Title: Damping of inter-area oscillations in multimachine systems

Authors: Jeevanandham Arumugam; Sumathi Jeevanandham; Mo Jamshidi

Addresses: Department of Electrical and Electronics Engineering, Bannari Amman Institute of Technology, Sathyamangalam – 638401, TamilNadu, India ' Department of Electrical and Electronics Engineering, Bannari Amman Institute of Technology, Sathyamangalam – 638401, TamilNadu, India ' Department of Electrical and Computer Engineering, University of Texas at San Antonio, 1 UTSA Cir, San Antonio, TX 78249, USA

Abstract: A classical lead-lag power system stabiliser is used for demonstration in this paper. Four machines ten bus system and ten machine 39 bus systems are considered. The stabiliser parameters are selected in such a manner to damp the inter area and rotor oscillations. The problem of selecting the stabiliser parameters is converted into a simple optimisation problem with an eigenvalue-based objective function and it is proposed to employ tabu search and simulated annealing for solving optimisation problem. The objective function allows the selection of the stabiliser parameters to optimally place the closed-loop eigenvalues in the left hand side of the complex s-plane. The tuning results of various combinations of machines are compared. Stability is confirmed through eigenvalue analysis and simulation results.

Keywords: inter-area oscillations; power system stability; robust control; tabu search; simulated annealing; multimachine systems; oscillation damping; rotor oscillations; tuning; optimisation; simulation.

DOI: 10.1504/IJAAC.2014.061654

International Journal of Automation and Control, 2014 Vol.8 No.1, pp.32 - 57

Received: 11 Dec 2012
Accepted: 11 Nov 2013
Published online: 30 Jun 2014 *

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