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Wavelet-alienation based protection scheme for multi-terminal transmission line

机译:基于小波异化的多终端传输线保护方案

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This paper presents a wavelet-alienation based protection scheme for multi-terminal transmission system. The proposed algorithm makes use of wavelet transform based approximate coefficients of three-phase voltage and current signals, obtained over a quarter cycle to detect, classify and locate various faults. Detection and classification of faults are achieved with the help of approximate coefficients based alienation coefficients of current signals, measured from all the buses of system. The approximate coefficients of voltage and current signals, obtained over a quarter cycle, are fed to artificial neural network to locate the faults precisely, from respective buses. This algorithm has been tested successfully for all the types of faults with variations in location, inception angle and fault impedance. The proposed protection scheme is generalized for N-terminal system followed by successful testing on three-terminal and five-terminal systems. (C) 2018 Elsevier B.V. All rights reserved.
机译:本文提出了一种基于小波异化的多终端传输系统保护方案。该算法利用基于小波变换的三相电压和电流信号的近似系数(在四分之一周期内获得)来检测,分类和定位各种故障。故障的检测和分类是通过基于近似系数的电流信号的异化系数实现的,该系数是从系统的所有母线测量的。在四分之一周期内获得的电压和电流信号的近似系数被馈送到人工神经网络,以从各个总线精确定位故障。该算法已针对位置,起始角度和故障阻抗变化的所有类型的故障成功进行了测试。提出的保护方案适用于N端子系统,然后在三端子和五端子系统上成功进行测试。 (C)2018 Elsevier B.V.保留所有权利。

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