Abstract: An automatic real time supervisory system of hydropower station was introduced. The functions of the system includes real time data acquisition, primary diagram display, curve diagram and bar graph creating, Chinese report creating, accident comprehensive handling and others. The automation level, safety and reliability were raised due to application of the system, the operators were relieved from traditional, troublesome manual meter reading work, and the hydropower station can run in unattended mode and only few watchman needed.

Key words: automatic supervisory system, real time supervision, software structure