Low impedance restricted earth fault algorithms in numerical relays / Babak Nim Taj
Date of Award
8-10-2010
Thesis Type
other
Document Type
Thesis
Divisions
eng
Department
Dept of Electrical Engineering
Institution
University of Malaya
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.
Note
Dissertation (M.Eng.) - Jabatan Kejuruteraan Elektrik, Fakulti Kejuruteraan, Universiti Malaya, 2012.
Recommended Citation
Babak, Nim Taj, "Low impedance restricted earth fault algorithms in numerical relays / Babak Nim Taj" (2010). Student Works (2010-2019). 398.
https://knova.um.edu.my/student_works_2010s/398
3610-chapter_1.pdf (41 kB)
3610-chapter_2.pdf (462 kB)
3610-chapter_3.pdf (983 kB)
3610-chapter_4.pdf (6937 kB)
3610-chapter_5.pdf (24 kB)
3610-references.pdf (29 kB)