基于下垂控制的孤岛混合微电网群功率协调控制策略  

Power Coordination Control Strategy for Islanded Hybrid Microgrid Group Based on Droop Control

作　　者：智明 杨飞 符瑞 邹杰 陈笑 夏磊 徐迅 ZHI Ming;YANG Fei;FU Rui;ZOU Jie;CHEN Xiao;XIA Lei;XU Xun(State Grid Taizhou Power Supply Company,Taizhou 225300,China)

机构地区：[1]国网江苏省电力有限公司泰州供电公司,江苏泰州225300

出　　处：《湖南电力》2025年第1期130-135,共6页Hunan Electric Power

基　　金：国网江苏省电力有限公司科技项目(J2023104)。

摘　　要：将多个交直流混合微电网进行互联,构成混合微电网群是目前负荷供电的常用方式,发挥其中子微网的自治特性、实现子微网间功率互动支撑是交直流混合微电网群功率管理的关键问题之一。为此,针对孤岛运行的交直流混合微电网群,提出一种由子网功率自治控制层、相邻子网间功率互动支撑层及混合微电网群功率平衡层组成的功率管理策略。通过三层之间的协调控制可以有效提高孤岛交直流混合微电网群的供电可靠性和供电质量,并降低微电网群功率损耗。最后,通过搭建实验平台对所提控制策略进行验证,实验结果表明所提策略在通信正常和通信故障下具有较好的鲁棒性。Interconnecting multiple AC/DC hybrid microgrids to form a hybrid microgrid cluster is a common way to supply loads,and how to utilize the autonomy of the sub-microgrids and realize the interactive power support between sub-microgrids is one of the key issues in AC/DC hybrid microgrid cluster power management.For this reason,this paper proposes a power management strategy consisting of three layers:power autonomy control layer of subgrids,power interaction support layer between neighboring subgrids,and power balance layer of the hybrid microgrid cluster for the AC/DC hybrid microgrid cluster with islanded operation.The coordinated control among the three layers can effectively improve the power supply reliability and quality of the isolated AC/DC hybrid microgrid cluster and reduce the power loss of the microgrid cluster.Finally,the proposed control strategy is verified by building an experimental platform,and the experimental results show that the proposed strategy has better robustness under normal communication and communication failure.

关 键 词：交直流混合微电网群 功率自治 功率互动支撑 功率平衡 

分 类 号：TM727[电气工程—电力系统及自动化]