改进的孤岛微电网主从控制策略  

Improved Master-slave Control Strategy for Islanded Micro-grid

作　　者：陈涛 李哲 赖向平 周婧婧 黎博 陈飞雄 CHEN Tao;LI Zhe;LAI Xiangping;ZHOU Jingjing;LI Bo;CHEN Feixiong(Electric Power Research Institute,State Grid Chongqing Electric Power Company,Chongqing 401123,China;State Grid Chongqing Electric Power Company,Chongqing 400014,China;State Key Laboratory of Power Transmission Equipment&System Security and New Technology(Chongqing University),Chongqing 400044,China;Department of Electrical Engineering,The Hong Kong Polytechnic University,Hong Kong,China)

机构地区：[1]国网重庆市电力公司电力科学研究院,重庆401123 [2]国网重庆电力公司,重庆400014 [3]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆400044 [4]香港理工大学电机工程系,香港

出　　处：《电力系统及其自动化学报》2019年第11期45-52,共8页Proceedings of the CSU-EPSA

基　　金：国家自然科学基金资助项目(61105125,51177177);国家“111”计划资助项目(B08036);国家电网公司科技资助项目(5220001600V6)

摘　　要：采用主-从控制的微电网,其孤岛运行对“主微电源”的容量要求较高。为此,提出了一种改进型主-从控制策略。将“主微电源”的输出考虑为负载需求,即“主微电源”在瞬时补充系统功率缺额后,通过通信网络将“主微电源”的输出信息传递给“从微电源”,“从微电源”按照与各自容量成正比的输出比例分担“主微电源”的输出功率,间接减小“主微电源”的输出功率,从而减小系统对“主微电源”的依赖。仿真结果表明,在高渗透率的微电网中,系统能保持电压频率稳定,“主微电源”的输出被“从微电源”分担,且“从微电源”的功率与其容量成正比。In an islanded micro-grid operating in master-slave control mode,the requirement for the master microsource is higher.To solve this problem,an improved master-slave control strategy is proposed,in which the output from the master micro-source is considered as load demand.After the system’s power unbalance is instantaneously compen?sated by the master micro-source,the output information of the master micro-source is sent to the slave micro-sources by a communication network.Accordingly,this output power is shared by the slave micro-sources according to ratios that are proportional to their own capacities,thus reducing the output power from the master micro-source indirectly.As a result,the system’s dependence on the master micro-source is reduced.Simulation results show that the system can maintain the voltage and frequency stably in a micro-grid with high penetrations of renewable energy.Moreover,the out?put from the master micro-source is shared by the slave micro-sources,whose outputs are proportional to their own ca?pacities.

关 键 词：孤岛微电网 主-从控制 微电源 能量管理 

分 类 号：TM7[电气工程—电力系统及自动化]