Why do wind turbines sometimes stop even though the wind is blowing?

There are various reasons why wind turbines may stand still even though the wind is blowing. Often, these are planned maintenance or routine checks that are necessary for the safe operation of the facilities. It may also be that the power grid is already adequately absorbing electricity and no additional input is necessary. Furthermore, modern wind turbines have mechanisms that automatically stop them when the wind speed is too high to prevent damage.