Optimal Configuration of SVCs in Actual Power Grid Using Particle Swarm Optimization and Electromagnetic Transient Simulation

Abstract

As increasing load level and new technology emerges, penetration ratio of high voltage direct current transmission lines and renewable energy sources in power grid has been increasing. This brings new challenges to the reactive power control and voltage stability of the power system. Installing static var compensators is an effective solution to supply reactive power and improve voltage stability. The location and capacity of static var compensators have significant impacts to its performance. Correspondingly, the optimal configuration of location and capacity of static var compensators is an urgent problem to be studied. In this paper, a siting and sizing algorithm for the static var compensators based on electromagnetic transient simulation is derived, and the configuration of static var compensators is optimized using particle swarm optimization. Firstly, this paper designs a calculation method of the fault severity, and designs the optimization objective function which is based on and the fault severity and the total investment. Furthermore, this paper proposes the main process of the optimization algorithm, and introduces the generation method of the electromagnetic transient simulation model for the actual power grid. Finally, an actual AC-DC hybrid power grid with 1341 buses is studied to verify the proposed method and the results and the results demonstrate that the proposed method can effectively improve the voltage stability of AC-DC hybrid grids.