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

Volume

9

Issue

3

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

1601

Lastpage

1609

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;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.336098

Filename

336098