Evaluation of generation and transmission maintenance strategies based on reliability worth

This paper describes a new methodology for measuring the impact of generation and transmission (G&T) maintenance strategies on the system reliability and on the associated costs. The proposed algorithm captures accurately the beginning and the end of all maintenance scheduling requests through a chronological or pseudo-chronological Monte Carlo simulation. Specific situations involving maintenance and repair outages are considered. In order to measure the performance of a given maintenance request, a strategy based on incremental costs has been proposed. These costs account for variations in production, revenues and reliability caused by maintenance schedules. Although, they are all random variables, the emphasis will be placed in the interruption costs and loss of potential revenue. Numerical examples are presented and the corresponding results are analyzed in detail. [Copyright &y& Elsevier]