Title :
Availability of HV Circuit-Breakers: The Application of Markov Model
Author :
Choonhapran, P. ; Balzer, G.
Author_Institution :
Dept. of Electr. Eng., Tech. Univ. Darmstadt, Darmstadt
Abstract :
High voltage circuit-breakers are one of the most important equipment in power systems. They serve as interrupting devices which interrupt the operating and short-circuit currents. They are subject to many interruptions such as major failures and minor failures during lifetime. In order to study reliability and availability of HV circuit-breakers, these interruptions have been recorded in terms of database. In this study, the interruption database of different types of HV circuit- breakers from 1960s is applied in order to investigate the mean time to failure (MTTF). Afterwards, the Markov model of HV circuit- breakers composed of 5 components in parallel: drive, HV insulation, life-parts, control/auxiliary, and others is applied. The mean time to repair (MTTR) of each component is also taken into account. Finally, the results of Markov process show the reliability and availability of different types of HV circuit-breakers.
Keywords :
Markov processes; circuit breakers; maintenance engineering; power system protection; power system reliability; short-circuit currents; HV insulation; Markov model; high-voltage circuit-breaker availability; interruption database; mean time-to-failure; power system apparatus; reliability; short-circuit currents; Availability; Circuits; Databases; Hydraulic drives; Maintenance; Markov processes; Petroleum; Power system modeling; Power system reliability; Sulfur hexafluoride; HV circuit-breakers; Markov process; Mean time to failure (MTTF); Mean time to repair (MTTR); availability; parallel Markov model; reliability;
Conference_Titel :
Power Engineering Society General Meeting, 2007. IEEE
Conference_Location :
Tampa, FL
Print_ISBN :
1-4244-1296-X
Electronic_ISBN :
1932-5517
DOI :
10.1109/PES.2007.385673
