Impacts of static and dynamic models on solutions of voltage stability simulations-case studies

Power system voltage stability has been paid much attention for many years. To investigate the voltage stability problem, a static model is used to examine the feasibility of power flow equations, while differential equations are employed to study the dynamic effectiveness of system components. In this paper, both dynamic and static models are used to study the phenomenon of voltage stability. A 2-bus and a practical systems, namely the Puget Sound power system, are used to serve as samples in the test results. The results pinpoint and classify the difference between these two kinds of models.<>