A study on voltage collapse mechanism in electric power systems

Author

Lee, Byung Ha ; Lee, Kwang Y.

Author_Institution

Dept. of Electr. & Comput. Eng., Pennsylvania State Univ., University Park, PA, USA

Volume

6

Issue

3

fYear

1991

fDate

8/1/1991 12:00:00 AM

Firstpage

966

Lastpage

974

Abstract

A mechanism of the dynamic phenomenon of voltage collapse is presented from the physical point of view. It is shown that an iterative reaction of voltage drop between a dynamic load and the system network can cause voltage collapse. The dynamic phenomenon of voltage collapse is analyzed on a simple power system model which includes a synchronous motor. Dynamic equations describing the mechanism of voltage collapse caused by a very small disturbance are derived, and the physical explanation of the voltage collapse mechanism is presented in detail for the case when the system is operating near the bifurcation point and its linearized system matrix has a very small negative eigenvalue. It is shown that an iterative reaction of voltage drop between a dynamic load and the system network can cause voltage collapse

Keywords

power systems; synchronous motors; bifurcation point; dynamic load; linearized system matrix; negative eigenvalue; power systems; synchronous motor; voltage collapse mechanism; Bifurcation; Heart; Load flow; Power system analysis computing; Power system dynamics; Power system interconnection; Power system modeling; Power system stability; Stability analysis; Voltage;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.119236

Filename

119236