Control equipment installed in power plant or substation to ensure the stability of power system in case of large disturbance. It mainly realizes the functions of unit changeover, load changeover, fast reducing output, emergency lifting or falling of DC power. It is the second line of defense to maintain the safe and stable operation of power system.
It can be applied to different voltage levels and integrates local measurement, judgment, control and remote communication functions. It can not only form the safety and stability control system of regional power grid or national interconnected power grid, but also can be used for safety and stability control of single plant station.
