Double-layer Power Distribution Strategy for Battery Storage Power Station Considering Energy Efficiency and State-of-charge Balance

被引：1

作者：

Ye H. ^{[1
]}

Li A. ^{[1
]}

Tian G. ^{[2
]}

Xie J. ^{[2
]}

Li Z. ^{[3
]}

机构：

[1] School of Electrical Engineering, Dalian University of Technology, Liaoning Province, Dalian

[2] School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Hubei Province, Wuhan

[3] Pinggao Group Energy Storage Technology Co., Ltd., Dongli District, Tianjin

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2024年 / 44卷 / 13期

关键词：

(non-dominated sorting genetic algorithms-II (NSGA-II); energy efficiency; energy storage plant; power allocation strategy; state of charge (SOC) balance;

D O I：

10.13334/j.0258-8013.pcsee.230396

中图分类号：

学科分类号：

摘要：

When the electrochemical energy storage power station is applied to frequency modulation, voltage regulation, and other power fluctuation conditions, there are problems such as low energy efficiency and unbalanced state of charge (SOC). This paper proposes a double-layer power distribution strategy for battery storage power stations considering energy efficiency and SOC balance, which mainly includes the unit optimization layer and the subsystem optimization layer: The unit optimization layer calculates the quantity and number of actual operating units through charging/discharging priority partition, establishes an optimization model aiming at the minimum energy consumption of the energy storage units, and uses genetic algorithm (GA) to solve the optimal solution set; The battery energy consumption model based on electrochemical impedance is introduced into the subsystem optimization layer, and the multi-objective optimization model is established with the minimum energy consumption and SOC balance as the objectives, and the non-dominated sorting genetic algorithms-II (NSGA-II) is used to solve the problem. The effectiveness of the proposed strategy is verified by using the actual parameters of a lithium battery energy storage power station in a region. The results show that compared with the SOC proportional distribution strategy and the single-layer power distribution strategy, the proposed strategy can achieve the maximum SOC balance while reducing the energy consumption of the power station, enhancing the two-way regulation ability of the power station, and improving the economy of the energy storage power station. ©2024 Chin.Soc.for Elec.Eng.

引用

页码：5185 / 5195

页数：10

共 23 条

[1] YE Lin, WANG Kaifeng, LAI Yening, Review of frequency characteristics analysis and battery energy storage frequency regulation control strategies in power system under low inertia level[J], Power System Technology, 47, 2, pp. 446-462, (2023)
[2] ZHAO Dongmei, XU Chenyu, TAO Ran, Review on flexible regulation of multiple distributed energy storage in distribution side of new power system[J], Proceedings of the CSEE, 43, 5, pp. 1776-1798, (2023)
[3] LI Jianlin, QU Shukang, MA Suliang, Research on frequency modulation control strategy of auxiliary power grid in battery energy storage system[J], Acta Energiae Solaris Sinica, 44, 3, pp. 326-335, (2023)
[4] LIU Yingpei, TIAN Shijie, LIANG Haiping, Control strategy of a battery energy storage system considering SOC in primary frequency regulation of power grid[J], Power System Protection and Control, 50, 13, pp. 107-118, (2022)
[5] CHOWDHURY S, SHAHEED M, SOZER Y．, State-of-charge balancing control for modular battery system with output DC bus regulation[J], IEEE Transactions on Transportation Electrification, 7, 4, pp. 2181-2193, (2021)
[6] Fang YAO, WANG Xiaopeng, CHEN Shenghua, Research on battery adaptive grouping equalization scheme based on Buck-Boost quasi-resonant circuit[J], Proceedings of the CSEE, 43, 2, pp. 714-726, (2023)
[7] MI Yang, CAI Hangyi, SONG Genxin, State-of-charge balancing research of distributed energy storage units with unmatched line impedance[J], Proceedings of the CSEE, 39, 15, pp. 4441-4450, (2019)
[8] ZENG Guohui, ZHU Xiangchen, ZENG Zhiwei, Energy storage unit state-of-charge automatic equalization control strategy with common LVDC bus voltage support function[J], Proceedings of the CSEE, 42, 19, pp. 7160-7169, (2022)
[9] Cuiping LI, ZHANG Shining, Junhui LI, Coordinated control strategy of multiple energy storage power stations supporting black-start based on dynamic allocation[J], Journal of Energy Storage, 31, (2020)
[10] DUAN Shuangming, YU Hang, LIU Cong, Power allocation strategy for battery energy storage system considering consistency of state of health and state of charge of energy storage units[J], Automation of Electric Power Systems, 47, 5, pp. 65-73, (2023)

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