考虑SOC自均衡的光储独立微电网协调控制

doi:10.19595/j.cnki.1000-6753.tces.L80305

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摘要针对多分布式电源组成的混合微电网,考虑孤岛模式下光伏与储能系统协调运行,对其能量管理控制策略展开研究。首先,考虑储能系统荷电状态SOC平衡,提出了一种改进的动态下垂控制策略,以提高不同储能系统间输出功率的均衡度,延长储能单元使用寿命。其次,针对光伏输出功率波动以及SOC状态变化,设计了分布式电源的多模式切换控制算法,根据场景运行在不同的控制模式,实现分布式微电网能量管理目标。通过搭建Matlab/Simulink仿真模型,储能系统能够根据SOC状态快速分配功率,同时协调光伏系统维持微电网稳定运行,验证了所提控制策略的可行性和有效性。

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	张继元
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关键词 ：微电网, 分布式电源, SOC平衡, 下垂控制, 协调控制

Abstract：For the hybrid microgrid composed of multiple distributed generations, considering the coordinated control of photovoltaic and energy storage system in islanded mode, the energy management strategy is studied. Firstly, an improved dynamic droop control method considering SOC balancing is proposed, to enhance the power balancing between different energy storage systems and prolong the service life of the battery. Secondly, since the photovoltaic output power fluctuation and SOC states variation, a multi-mode switching control algorithm for distributed power supplies is designed. Depending on the scenarios, it operates in different control modes to achieve energy management objectives of the decentralized microgrid. By constructing the Matlab/Simulink model, the energy storage system can quickly allocate the power according to the SOC state, and coordinate the PV system to maintain the stable operation of the microgrid, thus verifying the feasibility and effectiveness of the proposed control strategy.

Key words： Microgrid distributed generations SOC balancing droop control coordinated control

收稿日期: 2018-07-01 出版日期: 2019-02-15

PACS:

TM615

基金资助:国家重点研发计划专项（2017YFB0903202）和广州市科技计划项目产学研协同创新重大专项（201604016032）资助

通讯作者: 舒杰男,1969年生,研究员,博士生导师,研究方向为微电网及智能电网。E-mail: shujie@ms.giec.ac.cn

作者简介: 张继元男,1990年生,博士研究生,助理研究员,研究方向为分布式发电与微电网控制技术。E-mail: zhangjy@ms.giec.ac.cn

引用本文:

张继元, 舒杰, 宁佳, 王浩. 考虑SOC自均衡的光储独立微电网协调控制[J]. 电工技术学报, 2018, 33(zk2): 527-537. Zhang Jiyuan, Shu Jie, Ning Jia, Wang Hao. Coordinated Control for PV/Storage Hybrid Islanded Microgrid Considering SOC Balancing. Transactions of China Electrotechnical Society, 2018, 33(zk2): 527-537.

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