Vestas Wind Systems A/s

Scada International A/s

Ogin, Inc.

Bo Lovmand

John Bengtson

Søren Dalsgaard

Niels Erik Danielsen

Per Hagen Nielsen

Tage Kristensen

Keld Rasmussen

Ove Styhm Kristensen

Claus Sejdelin Schrøder

Bjørn Priisholm Fuglsang

Ole Helbo

The invention relates to a monitoring system for monitoring the operation of a number N of wind turbines WT, WT, . . . WT; wherein N being an integer, wherein each wind turbine WTis being controlled by an associated control system CSin accordance with an array of predetermined control criteria by transmitting control instructions CIfrom said control system CSto said wind turbine WT, including control instructions CIinstructing said wind turbine WTto 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 CSassociated with one or more of said wind turbines WT, a master instruction MI, overruling control instructions being transmitted from said control system CSto said wind turbine WTwith the view to shut down said wind turbine WTor with the view to force said wind turbine WTto operate under reduced power production. The monitoring system MS, in respect of each wind turbine WT, is being configured to receive and log from the corresponding control system CSinformation relating to timestamp and information associated with the specific condition or reason for making said wind turbine WTshut down or operate under reduced power production; as well as duration of such forced power reduced operation wherein said monitoring system MS is being configured to generate an operational report OR, wherein said operational report OR sets out details as to time stamps, duration and reason or condition causing such shut downs or operation under reduced power production.

Monitoring system for wind turbines

The invention described herein relates to a process for improving reporting of operational data of a wind turbine during operation thereof and a system for carrying out the process which may include a computer program for carrying out the process.

Method for improving reporting of operational data of a wind turbine

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.

Method and apparatus for on-site authorisation

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.

Thermal protection of electrical generating components under continuous active power generation

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.

Control of a wind power plant

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.

System and method of controlling a wind turbine in a wind power plant

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.

Method of controlling a wind turbine in a wind power plant

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.

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.

Method and system for registering events in wind turbines of a wind power system

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.

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Hadsten, Denmark

Bo Lovmand