摘要
针对传统孤岛运行微电网存在运行不平稳的问题,提出基于先导节点选取下优化下垂控制的孤岛运行微电网负荷功率分配方法。首先通过导纳矩阵对电源端的电阻进行控制,给出各端口的电流及电压,得到先导节点选取矩阵相关的适应度函数,确定孤岛微电网先导节点。在此基础上,对直流电压与输出功率均值和传统下垂控制方法导致的电压跌落进行补偿,优化负荷功率的分配精度。实验结果表明,该方法可使母线电压恢复至平稳运行状态。
Aiming at the problem of unstable operation of traditional island operation microgrid,a load power distribution method of island operation microgrid based on optimal droop control under pilot node selection is proposed.Firstly,the resistance of the power supply terminal is controlled through the admittance matrix,the current and voltage of each port are given,the fitness function related to the selection matrix of the pilot node is obtained,and the pilot node of the isolated microgrid is determined.On this basis,aiming at the defects of the traditional droop control method,the average value of DC voltage and output power and the voltage drop caused by the traditional droop control method are compensated to optimize the distribution accuracy of load power,Finally,droop control ensures the optimization of load power distribution of isolated island operation microgrid.The experimental results show that this method can restore the bus voltage to a stable operation state.
作者
毛荀
占勇
刘敏
郭力
MAO Xun;ZHAN Yong;LIU Min;GUO Li(State Grid Anhui Electric Power Research Institute,Hefei 230000,China;State Grid Simulation Center,China Electric Power Research Institute,Beijing 100192,China)
出处
《电源学报》
CSCD
北大核心
2023年第1期126-132,共7页
Journal of Power Supply
基金
国家电网公司科技项目:“源-荷-储”设备外特性电磁暂态建模及仿真技术研究(52150519002H)
国家重点研发计划资助项目:分布式可再生能源发电集群并网消纳关键技术及示范(2016YFB0900400)。
关键词
先导节点
孤岛运行
微电网
相关适应度函数
下垂控制
负荷功率分配
补偿母线电压
pilot node
islanding operation
microgrid
correlation fitness function
droop control
load power distribution
compensation for bus voltage
