On-line voltage stability monitoring

Author

De Souza, Antônio C Zambroni ; De Souza, Julio C Stacchini ; Da Silva, Armando M Leite

Author_Institution

Inst. Electr. Eng., Fed. Univ. of Itajuba, Brazil

Volume

15

Issue

4

fYear

2000

fDate

11/1/2000 12:00:00 AM

Firstpage

1300

Lastpage

1305

Abstract

This paper presents a new methodology for online voltage stability assessment, consisting of two steps. Firstly, the time evolution of the power system operating state is modeled with the help of a forecasting-aided state estimator; secondly the voltage collapse point is determined through an extrapolation technique based on tangent vector behavior. Tests are carried out using the IEEE-14 bus system, where different operating scenarios are considered. The results show that monitoring system load trends may improve the assessment of voltage stability

Keywords

control system analysis computing; extrapolation; monitoring; power system analysis computing; power system dynamic stability; power system measurement; power system state estimation; IEEE-14 bus system; extrapolation technique; forecasting-aided state estimator; operating scenarios; power system online voltage stability monitoring; power system operating state; system load trends monitoring; tangent vector behavior; time evolution; voltage collapse point; voltage stability assessment; Extrapolation; Load flow; Monitoring; Power system dynamics; Power system modeling; Power system planning; Power system stability; Predictive models; State estimation; Voltage;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.898105

Filename

898105