Rapid Transient Detection of Switching With the Aim of Improving Power Quality Using Wavelet Transform

Future Generation of Communication and Internet of Things

دوره 1، شماره 2، تیر 2022، صفحه 15-22   

نوع مقاله: Original Paper

نویسنده

Javad Safaei Kuchaksaraei^*

Department of Electrical Engineering, Shahmirzad Branch, Islamic Azad University, Semnan, Iran

چکیده

     Today due to the increasing consumption of electrical energy and the use of non-linear loads that create transient regime states in distribution networks, analysis of power quality for energy sustainability in power networks has become more important. Transients are often created by energy injection through switching or lightning and make changes in voltage and nominal current. Sudden increase or decrease in voltage or current makes characteristics of the transient regime. This paper investigates and identifies capacitor bank switching, which is one of the causes of oscillatory transient regime states in distribution network, using wavelet transform. By identifying the switching current of capacitor bank and the internal fault current of the transformer to prevent the unnecessary outage of differential relay, it will propose a new smart method. The accurate performance of this method is shown by simulation in EMTP and MATLAB                                             

کلیدواژه‌ها

wavelet transform؛ transient states؛ capacitor bank switching؛ internal fault current