A Study of the Reliability of Distribution System for Malfunction of Protective Relay

보호계전기의 오동작에 의한 배전계통 신뢰도에 대한 연구

Protection system is important part in distribution system. Protection system in power systems can fail either by not responding when they should(failure to operate) or by operating when they should not(false tripping). Customers has dissatisfied that due to the failure of protection system. The reliability of distribution system also has influenced. However, the failure of protection system can reduced by the maintenance. This paper has focused on malfunction of protection system. The approach is based on Markov models.