中文摘要：

随着智能电网的大力发展,有关微网的研究也相继展开,特别是微网与电网的衔接及其自身的孤网运行问题。为了更加直观地研究不同功率交换模式下微网对电网稳定性的影响,引入了渗透率的概念,并运用DIg SILENT搭建了微网仿真模型。微网模型中包含了常规类分布式电源：风力发电、光伏发电及微型燃气轮机,通过观察不同渗透率下电压、频率、功角的变化,分析微网对电网的影响。通过仿真实现了不同模式下微网对电网影响的观察,探讨了造成影响的潜在因素以及抑制不利因素的措施,通过观察母线电压的变化验证了储能电池维持电压平衡的功用。

英文摘要：

The research on microgrid had been started with the rapid developing of smart grids recent years,especially in the field of the connection between microgrid and grid, also in the field of the running of grid-island. The penetration rate and DIg SILENT were imported in order to study the influence of microgrid in different power exchange model. Numerous conventional distributed generators, such as wind power, photovoltaic generation, micro gas turbine, were contained of microgrid. The analysis of impact of microgrids on power grid was made. The impact that caused by microgrid in different sets of patterns was researched and the factors that bring about the influence and measures of inhibiting influence were discussed. One function of battery which was maintaining the voltage was verified.