Abstract: Evaluating expected performance of a wind farm during a voltage event of a power grid, using a simulation tool. The tool initiates a simulated voltage event, at time, t0; initiates simulation of a subsequent response to the voltage event by the farm; retrieves information regarding an initial voltage state of a model of the farm, at t0, and predicts a final voltage state of the model of the wind farm, based on the retrieved information regarding the initial voltage state. At t0, a simulated output current, I, of the farm is lowered, based on the retrieved information and the predicted final voltage state, and a simulated output voltage, V, of the model of the farm, is monitored. The simulated output current, I, of the farm is subsequently adjusted, based on V, while monitoring V, I, and/or simulated output power of the model. Expected performance of the farm is then evaluated.