Optimal proportional-integral controller design for statistic VAR compensator using particle swarm optimization algorithm

E. Baëta *, F. Ollennu

College of Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana


In a power system, the most crucial problem is maintaining system stability margins. The main important reasons for occurring stability problem in the system is due to the fault occurs in the power system. In this study, the effect of the statistic VAR compensator (SVC) on the voltage stability margin is investigated by a Proportional Integral (PI) controller. SVC is a parallel kind FACTS device that is used in the power system primarily for the target of voltage and reactive power control. The application of this paper is concerned with is the damping of sways of a synchronous generator and control of the power system voltage. The PI controller parameters of the SVC are of basic importance in ensuring it performs sufficiently. This article introduces a systematic method for PI controller design of an SVC using particle swarm optimization (PSO) algorithm. The PSO-PI controller sketch results in enhanced stability margin of a single machine connected to an infinite bus bar with the SVC system over the classical PI controller or non-controller.


SVC, PSO, Generator, PI controller, Voltage profile

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Article history

Received 20 March 2019, Received in revised form 15 July 2019, Accepted 16 July 2019

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Baëta E and Ollennu F (2019). Optimal proportional-integral controller design for statistic VAR compensator using particle swarm optimization algorithm. Annals of Electrical and Electronic Engineering, 2(8): 18-23

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