| 小波理论与行波理论在供电线路上的应用 |
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| 引用本文： | 周义明,李夏青.小波理论与行波理论在供电线路上的应用[J].北京石油化工学院学报,2005,13(1):13-17. |
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| 作者姓名： | 周义明 李夏青 |
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| 作者单位： | 北京化工大学,北京,100029;北京石油化工学院自动化系,北京,102617 |
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| 摘 要： | 介绍了行波在输电线路上的理论计算方法和传输特性,并结合实际提出了波阻抗和波速的简易测量方法,同时给出了小波变换的基本理论及小波基函数的选择依据.在此基础上,从故障测距、故障性质判断和继电保护三个方面提出了将行波理论与小波变换理论相结合在输电线路上的具体运用,该方法能够实现故障的精准定位,故障特征提取以及提高继电保护的灵敏性.
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| 关 键 词： | 行波理论 小波理论 输电线路 故障测距 行波保护 |
| 修稿时间： | 2004年10月11日 |
Research on Power Transmission Line Based on Wavelet Theory and Traveling Wave Theory |
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| Zhou Yiming,Li Xiaqing.Research on Power Transmission Line Based on Wavelet Theory and Traveling Wave Theory[J].Journal of Beijing Institute of Petro-Chemical Technology,2005,13(1):13-17. |
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| Authors: | Zhou Yiming Li Xiaqing |
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| Abstract: | Based on the traveling wave fundamental theory, this paper introduces the calculation method and transmission characteristics of traveling wave on power transmission line, puts forward the measuring method of wave impedance and wave velocity, and brings forward the wavelet transform theory and the selection of mother wavelet. On this basis, the combination of traveling wave theory and wavelet transform theory is proposed in aspects of fault location, fault type estimation and relay protection. It has been proved that precise fault location can be achieved, fault feature can be obtained, and the sensitivity of relay protection can be improved by using this method. |
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| Keywords: | traveling wave theory wavelet theory power transmission line fault location traveling wave protection |
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