Patent Application
20110145811
The present disclosure generally relates to wind turbines which may be arranged within a wind farm, and in particular relates to a system for software update of wind energy hardware components such as a wind turbine controller. Furthermore, the present disclosure relates to a method for exchanging data between a server unit and the wind turbine.
Wind turbines are of increasing importance with respect to reliable and environmentally safe energy sources. Typically, a wind turbine includes mechanical components, electrical and electronic components and software components. At specific maintenance intervals, mechanical components may be exchanged if they are used, damaged or have to be repaired. Furthermore, electrical and electronic components may be exchanged in accordance with operational states of the wind turbine.
Typically, a wind turbine is controlled by means of control data which are provided externally. These control data may be transferred to the wind turbine such that a desired function within the wind turbine may be performed. Whereas mechanical, electronic and electrical components are exchanged in long intervals, control data may change in short time intervals.
In order to provide a wind turbine with new control data or new software data, old control data or old software data are overwritten by the new control data and the new software data, respectively. An installation of software data at a hardware component may include an overwriting of old software data by new software data, or a complete replacement of a software package at a hardware component. During a transfer of new data from an external unit to the wind turbine, during overwriting of new data onto old data etc., the wind turbine operation may be interrupted. Such kind of interruption of a wind turbine operation may decrease the energy production of a specific wind turbine within a wind farm. The energy production is typically measured in units of AEP, i.e. an annual energy production. An updating of control and/or software data provided within a wind turbine may take place at different moments in time.
In many cases, this kind of data transfer may take place at a moment in time when the workload of the wind turbine is high. Environmental conditions of the wind turbine, site conditions of the wind turbine at a wind farm where the wind turbine is located, an electrical grid condition and/or an operational state of the wind turbine are issues when an appropriate moment of time for updating control and/or software data is chosen.
In view of the above, a method for installing software data at at least one hardware component of a wind energy device is provided, the hardware component being adapted to operate on the basis of the software data, the method including providing the software data detecting a network parameter indicating an operational condition of a network used for a software download; determining, on the basis of the network parameter, whether the network is in an appropriate network download condition; if the network is in an appropriate network download condition, downloading of the software data from a download server to a data center; detecting an operation parameter indicating an operational condition of the at least one hardware component; determining, on the basis of the operation parameter, whether the hardware component is ready for software installation; and if the hardware component is ready for software installation, installing the software data from the data center at the hardware component.
According to a further embodiment, a computer program adapted for carrying out a method for installing software data at at least one hardware component adapted to operate on the basis of the software data is provided, the computer program including an input for the software data a network parameter detector, the network parameter indicating an operational condition of a network used for a software download; a network determinator for determining, on the basis of the network parameter, whether the network is in an appropriate network download condition, wherein, if the network is in an appropriate network download condition, the software data are downloaded from a download server to a data center; an operation parameter detector, the operation parameter indicating an operational condition of the at least one hardware component; and an operation determinator for determining, on the basis of the operation parameter, whether the hardware component is ready for software installation, wherein, if the hardware component is ready for software installation, the software data are installed from the data center at the hardware component.
According to yet a further embodiment, a system adapted for installing software data at at least one hardware component of a wind energy device is provided, the system including a download server; a network parameter detection unit adapted for detecting a network parameter indicative of an operational condition of a network used for a software download from the download server; an operation parameter detection unit adapted for detecting an operation parameter indicative of an operational condition of the at least one hardware component; and a determination unit operatively connected to the operation parameter detection unit and adapted for determining, on the basis of the detected operation parameter, an appropriate moment in time for installing the software at the hardware component.
Further aspects, advantages and features of the present invention are apparent from the dependent claims, the description and the accompanying drawings.
A full and enabling disclosure, including the best mode thereof, to one of ordinary skill in the art is set forth more particularly in the remainder of the specification including reference to the accompanying drawings wherein:
Reference will now be made in detail to the various exemplary embodiments, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation and is not meant as a limitation. For example, features illustrated or described as part of one embodiment can be used on or in conjunction with other embodiments to yield yet a further embodiment. It is intended that the present disclosure includes such modifications and variations.
A number of embodiments will be explained below. In this case, identical structural features are identified by identical reference symbols in the drawings. The structures shown in the drawings are not depicted true to scale but rather serve only for the better understanding of the embodiments.
A network parameter detection unit 401 determines a network parameter 402 for the software download server 400. This network parameter 402 indicates an operational condition of a network 407 used for a software download 403 from the software download server 400 to the data center 200. Furthermore, the data center 200 is connected to the network parameter detection unit 401 which enable a detection of an operational condition of an internal grid arranged within a wind farm.
In accordance with the determined network parameter 402 a download starting time and or a download duration may be determined. E.g. if heavy network traffic is present, it may be decided to postpone a download starting time. Instead, it may be decided to download the software data at once and to accept a longer download duration. In addition to that, it may be decided to download the software data in data packages at different download starting times and/or at different download durations.
It is noted here that the term “time” used with respect to a software download may relate to, but is not restricted to, a date such as day/month/year, hours/minutes/seconds, a specific moment in time, and a signal provided by a clock.
If an appropriate network download condition is detected, a software download 403 from the software download server 400 to the data center 200 is performed. Then an operation parameter 406 indicating an operational condition of a respective hardware component 404 where the software data may be installed, is determined for each hardware component 404. If the operation parameter indicates that the hardware component is ready for installation of software data, a software installation 405 is performed at the respective hardware component 404.
In accordance with the determined operation parameter 406 an installation starting time and or an installation duration for a software installation from the data center 200 to a specific hardware component 404-1, . . . 404-3 may be determined. E.g. if the respective hardware component is not in a condition appropriate for software installation, it may be decided to postpone an installation starting time. Instead, it may be decided to install the software data at once and to accept a longer installation duration. In addition to that, it may be decided to install the software in data packages at different installation starting times and at different installation durations.
An appropriate condition for software installation may depend on at least one operation parameter of the respective hardware component 404. The operation parameter may be determined on the basis on environmental conditions of the hardware component, on site conditions, on grid conditions and/or on an operational state of the hardware component such that an efficient software installation from the data center 200 to the hardware component 404 can be provided.
It is noted here that the term “time” used with respect to a software installation at a respective hardware component may relate to, but is not restricted to, a date such as day/month/year, hours/minutes/seconds, a specific moment in time, and a signal provided by a clock.
At a succeeding step S3 a network parameter indicating an operational condition of the network 407 (see
Then, in a step S6, an operation parameter indicating an operational condition of a hardware component 404 where the software data may be installed, is detected. The operation parameter may be detected at the location of the wind turbine and is selected from the group consisting of workload of the hardware component, environmental condition at the hardware component, grid stability, operational state of wind turbine, a condition of the site of the wind turbine (site condition), a condition of an electrical grid to which the wind turbine is connected (grid condition), an operational state of the wind turbine, and any combination thereof. The detected environmental condition is selected from the group consisting of a wind velocity, a wind direction, an ambient temperature, a humidity level, and any combination thereof. The operational state of the wind turbine is selected from the group consisting of a defect-downtime, a low energy operation, a repair period, a maintenance interval, an inspection period, and any combination thereof. Furthermore, the site condition may include a wind shadow at a wind turbine which is arranged within a wind farm. Moreover, the grid condition may include at least a grid stability and/or a grid load. At a following step S7 it is determined whether the hardware component 404 is ready for a software installation. If it is determined in step S7, that the hardware component 404 is not ready for a software installation, the procedure returns to the step S6.
If it is determined in step S7 that the hardware component 404 is ready for a software installation, the procedure advances to a step S8 where the software data are installed at the hardware component 404. In a following step S9, after software installation, the procedure is ended.
The method includes the steps S1 to S9. In a step S1, the procedure is started. Then the procedure advances to a step S2 where software data are provided. At a succeeding step S3 a network parameter indicating an operational condition of the network 407 used for software download is detected. At a following step S4 it is determined whether the network is in an appropriate network download condition or not.
If it is determined in step S4, that the network 407 is in an appropriate network download condition, the software data are downloaded to the data center 200 in a step S5. If it is determined in step S4, that the network 407 is not in an appropriate network download condition, the procedure returns to step S2.
Then, in a step S6, an operation parameter is detected which indicates an operational condition of a hardware component 404 which may be one of a plurality of hardware components 404-1, 404-2, 404-3, . . . , (see
If it is determined in step S7, that the hardware component 404 is ready for a software installation, the procedure advances to a step S8 where the software data are installed at the respective hardware component 404 of the plurality of hardware components 404-1, 404-2, 404-3, . . . .
In a following step S8a it is determined whether the software data should be installed at a further hardware component of the plurality of hardware components. If it is determined in step S8a, that at least one further hardware component 404 should be provided with the software data, the procedure returns to step S6, where another operation parameter is detected which indicates an operational condition of the at least one further hardware component 404 where the software data may be installed.
If it is determined in step S8a, that no more hardware components 404 shall be provided with the software data, the procedure advances to a step S9 where the software installation procedure is ended.
A pitch angle of the rotor blade 101 may be adjusted by turning the rotor blade 101 about the rotor blade longitudinal axis 113, as shown by means of an arrow 108. The pitch angle 108 which is adjusted by means of pitch motors is adapted to a speed of incoming wind 105.
According to a typical embodiment, the wind turbine 100 includes a hardware component which may be provided as a wind turbine controller 114 adapted for controlling an operational state of the wind turbine. Furthermore, the wind turbine controller 114 is used for providing a data exchange link 115 to an external control unit, which will be described herein below. It is noted here that the wind turbine controller 114 described herein is only exemplary for a software-operated hardware component. or any other hardware-based unit connected to the data center and capable of receiving software data.
The data which are exchanged by the data exchange link 115 may include, but are not restricted to, control data, software data, data updates, operation parameters, etc. The operation parameters may be detected at the location of the wind turbine and are selected from the group consisting of a detected environmental condition at the wind turbine 100, a condition of the site of the wind turbine (site condition), a condition of an electrical grid to which the wind turbine 100 is connected (grid condition), an operational state of the wind turbine 100, and any combination thereof.
The detected environmental condition is selected from the group consisting of a wind velocity, a wind direction, an ambient temperature, a humidity level, and any combination thereof. The operational state of the wind turbine is selected from the group consisting of a defect-downtime, a low energy operation, a repair period, a maintenance interval, an inspection period, and any combination thereof. Furthermore, the site condition may include a wind shadow at a wind turbine which is arranged within a wind farm. Moreover, the grid condition may include at least a grid stability and/or a grid load.
At a moment in time, when data are exchanged by means of a data exchange operation, the wind turbine 100 is not operated. A data exchange method includes, at an individual wind turbine, the following steps which are performed while transferring the data (control data, software data, operation parameters, etc.) from an external server unit to the wind turbine controller 114. At first the wind turbine is shut down, e.g. by closing a brake of the rotor of the wind turbine, or by opening a clutch. Then software data are installed, and finally the wind turbine may be restarted.
Furthermore, it is possible that an operator manually controls a data exchange link 115 by means of the operator terminal 202 which is also connected to the central control unit 201. Different kinds of software data and control data may be exchanged via the data exchange link 115. A supervisory control and data acquisition (SCADA) may be used for monitoring, controlling and data acquisition of an individual wind turbine 100. SCADA software is related to central systems which may monitor an entire wind farm (see
If an update of software data fails, this information may be provided by the wind turbine controller 114, too. The conditions and moments in time, when such a software update is performed, will be described herein below with respect to
Data which are provided by the wind turbine 100 are selected from the group consisting of a defect-downtime, a low energy operational state, a repair period, a maintenance interval, an inspection period, and any combination thereof. The data which are transferred from the central control unit 201 to an individual wind turbine 100 via the wind turbine controller 114 may include data which are used for updating at least one software package of the wind turbine.
Furthermore, it is possible to provide automated software updates in dependence of a workload of an individual wind turbine 100. An automated software update may be independent from the state of other wind turbines or may be provided on the basis of an operational state of other wind turbines within a wind turbine farm.
The wind turbine controller 114 furthermore includes an operation parameter detection unit 302 adapted for detecting at least one operation parameter of the wind turbine 100.
The at least one detected operation parameter is selected from the group consisting of a detected environmental condition at the wind turbine 100, a site condition, a grid condition of an electrical grid, an operational state of the wind turbine, and any combination thereof. The detected operation parameter is transferred to a determination unit 303 which is adapted for determining, on the basis of the detected operation parameter, when and/or under which condition a data exchange link 115 between the wind turbine 100 and the data center 200 can be performed.
The data exchange is performed via the data input unit 305. Furthermore, the wind turbine controller 114 includes a data output unit 304 where data, which have been received from the data center 200, are output from the determination unit 303 to the wind turbine 100. A memory unit 301 is connected to the determination unit wherein the memory unit is adapted for storing previous operation parameters. By storing previous operation parameters, a history of values of operation parameters may be provided in order to find an appropriate moment in time for a software update or an exchange of control data between the data center 200 and the wind turbine 100.
The determination unit 303 is adapted for determining a moment in time which is appropriate for exchanging data. The determination may be based on at least one of a detected environmental condition at the wind turbine, wherein the detected environmental condition is selected from the group consisting of a wind velocity, a wind direction, an ambient temperature, a humidity level, and any combination thereof.
For example, if the wind velocity is measured, a low wind velocity lasting for a specified period may indicate that an appropriate moment of time for switching off the individual wind turbine 100 and for updating software data has been reached. As the determination 308 unit is operatively connected to the operation parameter detection unit 302, an appropriate moment in time for transferring data from the central server unit to the wind turbine may be efficiently provided.
Furthermore, a feedback of the status of the wind turbine 100 may be transferred from the wind turbine controller 114 to the data center 200. If more than one individual wind turbine 100 is connected to the data center 200 (see also
As mentioned above, an automated software update in dependence on external conditions like grid conditions, weather conditions (wind speed, wind direction, air temperature), site conditions like wind shadow occurring at a specific wind turbine 100 may be provided. The moment in time of such kind of software updating is determined by the determination unit 303 of the wind turbine controller 114.
In this way, an efficient operation of an individual wind turbine 100 or, if two or more wind turbines are connected to a data center 200, an efficient operation of at least two wind turbines 100-1, 100-2 may be provided. This kind of efficient operation is based on a reduction of AEP losses (AEP, Annual Energy Production). The updating of software data may be made on the basis of a grid condition which may include a grid stability and/or a grid load of an electrical grid to which the individual wind turbine 100 is connected. The central control unit 201 of the data center 200 may indicate an availability of updated software versions or operating system versions which may be provided for the individual wind turbine 100.
Further information which may be provided by the central control unit 201 is a priority of the update, i.e. an indication when a software update may be made at the latest. Using the determination unit 303 of the wind turbine controller 114, it is now possible to define a time slot for performing the update such that AEP losses are reduced. Using the procedure described above, the wind turbine controller 114 of an individual wind turbine 100 may perform automated software updates by selecting the individual wind turbine 100-1, 100-2, . . . 100-n (n being the number of wind turbines) using the determination unit 303.
The software is provided by the data center 200 or from an external source which can be a server or another wind turbine 100 (see
It is noted here, albeit only four wind turbines are shown in
In case of an arrangement as shown in
A time slot (moment in time) for a software update may be determined on the basis of at least one operational state of at least one second wind turbine arranged within the wind farm. A detection of an operational state of wind turbines 100 arranged within the wind farm may result in a specific software updating wherein the updating is carried out for a specified number of wind turbines at the same time resulting in a reduction of a network load. Wind turbines may provide information on currently installed software versions in order to provide and/or to maintain a database (software version overview). Furthermore, a time schedule may be provided for updating software data of all or of a part of the wind turbines 100-1, . . . , 100-4 arranged within the wind farm.
According to the method for downloading software data from a software download server and for installing the software data at a hardware component, costs and service time for updating data for an individual hardware component 404 or a wind turbine controller, respectively are reduced. Furthermore, AEP losses are reduced, because an appropriate moment in time may be chosen for updating the individual wind turbine software.
The network and operation parameters may depend on environmental conditions of the wind turbine, site conditions, grid conditions and an operational state of the wind turbine such that an efficient software and data transfer between the data center 200 and the wind turbine 100 can be provided.
The larger the number of wind turbines 100 arranged within a wind farm is, the larger the time reduction for installing software updates transfer is.
This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to practice the described subject-matter, including making and using any devices or systems and performing any incorporated methods. While various specific embodiments have been disclosed in the foregoing, those skilled in the art will recognize that the spirit and scope of the claims allows for equally effective modifications. Especially, mutually non-exclusive features of the embodiments described above may be combined with each other. The patentable scope is defined by the claims, and may include such modifications and other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal language of the claims.
