A Simple Lyapunov Function Based Control Strategy for Coordinated Transient Stability Enhancement of Power Systems

Muluh, Fombu Andrew (Department of Electrical and Electronic Engineering, National Higher Polytechnic Institute, University of Bamenda, P.O. Box 39 Bambili, North West Region, Cameroon)
Sanjong Dagang, Clotaire Thierry (Department of Electrical and Power engineering, Research Unit of Automation and Applied Computer Science, IUT-FV Bandjoun, University of Dschang, P.O. Box 134, West Region, Cameroon)
Jean Pierre, Pesdjock Mathieu (Cameroonian Association for Research and Innovation in Energy, Technology and Environment, P.O. Box 59 Ebolowa, South Region, Cameroon)
Lionel Leroy, Sonfack (Department of Electrical and Power engineering, Research Unit of Automation and Applied Computer Science, IUT-FV Bandjoun, University of Dschang, P.O. Box 134, West Region, Cameroon)
Godpromesse, Kenne (Department of Electrical and Power engineering, Research Unit of Automation and Applied Computer Science, IUT-FV Bandjoun, University of Dschang, P.O. Box 134, West Region, Cameroon)

Indonesian Journal of Electrical Engineering and Informatics (IJEEI)
Vol 12, No 2: June 2024

Transient stability is still a serious impediment in power system operation due to their highly nonlinear nature. Over the last decades, a vast number of diverse nonlinear control algorithms for sub-controllers located at the generator subsystem and transmission lines have been developed to boost power system stability. However, for an effective and feasible operation of these power systems, coordination of these sub-controllers is very essential. In this paper, a simple direct Lyapunov based approach for coordinated control is proposed for global enhancement of power system stability. The proposed control scheme is achieved through the coordination of Lyapunov based decentralized steam valve, excitation and SSSC adaptive controllers. To test the efficacy of the proposed scheme, several comparisons in multi-machine fault scenarios with other design coordinated approaches are presented. Numerical simulations demonstrate the swiftness and efficacy of the proposed control scheme in boosting global stability.