这个是暂态上机的电磁暂态部分，这种方法是比较流行的，而且语言也易懂一点-This is a transient electromagnetic transient part of the machine, this method is quite popular, but also understand that the language

电力系统电磁暂态程序开发用电力系统电磁暂态程序开发用-Power system using electromagnetic transient program development