Multiphase power flow and state estimation for power distribution systems

Author

Sakis Meliopoulos, A.P. ; Zhang, Fan

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

Volume

11

Issue

2

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

939

Lastpage

946

Abstract

A multiphase power flow model and state estimation for distribution systems are formulated and solution methods are presented. The multiphase power flow model is based on fully asymmetric modeling of the power distribution system. The state estimation uses this model in conjunction with synchronized measurements. The method provides an estimate of the total electric load for each distribution circuit without the requirement of knowledge of the individual loads along the circuit. The paper addresses the following issues: (a) modeling; (b) implementation; (c) observability; and (d) performance. The overall performance of the method is described in terms of confidence level versus error. The concepts are illustrated with a simplified distribution system

Keywords

distribution networks; least squares approximations; load flow; power system analysis computing; power system state estimation; asymmetric modeling; computer simulation; confidence level versus error; implementation; multiphase power flow model; observability; performance; power distribution systems; state estimation; synchronized measurements; Circuits; Convergence; Load flow; Load flow analysis; Medical services; Observability; Power distribution; Power engineering and energy; Power system modeling; SCADA systems; State estimation;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.496178

Filename

496178