Title :
An importance sampling application: 179 bus WSCC system under voltage based hidden failures and relay misoperations
Author :
Bae, Koeunyi ; Thorp, James S.
Author_Institution :
Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA
Abstract :
Recent studies have shown that power system protection mechanisms have played a major role in propagating disturbances. Out of the last five major Western Systems Coordinating Council (WSCC) events in the USA (the North Ridge earthquake, December 14th 1994, July 2nd and 3rd 1996, and August 10th 1996), the latter three involved false trips with line protection relays and generators. Using an importance sampling-based algorithm on the 179 bus WSCC equivalent system, the authors modeled the sequence of rare events under generator trips and zone three relay misoperations. The resulting sequence of rare events and its corresponding probability are used to detect weak links in the power system
Keywords :
electric generators; machine theory; power system protection; power system relaying; power transmission lines; probability; relay protection; USA; Western Systems Coordinating Council power system; computer simulation; disturbance propagation; false trips; generator trips; importance sampling-based algorithm; line protection relays; power transmission protection mechanisms; rare events probability; rare events sequence; weak link detection; zone three relay misoperations; Bridge circuits; Databases; Monte Carlo methods; National electric code; Power system protection; Power system relaying; Power system reliability; Power system security; Protective relaying; Voltage;
Conference_Titel :
System Sciences, 1998., Proceedings of the Thirty-First Hawaii International Conference on
Conference_Location :
Kohala Coast, HI
Print_ISBN :
0-8186-8255-8
DOI :
10.1109/HICSS.1998.656010
