Title :
Fault identification during power swings with symmetrical component
Author :
Yang, Q.X. ; Xu, Z.Y. ; Lai, L.L. ; Zhang, Z.H. ; Rajkumar, N.
Author_Institution :
Sifang Protectin & Control Ltd., Beijing, China
Abstract :
This paper presents a novel power network protection scheme during power swing blocking. The blocked protective relays will be released when the system restores to its normal operating conditions. The protection scheme is based on symmetrical components. EMTP simulation results show the proposed scheme in this paper are quite suitable for modern digital-based protective relays. Examples are shown for unbalanced fault cases
Keywords :
electrical faults; power system analysis computing; power system protection; power system relaying; power system restoration; relay protection; software packages; EMTP; blocked protective relays; computer simulation; operating conditions; power swing blocking; power system fault identification; protection scheme; symmetrical components; unbalanced fault cases; Artificial intelligence; Communication channels; Differential equations; EMTP; Fault diagnosis; Fuzzy logic; Fuzzy sets; Impedance; Protection; Protective relaying;
Conference_Titel :
Energy Management and Power Delivery, 1998. Proceedings of EMPD '98. 1998 International Conference on
Print_ISBN :
0-7803-4495-2
DOI :
10.1109/EMPD.1998.705448
