CN215990216U - Offshore booster station electrical system and offshore wind farm system - Google Patents
Offshore booster station electrical system and offshore wind farm system Download PDFInfo
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- CN215990216U CN215990216U CN202122308641.1U CN202122308641U CN215990216U CN 215990216 U CN215990216 U CN 215990216U CN 202122308641 U CN202122308641 U CN 202122308641U CN 215990216 U CN215990216 U CN 215990216U
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Abstract
The utility model belongs to the field of offshore wind power equipment, and provides an offshore booster station electrical system and an offshore wind power plant system. The electrical system of the offshore booster station comprises at least one offshore booster station, and each offshore booster station is provided with two main transformers; the low-voltage side of each main transformer is connected with the first power distribution device, and the high-voltage side of each main transformer is connected with the second power distribution device; the first power distribution device adopts single-bus sectional wiring, and is at least provided with two sections of buses; the first power distribution device is connected with a first parallel reactor, and the first parallel reactor is used for compensating charging power of an in-field submarine cable.
Description
Technical Field
The utility model belongs to the field of offshore wind power equipment, and particularly relates to an offshore booster station electrical system and an offshore wind power plant system.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the increasing scale of offshore wind farms, a single offshore wind farm will reach 1000MW or 2000MW in the future. At present, the scale of a conventional offshore booster station monomer is generally 300MW, in order to be matched with the capacity of a large-scale offshore wind farm, a plurality of offshore booster stations need to be built in the same wind farm, for example, an offshore wind farm with the capacity of 1500MW needs to be built, 5 offshore booster stations need to be built, and the inventor finds that the investment is increased on one hand, and in addition, the cost and the difficulty of offshore operation and maintenance are greatly increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems in the background art, the utility model provides an offshore booster station electrical system and an offshore wind farm system, wherein the offshore booster station electrical system is suitable for a large-scale offshore wind farm, the number of offshore booster stations in the large-scale offshore wind farm can be reduced, the platform construction cost and the offshore operation and maintenance workload are further reduced, and the wiring of the electrical system is simplified.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides an electrical system of offshore booster stations, which comprises at least one offshore booster station, wherein each offshore booster station is provided with two main transformers;
the low-voltage side of each main transformer is connected with the first power distribution device, and the high-voltage side of each main transformer is connected with the second power distribution device; the first power distribution device adopts single-bus sectional wiring, and is at least provided with two sections of buses; the first power distribution device is connected with a first parallel reactor, and the first parallel reactor is used for compensating charging power of an in-field submarine cable.
In one embodiment, the second power distribution device uses a line-transformer bank connection.
In one embodiment, the second power distribution device is connected to a second shunt reactor, which compensates for the outgoing submarine cable charging power.
In one embodiment, the voltage levels of the second power distribution device and the second shunt reactor are the same as the high-side voltage level of the main transformer.
As an embodiment, the capacity of each offshore booster station is not lower than 600 MW.
In one embodiment, the main transformer is a 66kV/220kV or 66kV/500kV transformer.
In one embodiment, the first power distribution device has a voltage level of 66 kV.
In one embodiment, the voltage level of the first parallel reactor is 66 kV.
In one embodiment, the second power distribution device has a voltage level of 220kV or 500 kV.
A second aspect of the utility model provides an offshore wind farm system comprising an offshore booster station electrical system as described above.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model relates to an electrical system of offshore booster stations, which comprises at least one offshore booster station, wherein each offshore booster station is provided with two main transformers, the low-voltage side of each main transformer is connected with a first power distribution device, the high-voltage side of each main transformer is connected with a second power distribution device, the first power distribution device adopts single bus sectional wiring, compared with the conventional alternating current offshore booster station, the capacity of gathering electric energy of the offshore booster station can be improved by more than 100%, the number of the offshore booster stations in the large-scale offshore wind farm is reduced by more than 50%, the large-scale offshore wind farm can be constructed by using less number of the offshore booster stations, accordingly, the platform construction cost and the offshore operation and maintenance workload are reduced, the wiring of an electrical system is simplified, and the fault rate of electrical equipment of the offshore booster station is reduced.
Advantages of additional aspects of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
FIG. 1 is a schematic structural diagram of an electrical system of an offshore booster station according to an embodiment of the utility model.
Detailed Description
The utility model is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example one
The embodiment provides an electrical system of an offshore booster station, which comprises at least one offshore booster station, wherein each offshore booster station is provided with two main transformers; the low-voltage side of each main transformer is connected with the first power distribution device, and the high-voltage side of each main transformer is connected with the second power distribution device; the first power distribution device adopts single-bus sectional wiring, and is at least provided with two sections of buses; the first power distribution device is connected with a first parallel reactor, and the first parallel reactor is used for compensating charging power of an in-field submarine cable. The structure is suitable for large-scale offshore wind power plants, compared with conventional alternating current offshore booster stations, the capacity of gathering electric energy of the offshore booster stations can be improved by more than 100%, the number of the offshore booster stations in the large-scale offshore wind power plants is reduced by more than 50%, the large-scale offshore wind power plants can be constructed by using less number of the offshore booster stations, accordingly, the platform construction cost and the offshore operation and maintenance workload are reduced, and the wiring of an electrical system is simplified, so that the fault rate of electrical equipment of the offshore booster stations is reduced.
It will be understood herein that the number of offshore booster stations can be set by one skilled in the art based on the actual scale requirements of the offshore booster station electrical system and the capacity of each offshore booster station.
The second power distribution device is connected with a second shunt reactor, and the second shunt reactor is used for compensating and sending out submarine cable charging power. The second power distribution device adopts a line-transformer bank connection.
Referring to fig. 1, each offshore booster station in this embodiment has a capacity of not less than 600 MW.
In the present embodiment, the main transformer is a 66kV/220kV or 66kV/500kV transformer.
The first power distribution device has a voltage level of 66 kV. The voltage class of the first parallel reactor is 66 kV.
In a specific implementation, the voltage levels of the second power distribution device and the second shunt reactor are the same as the high-side voltage level of the main transformer. Correspondingly, the voltage grades of the second power distribution device and the second shunt reactor are both 220kV or 500 kV.
It should be noted that, in other embodiments, the voltage levels of the low-voltage side and the high-voltage side of the main transformer may be specifically set by those skilled in the art according to actual situations, and then a main transformer with a matching model is selected.
To ensure better economics of offshore wind farms, in one or more embodiments, the first power distribution unit, the second power distribution unit, and the main transformer are also located within the offshore booster station.
To reduce the complexity of construction and improve boosting efficiency, in some embodiments, a step-up transformer is mounted inside the offshore wind turbine tower or inside the nacelle.
Example two
The present embodiment provides an offshore wind farm system comprising an offshore booster station electrical system as described above in connection with fig. 1.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An electric system of an offshore booster station is characterized by comprising at least one offshore booster station, wherein each offshore booster station is provided with two main transformers;
the low-voltage side of each main transformer is connected with the first power distribution device, and the high-voltage side of each main transformer is connected with the second power distribution device; the first power distribution device adopts single-bus sectional wiring, and is at least provided with two sections of buses; the first power distribution device is connected with a first parallel reactor, and the first parallel reactor is used for compensating charging power of an in-field submarine cable.
2. The electrical offshore booster station system of claim 1, wherein the second electrical distribution device employs line-transformer bank wiring.
3. An offshore booster station electrical system as recited in claim 1, wherein the second power distribution device is connected to a second shunt reactor, the second shunt reactor being configured to compensate for a delivered submarine cable charging power.
4. An offshore booster station electrical system as recited in claim 3, wherein the voltage level of the second power distribution device and the second shunt reactor is the same as the high side voltage level of the main transformer.
5. The offshore booster station electrical system of claim 1, wherein each offshore booster station has a capacity of no less than 600 MW.
6. The offshore booster station electrical system of claim 1, wherein the main transformer is a 66kV/220kV or 66kV/500kV transformer.
7. An offshore booster station electrical system as recited in claim 6, wherein the first electrical distribution device has a voltage level of 66 kV.
8. An offshore booster station electrical system as recited in claim 6, wherein the first parallel reactor has a voltage level of 66 kV.
9. An offshore booster station electrical system as set forth in claim 6 wherein the second electrical distribution device has a voltage rating of 220kV or 500 kV.
10. Offshore wind farm system, characterized in that it comprises an offshore booster station electrical system according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122308641.1U CN215990216U (en) | 2021-09-23 | 2021-09-23 | Offshore booster station electrical system and offshore wind farm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122308641.1U CN215990216U (en) | 2021-09-23 | 2021-09-23 | Offshore booster station electrical system and offshore wind farm system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215990216U true CN215990216U (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122308641.1U Active CN215990216U (en) | 2021-09-23 | 2021-09-23 | Offshore booster station electrical system and offshore wind farm system |
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| Country | Link |
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| CN (1) | CN215990216U (en) |
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2021
- 2021-09-23 CN CN202122308641.1U patent/CN215990216U/en active Active
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