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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Sustainable Energy Systems
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1427593
This article is part of the Research Topic Emerging Technologies for the Construction of Renewable Energy-Dominated Power System View all 24 articles

Development of Equivalent System Frequency Response Model Based on Aggregation of Distributed Energy Storage Systems

Provisionally accepted
Shuyin Duan Shuyin Duan 1Jinjia Zhang Jinjia Zhang 2*Lei Yu Lei Yu 1Zexiang Cai Zexiang Cai 2
  • 1 State Key Laboratory of HVDC (Electric Power Research Institute), China Southern Power Grid (China), Guangzhou, Guangdong Province, China
  • 2 South China University of Technology, Guangzhou, China

The final, formatted version of the article will be published soon.

    Energy Storage Systems (ESS) installed in distribution networks have been widely adopted for frequency regulation services due to their rapid response and flexibility. Unlike existing ESS designing methods focusing on control strategies, this paper proposes a new method based on ESS equivalent aggregated model (EAM) for calculating the capacity and the droop of ESS to maintain system frequency nadir and quasi-steady state frequency using low-order functions.The proposed method (i) uses first-order functions to describe the frequency response (FR) of synchronous generators (SGs), (ii) ignores the control strategies of SGs, making the method systematic and allowing it to avoid analyzing complex high-order functions and (iii) is suitable for low inertia systems. The applicability and accuracy of the method is demonstrated using a modified four-generator two-area (4G2A) system.

    Keywords: Energy Storage System (ESS)1, distribution network2, synchronous generator (SG)3, frequency response (FR)4, capacity5, droop6

    Received: 04 May 2024; Accepted: 29 May 2024.

    Copyright: © 2024 Duan, Zhang, Yu and Cai. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Jinjia Zhang, South China University of Technology, Guangzhou, China

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