An Algorithm for the Protection of Distribution Feeders Using the Stockwell and Hilbert Transforms Supported Features  

作　　者：OM Prakash Mahela Jaya Sharma Bipul Kumar Baseem Khan Hassan Haes Alhelou 

机构地区：[1]the Power System Planning Division,Rajasthan Rajya Vidyut Prasaran Nigam Ltd.Jaipur-302005,India [2]Department of Electrical Engineering,Rajasthan College of Engineering for Women,Jaipur,India [3]the Department of Electrical and Computer Engineering,Hawassa University,Hawassa 1530,Ethiopia [4]the Department of Electrical Power Engineering,Faculty of Mechanical and Electrical Engineering,Tishreen University,Lattakia 2230,Syria

出　　处：《CSEE Journal of Power and Energy Systems》2021年第6期1278-1288,共11页中国电机工程学会电力与能源系统学报（英文）

摘　　要：Faults’recognition in the distribution feeders(DFs)is extremely important for improving the reliability of the distribution system.Therefore,this paper proposes a technique to identify the faults on the DF using the Stockwell Transform(ST)dependent variance feature and Hilbert transform(HT)by utilizing current signals.By element to element multiplication of the H-index,we compute using HT aided decompositions of current waveforms and VS-index,and calculate through ST aided decomposition of current waveforms.By utilizing the decision rules,various faults are classified.Different faults studied in this work are line to ground,double line,double line to ground and 3-Φto ground.For high fault impedance,this technique is effectively utilized.Furthermore,variations in the fault incidence angles are also utilized to test the performance of the proposed technique.To perform the proposed algorithm,a IEEE-13 bus system is developed in MATLAB/Simulink software.The algorithm effectively classified the faults with accuracy greater than 98%.The algorithm is also successfully validated on the IEEE-34 bus test system.Furthermore,the algorithm was successfully validated on the practical power system network.It is recognized that the developed method performed better than the discrete Wavelet transform(DWT)and ruled decision tree based protection scheme reported in various literature.

关 键 词：Fault classification fault recognition H-INDEX VS-index 

分 类 号：TM714.2[电气工程—电力系统及自动化]