基于自适应下垂控制的联网型直流微网母线电压控制  

Grid-connected DC Microgrid Bus Voltage Control Based on Adaptive Droop Control

作　　者：丁雨 于艾清 DING Yu;YU Aiqing(College of Power Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力大学电气工程学院,上海200090

出　　处：《电气传动》2021年第15期39-44,共6页Electric Drive

基　　金：上海绿色能源并网工程技术研究中心资助项目(13DZ2251900)。

摘　　要：考虑到通讯和电力电子技术的发展,针对以能量路由器作为与传统电网连接设备的联网型直流微电网,提出一种基于自适应下垂控制方法的直流母线电压控制策略。该策略根据直流母线电压波动范围切换不同单元对电压进行控制,同时采用自适应下垂控制协调本地储能单元,根据各自荷电状态和最大输出能力自动分配负荷功率。该控制策略无需通信,满足各单元即插即用的要求,在不同模式下均有单元参与母线电压控制,保证了直流系统的稳定性。在Matlab/Simulink仿真平台上搭建包含能量路由器的直流微电网系统,对控制方法进行仿真,结果验证了该分布式策略的有效性。Considering the development of communication and power electronics technology,a DC bus voltage control strategy based on adaptive droop control method for grid-connected DC microgrid with energy router connecting to traditional power grid was proposed.Different units were switched to control the voltage according to the DC bus voltage fluctuation range.At the same time,the adaptive droop control was used to coordinate the local energy storage units to automatically distribute the load power according to the respective states of charge and the maximum output capacities.The control strategy does not need communication to meet the plug and play requirements of each unit.Different units are involved in different modes in the method,which ensures the stability of the system.A DC microgrid with energy router was built on the Matlab/Simulink to simulate the control method.The results verify the effectiveness of the distributed strategy.

关 键 词：直流微电网 能量路由器 直流母线电压 分层控制 即插即用 

分 类 号：TM732[电气工程—电力系统及自动化]