引用本文:户艳琴,周仁友,黄天翔,等.基于改进下垂控制的并网级联型储能系统SOC均衡策略[J].电力系统保护与控制,2021,49(22):120-129.
HU Yanqin,ZHOU Renyou,HUANG Tianxiang,et al.SOC balancing strategy of a grid-connected cascaded-type energy storage system based on advanced droop control[J].Power System Protection and Control,2021,49(22):120-129
【打印本页】   【下载PDF全文】   【查看/发表评论】  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被：浏览 4983次   下载 1822次 本文二维码信息
码上扫一扫！
分享到： 微信 更多
字体:加大+|默认|缩小-
基于改进下垂控制的并网级联型储能系统SOC均衡策略
户艳琴1，周仁友2，黄天翔1，张 延1，宁 涛1，于晶荣2
(1.国网江西综合能源服务有限公司，江西 南昌 330096；2.中南大学自动化学院，湖南 长沙 410083)
摘要:
并网级联型储能系统；P下垂控制；电网同步；有功功率平衡；SOC均衡
关键词:  并网级联型储能系统  P下垂控制  电网同步  有功功率平衡  SOC均衡
DOI：DOI: 10.19783/j.cnki.pspc.210164
分类号:
基金项目:湖南省自然科学基金项目资助(2017JJ2348)；国网江西省电力有限公司科技项目“开展台区综合能效管理和提升的应用技术研究”(521855190001)
SOC balancing strategy of a grid-connected cascaded-type energy storage system based on advanced droop control
HU Yanqin1, ZHOU Renyou2, HUANG Tianxiang1, ZHANG Yan1, NING Tao1, YU Jingrong2
(1. State Grid Jiangxi Integrated Energy Service Co., Ltd., Nanchang 330096, China; 2. College of Automation, Central South University, Changsha 410083, China)
Abstract:
There are imbalance problems in the State of Charge (SOC) of batteries in grid-connected cascaded-type battery energy storage systems. Thus an improved droop control considering SOC balancing strategy is proposed. Based on traditional droop control, this method introduces a distribution correction term by considering SOC real-time estimation information of each battery pack. Then the reference active power and reference voltage amplitude can be reasonably distributed according to the SOC information, and the SOC balancing of each module is achieved without affecting the normal power output as well as keeping synchronization with the grid. In this way, the SOC balancing speed can be adjusted by changing the correction coefficient. In addition, stability analysis of the system based on singular perturbation theory is carried out, and the design basis for control parameters is given. The simulation results under different conditions verify the correctness and validity of the proposed control strategy and the theoretical analysis. This work is supported by the Natural Science Foundation of Hunan Province (No. 2017JJ2348).
Key words:  grid-connected cascaded-type battery energy storage system  P droop control  grid synchronization  active power balancing  SOC balancing
  • 1
X关闭
  • 1
X关闭