With the increased penetration of wind power it is important to carefully asses the impact of grid integration of wind turbine generators. Accurate wind turbine generator models are required for this purpose. Variable speed wind turbine generators are widely being interconnected to the grid to ensure optimum power capture from the wind energy. In this paper, an attempt is made to validate a variable speed doubly fed induction generator model with the field test results. The GE 1.5 MW wind turbine generator is a good example of doubly fed induction generator configuration which is already implemented in PSS/E software. These wind turbine generators are actually installed in the AIM Erie Shore Wind Generating Station of Hydro One Network Inc. A series of tests were performed in this wind farm in 2006 winter. A few of the tests are simulated in PSS/E to validate the existing models. Simulation results are found to be in good agreement with the field test results confirming the accuracy of the GE 1.5 MW wind turbine generator (WTG) models of PSS/E wind. The reasons for the mismatch between the simulation and actual results are also pointed out.