| 小波变换在直流系统接地故障检测中应用 |
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| 引用本文： | 李冬辉,任晓栋. 小波变换在直流系统接地故障检测中应用[J]. 电子测量技术, 2004, 0(4): 7-8 |
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| 作者姓名： | 李冬辉 任晓栋 |
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| 作者单位： | 天津大学;天津大学 |
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| 摘 要： | 文中提出直流系统接地故障检测方法.该方法采用复值小波变换提取各支路信号中低频电流相量,通过计算其阻性分量来计算支路接地电阻,从而判断出故障支路.经过MATLAB仿真证明该方法能够有效的克服对地电容对故障检测的不利影响.
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| 关 键 词： | 小波变换 直流系统 接地故障 |
Application of Wavelet Transform in DC System Grounding Fault Detecting |
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| Li Donghui Ren Xiaodong. Application of Wavelet Transform in DC System Grounding Fault Detecting[J]. Electronic Measurement Technology, 2004, 0(4): 7-8 |
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| Authors: | Li Donghui Ren Xiaodong |
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| Abstract: | In this paper,a new method for DC system grounding fault detecting is presented.Complex wavelet transform is used to extract low frequency current phasor from the signal existing in each branch.The value of resistance current is calculated to get the value of insulating resistance.By this way the fault branch could be found.It is proved by MATLAB simulation analyzing that this method could eliminate the influence of the capacitors between ground and each branch efficiently. |
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| Keywords: | wavelet transform DC system grounding fault |
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