Work

Structure-constrained output feedback synthetic inertia decentralized control for two area power system

Year: 2025

Type: article

Abstract: Modern low-inertia power systems demand fast frequency-support schemes that exploit the synthetic inertia (SI) available in wind turbines. This paper develops a structure-constrained, decentralized output-feedback controller that delivers SI to a non-coherent power system using only local measurements, namely, frequency and wind-turbine states, thereby avoiding reliance on non-observable variables such as mechanical power and, eliminating the need for communication between areas under control operation. A data-driven, reduced-order model of a two-area system is derived from real events recorded in the Chilean National Electric System. The SI controller is obtained by solving an LMI-based “W-problem,” which guarantees closed-loop stability while enforcing a block-diagonal gain structure suited for decentralized implementation. Matlab-Simulink simulations confirm that the proposed scheme achieves global frequency stability during non-coherent transients using a minimal set of local measurements. The results confirm that reliable, cost-effective frequency stabilization can be achieved without extensive communication or battery energy storage, using the latent kinetic energy of variable-speed wind turbines.

Source: International Journal of Electrical Power & Energy Systems

DOI: 10.1016/j.ijepes.2025.111440

Authors: Aldo Barrueto, Carlos Fuentes, Hector Chavez, Karina Barbosa, Miguel Ramirez-Gonzalez

Institutions: Universidad Técnica Federico Santa María, ZHAW Zurich University of Applied Sciences

Language: English

Topic: Frequency Control in Power Systems

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $3,920