Method for controlling a renewable energy farm in compliance with obligations towards a power grid

A method for controlling a renewable energy farm comprising a wind turbine, the wind turbine being connected to a power grid, the method comprising:

• receiving a first request to stop the wind turbine;
• determining, at a first time, that stopping the wind turbine causes an obligation of the renewable energy farm towards the power grid to be unfulfilled;
• in response determining, at the first time, that stopping the wind turbine causes the obligation of the renewable energy farm towards the power grid to be unfulfilled, refraining from executing the first request;
• determining, at a second time after the first time, that stopping the wind turbine does not result in the obligation of the renewable energy farm towards the power grid to be unfulfilled;
• in response to determining, at the second time, that stopping the wind turbine does not result in the obligation of the renewable energy farm towards the power grid to be unfulfilled, executing the first request;
• and
• for a second request in which a power output of the wind turbine is decreased from a first power output to a second power output that is greater than zero does not cause the obligation of the renewable energy farm towards the power grid to be unfulfilled, executing the second request to decrease the power output of the wind turbine from the first power output to the second power output.