METHOD FOR PREPARING TARGET VALUES FOR A WIND FARM REGULATOR AS WELL AS WIND FARM SERVER AND SYSTEM FOR IT

Abstract

The invention relates to a method for sending target values to a wind farm regulator of a wind farm via a wind farm server, wherein the wind farm server has an input interface, and the input interface is used to receive target values for the wind farm regulator after a successful authentication by an access data record, wherein one of several predefined user identifiers is allocated in the wind farm server to each of several access data records, which correspond to predefined access data records, wherein the wind farm server is used to allocate the user identifier allocated to the access data record used for successful authentication before receiving the target value to a target value received from the input interface, and received target values with the allocated user identifier are output to the wind farm regulator. The invention further relates to a wind farm server and a system with a wind farm server.

Claims

1. A method comprising: receiving target values at an input interface of a wind farm server, wherein the input interface receives the target values after a successful authentication by an access data record, wherein one of a plurality of predefined user identifiers is allocated in the wind farm server to each of a plurality of access data records, which correspond to predefined access data records, wherein the wind farm server is used to allocate the user identifier allocated to the access data record used for successful authentication before receiving the target value to a target value received from the input interface, and outputting the target values with the allocated user identifier to a wind farm regulator of a wind farm.

2. The method according to claim 1, wherein: each of the plurality of access data records is allocated to a respective first set of access data records or a second set of access data records in the wind farm server, and a same user identifier of the plurality of predefined user identifiers is allocated to each of the access data records of the first set, and a respective individual user identifier of the plurality of predefined user identifiers is allocated to each of the access data records of the second set.

3. The method according to claim 1, wherein the wind farm server has an additional input interface, and the additional input interface receives additional target values for the wind farm regulator, and outputs the additional target values to the wind farm regulator, wherein different respective interface identifiers are allocated to the input interface and the additional input interface, and received target values with the interface identifier of the input interface and/or the allocated user identifier and received additional target values with the interface identifier of the additional input interface are output to the wind farm regulator.

4. The method according to claim 3, wherein the additional target values are sent to the wind farm regulator without a user ID.

5. The method according to claim 1, wherein a list with a plurality of entries is saved in the wind farm server, wherein a quantity of the plurality of entries corresponds to a quantity of the plurality of predefined user identifiers, and each of the predefined user identifiers with a respective one of the entries is allocated to precisely one target value group, wherein the target value group comprises several target values, and the target values of a first target value group correspond to different types of target values, and wherein received target values in the target value groups are entered according to their allocated user identification and type.

6. The method according to claim 1, wherein a sequence of entries is updated after a new target value has been received such that an entry with a newly received entry is saved as a last entry so that the sequence of entries are sorted by a time the target values were received such that a first entry comprises the target value received furthest in the past, and a last entry comprises the target value received most recently.

7. The method according to claim 1, wherein after a new target value has been received, the method comprising transmitting an entry with the new target value to the wind farm regulator.

8. The method according to claim 5, wherein all of the entries are transmitted to the wind farm regulator after a request has been received from the wind farm regulator, wherein the plurality of entries are sent in their sequence, so that an entry that comprises the target value received furthest in the past is transmitted first, and the last entry that comprises the target value received most recently is transmitted last.

9. The method according to claim 1, wherein each entry has an ID that indicates whether the entry was successfully received from the wind farm regulator, wherein the ID is updated as a function of a received or missing success message of the wind farm regulator after an entry has been sent.

10. A wind farm server configured to implement the method according to claim 1.

11. The wind farm server according to claim 10, wherein the input interface satisfies an OPC (open platform communications specification), including OPC XML-DA, open platform communications for the XML-based transmission of real-time values, or the input interface is an interface that satisfies an IEC 61400 standard, including IEC 61400-1:2019, and an additional input interface that satisfies a specification that differs from the OPC of the input interface.

12. A system comprising the wind farm server according to claim 10, and a wind farm regulator.

13. The system according to claim 12, wherein the wind farm regulator is configured to regulate a wind turbine of the wind farm as a function of the target values.

14. The system according to claim 12, wherein the wind farm regulator is configured to consider a sequence of times at which entries are received by the wind farm regulator when establishing the priority of a regulation of the wind turbines, such that an entry that comprises the target value lying furthest in the past is used first, and the last entry that comprises the target value received most recently is used last for regulation purposes.

15. The system according to claim 12, wherein the wind farm regulator is configured to allocate a priority to a target value or a target value group as a function of an interface identifier and/or a user identifier that is allocated to the target value or the target value group.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0037] Additional embodiments may be gleaned from the exemplary embodiments explained in more detail in the figures. Shown on:

[0038] FIG. 1 is a wind turbine,

[0039] FIG. 2 is a wind farm,

[0040] FIG. 3 is a system according to an exemplary embodiment, and

[0041] FIG. 4 is a list with entries.

DETAILED DESCRIPTION

[0042] FIG. 1 shows a schematic view of a wind turbine 100 according to the invention. The wind turbine 100 has a tower 102 and a nacelle 104 on the tower 102. An aerodynamic rotor 106 with three rotor blades 108 and a spinner 110 is provided on the nacelle 104. During operation of the wind turbine 100, the aerodynamic rotor 106 is made to rotate by the wind, and thus also turns an electrodynamic rotor or armature of a wind turbine generator, which is directly or indirectly coupled with the aerodynamic rotor 106. The electrical wind turbine generator is arranged in the nacelle 104, and generates electrical energy. The pitch angles of the rotor blades 108 can be changed by pitch motors on the rotor blade roots of the respective rotor blades 108.

[0043] FIG. 2 shows a wind farm 112 with an exemplary three wind turbines 100, which can be identical or different. As a consequence, the three wind turbines 100 are representative for basically any number of wind turbines 100 of a wind farm 112. The wind turbines 100 provide their power, specifically the generated current in particular, via an electrical farm network 114. The respectively generated current or power of the individual wind turbines 100 are here added together, and a transformer 116 is most often provided, which transforms up the voltage in the farm, so as to then feed it into the supply network 120 at the feed point 118, which is also generally referred to as PCC.

[0044] FIG. 3 shows a system 10 according to an exemplary embodiment of the invention. The system 10 comprises a wind farm server 12 and a wind farm regulator 13. The wind farm server 12 has an input interface 14, via which a remote computer 16 receives access to the wind farm server 12 by means of an internet connection 18. To this end, an access data record 20 is sent to the input interface 14 from the remote computer 16. For example, an access data record 20 comprises a username and a password. After received via the input interface 14, the access data record 20 is fed to a user verification unit 22. The access data record 20 is here compared with saved, predefined access data records 23. When a user has been successfully authenticated, the access data record 20 or part of the access data record 20 is transmitted to an allocation unit 24.

[0045] In the allocation unit 24, the access data record 20 or a part of the access data record 20 is allocated to a user identifier 26. For example, this takes place based upon a table 28. This means that, if an access data record 20 leads to a successful authentication, a user identifier 26 is determined in the allocation unit 24 as a function of this access data record 20. The access data records 20 with which a user can be successfully authenticated are here each allocated to either a first set 30 or a second set 32. If an access data record 20 is allocated to the second set 32, precisely one user identifier 26 is saved in the allocation unit 24 for each of the access data records 20. If an access data record 20 is allocated to the first set 30, all of the access data records 20 allocated to the first set 30 share the same user identifier 26.

[0046] After a successful authentication at the input interface 14, target values 34 for controlling or regulating the wind farm 112 or controlling or regulating the wind turbine 100 of the wind farm 112 can additionally be sent to the wind farm server 12 from the remote computer 16. After successful authentication, these target values 34 are fed to a list 36 together with the user identifier 26, and stored in the list 36. Entries 38 on the list 36 are then transmitted to the wind farm regulator 13, so as to there perform a regulation as a function of the entries 38. Based upon the entries 38, the wind farm regulator can allocate a priority for control or regulation to the received target values 34 as a function of the respectively allocated user identifier 26.

[0047] The wind farm server 12 further comprises an additional input interface 40, with which another remote computer 42 can be connected. After authentication, additional target values 44 can likewise be transmitted to the additional input interface 40 via the additional remote computer 42. These additional target values 44 are entered into an additional list 46 together with an interface identifier 48, e.g., PID. The additional entries 50 of the additional list 46 are likewise transmitted to the wind farm regulator 13 for controlling or regulating the wind turbines 100.

[0048] FIG. 4 shows the list 36 with its entries 38. Accordingly, an entry 38 is present in each line. The different user identifiers 26 in the respective entry 38 of the list 36 are made in the left column. In the adjacent column, several target values 34 are allocated to a user identifier 26 as target value groups 54 with each entry 38. Furthermore, an ID 56 indicating whether the respective entry 38 has already been successfully transmitted to the wind farm regulator 13 is provided in each entry 38 in the right column.

[0049] The additional list 46 is not shown, but according to another exemplary embodiment can look the same as an entry on the list 36, wherein the interface identifier 48 of the additional interface 40 is indicated instead of the user identifiers 26.

[0050] The various embodiments described above can be combined to provide further embodiments. These and other changes can be made to the embodiments in light of the above-detailed description. In general, in the following claims, the terms used should not be construed to limit the claims to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled. Accordingly, the claims are not limited by the disclosure.