基于PSCAD微电网系统数学模型，及相关仿真仿真-Mathematical model based on the the PSCAD micro-grid systems, and simulation

对基于freedom的微电网，进行了稳定性分析以及灵敏度分析-Microgrid based on freedom, stability analysis, and carried out sensitivity analysis

微网存在两种典型的运行模式：离网模式和并网模式。同时，两种模式之间的切换也应该实现无缝切换。考虑 到采用主从控制以实现无环流的微网中主变换器在微网中的重要地位，本文采用V/f电压控制做为离网时变换器控制方法， 通过逐步调整变换器输出电压使其跟随电网电压实现离网到并网的无缝切换；-There are two typical micro-grid operation modes: off-grid and grid mode mode. At the same time, switching