Enhancement of external system modeling for state estimation [power systems]

Author

Kim, Hongrae ; Abur, Ali

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

11

Issue

3

fYear

1996

fDate

8/1/1996 12:00:00 AM

Firstpage

1380

Lastpage

1386

Abstract

This paper addresses the issues of external power system modeling and the detection of topology errors in the external system. A set of significant measurements and branches are identified in the external system based on their sensitivities on the tie-line flows. Any errors in the topology of the external system branches that are identified as significant are then detected. This is based on the degree of colinearity of the columns of the sensitivity matrix to the calculated normalized residuals of the significant measurements in the external system. Simulation results are presented using the IEEE-118 bus system as an example

Keywords

load flow; matrix algebra; power system analysis computing; power system interconnection; power system state estimation; sensitivity analysis; IEEE-118 bus system; colinearity degree; computer simulation; external power system modelling enhancement; interconnection; sensitivities; sensitivity matrix columns; state estimation; tie-line flows; topology errors detection; Load flow; Load flow analysis; Power system analysis computing; Power system interconnection; Power system measurements; Power system modeling; Power system security; Power system simulation; State estimation; Topology;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.535678

Filename

535678