Load frequency control of interconnected power system with wide‑area hybrid energy storage

Authors

Zhiyuan LU, Key Laboratory of Advanced Perception and Intelligent Control of High‑end Equipment, Ministry of Education (Anhui Polytechnic University), Wuhu 241000, China
Shilin LIU, Key Laboratory of Advanced Perception and Intelligent Control of High‑end Equipment, Ministry of Education (Anhui Polytechnic University), Wuhu 241000, ChinaFollow
Baocheng FAN, Key Laboratory of Advanced Perception and Intelligent Control of High‑end Equipment, Ministry of Education (Anhui Polytechnic University), Wuhu 241000, China
Bo SUN, Key Laboratory of Advanced Perception and Intelligent Control of High‑end Equipment, Ministry of Education (Anhui Polytechnic University), Wuhu 241000, China

Keywords

wide‑area hybrid energy storage; interconnected power system; load frequency control; distributed model predictive control; state space model

Abstract

In order to solve the problems of insufficient flexible resources and poor regulation characteristics of power system frequency regulation, a load frequency coordination optimization control method based on distributed model predictive control is proposed for the interconnected power system with the wide‑area access of pumped storage and battery energy storage. Firstly, according to the frequency response characteristics of the main components in the interconnected power system, the state space model of the frequency response of the interconnected power system is established. Then, taking into account the constraints on the system, the optimal control targets are determined, and the controllers are designed in each area, respectively. Finally, the feasibility and effectiveness of the proposed load frequency coordinated optimization control method are verified in simulation. The results show that the method not only improves the frequency response characteristics of the wide‑area hybrid energy storage interconnected power system, but also enables different energy storage forms to respond reasonably when the system frequency changes.

DOI

10.19781/j.issn.1673-9140.2023.06.010

First Page

96

Last Page

104

Recommended Citation

LU, Zhiyuan; LIU, Shilin; FAN, Baocheng; and SUN, Bo (2024) "Load frequency control of interconnected power system with wide‑area hybrid energy storage," Journal of Electric Power Science and Technology: Vol. 38: Iss. 6, Article 10.
DOI: 10.19781/j.issn.1673-9140.2023.06.010
Available at: https://jepst.researchcommons.org/journal/vol38/iss6/10