适用于直流分布式储能系统的控制策略

doi:10.12028/j.issn.2095-4239.2019.0017

储能科学与技术 ›› 2019, Vol. 8 ›› Issue (4): 654-658.doi: 10.12028/j.issn.2095-4239.2019.0017

• 微电网与分布式储能技术专刊 • 上一篇下一篇

适用于直流分布式储能系统的控制策略

师长立^1,2, 韦统振^1,2, 霍群海^1,2, 何俊强^1,2, 张桐硕¹

1 中国科学院电工研究所, 北京 100190;
2 中国科学院大学, 北京 100190

收稿日期:2019-02-25 修回日期:2019-04-09 出版日期:2019-07-01 发布日期:2019-07-01
通讯作者: 师长立(1984-),男,博士研究生,工程师,主要研究方向为分布式储能系统、直流配电网关键技术,E-mail:shichangli@mail.iee.ac.cn。
作者简介:师长立(1984-),男,博士研究生,工程师,主要研究方向为分布式储能系统、直流配电网关键技术,E-mail:shichangli@mail.iee.ac.cn。
基金资助:
国家重点研发计划（2016YFB0900400），中国科学院战略性先导科技专项（A类）（XDA21050302）。

A control strategy for the distributed energy storage system for a DC distribution power network

SHI Changli^1,2, WEI Tongzheng^1,2, HUO Qunhai^1,2, HE Junqiang^1,2, ZHANG Tongshuo¹

1 Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2 University of Chinese Academy of Sciences, Beijing 100190, China

Received:2019-02-25 Revised:2019-04-09 Online:2019-07-01 Published:2019-07-01

摘要/Abstract

摘要： 直流配电系统中分布式储能系统采用电压型下垂控制策略时，分布式储能各个单元之间耦合程度很高，易受线路阻抗的影响，均流效果较差。针对电压型下垂控制策略的不足，本工作提出一种电流型下垂控制策略，分析了关键控制参数的计算方法，实现了分布式储能系统各单元之间线路阻抗解耦。最后，基于理论分析，以储能变换器采用Buck/Boost双向变换器为例，搭建仿真和实验平台，对所提控制策略进行实验验证，实验结果表明，新型电流型下垂控制策略相较于传统电压下垂控制算法具有更好的功率分配效果。

关键词: 直流配电系统, 分布式储能系统, 线路阻抗, 阻抗解耦, 电流下垂控制策略

Abstract: When the voltage type droop control strategy is adopted in a distributed energy storage system for a DC distribution network, the degree of coupling between all the distributed energy storage units becomes very high, which is easily affected by the impedance of the line, and hence poor effect of current sharing. This paper proposes a current type droop control strategy, analyses the calculation method of key control parameters, and the decoupling of the line impedance between all the units of the distributed energy storage system. The experimental results verify the effectiveness of the proposed control strategy.

Key words: distributed energy storage system, line impedance, impedance decoupling, current droop control strategy

中图分类号:

TQ028.8

师长立, 韦统振, 霍群海, 何俊强, 张桐硕. 适用于直流分布式储能系统的控制策略[J]. 储能科学与技术, 2019, 8(4): 654-658.

SHI Changli, WEI Tongzheng, HUO Qunhai, HE Junqiang, ZHANG Tongshuo. A control strategy for the distributed energy storage system for a DC distribution power network[J]. Energy Storage Science and Technology, 2019, 8(4): 654-658.

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适用于直流分布式储能系统的控制策略

A control strategy for the distributed energy storage system for a DC distribution power network

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