CN218386388U - Bipolar concentrated compact type offshore flexible direct current conversion station - Google Patents
Bipolar concentrated compact type offshore flexible direct current conversion station Download PDFInfo
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- CN218386388U CN218386388U CN202221641829.6U CN202221641829U CN218386388U CN 218386388 U CN218386388 U CN 218386388U CN 202221641829 U CN202221641829 U CN 202221641829U CN 218386388 U CN218386388 U CN 218386388U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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Abstract
The utility model discloses a bipolar compact marine gentle direct current conversion station of concentrating, include: the flexible direct current converter station adopts a double-layer platform structure, and the valve hall is arranged at the lower layer of the double-layer platform structure; the direct current field, the two coupling transformer chambers and the two gas insulation transformer chambers are arranged on the upper layer of the double-layer platform structure; the valve hall comprises flexible-straight converter valves of 6 bridge arms of the flexible-straight converter station; the direct current field comprises 6 bridge arm reactors; each connection transformer chamber comprises a connection transformer; each gas insulation transformer room comprises a set of gas insulation transformers corresponding to voltage. The utility model discloses a bipolar valve room and the scheme of arranging are concentrated in direct current field have cancelled the partition wall between the converter station bipolar, can reduce converter station platform size and weight, have reduced the engineering investment of marine converter station platform, have reduced the degree of difficulty of marine converter station platform transportation and installation. The connection between different power distribution device rooms in the converter station adopts a GIL pipeline mode, so that the arrangement of the platform is more compact.
Description
Technical Field
The utility model relates to a flexible direct current transmission technical engineering field of marine wind power, concretely relates to marine gentle direct current converter station of compact that bipolar was concentrated.
Background
The flexible direct current transmission technology is the most suitable technical route for transmitting the wind power at the sea in the middle and far seas at present, and has wide development and application prospects. The offshore converter station is one of main components of the whole sea wind soft and direct sending-out system, mainly comprises a soft and direct converter valve, a coupling transformer, a bridge arm reactor and alternating current and direct current switching equipment, and is a transfer station for transferring the sea wind power from the sea to the land.
In the prior art, a valve hall and a direct current field (including bridge arm reactors) are the largest components of the volume station ratio in an offshore converter station, and in the conventional offshore flexible direct current converter station, the valve hall and the direct current field are arranged in two rooms separated from each other according to the maximum in order to meet the requirement of the structural design of a platform due to the large size of the whole platform. With the continuous development of the offshore wind power flexible-direct-sending technology, the compact design scheme of main equipment such as flexible-direct converter valves and bridge arm reactors is continuously developed, the insulation matching scheme of a flexible-direct system is continuously optimized, and the requirement on the electrical live distance is also continuously reduced. Therefore, the problems that the converter station in the offshore converter station is huge in size, great in difficulty of construction, manufacture and transportation and not compact enough in platform arrangement are also needed to be solved urgently.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a marine gentle straight current conversion station of compact that bipolar is concentrated has been provided, has solved prior art, and the current conversion station volume is huge, and the degree of difficulty of construction, manufacturing and transportation is big, and the not compact problem of enough is arranged to the platform.
According to a first aspect, the embodiment of the utility model provides a marine gentle direct current conversion station of compact that bipolar is concentrated, gentle direct current conversion station adopts double-deck platform structure, include: valve hall, direct current field, two coupling transformer chambers, two gas insulation transformer chambers, wherein,
the valve hall is arranged at the lower layer of the double-layer platform structure;
the direct current field, the two coupling transformer chambers and the two gas insulation transformer chambers are arranged on the upper layer of the double-layer platform structure;
the valve hall comprises flexible direct current converter valves of 6 bridge arms of the flexible direct current converter station;
the direct current field comprises 6 bridge arm reactors;
each connection transformer chamber comprises a connection transformer;
each gas-insulated power transformation chamber comprises a set of gas-insulated power transformers corresponding to voltage.
The embodiment of the utility model provides a marine gentle direct current conversion station of compact that bipolar is concentrated adopts bipolar valve room and direct current field to concentrate the scheme of arranging, has cancelled the partition wall between the bipolar of current conversion station, can reduce current conversion station platform size and weight about 10%, has reduced the engineering investment of marine current conversion station platform, has reduced the degree of difficulty of marine current conversion station platform transportation and installation. The connection between different power distribution device rooms in the converter station adopts a GIL pipeline mode instead of adopting high-voltage cables, so that the arrangement of the platform is more compact. Heavier equipment such as a connecting transformer and a bridge arm reactor in the converter station are uniformly distributed on the upper layer of the platform, so that the hoisting maintenance of the related equipment from the top is facilitated. The whole layout of the electrical equipment in the converter station is symmetrically distributed, which is beneficial to the gravity center control of the platform and reduces the requirement on the structural design of the platform.
With reference to the first aspect, in a first embodiment of the first aspect, the two gas-insulated power transformation chambers are respectively: 330kV gas-insulated transformer room and 66kV gas-insulated transformer room.
With reference to the first aspect, in a second embodiment of the first aspect, the valve towers of the valve hall are arranged in a phase sequence in a preset manner.
With reference to the first aspect, in a third implementation manner of the first aspect, the bridge arm reactors in the dc field are arranged in a horizontal direction according to a phase sequence of a preset manner.
With reference to the first embodiment of the first aspect, in a fourth embodiment of the first aspect, the flexible direct current converter station further includes:
the valve hall is connected with the direct current field by a wall bushing;
the valve hall is connected with the 330kV gas insulated substation room by a GIL pipeline;
the two connection transformer chambers are respectively connected with the 330kV gas insulation transformer chamber by adopting GIL pipelines;
and the two coupling transformer chambers are respectively connected with the 66kV gas insulated transformer chamber by adopting GIL pipelines.
The embodiment of the utility model provides an offshore gentle direct current conversion station of compact that bipolar is concentrated adopts bipolar valve room and direct current field to concentrate the scheme of arranging, has cancelled the partition wall between the bipolar of current conversion station, can reduce current conversion station platform size and weight about 10%, has reduced the engineering investment of offshore current conversion station platform, has reduced the degree of difficulty of offshore current conversion station platform transportation and installation. The connection between different power distribution device rooms in the converter station adopts a GIL pipeline mode instead of adopting high-voltage cables, so that the arrangement of the platform is more compact. Heavier equipment such as a connecting transformer and a bridge arm reactor in the converter station are uniformly distributed on the upper layer of the platform, so that the hoisting maintenance of the related equipment from the top is facilitated. The whole layout of the electrical equipment in the converter station is symmetrically distributed, so that the gravity center control of the platform is facilitated, and the requirement on the structural design of the platform is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a cross-sectional view of a bipolar concentrated compact offshore flexible direct current converter station according to an embodiment of the present invention;
fig. 2 is a schematic layout of the lower level of another double deck platform structure of a bipolar concentrated compact offshore flexible direct current converter station according to an embodiment of the present invention;
fig. 3 is a schematic diagram of the upper layer arrangement of the double deck platform structure of another bipolar concentrated compact offshore flexible direct current converter station, in accordance with an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
The flexible direct current transmission technology is the most suitable technical route for transmitting the wind power at the sea in the middle and far seas at present, and has wide development and application prospects. The offshore converter station is one of main components of the whole sea wind soft and direct sending-out system, mainly comprises a soft and direct converter valve, a coupling transformer, a bridge arm reactor and alternating current and direct current switching equipment, and is a transfer station for transferring the sea wind power from the sea to the land. The offshore converter station is positioned on the sea, and the offshore converter station is large in size and difficult to construct, manufacture and transport, so that the size of the offshore converter station is reduced, the weight of the whole offshore converter station platform is reduced, the offshore converter station platform has remarkable economic benefits, and the offshore converter station platform is the most important subject in the design of the offshore converter station.
The valve hall and the direct current field (including a bridge arm reactor) are the components with the largest volume station ratio in the offshore converter station, and in the conventional offshore flexible direct current converter station, the valve hall and the direct current field are arranged according to two rooms which are separated greatly in order to meet the requirement of structural design of the platform due to the large size of the whole platform. In order to meet the requirement of electrical equipment on the live distance of the intermediate partition walls of the two poles, the whole size of the platform needs to be increased by 3-5 m, and the weight of the platform of the whole offshore converter station is increased greatly.
With the continuous development of the offshore wind power flexible-direct-sending technology, the compact design scheme of main equipment such as flexible-direct converter valves and bridge arm reactors is continuously developed, the insulation matching scheme of a flexible-direct system is continuously optimized, and the requirement on the electrical live distance is also continuously reduced. The sizes of the valve hall and the direct current field can be greatly reduced, and the converter valves and the bridge arm reactors of the two poles are respectively and intensively arranged in the same room, so that the requirement of the structural design of the converter station platform can be met.
Also provided in this embodiment is a bipolar concentrated compact offshore flexible direct current converter station, as used below, the term "module" may implement a combination of software and/or hardware for the intended function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
The utility model discloses an offshore gentle direct current conversion station of compact that bipolar is concentrated, as shown in fig. 1, gentle direct current conversion station adopts double-deck platform structure, include: the system comprises a valve hall, a direct current field, two coupling transformer chambers and two gas insulation transformer chambers, wherein the valve hall is arranged at the lower layer (b) of the double-layer platform structure; the direct current field, the two coupling transformer chambers and the two gas insulation transformer chambers are arranged on the upper layer (a) of the double-layer platform structure.
In particular, the valve hall (I) comprises the flexible-straight converter valves of 6 legs of the flexible-straight converter station; the direct current field (II) comprises 6 bridge arm reactors (2); each connection transformer chamber (III) comprises a connection transformer (3); each gas-insulated transformer room (V) and the gas-insulated transformer room not shown in the figure respectively include a set of gas-insulated transformer (5) corresponding to the voltage and a set of gas-insulated transformer room not shown in the figure.
It should be noted that the schematic diagram of the bipolar concentrated compact offshore flexible-direct current converter station in this embodiment is a cross-sectional view, so that only one of the orthographic projection directions of the two coupling transformer chambers and the two gas-insulated transformer chambers can be shown in this cross-sectional view, and the other is behind the corresponding component, which is not shown in the drawing of this embodiment.
According to the compact offshore flexible direct-current converter station with concentrated bipolar, the scheme that the bipolar valve hall and the direct-current field are arranged in a concentrated mode is adopted, the partition wall between the bipolar electrodes of the converter station is omitted, the size and the weight of the platform of the converter station can be reduced by about 10%, the engineering investment of the platform of the offshore converter station is reduced, and the difficulty in transportation and installation of the platform of the offshore converter station is reduced. The connection between different power distribution device rooms in the converter station adopts a GIL pipeline mode instead of adopting high-voltage cables, so that the arrangement of the platform is more compact. Heavier equipment such as a connecting transformer and a bridge arm reactor in the converter station are uniformly distributed on the upper layer of the platform, so that the hoisting maintenance of the related equipment from the top is facilitated. The whole layout of the electrical equipment in the converter station is symmetrically distributed, which is beneficial to the gravity center control of the platform and reduces the requirement on the structural design of the platform.
In particular, as shown in fig. 2, the valve hall (I) mainly contains the flexible straight converter valves (1) of all 6 legs in the converter station. The valve towers of the valve hall (I) in the embodiment are arranged according to ase:Sub>A phase sequence of ase:Sub>A preset mode, wherein the preset mode is ase:Sub>A phase sequence of 'A-B-C-C-B-A'.
The utility model also discloses a gentle direct current conversion station on the sea of compact that another bipolar is concentrated, as shown in fig. 3, two gas-insulated transformer rooms do respectively: 330kV gas insulated substation (IV) and 66kV gas insulated substation (V), namely 330kV GIS (IV) and 66kV GIS (V). It should be noted that, the present embodiment is only described by taking 330kV and 66kV as examples, and the specific voltage level of the ground needs to be set according to the voltage of the actual offshore flexible direct current converter station, which is not limited in this embodiment.
In practical application, each bridge arm reactor (2) in the direct current field (II) is arranged in the horizontal direction according to the phase sequence of ase:Sub>A preset mode, specifically, the preset mode in the embodiment is the phase sequence of 'A-B-C-C-B-A', that is, the direct current field (II) comprises 6 bridge arm reactors (2) of an upper bridge arm and ase:Sub>A lower bridge arm together, and the bridge arm reactors (2) are arranged in ase:Sub>A 'straight line' according to the phase sequence of 'A-B-C-C-B-A'.
Wherein, the valve hall (I) is connected with the direct current field (II) by a wall bushing; the valve hall (I) is connected with the 330kV gas insulated substation (IV) by a GIL pipeline; the two connection transformer chambers (III) are respectively connected with the 330kV gas insulation transformer chamber (IV) by adopting a GIL pipeline; the two connection transformer chambers (III) are respectively connected with a 66kV gas insulation transformer chamber (V) by adopting a GIL pipeline. Other parts for supporting the present embodiment are all in the conventional manner, and the present embodiment will not be described in detail. The utility model discloses arrange the valve room and the direct current field of the two poles of the earth respectively in same space, cancelled two valve rooms and two partition walls between the direct current field, reduced the size of marine current conversion station platform under the prerequisite that does not reduce engineering operational reliability, reduced marine current conversion station's engineering cost, improved the gentle economic nature that directly sees the engineering of sea wind.
According to the compact type offshore flexible direct-current converter station with centralized bipolar valves, the scheme that the bipolar valve hall and the direct-current field are arranged in a centralized mode is adopted, the partition wall between the bipolar valves of the converter station is omitted, the size and the weight of the platform of the converter station can be reduced by about 10%, the engineering investment of the platform of the offshore converter station is reduced, and the difficulty in transportation and installation of the platform of the offshore converter station is reduced. The connection between different power distribution device rooms in the converter station adopts a GIL pipeline mode instead of adopting high-voltage cables, so that the arrangement of the platform is more compact. Heavier equipment such as a connecting transformer and a bridge arm reactor in the converter station are uniformly distributed on the upper layer of the platform, so that the hoisting maintenance of the related equipment from the top is facilitated. The whole layout of the electrical equipment in the converter station is symmetrically distributed, which is beneficial to the gravity center control of the platform and reduces the requirement on the structural design of the platform.
Claims (5)
1. The utility model provides a bipolar compact marine gentle straight current conversion station that concentrates, its characterized in that, gentle straight current conversion station adopts double-deck platform structure, includes: valve hall, direct current field, two coupling transformer chambers, two gas insulation transformer chambers, wherein,
the valve hall is arranged at the lower layer of the double-layer platform structure;
the direct current field, the two coupling transformer chambers and the two gas insulation transformer chambers are arranged on the upper layer of the double-layer platform structure;
the valve hall comprises flexible direct current converter valves of 6 bridge arms of the flexible direct current converter station;
the direct current field comprises 6 bridge arm reactors;
each connection transformer chamber comprises a connection transformer;
each gas-insulated power transformation chamber comprises a set of gas-insulated power transformers corresponding to voltage.
2. The flexible direct current converter station according to claim 1, wherein the two gas insulated power transformers are each: 330kV gas-insulated transformer room and 66kV gas-insulated transformer room.
3. The flexible direct current converter station according to claim 1, characterized in that the valve towers of the valve hall are arranged in a phase sequence in a preset manner.
4. The station of claim 1, wherein each of the bridge arm reactors in the dc field is arranged in a horizontal direction in a phase sequence of a predetermined pattern.
5. The flexible direct current converter station according to claim 2, further comprising:
the valve hall is connected with the direct current field by a wall bushing;
the valve hall is connected with the 330kV gas insulated substation room by a GIL pipeline;
the two connection transformer chambers are respectively connected with the 330kV gas insulation transformer chamber by adopting GIL pipelines;
and the two coupling transformer chambers are respectively connected with the 66kV gas insulated transformer chamber by adopting GIL pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221641829.6U CN218386388U (en) | 2022-06-29 | 2022-06-29 | Bipolar concentrated compact type offshore flexible direct current conversion station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221641829.6U CN218386388U (en) | 2022-06-29 | 2022-06-29 | Bipolar concentrated compact type offshore flexible direct current conversion station |
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| Publication Number | Publication Date |
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| CN218386388U true CN218386388U (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221641829.6U Active CN218386388U (en) | 2022-06-29 | 2022-06-29 | Bipolar concentrated compact type offshore flexible direct current conversion station |
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- 2022-06-29 CN CN202221641829.6U patent/CN218386388U/en active Active
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