含分布式新能源和机电混合储能接入的微网协调控制策略

doi:10.19799/j.cnki.2095-4239.2023.0075

储能科学与技术 ›› 2023, Vol. 12 ›› Issue (5): 1510-1515.doi: 10.19799/j.cnki.2095-4239.2023.0075

• 喜迎东北大学建校百年-储能电池关键材料与循环技术专刊 • 上一篇下一篇

含分布式新能源和机电混合储能接入的微网协调控制策略

李斌¹(), 叶季蕾¹(), 张宇²(), 时珊珊², 王皓靖², 刘丽丽¹, 李明哲¹

^1.南京工业大学，江苏南京 211816
^2.国网上海市电力公司电力科学研究院，上海 200240

收稿日期:2023-02-15 修回日期:2023-03-07 出版日期:2023-05-05 发布日期:2023-05-29
通讯作者: 叶季蕾,张宇 E-mail:1449009859@qq.com;yejilei@njtech.edu.cn;p3chang@qq.com
作者简介:李斌（1997—），男，硕士研究生，研究方向为分布式新能源和储能联合优化运行，E-mail：1449009859@qq.com；
基金资助:
上海2020“科技创新行动计划”技术标准项目(20DZ2205400)

Microgrid-coordinated control strategy with distributed new energy and electro-mechanical hybrid energy storage

Bin LI¹(), Jilei YE¹(), Yu ZHANG²(), Shanshan SHI², Haojing WANG², Lili LIU¹, Mingzhe LI¹

^1.Nanjing TECH University, Nanjing 211816, Jiangsu, China
^2.State Grid Shanghai Power Company Electric Power Research Institute, Shanghai 200240, China

Received:2023-02-15 Revised:2023-03-07 Online:2023-05-05 Published:2023-05-29
Contact: Jilei YE, Yu ZHANG E-mail:1449009859@qq.com;yejilei@njtech.edu.cn;p3chang@qq.com

摘要/Abstract

摘要：

含分布式光伏等新能源接入的微网作为大电网的补充目前应用日趋广泛，但是随着新能源在微网系统中的占比比例不断增加，其出力的波动直接影响到微电网系统整体的稳定性。飞轮储能属于功率型储能系统，能够适应短时高频次充放电，相比于超级电容系统其环境适应性更好且全寿命周期内无污染。飞轮与电池储能系统相结合能够平滑分布式新能源出力波动，提升微网系统稳定性，但是飞轮储能和电池储能运行特性差别较大，控制难度较高，目前在微网系统内应用较少。本文设计了一种含分布式光伏、电池/飞轮机电混合储能系统接入的交直流混合微网运行拓扑，并在此基础上提出了基于电池/飞轮机电混合储能系统的微网系统协调控制策略，根据飞轮和电池剩余容量的不同，将混合储能系统划分为不同状态，以此为依据同时考虑不同类型储能系统输出额定功率和分布式新能源功率波动大小，对飞轮和电池的充放电电流进行调节，从而减小由于新能源接入引起的微网内功率波动。本文基于MATLAB/Simulink环境搭建了基于交直流混合母线的微网系统，仿真结果验证了所提微网协调控制策略的有效性。

关键词: 电池储能, 飞轮储能, 机电混合储能, 微网系统, 协调控制

Abstract:

Microgrid systems with distributed photovoltaic and other new energy sources are becoming widely used to supplement large power grids. However, with the increasing proportion of new energy in microgrid systems, the fluctuation in their output directly affects the overall stability of the microgrid systems. Flywheel is a powerful energy storage system that can adapt to short-term high-frequency charging and discharging and has better environmental adaptability and lesser pollution throughout the life cycle than the supercapacitor system. The combination of the flywheel and battery energy storage systems can smooth the fluctuations in the distributed new energy output and improve the stability of the microgrid system. However, the operating characteristics of flywheel and battery energy storage are quite different, and the control is difficult; thus, it is currently less used in microgrid systems. Herein, an AC and DC hybrid microgrid operation topology with distributed photovoltaic and battery-flywheel electromechanical hybrid energy storage system access is designed. Based on this, a coordinated control strategy of a microgrid system based on battery-flywheel electromechanical hybrid energy storage system is proposed. The control strategy divides the hybrid energy storage system into different states according to the remaining capacity of the flywheel and battery. It takes the output-rated power of different energy storage systems and the fluctuations in distributed new energy power simultaneously and adjusts the charging and discharging currents of the flywheel and battery to reduce the power fluctuations in the microgrid caused by new energy access. Herein, a microgrid system is built based on MATLAB/Simulink, and the simulation results verify the effectiveness of the proposed microgrid-coordinated control strategy.

Key words: battery energy storage, flywheel energy storage, electromechanical hybrid energy storage, microgrid system, coordinated control

中图分类号:

TM 7

李斌, 叶季蕾, 张宇, 时珊珊, 王皓靖, 刘丽丽, 李明哲. 含分布式新能源和机电混合储能接入的微网协调控制策略[J]. 储能科学与技术, 2023, 12(5): 1510-1515.

Bin LI, Jilei YE, Yu ZHANG, Shanshan SHI, Haojing WANG, Lili LIU, Mingzhe LI. Microgrid-coordinated control strategy with distributed new energy and electro-mechanical hybrid energy storage[J]. Energy Storage Science and Technology, 2023, 12(5): 1510-1515.

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SOC_f	SOC_b
SOC_f	低容	正常	高容
低容	M_LL	M_LN	M_LH
正常	M_NL	M_NN	M_NH
高容	M_HL	M_HN	M_HH

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含分布式新能源和机电混合储能接入的微网协调控制策略

Microgrid-coordinated control strategy with distributed new energy and electro-mechanical hybrid energy storage

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