The existing problems in reactive power/voltage operation of a power grid are introduce
and the structure design
algorithm design and function design about district reactive power/voltage automatic control system are explained.Using the real-time data of power system from SCADA
the control system completes the reactive power optimization and the remote control.The control scheme is operated by VQC or substation automation system(RTU).It can improve the voltage quality effectively
and represents the development direction of reactive power/voltage management in the district power grid.