弱惯性交流微电网群的分布式多目标协同控制方法  

Distributed Multi-Objective Cooperative Control Method for Weak-Inertia AC Microgrid Clusters

作　　者：何志毅 匡洪海[1] 于锡琪 常宇瑞 王凯 HE Zhi-yi;KUANG Hong-hai;YU Xi-qi;CHANG Yu-rui;WANG Kai(College of Electrical and Information Engineering,Hunan University of Technology,Zhuzhou 412007,China;Zhuzhou Power Supply Branch of State Grid Hunan Electric Power Co.,Ltd,Zhuzhou 412000,China)

机构地区：[1]湖南工业大学电气与信息工程学院,湖南株洲412007 [2]国网湖南省电力有限公司株洲供电分公司,湖南株洲412000

出　　处：《电工电气》2023年第6期7-13,共7页Electrotechnics Electric

基　　金：国家自然科学基金项目(51977072);湖北省重点实验室开放基金项目(2019KJX06)。

摘　　要：微电网群(MGC)集合了多个子网的电力资源,大量分布式电源(DG)的接入给系统的经济调度和功率均分带来巨大挑战,也削弱了系统的惯性。基于分布式控制,提出了一种微电网群的多目标协同控制,设计了三层协同控制架构。在设备层,利用虚拟同步发电机(VSG)模拟惯性;在子网层,利用功率一致性控制,增加了系统的阻尼,实现功率均分和振荡抑制;在网群层,基于等微增率准则,实现网群的经济优化和频率恢复。通过仿真实验,设计了冲击负荷接入切除、通信延时以及功率限制等算例,证实了所提控制算法的有效性。Microgrid Clusters(MGC)gather the power generation resources of multiple subnets,and the interconnection of a great number of Distributed Generators(DG)will bring large challenges to the economic dispatch and power sharing of the system and also weaken the system inertia.The paper,based on distributed control,proposes a multi-objective cooperative control for MGC and a three-layer cooperative control framework.On the equipment layer,the Virtual Synchronous Generator(VSG)is used to simulate inertia;on the subnet layer,power consistency control is adopted to increase the system damping,which realizes power sharing and oscillation suppression;on the MGC layer,economic optimization and frequency recovery of MGC are realized based on the equal incremental principle.Finally,numerical examples such as impact load access removal,communication delay and power limitation are designed through simulation experiments to verify the effectiveness of the proposed control algorithm.

关 键 词：微电网群 虚拟同步发电机 分布式控制 频率恢复 功率分配 

分 类 号：TM711[电气工程—电力系统及自动化]