交直流多端口户用型能量路由器协调控制策略

Coordinated control strategy of AC/DC multi-port household energy router

能量路由器是家庭区域能源网与电网之间能量接口的重要组成部分,本文针对一种交直流户用型能量路由器结构,研究设计实现分布式发电、储能系统、电网与负荷之间能量平衡的协调控制策略。为延长由蓄电池和超级电容组成的混合储能系统中蓄电池的使用寿命,设计模糊控制算法电源管理策略;采用改进的下垂控制策略,实现户用型能量路由器并网时的平滑切换,提高系统的鲁棒性。在Matlab/Simulink平台上搭建户用型能量路由器仿真模型进行分析,仿真结果表明,本文所研究控制策略在保持系统稳定性的同时,能够有效抑制可再生能源输出波动及负载变化带来的影响。

Energy router is an important part of the energy interface between home regional energy network and power grid.Aiming at an AC/DC household energy router structure,this paper studies and designs the energy balance coordination control strategy between distributed generation,energy storage system,power grid and load.To extend the battery life in the hybrid energy storage system composed of batteries and supercapacitors,fuzzy control algorithms and power management strategies are designed.The improved droop control strategy is adopted to realize the smooth switching of household energy router when connected to the grid,and improve the robustness of the system.The home energy router simulation model is established and analyzed on the Matlab/Simulink platform.The simulation results show that the control strategy studied in this paper can effectively restrain the influence of renewable energy output fluctuations and load changes while maintaining the stability of the system.