Title :
Predicting the optimum routine test interval for protective relays
Author :
Kumm, J.J. ; Weber, M.S. ; Hou, D. ; Schweitzer, E.O., III
Author_Institution :
Schweitzer Eng. Lab. Inc., Pullman, WA, USA
fDate :
4/1/1995 12:00:00 AM
Abstract :
This paper discusses the goals of routine maintenance testing for protective relays. The paper advances a Markov probability model that predicts the optimum test interval for protective relays with and without self-testing capabilities. The model uses known system transition rates and relay failure rates. The probability model shows that the optimum test interval for a relay with self-tests is quite long
Keywords :
Markov processes; maintenance engineering; power system protection; probability; relay protection; Markov probability model; optimum routine test interval; power system protection; protective relays; relay failure rates; routine maintenance testing; self-testing capabilities; system transition rates; Automatic testing; Built-in self-test; Circuit testing; Condition monitoring; Digital relays; Maintenance; Power system relaying; Protection; Protective relaying; System testing;
Journal_Title :
Power Delivery, IEEE Transactions on
