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

Abstract

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 SF 6 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.

A Novel Multi-Criteria Decision-Making Framework in Electrical Utilities Based on Gray Number Approach

“…In the power distribution and transmission network, [9][10] applied a multi-objective optimization framework to optimize maintenance policies using RCM concepts. There are a few examples where RCM has been used on specific types of components, as follows: RCM was used for transmission lines reported by [11]- [13], on voltage regulators by [14], on underground networks including cable systems by [15], on distribution overhead lines by [16], on gas turbine units by [17], on power transformers by [18] and [19], meanwhile on mediumvoltage circuit breakers [20] and [21], among other things. Nevertheless, the majority of the references listed above did not optimize the main solutions via a comprehensive study.…”