OVERVOLTAGE PROTECTION OF AN ELECTROLYZER IN A WIND POWER PLANT

The invention relates to a method operating a renewable power plant (100) comprising at least one wind turbine (101) and an electrolyzer system (110) connected with a grid (190) via an internal grid (191), wherein the method comprises detecting an overvoltage condition relating to a voltage level at a power input (114) of the electrolyzer system, sending a warning signal to the at least one wind turbine in response to detecting the overvoltage condition, controlling the at least one wind turbine to perform a compensation action for lowering the voltage level at the power input of the electrolyzer system in response to receiving the warning signal.