The condition-based maintenance concept for 500 kV circuit breakers in PLN P3B Jawa Bali — Indonesia

PLN P3B Jawa Bali is changing its maintenance strategy from time-based and corrective-based maintenance to a combination of time-based, corrective-based and condition-based maintenance. Because of its crucial function in a power grid, PLN P3B Jawa Bali is developing the condition-based maintenance for 500 kV circuit breakers. The keys of such maintenance strategy are inspections and assessment. This paper discusses the methodology of the improved maintenance strategies which aims to recognize the condition of a 500 kV circuit breaker. The concept development of the condition-based maintenance for 500 kV circuit breakers was approached by using the FMEA/FMECA technique. Accordingly, we need to implement visual inspection and in-service measurement as well as offline measurement.