Title :
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
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;
Conference_Titel :
Transmission and Distribution Conference and Exposition, 2001 IEEE/PES
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7285-9
DOI :
10.1109/TDC.2001.971239
