RCAM model for Turkish National Power Transmission System: SF6 circuit breakers, transmission lines, transformer centers and protection relays

The reliability cost-worth conflict brought the necessity of improved management of the maintenance. RCM is continually improved together with proper asset management to meet this necessity. This study proposes an improved RCAM model to achieve cost-effective maintenance strategies for SF₆ circuit breakers, transmission lines, other components of the transformer centers and protection relays in 380 kV Turkish National Transmission System. Markov model of the existing maintenance procedure is constructed. Past outage data and current maintenance procedure details are used to calculate the model parameters. Some appropriate revisions validated by utility staff are made in inspection and test rates of the components. Finally, reliability indices and the costs are determined both for the existing maintenance procedure and for the improved one.