Low impedance restricted earth fault algorithms in numerical relays / Babak Nim Taj

Babak, Nim Taj (2010) Low impedance restricted earth fault algorithms in numerical relays / Babak Nim Taj. Other thesis, University of Malaya.

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                  Abstract

                  Low impedance restricted earth fault protection is one of the protection function to protect the transformer winding with earthed neutral point. The purpose of this study is to investigate low impedance restricted earth fault algorithm in numerical relays. Five restricted earth fault numerical algorithms from ABB, AREVA T&D, SIEMENS, SCHNEIDER ELECTRIC and GENERAL ELECTRIC are employed for restricted earth fault algorithms assessment.This dissertation is to find out advantages and disadvantages of selected algorithms. Moreover, this dissertation is to compare each algorithm with the other algorithms. Also, magnetizing inrush current, over excitation and CT saturation impression on restricted earth fault operation is presented. After the algorithms assessment, two of them (Siemens and General Electric) are selected for simulation (MATLAB SIMULINK). These algorithms are compared and advantages and disadvantages of them are presented.

                  Item Type: Thesis (Other)
                  Additional Information: Dissertation (M.Eng.) -- Jabatan Kejuruteraan Elektrik, Fakulti Kejuruteraan, Universiti Malaya, 2012.
                  Uncontrolled Keywords: Electric power systems--Protection; Electric transformers--Protection
                  Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
                  Divisions: Faculty of Engineering
                  Depositing User: Nurul Aslini Ariffin
                  Date Deposited: 01 May 2013 12:02
                  Last Modified: 10 Jul 2013 12:01
                  URI: http://studentsrepo.um.edu.my/id/eprint/3610

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