Abstract: The development trend of computer supervisory control system was expatiated. Based on the special operation mode of pumped storage power station, the special control requirement of pumped storage unit was analyzed. The design principle and fundamental mode of computer supervisory control system in pumped storage power stations were discoursed, and the influence of computer supervisory control system on safety and stability of power grid operation was discussed.

Key words: pumped storage power station, computer supervisory control system, design principle, fundamental mode