| 基于二维小波分析的配电网单相接地故障选线新方法 |
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| 引用本文： | 李晶.基于二维小波分析的配电网单相接地故障选线新方法[J].广东电力,2008,21(11):9-12. |
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| 作者姓名： | 李晶 |
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| 作者单位： | 沈阳工程学院,电气工程系,沈阳110136 |
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| 摘 要： | 将二维小波分析应用于配电网单相接地故障选线中，通过构造零序电流的解析信号，实现了对故障暂态信号幅值和相位相结合的分析．是一种接地选线的新方法。相对于单纯考虑幅值或相位的方法，这种结合分析能够更充分地提取丰富的故障暂态量特征信息．从而更加准确有效地实现故障选线。
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| 关 键 词： | Hilbert变换 二维小波分析 配电网 单相接地故障 |
A New Method for Single-phase Earth Fault Detection Based on Two-dimensional Wavelet Analysis in Power Distribution Network |
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| LI Jing.A New Method for Single-phase Earth Fault Detection Based on Two-dimensional Wavelet Analysis in Power Distribution Network[J].Guangdong Electric Power,2008,21(11):9-12. |
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| Authors: | LI Jing |
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| Affiliation: | LI Jing (Electrical Engineering Dept.. Shenyang Inst. of Engineering, Shenyang 110136, China) |
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| Abstract: | Two-dimensional wavelet analysis is applied to detection of single-phase earth faults in distribution network;by structuring analytic signals of zero-sequence current,the analysis combining amplitude and phase of fault transient signals is realized,which is a new method for earth fault detection.Compared with the use of single amplitude or single phase,applying combined signal can obtain more details of transient signal,and the fault can be located more exactly and effectively. |
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| Keywords: | Hilbert transform two-dimensional wavelet analysis power distribution network single-phase earth fault |
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