1. A method for controlling a renewable energy system, comprising: controlling, by one or more control devices, a reactive power output for a renewable energy system based at least in part on an initial reactive power limit for the renewable energy system; determining, by the one or more control devices, a difference between a reactive power demand and an actual reactive power production for the renewable energy system; wherein when the difference falls outside a threshold, the method comprises: determining, by the one or more control devices, a correction factor for the initial reactive power limit; adjusting, by the one or more control devices, the initial reactive power limit to a corrected reactive power limit based at least in part on the correction factor; and controlling, by the one or more control devices, the reactive power output for the renewable energy system based at least in part on the corrected reactive power limit; detecting, by the one or more control devices, the difference returning to within the threshold; and in response to detecting the difference returning to within the threshold, controlling, by the one or more control devices, the reactive power output based at least in part on the initial reactive power limit.