Generating auxiliary power for the wind turbine

It describes a method and system for generating auxiliary power for the wind turbine for the island, wherein the wind turbine may include a generator, the generator is configured to provide power to the main power grid. The method comprising: detecting the wind turbine and the islanding operation mode mains connected electrically disconnected; in response to the disconnect, the rotational speed of the wind turbine is adjusted to the range of low rotational speed value; said generator output converted value suitable for charging the secondary power distribution system; and the output of the converter is connected to the secondary power distribution system.