Optimization Design of Proportional-integral Controllers in High-voltage DC System Based on an Improved Particle Swarm Optimization Algorithm

Abstract

The control system plays an important role in the high-voltage direct-current transmission system. An improved particle swarm optimization algorithm is proposed and employed to design the optimal proportional-integral controllers in high-voltage direct-current system in this article. Simulation examples were implemented on the CIGRE HVDC Benchmark Model [Szechtman, M., Wess, T., and Thio, C. V., “First benchmark model for HVDC control studies,” CIGRE WG 14.02 Electra, No. 135, pp. 54–73, 1991], and the results of the standard particle swarm optimization algorithm and stable boundary law method were also given as contrasts. Simulation results showed that the proportional-integral controller designed by the proposed method can satisfy the requirements of stability and dynamic response performance indexes of high-voltage direct-current transmission system.

Keywords:

• high-voltage direct current
• particle swarm optimization
• proportional-integral controller