一种兼具配电网单相接地故障调控的多端口能量路由器  

A multi‑port energy router for distribution networks with single‑phase grounding fault regulation

作　　者：朱飞跃 粟时平[1] 吴陈雨 李雄 ZHU Feiyue;SU Shiping;WU Chenyu;LI Xiong(College of Electrical&Information Engineering,Changsha University of Science&Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学电气与信息工程学院,湖南长沙410114

出　　处：《电力科学与技术学报》2024年第5期235-246,共12页Journal of Electric Power Science And Technology

基　　金：国家自然科学基金(51708194,51507014)。

摘　　要：能量路由器是能源互联网领域的核心设备,其电路拓扑能够实现新能源、储能、各类负荷的统一分配。目前,能量路由器缺乏配电网故障恢复能力。该文提出一种实现故障调控与新能源消纳的多端口能量路由器(multi‐port energy router,MP‐ER)。首先,介绍MP‐ER拓扑及原理,根据MP‐ER整体结构,提出以直流母线电压为主信号,各个端口分散控制的控制策略;其次,通过直流母线电压及配电网零序电压情况,将MP‐ER工作模式分为正常模式和故障柔性消弧两种模式,在所提的控制策略下,实现各模态内的稳定、高效运行;最后,针对连接的微网、配电网系统,利用MATLAB数值软件,对该模型进行仿真并验证该文提出的拓扑结构功能的合理性。该研究为能量路由器的研究提出一种新的拓扑结构和模型。The energy router is a core device in the field of the energy internet,and its circuit topology enables unified distribution of new energy sources,energy storage,and various loads.Currently,energy routers lack the capability to restore power distribution networks after faults.A multi-port energy router(MP-ER)is proposed in this paper,which achieves fault regulation and new energy accommodation.Firstly,the topology and principles of the MP-ER are introduced,and based on its overall structure,a control strategy is proposed that utilizes the DC bus voltage as the primary signal and implements decentralized control for each port.Secondly,by considering the DC bus voltage and the zero-sequence voltage of the distribution network,the operating modes of the MP-ER are divided into normal mode and fault-tolerant flexible arc suppression mode.Under the proposed control strategy,stable and efficient operation is achieved within each mode.Finally,for the connected microgrid and distribution network systems,MATLAB numerical software is used to simulate the model and verify the rationality of the proposed topology and its functions.This research introduces a new topology and model for the study of energy routers.

关 键 词：能源互联网 能量路由器 故障恢复 分散控制 柔性消弧 

分 类 号：TM46[电气工程—电器]