A study of effect of different static load models and system operating constrains on static voltage stability

This paper uses continuation power flow to simulate P-V curves to analyze the effects of different load model and system operating constrains on power system static voltage stability. It is found that the critical points with ZIP and exponential function load model are relatively similar. While to restrict generators' reactive power output, it would be unfavorable for voltage stability. Transmission line active and apparent power limits have quite similarly influences on voltage stability. But current limits are different, which are much serious. In addition, nodal voltage amplitude low limits are better among 0.90-0.95p.u and upper limits almost have no influences.