Abstract: The invention relates to a method for assessing the reliability of data originating from monitoring a wind turbine during operation thereof; said method comprising the steps of: allowing an array of sensors to sense one or more specific parameter values of said wind turbine; in respect of one or more sensors, transmitting said parameter value being sensed to a control system; allowing said control system to register an alarm condition in case a sensed parameter value, or a combination of two or more sensed parameter values, represents a situation in which it is desired to shut down the wind turbine according to one or more predetermined criteria; allowing said control system to provide an alarm value associated with said alarm condition; wherein said alarm value being selected from the group comprising: setting of said alarm and resetting of said alarm; wherein such alarm condition is associated with a specific alarm ID; wherein said method in respect of one or more alarm IDs furthermore comprising the ste

Abstract: The invention relates to a method for improving reporting of operational data of a wind turbine during operation thereof; said method comprising the steps of: allowing an array of sensors to sense one or more specific parameter values of said wind turbine during operation thereof; in respect of one or more sensors, transmitting said parameter value being sensed to a control system; allowing said control system to register a critical event in case a sensed parameter value, or a combination of two or more sensed parameter values, represents a situation in which it is desired to shut down the wind turbine according to one or more predetermined criteria; allowing said control system to set a specific alarm at a point in time at which a specific critical event is registered; and allowing said control system to reset said specific alarm at a point in time at which the registration of the presence of said critical event ceases; wherein each specific alarm is associated with a corresponding alarm ID; wherein said

Abstract: The invention relates to a monitoring system for monitoring the operation of a number N of wind turbines WT1, WT2, . . . WTN; wherein N being an integer, wherein each wind turbine WTX is being controlled by an associated control system CSX in accordance with an array of predetermined control criteria by transmitting control instructions CIX from said control system CSX to said wind turbine WTX, including control instructions CIX instructing said wind turbine WTX to shut down or to operate under reduced power production. Each wind turbine is being coupled to a master controller MC, wherein said master controller MC is being configured to be able to transmit to the control system CSX associated with one or more of said wind turbines WTX, a master instruction MIX, overruling control instructions being transmitted from said control system CSX to said wind turbine WTX with the view to shut down said wind turbine WTX or with the view to force said wind turbine WTX to operate under reduced power production.

Abstract: The invention relates to a method for improving reporting of operational data of a wind turbine during operation thereof; said method comprising the steps of: allowing an array of sensors to sense one or more specific parameter values of said wind turbine during operation thereof; in respect of one or more sensors, transmitting said parameter value being sensed to a control system; allowing said control system to register a critical event in case a sensed parameter value, or a combination of two or more sensed parameter values, represents a situation in which it is desired to shut down the wind turbine according to one or more predetermined criteria; allowing said control system to set a specific alarm at a point in time at which a specific critical event is registered; and allowing said control system to reset said specific alarm at a point in time at which the registration of the presence of said critical event ceases; wherein each specific alarm is associated with a corresponding alarm ID; wherein said

Abstract: The invention relates to a method for assessing the reliability of data originating from monitoring a wind turbine during operation thereof; said method comprising the steps of: allowing an array of sensors to sense one or more specific parameter values of said wind turbine; in respect of one or more sensors, transmitting said parameter value being sensed to a control system; allowing said control system to register an alarm condition in case a sensed parameter value, or a combination of two or more sensed parameter values, represents a situation in which it is desired to shut down the wind turbine according to one or more predetermined criteria; allowing said control system to provide an alarm value associated with said alarm condition; wherein said alarm value being selected from the group comprising: setting of said alarm and resetting of said alarm; wherein such alarm condition is associated with a specific alarm ID; wherein said method in respect of one or more alarm IDs furthermore comprising the ste

Abstract: The invention relates to a method for improving reporting of operational data from a wind turbine during operation thereof; said method comprising the steps of: i) controlling the operation of said wind turbine by using a control system; ii) in respect of a predetermined time segment allowing one or more sensors to sense one or more parameter values representing the magnitude of power production of said wind turbine and allowing said sensors to transmit said one or more parameter values to said control system; iii) from said one or more parameter values transmitted to said control system in step ii), allowing said control system to determine a total production of energy within said time segment; iv) from said one or more parameter values transmitted to said control system, allowing said control system to determine an accumulated value, representing an accumulated production of energy by said wind turbine until the end of said specific time segment; v) allowing said control system to transmit, to a monitori

Abstract: A method for authorization of a user to access a computer system locally at a site is described. The computer system determines whether a network connection to a remote authentication source is available. If the network connection is available, the computer system authenticates the user by interaction with the remote authentication source. If the network connection is not available, the computer system authenticates the user against a credential provided by the user. In this case, the credential will have been provided by or validated by the remote authentication source less than a predetermined time prior to the authenticating step, and the credential is a certificate issued by a certificate authority already trusted by the computer system and valid for a predetermined period of time. A suitable computer system is also described.

Abstract: Systems and methods for maintaining the active power production of a fluid turbine and regulating the temperature of an electrical generating component by controlling the reactive power production are disclosed. A thermal parameter of the electrical generating component is monitored. If the electrical generating component exceeds a thermal parameter the reactive power production of the turbine is reduced. A fluid turbine may be de-rated to further reduce an electrical generating component's thermal parameter. A fluid turbine may shut down to further reduce an electrical generating component's thermal parameter. A fluid turbine's power production is re-started when the electrical generating component returns to an acceptable thermal parameter.

Abstract: Methods for controlling a wind power plant that includes a plurality of wind turbines being operatively connected to a plant collector grid a power plant controller, a wind power plant, and a computer program product. The method may include generating an actual power reference signal in response to a determination of the power production of the wind power plant and comparing a desired power reference signal with the actual power reference signal. The method may include either applying a first filter characteristic as part of a generation of a wind turbine power reference if the desired power reference signal exceeds the actual power reference signal, or applying a second filter characteristic as part of the generation of the wind turbine power reference if the actual power reference signal exceeds the desired power reference signal. The first filter characteristic is different from the second filter characteristic.

Abstract: The invention relates to a central controller adapted for controlling a number of wind turbines. The wind turbines being controlled and monitored by the central controller via a first monitoring and control network and a second monitoring and control network. The term monitoring and control network is in accordance with an embodiment of the invention understood as a data communication network which communicates at least control data for control of wind turbines, but may also communicate monitoring data, i.e. measure data. A typical example of a control of wind turbines is that the central controller sets the power set-point (the power to be produced) of each wind turbine in the wind power plant. The important control signals may be separated from high-bandwidth requiring monitoring data, such as analysis data in the communication network.

Abstract: One or more variable pitch airfoils in fluid communication with a rotor of a fluid turbine can control the amount of energy directed to the rotor, and further control the amount of energy generated by the turbine. Varying the pitch of the airfoils may provide a means of controlling the power output of a fluid turbine without the need to control the pitch of the rotor blades, and may further provide a means of mitigating the effects of wind shear on the rotor. Variable pitch airfoils may also include a means of controlling the active power, reactive power and SCADA, of a group of fluid turbines.

Abstract: Embodiments herein control a wind turbine in a wind power plant where the wind turbine includes a wind turbine controller and at least one connected wind turbine component. Upon receiving a packet containing a “write/read” instruction, the wind turbine controller effectuates a write instruction by changing a set point associated with an attribute of a component in the wind turbine. The controller retrieves information data resulting from performing the write instruction from the component and transmits the information data to a central controller. The invention performs a fast and simple control loop by means of transmitting both the write and the read instruction within one single data packet.

Abstract: The present invention relates to systems and methods for maintain the active power production of a fluid turbine and regulating the temperature of an electrical generating component by controlling the reactive power production. A thermal parameter of the electrical generating component is monitored. If the electrical generating component exceeds a thermal parameter the reactive power production of the turbine is reduced. A fluid turbine may be de-rated to further reduce an electrical generating component's thermal parameter. A fluid turbine may shut down to further reduce an electrical generating component's thermal parameter. A fluid turbine's power production is re-started when the electrical generating component returns to an acceptable thermal parameter.

Abstract: A method for authorisation of a user to access a computer system locally at a site is described. The computer system determines whether a network connection to a remote authentication source is available. If the network connection is available, the computer system authenticates the user by interaction with the remote authentication source. If the network connection is not available, the computer system authenticates the user against a credential provided by the user. In this case, the credential will have been provided by or validated by the remote authentication source less than a predetermined time prior to the authenticating step, and the credential is a certificate issued by a certificate authority already trusted by the computer system and valid for a predetermined period of time. A suitable computer system is also described.

Abstract: Embodiments herein control a wind turbine in a wind power plant where the wind turbine includes a wind turbine controller and at least one connected wind turbine component. Upon receiving a packet containing a “write/read” instruction, the wind turbine controller effectuates a write instruction by changing a set point associated with an attribute of a component in the wind turbine. The controller retrieves information data resulting from performing the write instruction from the component and transmits the information data to a central controller. The invention performs a fast and simple control loop by means of transmitting both the write and the read instruction within one single data packet.

Abstract: A method of controlling a wind turbine in a wind power plant where the wind turbine includes a wind turbine controller and at least one connected wind turbine component. Upon receiving a packet containing a “write/read” instruction, the wind turbine controller effectuates a write instruction by changing a set point associated with an attribute of a component in the wind turbine. The controller retrieves information data resulting from performing the write instruction from the component and transmits the information data to a central controller. The invention performs a fast and simple control loop by means of transmitting both the write and the read instruction within one single data packet.

Abstract: Methods of registering events in a wind power system comprising at least two data processors. The data processors of said wind power system are mutually time synchronized. Events are registered in said at least two data processors. The timing of said events registered in different of said at least two data processors is established according to said time synchronization. Events may be registered and preferably analyzed according to a common timing. The event analysis makes it possible to establish an analysis where events of different wind turbines are basically interrelated and where information regarding such interrelation may be important or crucial for establishment of control or fault detection based on correctly timed events from different wind turbines.

Abstract: Communications systems and methods for a wind power plant having a plurality of wind turbines. The communications system may include a data communications network configured to provide connectivity between the wind turbines and a wireless access point coupled with the data communications network. The communications method may include wirelessly communicating signals between a mobile communications device and a wireless access point coupled with a data communications network providing connectivity between the wind turbines.

Abstract: Methods of registering events in a wind power system comprising at least two data processors. The data processors of said wind power system are mutually time synchronized. Events are registered in said at least two data processors. The timing of said events registered in different of said at least two data processors is established according to said time synchronization. Events may be registered and preferably analyzed according to a common timing. The event analysis makes it possible to establish an analysis where events of different wind turbines are basically interrelated and where information regarding such interrelation may be important or crucial for establishment of control or fault detection based on correctly timed events from different wind turbines.

Abstract: The invention relates to a method of registering events in a wind power system comprising at least two data processors, wherein the data processors of said wind power system are mutually time synchronized, wherein events are registered in said at least two data processors, wherein the timing of said events registered in different of said at least two data processors is established according to said time synchronization. According to an advantageous embodiment of the invention, events may be registered and preferably analyzed according to a common timing. This analyzing makes it possible to establish an analysis where events of different wind turbines are basically interrelated and where information regarding such interrelation is important or crucial for establishment of control or fault detection based on correctly timed events from different wind turbines.