摘要
针对当前光储微网存在的光伏发电容量利用率不高、与外接电网之间的能量交互质量低下等缺陷,设计一种光储微网协同控制系统。该系统以电力物联网为基础获取、传输微网运行参数及指令,采用扰动观察法进行光伏阵列的最大功率点跟踪(MPPT),以提高光伏发电效率;通过蓄电池组进行光伏电能的柔性存储,并控制逆变器进行自适应并离网变流,使光储微网根据系统运行状态自动运行于并网PQ模式或离网VF模式。在MATLAB中搭建仿真模型并进行仿真。结果表明:所设计的光储微网协同控制系统不仅能使光伏阵列以最大功率输出,而且可完成光伏、蓄电池组、本地负载、外接电网之间高质量的能量交互,保证微网系统供电质量满足电力标准要求,达到了预定的协同控制要求,为新能源微网控制提供了参考。
Aiming at the shortcomings of the current optical storage microgrid,such as low utilization rate of photovoltaic power generation capacity and low quality of energy interaction with external power grids,a collaborative control system of optical storage microgrid is designed.In the system,microgrid operating parameters and instructions can be acquired and transmited based on the power internet of things,by using the disturbance observation method,the maximum power point tracking(MPPT)of the photovoltaic array is carried out to improve the efficiency of photovoltaic power generation;the flexible storage of photovoltaic power is conducted through the battery pack,and the inverter to conduct adaptive and off grid conversion is controlled,so that the optical storage microgrid can automatically operate in the grid-connected PQ mode or off-grid VF mode according to the system operation status.The simulation model is built in MATLAB,and the simulation is carried out.The results show that by using the designed optical storage microgrid collaborative control system,not only the power output of the photovoltaic array can be maximized,but also the high-quality energy interaction between photovoltaic,battery pack,local load and external power grid can be completed to ensure that the power supply quality of the microgrid system meet the requirements of power standards,and achieve the scheduled collaborative control requirements.It provides reference method for new energy microgrid control.
作者
方胜利
朱晓亮
马春艳
侯贸军
Fang Shengli;Zhu Xiaoliang;Ma Chunyan;Hou Maojun(College of Electrical and Information Engineering,Hubei University of Automotive Technology,Shiyan,Hubei 442002,China;Shiyan Juneng Power Design Co.,Ltd.,Shiyan,Hubei 442000,China)
出处
《机电工程技术》
2023年第6期186-191,共6页
Mechanical & Electrical Engineering Technology
基金
2022年度十堰市市级引导性科研项目(22Y04)
2023年中国物流学会、中国物流与采购联合会研究课题计划项目(2023CSLKT3-382)
湖北省教育厅科学技术研究中青年人才基金(Q20171802)。
关键词
光储微网
电力物联网
最大功率点跟踪
柔性储能
并离网变流
协同控制
optical storage microgrid
power internet of things
maximum power point tracking
flexible energy storage
grid-connected and off-grid inverter
cooperative control
