说明：  源模型是从pudn下载，里边的双闭环控制能用但是没有理论依据且参数设计不合理，下垂控制模块也是有问题，重新改进过的
(The source model is downloaded from the pudn. The double closed-loop control can be used, but there is no theoretical basis and the parameter design is unreasonable. The droop control module is also problematic and has been improved)