A coordinated control method for DC microgrid based on energy storage and SOC classification

KANG Jiayu; CHEN Xiner; SHI Chenyu

doi:10.19666/j.rlfd.202110208

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A coordinated control method for DC microgrid based on energy storage and SOC classification

更新时间：2025-09-28

- A coordinated control method for DC microgrid based on energy storage and SOC classification
- Thermal Power Generation Vol. 51, Issue 5, Pages: 127-135(2022)
- 作者机构：
  
  陕西科技大学电气与控制工程学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202110208
  CLC： TM721.1
- Published：2022
- 稿件说明：
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KANG Jiayu, CHEN Xiner, SHI Chenyu. A coordinated control method for DC microgrid based on energy storage and SOC classification[J]. Thermal power generation, 2022, 51(5): 127-135.
DOI：

KANG Jiayu, CHEN Xiner, SHI Chenyu. A coordinated control method for DC microgrid based on energy storage and SOC classification[J]. Thermal power generation, 2022, 51(5): 127-135. DOI： 10.19666/j.rlfd.202110208.

摘要

为延长多储能单元运行寿命，提升微电网调度灵活性，提出了一种基于荷电状态（SOC分级的直流微电网协调控制方法。在传统功率分层的基础上，根据储能单元的实时SOC值进行优先级划分，通过比较微电网扰动功率与特定优先级最大平抑功率的关系使相应优先级的储能单元分级投入运行。在此基础上，设计带电压前馈补偿环节的改进e指数下垂控制，在保证直流母线电压质量的同时使储能单元的SOC逐渐收敛。最后，基于MATLAB/Simulink平台搭建了模型。仿真结果表明，该控制方法能有效避免储能单元过度充放电，减少储能单元的充放电时长与次数，提升微电网的调度灵活性与运行经济性。

Abstract

In order to prolong the operation life of multiple energy storage units and improve the flexibility of microgrid scheduling

a coordinated control method of DC micro-grid based on state of charge(SOC) classification is proposed. On the basis of conventional power stratification

the priority of energy storage units is divided according to the real-time SOC value. By comparing the relationship between the disturbance power of micro-grid and the maximum suppression capacity of specific priority

the energy storage unit with corresponding priority is put into operation in different stages. On this basis

the improved e-exponential droop control with voltage feedforward compensation is designed to ensure the quality of bus voltage and make the SOC of the energy storage unit converge gradually. Finally

the model is built based on MATLAB/Simulink platform. The simulation results show that

this control method can avoid excessive charging and discharging of some energy storage units

reduce the charging and discharging time and times of energy storage units

and effectively improve the scheduling flexibility and operation economy of the micro-grid.

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