With increasing amount of wind power penetration, wind
farms begin to influence the power systems. When a power
system with many wind turbines is to be simulated, Wind
farm aggregation techniques are required to reduce the model
order while maintaining its accuracy. Different wind farm
techniques have been proposed to simulate and analysis wind
farm dynamics. In this paper a comparison between three
famous techniques: 1- full aggregated model using equivalent
wind speed; 2- full aggregated model using average wind
speed; and 3- semi aggregated model. Simulation have been
carried out for these techniques and compare them using
different effects such as wind farm power, reactive power and
system dynamics, besides the effect of varying variance on
these techniques.