Optimizing Power System Wide-area Damping Controllers under Communication Time Delays and Model Reduction Errors

Duan, Chao, Li, Chongtao, Fang, Wanliang, Yao, Wei, Zhang, Chuanke and Jiang, Lin ORCID: 0000-0001-6531-2791 (2024) Optimizing Power System Wide-area Damping Controllers under Communication Time Delays and Model Reduction Errors Smart Power & Energy Security, 1 (1). pp. 36-48. ISSN 2949-8414

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Abstract

This paper tackles two pivotal challenges within Lyapunov-functional-based approaches to analyze and design power system damping control amidst communication time delays. The first challenge addresses the inadequacy of the reduced-order system model commonly employed in time-domain methods to accurately capture the stability of the original full-order system. By harnessing dissipativity theory, we introduce a model reduction technique coupled with a condition guaranteeing ϵ-exponential stability solely through the employment of the reduced closed-loop system model. This not only validates the use of model reduction strategies but also furnishes a theoretical underpinning for their application. The second challenge pertains to the computational complexity of nonlinear semidefinite programming problems encountered during the coordinated design of controllers. Rather than pursuing the global optimum, we advocate for a path-following methodology to systematically explore local solutions. This iterative algorithm enhances system damping and H 2 performance by orchestrating automatic and coordinated adjustments to control parameters. Numerical experiments conducted on various benchmark systems underscore the efficacy of the proposed approach.

Item Type:	Article
Uncontrolled Keywords:	40 Engineering, 4901 Applied Mathematics, 4007 Control Engineering, Mechatronics and Robotics, 49 Mathematical Sciences, 4010 Engineering Practice and Education
Divisions:	Faculty of Science & Engineering Faculty of Science & Engineering > School of Electrical Engineering, Electronics and Computer Science
Depositing User:	Symplectic Admin
Date Deposited:	27 Nov 2024 09:20
Last Modified:	26 May 2025 20:06
DOI:	10.1016/j.spes.2024.10.003
Open Access URL:	https://www.sciencedirect.com/science/article/pii/...
Related Websites:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3188898
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