Development of a Power Plant Security Emergency Control Equipment —Equipment and Experiment

It mainly introduces the implementation technology and the physical simulation of WAW?1 power System security Emergency Control Equipment.The equipment is of multi CPU distributed and hierarchic system. It uses common memory to realize high speed communication, solves the technical problems of in phase sampling and state switchover of same data window calculation and synchronous calculation in the multi CPU system by both software and hardware. The physical simulation results show that the equipment can follow the run state change of power plant feeders, alarm correctly when line overload occurs; forecast transient stability correctly when fault occurs and put in off load measures to prevent system instability. The equipment can check up synchronization loss and start up disconnection when power system dynamic instability occurs, which meets the expected control demand.