Multi area state estimation using synchronized phasor measurements

Author

Zhao, Liang ; Abur, Ali

Author_Institution

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

Volume

20

Issue

2

fYear

2005

fDate

5/1/2005 12:00:00 AM

Firstpage

611

Lastpage

617

Abstract

This paper investigates the problem of state estimation in very large power systems, which may contain several control areas. An estimation approach which coordinates locally obtained decentralized estimates while improving bad data processing capability at the area boundaries is presented. Each area is held responsible for maintaining a sufficiently redundant measurement set to allow bad data processing among its internal measurements. It is assumed that synchronized phasor measurements from different area buses are available in addition to the conventional measurements provided by the substation remote terminal units. The estimator is implemented and tested using different measurement configurations for the IEEE 118-bus test system and the 4520-bus ERCOT system.

Keywords

phase measurement; power system control; power system state estimation; substations; synchronisation; 4520-bus ERCOT system; IEEE 118-bus test system; bad data processing capability; decentralized estimation; multiarea state estimation; substation remote terminal units; synchronized phasor measurement; Area measurement; Control systems; Data processing; Large-scale systems; Power measurement; Power system measurements; Power systems; State estimation; Substations; System testing; Decentralized estimation; state estimation; synchronized phasor measurements;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/TPWRS.2005.846209

Filename

1425552