Title :
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
fDate :
11/1/2000 12:00:00 AM
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;
Journal_Title :
Power Systems, IEEE Transactions on
