Coordinated frequency regulation for thermal power unit and battery energy storage using dynamic proportional control

IF 5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Electrical Power & Energy Systems Pub Date : 2025-05-09 DOI:10.1016/j.ijepes.2025.110724

Gangui Yan , Qianli Sha , Junhui Li , Zheng Fang , Shuaishuai Lv , Shuo Zhan , Lin Yue

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Abstract

This paper addresses the issues of significant frequency regulation losses, short lifespan and poor economic performance of battery energy storage system in the combined frequency regulation process with the thermal power unit by proposing a coordinated frequency regulation control strategy for the thermal power unit and battery energy storage system using data-driven and dynamic proportional control. First, the mechanism model and operational data are combined to design a data-driven automatic generation control frequency regulation characteristic model for the thermal power unit, and a coordinated frequency regulation system model for the thermal power unit and battery energy storage system is then constructed, tailored to the automatic generation control frequency regulation environment. Considering the state of charge of battery energy storage system, the dynamic proportional control strategy for the thermal power unit and battery energy storage system is designed. The frequency regulation loss cost of the thermal power unit is quantified, and an economic model for the thermal power unit and battery energy storage system is constructed. Hippopotamus optimization algorithm is applied to optimize the relevant parameters of the dynamic proportional control strategy, resulting in a control scheme that maximizes overall benefits. Finally, the effectiveness and superiority of the proposed strategy are validated using one month of actual operational data from a 330 MW unit in a power plant.

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采用动态比例控制的火电机组与蓄电池协调调频

针对电池储能系统在与火电机组联合调频过程中存在的调频损失大、寿命短、经济性差等问题，提出了一种采用数据驱动和动态比例控制的火电机组与电池储能系统协调调频控制策略。首先，将机理模型与运行数据相结合，设计了数据驱动的火电机组自动发电控制调频特性模型，然后构建了适合火电机组自动发电控制调频环境的火电机组与蓄电池储能系统协调调频系统模型。考虑蓄电池储能系统的荷电状态，设计了火电机组与蓄电池储能系统的动态比例控制策略。量化了火电机组调频损耗成本，构建了火电机组与蓄电池储能系统的经济模型。采用河马优化算法对动态比例控制策略的相关参数进行优化，得到整体效益最大化的控制方案。最后，利用某电厂330mw机组一个月的实际运行数据验证了所提策略的有效性和优越性。

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来源期刊

International Journal of Electrical Power & Energy Systems 工程技术-工程：电子与电气

CiteScore

12.10

自引率

17.30%

发文量

1022

审稿时长

51 days

期刊介绍： The journal covers theoretical developments in electrical power and energy systems and their applications. The coverage embraces: generation and network planning; reliability; long and short term operation; expert systems; neural networks; object oriented systems; system control centres; database and information systems; stock and parameter estimation; system security and adequacy; network theory, modelling and computation; small and large system dynamics; dynamic model identification; on-line control including load and switching control; protection; distribution systems; energy economics; impact of non-conventional systems; and man-machine interfaces. As well as original research papers, the journal publishes short contributions, book reviews and conference reports. All papers are peer-reviewed by at least two referees.