中文摘要：

研究设计了一种通用的分布式发电单元与微网互联接口单元，将分布式电源与微网互联接口分成功率接口和信息接口2个部分，分析并阐述了这2个接口的作用与设计方法，提出了即插即用的分布式电源与微网互联接口模型。针对微网运行需求，分析了互联模型的5种运行模式，并通过设计的互联接口单元对运行模式及其切换进行了实际测试。结果表明所设计的模块化互联接口模型具有可扩展、技术独立的特点，能灵活地满足不同分布式发电单元与微网互联的要求，很大程度上提高了分布式电源与微网互联的标准性、灵活性。

英文摘要：

This paper studies and designs a common interconnection interface between distributed generation and microgrid. The interface is divided into two parts： information interface and power interface. The functions and design methods of the two parts are analyzed. The plug and play interconnection interface between distributed generation and microgrid is presented. Based on the requirements for microgrid operation, five operational modes of the interconnection models are studied. The designed interconnection unit is used to test the different operational modes and switching from one mode to another. These tests also show that the modular design of the interconneetion interface model is scalable, technology independent and flexible to meet the needs of interconnection between different distributed generation units and microgrid. This work is supported by National Natural Science Foundation of China （No. 50777059） and the National High Technology Research and Development Program of China （863 Program） （No. 2007AA05Z242）.