Title :
Optimal locations for protection system enhancement: a simulation of cascading outages
Author :
Wang, Hongye ; Thorp, James S.
Author_Institution :
Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA
fDate :
10/1/2001 12:00:00 AM
Abstract :
Recent studies have shown that hidden failures in the protective devices have a great impact on the power system reliability. In this paper, the authors provide definitions of vulnerability and reliability of protection systems to numerically characterize this impact. A random search algorithm based on power system heuristics is given for fast rare-event simulation of consecutive relaying malfunctions in bulk power systems. They also propose an economical system upgrading strategy that can best enhance the protection system reliability under limited budget. Finally, they present the result of a case study on New York Power Pool (NYPP) 3000-bus system
Keywords :
power system faults; power system protection; power system relaying; power system reliability; relay protection; search problems; bulk power systems; cascading outages simulation; consecutive relaying malfunctions; economical system upgrading strategy; fast rare-event simulation; hidden failures; power system heuristics; power system reliability; protection system enhancement locations optimisation; random search algorithm; vulnerability; Computational modeling; Monte Carlo methods; Power generation economics; Power system economics; Power system faults; Power system protection; Power system relaying; Power system reliability; Power system simulation; Protective relaying;
Journal_Title :
Power Delivery, IEEE Transactions on
