Maintenance Scheduling of Transmission Systems Considering Coordinated Outages

Abstract

This paper presents a new algorithm for systematic coordinated maintenance of the elements of a transmission bay. The proposed method implements a knowledge-based Markov model to introduce a nonperiodic model for maintenance scheduling. The mode-based maintenance scheduling is implemented in this work, which is preferred to element-based one, due to the practical issues. To investigate the effects of maintenance on system's reliability, the network is modeled through its second-order equivalent cut set. Contrary to previous works, which consider each element separately, the presented approach tries to evaluate the optimum maintenance plan for entire elements of a bay by considering all elements of a bay together and coordinating the maintenance plan of each element. In this paper, various types of maintenance plan are considered, and the optimum plan for each element is evaluated using a genetic algorithm. Finally, the practicality of the proposed method is investigated using a typical transmission bay.