Robust Design of Power System Stabilizer using Harmony Search AlgorithmReport as inadecuate

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Automatika : journal for control, measurement, electronics, computing and communications, Vol.55 No.2 July 2014. -

In this paper, a novel Harmony Search algorithm HSA based approach for robust and optimal design of PID controller connected to power system stabilizer PSS is proposed for damping low frequency power oscillations of a single machine infinite bus bar SMIB power system. This paper attempts to optimize the three parameters Kp, Ki, Kd of PID-PSS via a music-based metaheuristic optimization algorithm inspired by the observation that the aim of music is to search for a perfect state of harmony. The problem of robustly selecting the parameters of the PSS is converted to an optimization problem which is solved by a Harmony Search Algorithm with a carefully selected objective function. The eigenvalue analysis and the simulation results obtained for internal and external disturbances for a wide range of operating conditions show the effectiveness and robustness of the proposed Harmony Search Algorithm based PSS HSAPSS. Further, the time domain simulation results when compared with those obtained using conventional PSS CPSS and Genetic Algorithm based PSS GAPSS show the superiority of the proposed design.

Harmony Search Algorithm; Power System Stabilizer; Power System Stability

Author: Kalifullah Abdul Hameed - ; Department of Electrical and Electronics Egineering, Anna University, K



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