中文说明： matlab实现DVR补偿波形的示意，分为正常运行阶段和补偿阶段。正常运行阶段无补偿，补偿阶段为50Hz正弦波 代码简介，适用于后期开发，论文示意图等等
English Description：
The realization of DVR compensation waveform by Matlab is divided into normal operation stage and compensation stage. There is no compensation in normal operation stage, and the compensation stage is 50 Hz sine wave