交直流混合微电网运行控制技术

微电网为分布式能源的充分利用和发展提供了很好的平台，相比单一的直流（direct current，DC）微电网、交流（alternating current，AC）微电网，交直流（alterating and direct current，AC/DC）混合微电网兼具两者的优点，其运行控制技术受到广泛的关注。首先阐述了交流微电网、直流微电网、交直流混合微电网的典型结构与主要特征；并重点基于交直流混合微电网分层控制理念，从设备控制层、协调控制层以及能量管理层三方面的研究现状进行综述；最后结合能源互联网和智能电网的发展，探讨了交直流混合微电网的未来发展趋势。

AC/DC Hybrid Microgrid Operation Control Technology

Microgrids provide a good platform for the full utilization and development of distributed energy. Compared with single direct current (DC) microgrid and alternating current (AC) microgrid, alternating and direct current (AC/DC) hybrid microgrid combines the advantages of both, and its operation and control technology has received wide attention. Firstly, the typical structure and main features of AC microgrid, DC microgrid and AC/DC hybrid microgrid are described; and the current research status of the equipment control layer, coordination control layer and energy management layer is reviewed based on the concept of hierarchical control of AC/DC hybrid microgrid; finally, the future development trend of AC/DC hybrid microgrid is discussed in the light of the development of energy internet and smart grid.