Analysis of voltage collapse by simulation

Author

Begovic, Miroalav M. ; Phadke, A.G.

Author_Institution

Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

fYear

1989

Firstpage

1855

Abstract

Voltage collapse was investigated by simulations on a midsize power system with 39 buses and 10 generators. System loads were modeled as constant complex power corrupted with Gaussian noise of a small magnitude. The initial conditions for simulation were determined by singular-value decomposition of the load-flow Jacobian. The collapse-inducing disturbance was chosen to be a gradual increase of a portion of the total system load corrupted by noise. A systemwide voltage collapse was observed in all simulated scenarios. The slow dynamics of the collapse caused by load fluctuations opens perspectives for effective online detection. The constraints on the reactive power generation are discussed along with their effect on the stability boundary

Keywords

digital simulation; load flow; power system analysis computing; power system protection; 39 bus system; Gaussian noise; collapse-inducing disturbance; computer simulation; constant active power; constant complex power; effective online detection; load fluctuations; load-flow Jacobian; midsize power system; power system stability; power system voltage collapse; reactive power generation constraints; slow dynamics; stability boundary; systemwide voltage collapse; voltage stability; Analytical models; Fluctuations; Gaussian noise; Jacobian matrices; Load modeling; Power generation; Power system analysis computing; Power system modeling; Power system simulation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1989., IEEE International Symposium on

Conference_Location

Portland, OR

Type

conf

DOI

10.1109/ISCAS.1989.100729

Filename

100729