中文说明：该文件是针对高等电力系统分析中电流控制的高压直流输电系统的模型，是研究生的大作业用matlab的较低版本方可打开。
English Description：
This document is a model of current controlled HVDC transmission system in advanced power system analysis. It is a large-scale project for graduate students. It can be opened only with the lower version of MATLAB.