Voltage stability assessment of the National Grid system using modern analytical tools

Author

Austria, Ricardo R. ; Xu, Xiaokang ; Power, Michael

Author_Institution

Power Technol. Inc., Schenectady, NY, USA

Volume

1

fYear

2001

fDate

2001

Firstpage

229

Abstract

The paper presents a three-step analytical approach to identifying voltage stability concerns using modern network analysis tools. The first step in the analytical approach is to develop a load flow model for contingency analysis. This allows the identification of system steady-state low voltages or voltage collapses following contingencies. The second step is to apply an optimization algorithm/model to determine the reactive margin, or the amount and location of reactive compensation required to eliminate the low voltages or voltage collapses. P-V or Q-V curves are generated for comparison in this step. The final step is to verify the voltage stability response to the contingencies via time-domain simulation, including the impact of different load models

Keywords

control system analysis computing; load flow control; optimal control; optimisation; power system analysis computing; power system control; power system dynamic stability; time-domain analysis; Ireland; P-V curves; Q-V curves; computer simulation tools; contingency analysis; load flow model; optimization algorithm; power system voltage stability assessment; reactive margin determination; steady-state low voltages identification; time-domain simulation; voltage collapses identification; Analytical models; Load flow; Load flow analysis; Load modeling; Low voltage; Power system modeling; Power system simulation; Power system stability; Stability analysis; Steady-state;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Conference and Exposition, 2001 IEEE/PES

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-7285-9

Type

conf

DOI

10.1109/TDC.2001.971239

Filename

971239