Analysis of the Impact of Energy Storage System on Frequency Regulation Stability in Hydrothermal Power System Using State Space Modeling

Articles in Press

Document Type : Research Paper

Authors

1 Najafabad Branch, Islamic Azad University

2 Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

3 Cadiz University, Cadiz, Spain

10.22104/hfe.2025.7384.1342

Abstract

Energy storage systems have been considered in recent years to improve the performance of the power system. Normally, for a power system in which an instantaneous balance between generated power and consumed power must be maintained, no action is taken to store energy. Therefore, in this case, the network generation must move according to the load curve, and due to the variability of the consumed load, the operation of the power system will not be economical. Matching the total generated power with the total load demand, taking into account losses, requires satisfactory performance of the electric power system, so one of the important parts in any power system can be called the ability to control the load frequency. This paper examines the effect of one of the energy storage systems on improving the load frequency control performance in a power system with interconnected two-area steam and hydropower plants. First, the power system model with a superconducting magnetic energy storage unit is expressed in state space based on first-order differential equations. Then, using system mode analysis, the effect of the energy storage in the power system is investigated. The simulation results in the time domain using MATLAB software show the accuracy of the system mode analysis and dynamic behavior for load changes.

Keywords

Main Subjects

Hydrogen, Fuel Cell & Energy Storage

Articles in Press, Accepted Manuscript
Available Online from 07 May 2025

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