High-impedance fault detection in distribution networks with use of wavelet-based algorithm
High-impedance fault detection in distribution networks with use of wavelet-based algorithm
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DOI：
10.1109/tpwrd.2006.874581
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发表时间：
2006-10
影响因子：
4.4
通讯作者：
Marek Michalik;W. Rebizant;M. Lukowicz;Seung-Jae Lee;Sang-Hee Kang
中科院分区：
文献类型：
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作者：
Marek Michalik;W. Rebizant;M. Lukowicz;Seung-Jae Lee;Sang-Hee Kang
本文提出了一种应用小波变换技术的配电网电弧故障检测的简单有效的新算法。开发的保护算法观察在选定的高电平频率下为零序电压和电流信号计算的小波系数之间的相移。关于馈线关闭（或发出警报）的最终决定是通过确定性逻辑方案或使用专门为此目的训练的神经网络来满足的。开发的基于小波的高阻抗故障（HIF）检测器已经使用电磁瞬态程序-替代瞬态程序（ATP）生成的信号进行了测试，表现出比传统使用的算法和方法更好的性能。所提出的保护方法可用于独立于网络中性点接地模式的HIF检测。事实证明，该方案对于馈线通电和断电以及电容器组切换等正常事件期间产生的瞬态具有鲁棒性
A new simple and effective algorithm of arcing fault detection in distribution networks with the application of a wavelet transform technique is presented in this paper. The protection algorithm developed observes the phase displacement between wavelet coefficients calculated for zero-sequence voltage and current signals at a chosen high-level frequency. The final decision in regards to feeder switching off (or alarm issuing) is met either with a deterministic logic scheme or with the use of a neural net trained especially for that purpose. The developed wavelet-based high-impedance fault (HIF) detector has been tested with Electromagnetic Transients Program-Alternative Transients Program (ATP)-generated signals, exhibiting better performance than traditionally used algorithms and methods. The protection method proposed may be used for HIF detection independent of the network neutral-point grounding mode. The scheme proved to be robust against transients generated during normal events such as feeder energizing and de-energizing as well as capacitor bank switching