Optimized coordination of transmission network outages in interconnected power grids

摘要

This paper addresses an interesting problem for independent system operators (ISOs): the coordination of network maintenance schedule. Requested outages should be coordinated by the ISO to avoid unacceptable operating conditions and to perform the system risk evaluation, which requires the analysis of many operating scenarios to accommodate the planned outages. A methodology to solve this combinatorial problem is developed, based on an evolutionary algorithm that comprises strategies to control the diversification and intensification phases of the optimization process. Numerical results obtained with simulation studies, performed on four IEEE test-systems and the reduced southern Brazilian interconnected power system, are discussed. It is shown that the proposed approach can effectively lead to high-quality solutions in a reasonable computing time for short-term operation planning.