基于快速一致性的微电网分布式控制策略  

Microgrid Distribution Control Strategy Based on Fast Consensus Algorithm

作　　者：张雅琴[1] 魏文军[1,2] ZHANG Ya-qin;WEI Wen-jun(School of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Key Laboratoryof Opto-Technology and Intelligent Control,Ministry of Education,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学自动化与电气工程学院,兰州730070 [2]兰州交通大学光电技术与智能控制教育部重点实验室,兰州730070

出　　处：《兰州交通大学学报》2020年第1期67-72,共6页Journal of Lanzhou Jiaotong University

摘　　要：在微电网传统下垂控制中,针对系统负荷变化时所引起的频率波动及功率分配不合理的问题,提出了一种基于快速一致性的分布式控制策略.该策略以下垂控制为基础,增加了二次频率控制层和三次功率控制层.采用多智能体快速一致性算法,收敛得到平均功率,计算出所需的全局变量,补偿频率偏差,使各分布式电源按备用功率比例分担系统增加的负荷,并修正下垂系数,恢复系统频率、电压稳定以及进行功率的最优分配.最后,通过Matlab/Simulink仿真软件搭建了4节点微电网模型,验证并分析了该控制策略的有效性,使收敛时间缩短了近40%,提高了系统的响应时间.In traditional droop control of microgrid,a distributed control strategy based on fast consensus algorithm is proposed in this paper to solve the problems of frequency fluctuation and unreasonable power distribution caused by system load variation.Based on the traditional droop control,a distributed control layer including second frequency control and third power control is added.This strategy uses the average power obtained by the convergence of the fast consistency algorithm to calculate the global variables needed,so as to compensate the frequency deviation,then to make the distributed generators share the increased loads of the system according to the proportion of reserve power,and correct the droop coefficient to restore the system's frequency stability and optimally perform the power distribution.Finally,a 4-node microgrid model is built by Matlab/Simulink simulation software to verify and analyze the effectiveness of the control strategy,which reduces the convergence time by nearly 40%and the response time of the system is improved.

关 键 词：微电网 分布式电源 下垂控制 多智能体 一致性 

分 类 号：TM711[电气工程—电力系统及自动化]