低压微型直流微电网的协调控制策略

Coordinated control strategy for low voltage miniature DC microgrid

直流微电网具有结构简单、运行可靠和能耗较小等优点,将成为偏远山村和未来家庭的主要供电结构。以由太阳电池阵列、蓄电池组和可控负载等组成的低压微型光伏直流微电网系统为研究对象,针对系统并网和孤岛运行模式,采用了主从并联和母线电压下垂相结合的控制模式,实现了直流微电网的能量协调控制。最后,基于Matlab/Simulink仿真平台和光伏直流微电网实验装置,对系统进行了仿真研究,仿真验证了系统能量协调控制策略的合理性和正确性。

DC microgrid has advantages of simple structure, reliable operation and low power consumption and could become the main power supply structure for remote mountain villages and future family. The low voltage miniature DC photovoltaic microgrid system with components of solar arrays, batteries and controllable load was studied, and for the island against the system and network operation mode, the master-slave parallel and bus voltage droop control mode were used to achieve the DC micro-grid energy coordination and control. Based on Mattab/Simulink simulation platform and photovoltaic DC micro-grid experimental device, the system was simulated and experimental tested, and the results verify the system energy coordinated control strategy is correct and reasonable.