Contingency triggered voltage instability in power systems

Author

Begovic, Miroslav M. ; Mills, Roger Q., III

Author_Institution

Georgia Inst. of Technol., Atlanta, GA, USA

fYear

1990

fDate

1-3 May 1990

Firstpage

1827

Abstract

An algorithm is presented for identifying critical generators and loads in power systems with voltage problems. It is based on sensitivity analysis of generated reactive powers with respect to load requirements. System loading based on a small number of independent parameters and an algorithm for identifying critical single-line outages based on the information from sensitivity analysis are proposed. The algorithm was tested on a 39-bus system. The method does not guarantee that the outages critical for the transfer of active powers will be identified, but it identifies those outages which may result in severe voltage problems in a heavily loaded system

Keywords

electric generators; load forecasting; power systems; sensitivity analysis; stability; 39-bus system; active powers; critical generators; critical loads; critical single-line outages; generated reactive powers; independent parameters; load requirements; power systems; sensitivity analysis; severe voltage problems; Bifurcation; Jacobian matrices; Load flow; Power generation; Power system analysis computing; Power system modeling; Power systems; Reactive power; Sensitivity analysis; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1990., IEEE International Symposium on

Conference_Location

New Orleans, LA

Type

conf

DOI

10.1109/ISCAS.1990.112004

Filename

112004