DYNAMIC REACTIVE COMPENSATION SYSTEM AND METHOD

摘要

The invention features a system for connection to a utility power network. T he system includes a reactive power compensation device (10) coupled to the network and configured to transfer reactive power between the utility power network and the reactive power compensation device; a capacitor system (50a, 50b) configured to transfer capacitive reactive power between the utility power network and the capacitor system; an electro-mechanical switch (52) fo r connecting and disconnecting the capacitor system to the utility power network; an interface (56) associated with the electro-mechanical switch; a controller (60) configured to provide control signals for controlling the electro-mechanical switch; and a communication channel (54) for coupling the controller to the interface associated with the electro-mechanical switch. T he electro-mechanical switch, interface, controller, and communication channel together are configured to connect or disconnect the capacitor system from t he utility power network within about three line cycles or less of the nominal voltage frequency when a fault condition is detected on the utility power network. The system includes a reactive power compensation device coupled to the network and configured to transfer reactive power between the utility power network and the reactive power compensation device; a capacitor system configured to transfer capacitive reactive power between the utility power network and the capacitor system; an electro-mechanical switch for connectin g and disconnecting the capacitor system to the utility power network; an interface associated with the electro-mechanical switch; a controller configured to provide control signals for controlling the electro-mechanical switch; and a communication channel for coupling the controller to the interface associated with the electro-mechanical switch. The electro- mechanical switch, interface, controller and communication channel together are configured to connect or disconnect the capacitor system from the utilit y power network within about three line cycles or less of he nominal voltage frequency when a fault condition is detected on the utility power network.