为BPA电力系统分析程序中的潮流程序用户手册，主要介绍程序的特点和功能；程序控制语句和数据卡片格式以及典型应用例子，以便于程序使用者能应用该程序解决实际工程问题。-BPA power system analysis program for the current program user manual describes the features and functions of the program　the program control statements and data card formats as well as examples of typical applications, in order to program the user can use the program to solve practical engineering problems.