| 引用本文: | 赵贺,井天军,熊雄.分散自律架构下微电网功率管理与协调控制[J].电力自动化设备,2019,39(6): |
| ZHAO He,JING Tianjun,XIONG Xiong.Power management and coordinated control of microgrid under decentralized and autonomous architecture[J].Electric Power Automation Equipment,2019,39(6): |
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| 摘要: |
| 以包含光储单元的微电网为研究对象，首先总结分析了微电网在并网和孤岛模式下光储系统中光伏与储能的逆变器控制策略；然后提出了微电网在并网及孤岛模式下的功率管理策略，在并网模式下通过调节储能来维持公共连接点(PCC)处交换功率的恒定，在孤岛模式下通过分析微电网的多分段P/f特性曲线，针对不同运行场景基于本地信息对网内功率实施分散自律管理及控制。针对储能充电的场景，提出一种基于储能充电功率修正的管理控制策略，该策略通过改变光伏DC端口的参考电压使其偏离最大功率运行点，从而达到减发电的目的以满足储能荷电状态及最大充电功率的限制。最后基于仿真和实验对所提控制策略进行验证。 |
| 关键词: 微电网 分散自律 功率管理 协调控制 光储系统 多分段P/f特性曲线 |
| DOI：10.16081/j.issn.1006-6047.2019.06.012 |
| 分类号:TM727 |
| 基金项目:国家重点研发计划项目(2016YFB0900503) |
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| Power management and coordinated control of microgrid under decentralized and autonomous architecture |
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ZHAO He1, JING Tianjun2, XIONG Xiong3
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1.Electric Power Research Institute of State Grid Beijing Electric Power Company, Beijing 100075, China;2.College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China;3.China Electric Power Research Institute, Beijing 100192, China
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| Abstract: |
| The microgrid with photovoltaic-energy storage units is taken as the research object. Firstly, the control strategies of photovoltaic inverter and energy storage inverter in the photovoltaic-energy storage system are summarized and analyzed, when the microgrid operates in the grid-connected and islanding modes. Then, the power ma-nagement strategies of microgrid under the grid-connected and islanding modes are proposed. When the microgrid operates in the grid-connected mode, the exchange power at the PCC(Point of Common Coupling) is maintained constant by regulating the energy storage; when the microgrid operates in the islanding mode, the multi-segment P/f characteristic curves of microgrid are analyzed, and the decentralized and autonomous power management and control are implemented for different operation scenarios based on local information. Aiming at the charging scenario of energy storage, a management control strategy based on charging power correction of energy storage is proposed, which reduces the power generation to meet the limitation of SOC(State of Charge) and maximum charging power of energy storage by changing the reference voltage of the photovoltaic DC port to make it deviate from the maximum power operating point. Finally, the proposed control strategy is verified by simulation and experiment. |
| Key words: microgrid decentralized and autonomous power management coordinated control PV-energy storage system multi-segment P/f characteristic curves |
