REAL-TIME VOLT/VAR CONTROL IN A DISTRIBUTION SYSTEM USING MULTI-STAGE METHOD

This paper proposes a method for real-time control of both capacitors and ULTC in a distribution system to reduce the total power loss and to improve the voltage profile over a day. Multi-stage consists of the off-line stage to determine dispatch schedule based on a load forecast and the on-line stage to generate the time and control sequences at each sampling time. It is then determined whether one of the control actions in the control sequence is performed at the present sampling time. The proposed method is presented for a typical radial distribution system with a single ULTC and capacitors.