Wind turbine ice protection control systems and methods for controlling ice protection measures at a wind turbine are provided. The ice protection control system operates in multiple locations: the first being at least one remote wind turbine site and the second at least one offsite control office location. The ice protection control system includes sensors on at least one wind turbine at least one remote site for sensing internal and external environmental conditions and/or wind turbine outputs. The sensors output data which is received by a network at the wind turbine and then sent to a second network at an offsite location where it is analyzed to determine actions to be taken. In this way, multiple wind turbines at multiple wind turbine remote sites can be controlled by a single control system. Systems and methods for creating, retrieving, and storing sensor data within the ice protection control systems are also discussed.

The present disclosure is related to methods (400; 500; 600) configured for detecting the state of a wind turbine blade (22). The methods (400; 500; 600) comprising receiving (401; 501) load signals from a wind turbine blade (22), determining (402; 503) an energy of the load signal in a first and second frequency and comparing (403; 504) said energy to generate a flag signal if the energy in the first frequency is smaller than the energy in the second frequency. A control system (600) suitable to detect the state of a wind turbine blade (22) is also provided, as well as wind turbines (10) including such a control system (600).

A method and a device for determining an iced condition of a blade of a wind turbine is provided. A target nacelle displacement along a rotational axis is acquired as a function of at least one predetermined parameter in an ice-free condition of the blade; an actual nacelle displacement along the rotational axis is measured by a displacement sensor; and the iced condition of the blade is determined if a difference between the target nacelle displacement and the actual nacelle displacement exceeds a predetermined threshold value.

Methods and systems are described for a moisture and icing detection system for an aircraft with an exterior component. The moisture and icing detection system includes a flexible sensor film comprising a water sensor and temperature sensor for application to an exterior surface of the exterior component. The moisture and icing detection system also includes a sensor head in electric communication with water sensor and temperature sensor of the flexible sensor film that generates an icing condition warning if the water sensor indicates the presence of water or ice on the flight surface and the temperature sensor indicates temperatures less than the freezing temperature of water. The icing condition warning may then be acted upon through a control action initiated by the moisture and icing and detection system.

Wind turbine ice protection control systems and methods for controlling ice protection measures at a wind turbine are provided. The ice protection control system operates in multiple locations: the first being at least one remote wind turbine site and the second at least one offsite control office location. The ice protection control system includes sensors on at least one wind turbine at least one remote site for sensing internal and external environmental conditions and/or wind turbine outputs. The sensors output data which is received by a network at the wind turbine and then sent to a second network at an offsite location where it is analyzed to determine actions to be taken. In this way, multiple wind turbines at multiple wind turbine remote sites can be controlled by a single control system. Systems and methods for creating, retrieving, and storing sensor data within the ice protection control systems are also discussed.

A method for operating a wind turbine is disclosed, wherein said wind turbine comprises a rotor having at least one rotor blade with a rotor blade surface and an icing detection device for detecting an icing condition for the rotor blade and/or for detecting the presence of icing on the rotor blade. Further, a controller configured for controlling a rotational speed of the rotor can be provided. The method comprises the steps of monitoring, via the controller and/or via the icing detection device, whether an icing condition for the rotor blade is present and/or if icing on the surface of the wind turbine is present, thus, that ice has been generated on the surface. If an icing condition is detected, or if it is detected that ice has generated on the surface of the rotor blade, the wind turbine is operated further according to a de-rated icing-mode having a reduced rotational speed, in particular while maintaining a generation of electrical energy by a generator of the wind turbine.

The present disclosure is related to methods (400; 500; 600) configured for detecting the state of a wind turbine blade (22). The methods (400; 500; 600) comprising receiving (401; 501) load signals from a wind turbine blade (22), determining (402; 503) an energy of the load signal in a first and second frequency and comparing (403; 504) said energy to generate a flag signal if the energy in the first frequency is smaller than the energy in the second frequency. A control system (600) suitable to detect the state of a wind turbine blade (22) is also provided, as well as wind turbines (10) including such a control system (600).

Provided is a control method for de-icing blades of a wind power generator, including: Step S101: performing real-time monitoring of temperature of a surface of a blade of the wind power generator, and constructing a first positional temperature sequence at a time interval of v; and Step S102: calculating actual temperature at each position on the surface of the blade of the wind power generator according to the positional temperature sequence, and generating a second positional temperature sequence. In the present disclosure, it can be avoided that a discrepancy between the temperature acquired and the actual temperature of the surface of the wind power generator; and weight differences that may exist among three blades are taken into account, and synchronous de-icing operations are performed after eliminating the weight differences, so that ice treatment can be achieved without shutdown, and the stable operation of the wind power generator can be ensured.

Techniques for operating a wind farm include setting an area of interest, a forecast interval, and a maximum lag time for using mesoscale forecasts. Mesoscale forecasts are collected for a training time interval TT at model grid locations. TT is at least ten times the maximum lag time. Fine-scale wind measurements are collected in the area during TT. Selected parameters of the mesoscale forecasts, and coefficients of an evolving ML forecast model are determined based on the mesoscale forecasts and the fine-scale wind measurements during the TT ending at the current time. Then, the coefficients and the mesoscale forecast for the selected parameters during the lag time produce a forecast wind at the wind turbines during the forecast interval. Operation of the wind farm is based on the forecast wind.