摘要
微电网中分布式能源出力的随机性、波动性和负荷的时变性,易引发电网功率不匹配,影响微电网的自治运行和经济性。基于此,提出一种计及自平衡率和线路损耗的交直流混合台区互联系统自治运行策略。首先,根据微电网自平衡率将交直流混合台区互联系统归类为6种运行模式,在此基础上设计了交直流混合台区互联系统的功率分配及互联接口装置的功率传输原则。其次,提出一种互联接口装置自适应下垂控制,即以微电网自平衡率和配电网线路损耗比为输入参数,通过模糊逻辑控制器生成有功功率补偿量,实现各端口功率的自适应调整。最后,利用MATLAB/Simulink仿真平台搭建仿真模型,验证了所提策略的可行性。
The randomness,instability of distributed energy output and the variation of load in a microgrid can lead to power mismatch in the grid,affecting the autonomous operation and economic benefits of the microgrid.Based on this,an autonomous operation strategy for the AC/DC hybrid distribution station area interconnection system that takes into account the self-balancing rate and line loss is proposed.Firstly,the AC/DC hybrid distribution station area interconnection system is classified into six operation modes based on the self-balancing rate of the microgrid.On this basis,the power distribution of the AC/DC hybrid distribution station area interconnection system and the power transmission principle of the interconnection interface device are designed.Secondly,an adaptive droop control for interconnection interface devices is proposed.That is,taking the self-balancing rate of the microgrid and the line loss ratio of the distribution network as input parameters,the active power compensation amount is generated through the fuzzy logic controller to achieve the adaptive adjustment of the power at each port.Finally,a simulation model was built using the MATLAB/Simulink simulation platform to verify the feasibility of the proposed strategy.
作者
孙丽敬
徐旖旎
王耀萱
洪祎
肖飞
季宇
吴鸣
陈立阳
SUN Lijing;XU Yini;WANG Yaoxuan;HONG Yi;XIAO Fei;JI Yu;WU Ming;CHEN Liyang(State Grid Shanghai Energy Interconnection Research Institute Co.,Ltd.,Shanghai 201213,China;State Grid Shanghai Municipal Electric Power Company Changxing Power Supply Company,Shanghai 201913,China;School of Transportation and Electrical Engineering,Hunan University of Technology,Zhuzhou 412007,China)
出处
《供用电》
北大核心
2026年第2期73-83,共11页
Distribution & Utilization
基金
国家电网有限公司总部科技项目(5400-202317826A-4-1-KJ)。
关键词
微电网
自平衡率
线路损耗比
运行模式划分
自治运行
microgrid
self-balancing rate
line loss ratio
operation mode division
autonomous operation
