中文摘要：

针对一个含微型燃气轮机的微电网系统，设计了下垂控制模型，包括功率控制环和电压电流双环控制。为使逆变器输出阻抗呈感性，设计了电压电流双环控制器的参数。所设计的多环控制器能够在电网发生故障时，实现微网在并网和孤岛两种模式之间的平滑切换。仿真结果证明了该控制策略的有效性。

英文摘要：

For a microgrid system containing a micro-turbine, this paper designed a droop control model including the power control loop and the voltage-current dual loop control. In order to make the inverter output show inductance characteristic, the parameters of the voltage-current dual loop controller were formulated. According to the simulation, the designed multi-loop controller can achieve the smooth switch between the utility connected operation and the islanding operation, which proves the effectiveness of the control strategy.