New Method of Wavelet Electric Current Grounding Line Selection Based on Wavelet Theory and Transient Zero Sequence Electric Current Comparision
Abstract：Analyzes the wavelet electic current grounding line selection device and select methods,a new line selection methods are proposed based on waveletnalysis and transient zero sequence electric current amplitude and phase comparison.First denoising little wave,then get the amplitude and polarity of each transient zero current signal,finally selects the line according to the information.This method still can select fault line under electromagnetic inteference background.And also it cannot be influenced by compensation degree,fault point and phase angle.The calcuation is simple and reliable.The accuracy and reliability of this method is testified by Matlab simulation.
Keywords：wavelet electric current grounding systemfault line selectionwavelet analysiszero sequence transient current
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 14-18 )