Title :
State estimation for real-time monitoring of distribution systems
Author :
Baran, Mesut E. ; Kelley, Arthur W.
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA
fDate :
8/1/1994 12:00:00 AM
Abstract :
Utilities currently use historical customer load data to forecast the loads in their distribution feeders for real-time feeder analysis and control. In this paper a three-phase state estimation method is developed to increase the accuracy of this load data. The method is based on the weighted least square approach and uses a three-phase node voltage formulation. The method can handle power, voltage, and current measurements. Test results indicate that state estimation can improve the forecasted load data by using real-time measurements. The effectiveness of branch current measurements were also tested
Keywords :
computerised monitoring; distribution networks; least squares approximations; load forecasting; power system measurement; real-time systems; state estimation; branch current measurements; control; current measurements; distribution feeders; distribution systems; historical customer load data; load forecasting; power measurements; real-time feeder analysis; real-time monitoring; state estimation; three-phase node voltage formulation; three-phase state estimation method; voltage measurements; weighted least square approach; Control systems; Current measurement; Load forecasting; Monitoring; Power measurement; Real time systems; SCADA systems; State estimation; Testing; Voltage;
Journal_Title :
Power Systems, IEEE Transactions on
