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Articles by H.A. Shayanfar
Total Records ( 2 ) for H.A. Shayanfar
  R. Jahani , A. Safari , J. Olamaei and H.A. Shayanfar
  This study presents a hybrid genetic and particle swarm optimization algorithms to seek the optimal number and location of FACTS devices in a power system. Unified Power Flow Controller (UPFC) has great flexibility that can control the active and reactive power flow and bus voltages, simultaneously. Decoupled model of the UPFC is applied to maximize the system loadability subject to the transmission line capacity limits and specified voltage level. Optimal placement of UPFC in power system by Hybrid of GA and PSO Algorithm (HGAPSO) algorithm, it leads to a flat voltage profile and increased stability and capacity of the power transmission in lines. At the end, the proof is performed by simulating and testing the 14 bus network and placement of the UPFC appropriately. The results show that the steady state performance of power system can be effectively enhanced due to the optimal location and parameters of the UPFC.
  H. Shayeghi , H.A. Shayanfar and A. Safari
  In this study, optimal tuning of the Thyristor Controlled Series Capacitor (TCSC) damping controller in a multi-machine power system is proposed using Theta-Particle Swarm Optimization (θ-PSO) technique. The design problem was converted to an optimization problem with the time domain-based objective function for a wide range of operating conditions. The effectiveness of the proposed controller is demonstrated on a multi-machine power system through the nonlinear time-domain simulation and some performance indices studies in comparison with the PSO based damping controller. The results analysis revealed that the tuned θ-PSO based TCSC damping controller using the proposed method has an excellent capability in damping power system inter area and local oscillations in comparison with designed Classical PSO (CPSO) based TCSC controller and enhances greatly the dynamic stability of the power system.
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