| 摘要 |
Disclosed is a method for operating a wind farm with a multiplicity of wind turbines and a power-to-gas unit (23) electrically connected thereto. The wind farm generates electric power if there is sufficient wind and feeds this power into an electrical grid (18) connected to the wind farm. The wind turbines of the wind farm are operated with a predetermined power curve. The electric power is generated by the wind farm once a first wind speed has been reached. The wind farm is in a partial-load operating mode as long as the wind speed is between the first wind speed and a second wind speed. The wind farm is in a nominal power range when the wind speed is in a range which is greater than the second wind speed. Only a predetermined proportion of the electric power generated by the wind farm is consumed in the power-to-gas unit (23), with the result that a combustible gas is generated in the power-to-gas unit (23). The proportion of the electric power which is generated by or the wind farm in the partial-load operating mode and which is not consumed in the power-to-gas unit (23) but is fed into the connected electric grid (18) is set to be virtually constant for a predetermined time segment. A data processing device is designed or assigned in the wind farm such that wind forecast data which apply to a predetermined time period are processed in the data processing device. A forecast value for the power which can be generated by the wind farm for the forecast time period safely or very reliably. The wind turbine or the wind farm constantly determines the difference between the present power of the wind turbine or the wind farm and the present forecast value and the determined differential absolute value is transmitted as control signal to the power-to-gas unit (23). The transmitted value is processed for controlling the power-to-gas unit (23) with the result that the power-to-gas unit (23) always draws the power which corresponds to the determined differential absolute value between the present power. |
