Abstract: A system and method are provided for operating a power generating asset coupled to an electrical grid. Accordingly, a controller receives an environmental data set indicative of at least one environmental variable projected to affect the power generating asset over a plurality of potential modeling intervals. The controller then determines the variability of the environmental data set and a corresponding modeling-confidence level at each of the potential modeling intervals based on the variability. A modeling interval is thus selected corresponding to a desired modeling-confidence level. A computer-implemented model is employed to predict a future power profile for the power generating asset over the selected modeling interval. The future power profile is indicative of a power-delivery capacity of the power generating asset at each of a plurality of time intervals of the modeling interval.

Abstract: Systems and methods are provided for controlling a power generating asset having an energy storage device. Accordingly, a controller of the power generating asset initiates a state-change event for the energy storage device. The controller determines an actual equivalent series resistance (ESR) function for the energy storage device based on a change in a first and a second electrical condition at each of a plurality of sampling intervals of the state-change event. The controller determines a state-of-health rating for the energy storage device based on the actual ESR function and implements a control action based on the state-of-health rating.

Abstract: Systems and methods of driving a nacelle to a target nacelle yaw position are provided in which an auxiliary yaw position control system is coupled to a turbine control unit. The auxiliary yaw position control system receives a first signal representing a current nacelle yaw position and a second signal representing a target nacelle yaw position. The auxiliary yaw position control system determines, based upon the current nacelle yaw position and the target nacelle yaw position, whether and in which direction the nacelle needs to move to be in the target nacelle yaw position and sends nacelle yaw actuation signals to the turbine control unit. If it is safe to accept the nacelle yaw actuation signals, the auxiliary yaw position control system commands the yaw drive so it moves to the target nacelle yaw position.

Abstract: A method predicting and avoiding faults that result in a shutdown of a wind turbine includes receiving operational data of the wind turbine. The method also includes predicting, via a predictive model, current or future behavior of the wind turbine using the operational data. Further, the method includes determining, via a fault detection model, whether the current or future behavior indicates an upcoming short- or long-term fault occurring in the wind turbine. Moreover, the method includes determining, via a prescriptive action model, a corrective action for the wind turbine based on whether the future behavior of the wind turbine indicates the upcoming short- or long-term fault occurring in the wind turbine. Thus, the method also includes implementing the corrective action during operation to prevent the upcoming short- or long-term fault from occurring.

Abstract: A system and method are provided for operating a power generating asset coupled to an electrical grid. Accordingly, a controller receives an environmental data set indicative of at least one environmental variable projected to affect the power generating asset over a plurality of potential modeling intervals. The controller then determines the variability of the environmental data set and a corresponding modeling-confidence level at each of the potential modeling intervals based on the variability. A modeling interval is thus selected corresponding to a desired modeling-confidence level. A computer-implemented model is employed to predict a future power profile for the power generating asset over the selected modeling interval. The future power profile is indicative of a power-delivery capacity of the power generating asset at each of a plurality of time intervals of the modeling interval.

Abstract: A system and method for operating a wind farm connected to a power grid, the wind farm having one or more wind turbines includes implementing a shutdown mode for the one or more wind turbines of the wind farm in response to receiving a shutdown command. The shutdown mode includes disconnecting the one or more wind turbines of the wind farm from the power grid via one or more respective individual turbine controllers and reducing, via the individual turbine controllers, a rotor speed of the one or more wind turbines to a cut-in speed. After the shutdown command is cleared, the method further includes reconnecting the one or more wind turbines to the power grid.

Abstract: Systems and methods are provided for controlling a power generating asset having an energy storage device. Accordingly, a controller of the power generating asset initiates a state-change event for the energy storage device. The controller determines an actual equivalent series resistance (ESR) function for the energy storage device based on a change in a first and a second electrical condition at each of a plurality of sampling intervals of the state-change event. The controller determines a state-of-health rating for the energy storage device based on the actual ESR function and implements a control action based on the state-of-health rating.

Abstract: A method for controlling a wind farm electrical power system is presented. The wind farm electrical power system includes a controller and a plurality of wind turbines electrically connected to an electrical grid through a point of interconnection. Each wind turbine includes a voltage regulator. The method includes receiving, via the controller, one or more electrical signals associated with the point of interconnection for a frequency domain. Further, the method includes estimating, via an estimator of the controller, a voltage sensitivity of the electrical grid using the one or more electrical signals. Moreover, the method includes dynamically controlling a voltage of the wind farm electrical power system at the point of interconnection based on the voltage sensitivity.

Abstract: A method for controlling a wind farm electrical power system is presented. The wind farm electrical power system includes a controller and a plurality of wind turbines electrically connected to an electrical grid through a point of interconnection. Each wind turbine includes a voltage regulator. The method includes receiving, via the controller, one or more electrical signals associated with the point of interconnection for a frequency domain. Further, the method includes estimating, via an estimator of the controller, a voltage sensitivity of the electrical grid using the one or more electrical signals. Moreover, the method includes dynamically controlling a voltage of the wind farm electrical power system at the point of interconnection based on the voltage sensitivity.

Abstract: A method for improving power production of a wind turbine includes obtaining, by a controller having one or more processors, wind forecast data of the wind turbine. The method also includes scheduling, by the controller, one or more health checks for one or more components of the wind turbine based, at least in part, on the wind forecast data. Moreover, the method includes implementing, via the controller, the one or more health checks based on the scheduling such that the one or more health checks are implemented during time periods having wind speeds below a predetermined threshold.

Abstract: A system and method for operating a wind farm connected to a power grid, the wind farm having one or more wind turbines includes implementing a shutdown mode for the one or more wind turbines of the wind farm in response to receiving a shutdown command. The shutdown mode includes disconnecting the one or more wind turbines of the wind farm from the power grid via one or more respective individual turbine controllers and reducing, via the individual turbine controllers, a rotor speed of the one or more wind turbines to a cut-in speed. After the shutdown command is cleared, the method further includes reconnecting the one or more wind turbines to the power grid.

Abstract: The present disclosure is directed to a method for minimizing energy loss caused by yaw untwist of a nacelle of a wind turbine. The method includes monitoring, via at least on sensor, one or more wind conditions near the wind turbine. The method also includes processing, via a controller, the one or more wind conditions for a given time interval. Further, the method includes monitoring, via the controller, a position of the nacelle. The method also includes triggering, via the controller, a yaw untwist operation when the position of the nacelle has rotated from an original position above a predetermined yaw threshold and the processed wind conditions are below a predetermined wind condition threshold.

Abstract: The present disclosure is directed to a method for minimizing energy loss caused by yaw untwist of a nacelle of a wind turbine. The method includes monitoring, via at least on sensor, one or more wind conditions near the wind turbine. The method also includes processing, via a controller, the one or more wind conditions for a given time interval. Further, the method includes monitoring, via the controller, a position of the nacelle. The method also includes triggering, via the controller, a yaw untwist operation when the position of the nacelle has rotated from an original position above a predetermined yaw threshold and the processed wind conditions are below a predetermined wind condition threshold.

Abstract: The present subject matter is directed to a system and method for operating a wind turbine. More specifically, the system and method determines a dynamic cut-in wind speed for the wind turbine based on one or more environmental conditions. In one embodiment, the method includes providing a predetermined cut-in wind speed for the wind turbine based on at least one estimated environmental condition for a wind turbine site; determining one or more actual environmental conditions near the wind turbine for a predetermined time period at the wind turbine site; determining a variance between the at least one estimated environmental condition and the one or more actual environmental conditions; calculating a dynamic cut-in wind speed based on the variance; and, operating the wind turbine based on the dynamic cut-in wind speed so as to increase wind turbine operational efficiency.

Abstract: The present disclosure is directed to a system and method for mitigating ice throw from one or more rotor blades of a wind turbine during operation. The method includes monitoring one or more ice-related parameters of the wind turbine. Thus, the ice-related parameters are indicative of ice accumulation on one or more of the rotor blades. In response to detecting ice accumulation, the method also includes implementing an ice protection control strategy. More specifically, the ice protection control strategy includes determining a yaw position of the wind turbine and determining at least one of a power set point or a speed set point for the wind turbine based on the yaw position.

Abstract: The present subject matter is directed to a system and method for operating a wind turbine. More specifically, the system and method determines a dynamic cut-in wind speed for the wind turbine based on one or more environmental conditions. In one embodiment, the method includes providing a predetermined cut-in wind speed for the wind turbine based on at least one estimated environmental condition for a wind turbine site; determining one or more actual environmental conditions near the wind turbine for a predetermined time period at the wind turbine site; determining a variance between the at least one estimated environmental condition and the one or more actual environmental conditions; calculating a dynamic cut-in wind speed based on the variance; and, operating the wind turbine based on the dynamic cut-in wind speed so as to increase wind turbine operational efficiency.