Title :
A comparative assessment of power swing detection techniques
Author :
Nayak, P.K. ; Rao, J. Ganeswara ; Kundu, P. ; Pradhan, A.K. ; Bajpai, P.
Author_Institution :
Dept. of Electr. Eng., IIT Kharagpur, Kharagpur, India
Abstract :
Distance relays, which respond to changes in impedance, may mal-operate due to power swings. For maintaining security, power swing blocking (PSB) function is utilized in modern distance relays to avoid unintended operation during power swing. However, if fault occurs during power swing, distance relays must operate. This paper reviews the shortcomings in the existing power swing detection techniques of distance relays. The concentric impedance characteristics scheme, the Vcosφ, the decreased resistance and the superimposed current methods are the conventional techniques for power swing detection for which a comparative assessment is carried out.
Keywords :
power engineering computing; power generation faults; power system protection; power system relaying; concentric impedance; distance relays; mal-operate; power swing blocking function; power swing detection; power swing fault; superimposed current methods; Discrete wavelet transforms; Relays; Resistance; Distance protection; power swing; single-phase fault; symmetrical fault;
Conference_Titel :
Power Electronics, Drives and Energy Systems (PEDES) & 2010 Power India, 2010 Joint International Conference on
Conference_Location :
New Delhi
Print_ISBN :
978-1-4244-7782-1
DOI :
10.1109/PEDES.2010.5712568
