Environmental concerns over the use of fossil fuels as energy sources for electric power generation have resulted in the rapid increase in the amount of wind-generated power connected to electrical power networks worldwide. As such, the inclusion of accurate wind turbine generator models in power system simulation software has become increasingly important. Steady-state and dynamic models of wind turbine generators are required for different types of simulation studies. The voltage profile is main issue when considering stable operation of wind farm. This paper presents the analysis of the effect of steady-state models of fixed-speed and variable speed wind turbine generators on voltage stability. The authors consider two types of wind generator models with the connection to weak bus of IEEE14 bus system and 75 bus Indian Utility systems are to be analyzed. © Research India Publications.