中文摘要：

采用基于主控微源恒压恒频的组网控制策略，主控微源建立微电网的电压和频率，从微源以最大功率点跟踪运行。在微源组网基础上提出微电网的即插即用技术，通过对微电网中主控微源的并网过程和离网过程平滑切换控制，实现微电网与公共电网的能量交换，并保证微电网内敏感负荷上电压稳定。对微电网即插即用的各个实现过程进行了详细分析，并对即插即用过程进行了仿真和实验研究。结果表明微电网即插即用技术正确可行，对本地敏感负荷影响较小，易于硬件实现。

英文摘要：

A microgrid networking strategy is adopted,which controls the master microsource to maintain the voltage and frequency of microgrid and the slave microsource to operate in the maximum power point tracking mode. The plug-and-play technology is then proposed,which can be used to realize the smooth connection or disconnection of the master microsource with the grid for the energy exchange between microgrid and utility grid while maintain the stable voltage for the sensitive loads in microgrid. The realization processes of microgrid plug-and-play are analyzed,simulated and experimentally studied in detail, which shows that,the plug-and-play technology of microgrid is correct and feasible,its hardware implementation is easy and it has less impact on local sensitive load.