 苏鹏声 |
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| 作者单位： | 清华大学电机系，北京 100084 |
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| 摘 要： | 分析了电力系统常用的几种继电保护算法。针对电力系统对微机继电保护装置实时性、快速性的要求 ,提出了基于小波变换模极大值预测短路后故障相电流幅值的算法。与其他算法相比 ,该算法更能满足电力系统对继电保护装置提出的快速性要求。仿真计算结果证实了该算法作为电力系统短路故障诊断辅助算法的可行性、有效性
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| 关 键 词： | 微机继电保护 分解重构 Daubechies小波 |
| 文章编号： | 1003-4897(2002)10-0037-04 |
| 修稿时间： | 2002-03-28 |
The application of discrete wavelet transform in microprocessor-based protection of power system |
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| ZHAO Xiao tan,SU Peng sheng. The application of discrete wavelet transform in microprocessor-based protection of power system[J]. Power System Protection and Control, 2002, 30(10): 37-40 |
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| Authors: | ZHAO Xiao tan SU Peng sheng |
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| Abstract: | Several algorithms of protection are analyzed in this paper.And according to the real time feature of microprocessor based protection set,a new algorithm is studied.This algorithm makes use of the maximum absolute value of the signal's high frequency reconstruction part after discrete wavelet transform,predicting the magnitude of short circuit current in a short time.It is quicker than other algorithms.The simulation results show the effectiveness of this algorithm. |
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| Keywords: | microprocessor based protection decomposition and reconstruction Daubechies wavelet |
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