Title :
A comparison of two numerical relay low impedance restricted earth fault algorithms in power transformer
Author :
Nimtaj, Babak ; Mahmoudi, Amin ; Palizban, Omid ; Kahourzade, Solmaz
Abstract :
Low impedance restricted earth fault protection is one of the protection functions to protect the transformer winding with earthed star point. This paper presents a critical comparison of restricted earth fault between General Electric algorithm and Siemens Algorithm. Advantages and disadvantages of selected algorithms are investigated based on speed, sensitivity and security. The relay operation characteristic curves and restraint currents for each of algorithms are simulated by MATLAB SIMULINK.
Keywords :
mathematics computing; power system protection; power transformer protection; transformer windings; General Electric algorithm; MATLAB; SIMULINK; Siemens algorithm; earthed star point; low impedance restricted earth fault protection; numerical relay; power transformer; transformer winding; Circuit faults; Fault currents; Manuals; Saturation magnetization; Surges; Transformer cores;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2011 8th International Conference on
Conference_Location :
Khon Kaen
Print_ISBN :
978-1-4577-0425-3
DOI :
10.1109/ECTICON.2011.5947959
