：随着计算机控制网络的迅速发展，串口通讯得到了广泛应用。文章针对在电站微机保护中碰到的串口通讯问题，提供了3种基于Delphi的串口通讯解决方法。-: With the computer-controlled networks, the rapid development of serial communication has been widely applied. Based on microprocessor-based protection in the power station they encountered in serial communication problems, provides three kinds of serial communication based on the Delphi solution.