交直流混合微电网关键技术及其示范工程

Key Technology of AC/DC Hybrid Microgrid and Its Demonstration Project

介绍了交直流混合微电网的拓扑结构及运行特点,阐述了交直流子网的协调控制策略,并根据交直流微电网的特点设计了超级电容-锂电池混合储能系统及适用于低压交直流混合微电网的双向交直流功率变换器控制策略。详解了太原理工大学风光储交直流混合微电网示范工程,依托此示范工程,可开展多种基于微电网的相关研究。此示范工程的建立可为未来交流混合微电网的改造与发展提供理论与实践依据。

This paper introduces the topology of the AC/DC microgrid and its operating char- acteristics. The coordination control strategies of AC and DC sub-microgrids are described. Ac- cording to the characteristics of the hybrid microgrid, the control strategies of the bidirectional AC/DC converter and the Super capacitor-Lithium battery based hybrid energy storage system in the low voltage hybrid AC/DC microgrid are designed. The demonstration project of the hybrid AC/DC microgrid based on wind and solar energy storage in Taiyuan university of Technology is introduced in detail. On the basis of the demonstration project, a variety of researches related to the microgrid can be carried out. The establishment of this demonstration project can provide the- oretical and practical basis for the future reconstruction and development of hybrid microgrid.