Title: Power system stability improvement by static synchronous series compensator-based damping controller employing gravitational search algorithm

Authors: Sangram Keshori Mohapatra; Sidhartha Panda; Prasant Kumar Satpathy

Addresses: Department of Electrical Engineering, C.V. Raman College of Engineering, Bhubaneswar – 752054, Odisha, India ' Department of Electrical and Electronics Engineering, Veer Surendra Sai University of Technology, Burla – 768018, Odisha, India ' Department of Electrical Engineering, College of Engineering and Technology, Ghatikia, Kalinga Nagar, Bhubaneswar – 751003, Odisha, India

Abstract: Power-system stability improvement by a static synchronous series compensator (SSSC)-based damping controller is thoroughly investigated in this paper. The present study considered both local and remote signals with associated time delays. The design problem of the proposed controller is formulated as an optimisation problem, and gravitational search algorithm (GSA) is employed to search for the optimal controller parameters. The performances of the proposed controllers are evaluated under different disturbances for both single-machine infinite bus power system and multi-machine power system. The performance of the proposed controllers with variations in the signal transmission delays has also been investigated. Simulation results are presented under various operating conditions and disturbances to show the effectiveness and robustness of the proposed approach.

Keywords: static synchronous series compensator; SSSC; controller design; time delay; power system stability; gravitational search algorithm; GSA; single-machine infinite-bus power systems; multi-machine power systems; damping control; optimisation; simulation.

DOI: 10.1504/IJCSE.2015.071878

International Journal of Computational Science and Engineering, 2015 Vol.11 No.2, pp.143 - 154

Received: 14 Sep 2012
Accepted: 24 Nov 2012
Published online: 22 Sep 2015 *

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