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Coordinated Design of TCSC and PSS Controllers using VURPSO and Genetic Algorithms for Multi-machine Power System Stability

Ghazanfar Shahgholian*, Amir Movahedi, and Jawad Faiz
International Journal of Control, Automation, and Systems, vol. 13, no. 2, pp.398-409, 2015

Abstract : Thyristor controlled series capacitor (TCSC) can regulate line impedance and therefore increase transferred power of the system. On the other hand power system stabilizer (PSS) increases dynamic stability of generator. To enhance the stability, combination of TCSC and PSS can be applied, and in such a case coordination of TCSC and PSS is essential. This paper applies this combined controller in order to enhance the stability of multi-machine system. Parameters of these controllers are optimized by velocity update relaxation particle swarm optimization (VURPSO) algorithm and Genetic algorithm (GA). The simulation results show that the combination of VURPSO algorithm and GA leads to a better design and stability.

Keyword : Genetic algorithm, PSS, stability, TCSC, velocity update relaxation PSO.

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