A reliability-based approach for integrated generation and transmission maintenance coordination in restructured power systems

Abstract

In a restructured power system, optimal maintenance coordination is one of the main concerns of system operators which is closely related to power system reliability and security. In this paper, a reliability-based generation and transmission maintenance coordination mechanism is addressed. The approach highlights the ISO viewpoint through a two-phase coordination mechanism. Reliability and security-constrained unit commitment are also considered in the model. Moreover, a new approach for the estimation of maintenance criticality indices is proposed. The mathematical model is integrated as a multi-objective problem in which reliability and social welfare objectives are employed. The model is solved by a two level solution method of genetic algorithm and quadratic programming. In order to evaluate the performance of the approach, a modified IEEE 30-Bus is employed, which emphasizes the effectiveness and applicability of the proposed method.