| 新型基波在直流系统接地故障检测中的应用 |
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| 引用本文： | 阳细斌. 新型基波在直流系统接地故障检测中的应用[J]. 黑龙江电力, 2010, 32(1): 38-41 |
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| 作者姓名： | 阳细斌 |
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| 作者单位： | 广东电网公司阳江供电局,广东,阳江,529500 |
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| 摘 要： | 介绍了检测直流系统接地故障常用的低频信号注入法及其在使用过程中存在的缺陷,提出了基于小波变换的检测方法,经过MATLAB仿真分析,阐述了这种检测方法在对地大电容情况下能准确提取出低频电流相量特征,正确判断出故障支路。
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| 关 键 词： | 直流系统 接地故障 小波变换 |
Application of the wavelet transform in the DC system ground fault detection |
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| YANG Xibin. Application of the wavelet transform in the DC system ground fault detection[J]. Heilongjiang Electric Power, 2010, 32(1): 38-41 |
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| Authors: | YANG Xibin |
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| Affiliation: | YANG Xibin(Yangjiang Power Bureau of Guangdong Grid Corporation,Yangjiang 529500,China) |
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| Abstract: | This paper introduces the low frequency signal injection method adopted in the detection of grounding in the direct current system and the defects arising from the application and proposes the detection method based on wavelet transform.By MATL AB simulated analysis,the paper expounds that the method can abstract the phase characteristics of low-frequency current under large capacity and judge the branch circuit with faults correctly. |
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| Keywords: | direct current system grounding wavelet transformation |
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