Authors: A.H.M.A. Rahim, E.P. Nowicki
Addresses: King Fahd University of Petroleum & Minerals, P.O. Box. 349, Dhahran 31261, Saudi Arabia. ' Department of Electrical Engineering, University of Calgary, Calgary, AB, Canada
Abstract: The dynamic performance of a power system can be improved by using additional signals in a unified power flow controller (UPFC) circuits. Self-tuning adaptive control of phase angle of shunt converter for stabilisation is considered in this article. From the input-output data record, a linear plant model of the UPFC is identified through a least square regressive algorithm. Stabilising control is derived for the identified model through a variable pole-shifting technique. A particle swarm optimisation (PSO) search procedure is employed to determine the control which minimises the error between the identified and actual system outputs. Simulations carried out with the pole-shifting stabilising control for a range of operation demonstrate extremely good damping profile. Comparison of the responses with the optimised PI controls verifies the robustness of the proposed adaptive algorithms.
Keywords: power system control; UPFC shunt control; particle swarm optimisation; PSO; adaptive control; self-tuning control; unified power flow controller; shunt converter; simulation.
International Journal of Power and Energy Conversion, 2009 Vol.1 No.4, pp.348 - 362
Published online: 29 Oct 2009 *Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article