CN111799661A - Converter station of modular offshore flexible direct current transmission system - Google Patents
Converter station of modular offshore flexible direct current transmission system Download PDFInfo
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- CN111799661A CN111799661A CN202010498963.4A CN202010498963A CN111799661A CN 111799661 A CN111799661 A CN 111799661A CN 202010498963 A CN202010498963 A CN 202010498963A CN 111799661 A CN111799661 A CN 111799661A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
- E04H5/04—Transformer houses; Substations or switchgear houses
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a modular offshore flexible direct current transmission system converter station, which comprises an offshore platform and a plurality of equipment modules arranged on the offshore platform; each equipment module is arranged in an independent closed metal box body and is installed on the offshore platform after being independently debugged. Based on the ideas of overall design, modular manufacturing and assembly, the equipment is modularly distinguished according to functions, the advantages of integration and standardization are exerted, and the construction efficiency of the converter station of the offshore flexible direct current transmission system is high. According to the invention, each equipment module finishes internal equipment installation, electrical connection and equipment debugging before equipment leaves a factory, so that the workload on a platform is greatly reduced, and the construction cost and period can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of offshore wind power generation, in particular to a modular converter station of an offshore flexible direct current transmission system.
Background
With the increasing expansion of wind power generation capacity, wind power generation is more and more connected to a power grid, and the grid-connected operation of wind power becomes the most effective mode for utilizing wind energy on a large scale. Along with the requirements of longer transmission distance and larger transmission capacity, the direct current power transmission can well make up the defects of alternating current power transmission and better adapt to the development requirements of offshore wind power.
At present, the flexible direct current transmission converter station is mainly applied to land engineering, is not limited by space and area, is loose in arrangement, does not limit the weight of equipment and house structures, and does not need integral hoisting. However, the offshore platform has a tight space, severe environmental conditions (moisture and salt fog), and the offshore converter station needs to be integrally hoisted, so the equipment selection, arrangement and structural design of the land converter station are not suitable for the application of the offshore platform, and the offshore platform has a very high cost, so that the offshore platform has a strict size requirement on the layout. At present, no engineering example of an offshore platform for the offshore wind power flexible direct current access system exists in China, no research on design of the offshore platform for the offshore wind power flexible direct current access system exists, and a structural form which is wide in application range, reliable in performance and convenient and fast to construct is not found.
Disclosure of Invention
In order to provide a converter station suitable for offshore operation, the invention provides a modular offshore flexible direct current transmission system converter station, which modularly distinguishes equipment according to functions, so that the offshore flexible direct current transmission system converter station is small in occupied area, safe, stable and convenient to install and debug.
In order to achieve the aim, the invention provides a modular offshore flexible direct current transmission system converter station, which comprises an offshore platform and a plurality of equipment modules arranged on the offshore platform; each equipment module is arranged in an independent closed metal box body and is installed on the offshore platform after being independently debugged.
Further, the device module includes:
the system comprises a rest room, a diesel oil storage tank, a transformer oil collecting tank, a spare part room, a main transformer room, a valve hall, an alternating current GIS room, a first storage battery room, a direct current field equipment room, a fire-fighting equipment room, a secondary control and protection equipment room, a diesel engine room, a power distribution room, a third storage battery room and a medium-voltage equipment room.
Furthermore, the metal box body meets the fireproof and explosion-proof requirements of the internal equipment module; the equipment module to be butted is provided with an external interface on the metal box body, and the external interface comprises a bridge hole, a hose connector, a wall bushing and an aviation socket.
Furthermore, the offshore platform is of a three-layer structure, a jacket structure is adopted as a pile foundation, and a helicopter apron and a crane are arranged at the top of the platform.
Further, the rest room, the diesel oil storage tank, the transformer oil collecting tank, the spare part room, a gathering area for gathering personnel, an alternating current cable hole formed in the top of the layer, a direct current cable hole formed in the bottom of the layer and life-saving equipment are arranged on the offshore platform layer by layer; the collecting area is arranged adjacent to the lifesaving equipment.
Further, the offshore platform is provided with the main transformer chamber, the valve hall, the alternating current GIS chamber, the first storage battery chamber, the direct current field equipment chamber, the fire-fighting equipment room and a second storage battery chamber in a second layer; a coupling transformer is arranged in the main transformer chamber; a supporting type converter valve is arranged in the valve hall; the alternating current GIS chamber is internally provided with gas insulated switch equipment; the storage battery in the first storage battery chamber is used as a backup power supply of the coupling transformer and the control protection equipment of the gas insulated switchgear; the direct current field equipment chamber is internally provided with a switch; fire-fighting equipment is arranged in the fire-fighting equipment room; the storage battery in the second storage battery chamber is a control protection device of the switch device in the support type converter valve direct current field device chamber and a backup power supply of the fire fighting device.
Furthermore, a secondary control and protection equipment room, a diesel engine room, a power distribution room, a third storage battery room and a medium-voltage equipment room are arranged on the offshore platform in three layers; secondary control and protection equipment is arranged between the secondary control and protection equipment, a diesel generator and accessories thereof are placed in the diesel engine room, and the power distribution room is provided with low-voltage power distribution switch equipment; the third battery chamber is provided with a storage battery; the medium-voltage equipment room is used for placing medium-voltage switchgear and substation power transformation equipment; the storage battery in the third storage battery chamber provides a backup power supply for the equipment in the three-layer secondary control and protection equipment room, the diesel engine room, the power distribution room and the medium-voltage equipment room.
Furthermore, hoisting areas are arranged on the second layer and the third layer of the offshore platform.
Further, the transmission of electrical energy comprises: the alternating current submarine cable transmits alternating current electric energy of the offshore wind power plant to the alternating current GIS room directly or through the offshore booster station, the alternating current electric energy enters the main transformer room through the cable, the alternating current electric energy is converted into direct current electric energy through the current conversion equipment in the valve hall, and the direct current electric energy is transmitted out through the direct current submarine cable after passing through the direct current field equipment in the direct current field equipment room.
Furthermore, the metal box body is provided with a movable door, and each equipment module independently processes internal illumination, heating ventilation, fire control and corrosion prevention.
The technical scheme of the invention has the following beneficial technical effects:
1) based on the ideas of overall design, modular manufacturing and assembly, the equipment is modularly distinguished according to functions, the advantages of integration and standardization are exerted, and the construction efficiency of the converter station of the offshore flexible direct current transmission system is high.
2) According to the invention, each equipment module finishes internal equipment installation, electrical connection and equipment debugging before equipment leaves a factory, so that the workload on a platform is greatly reduced, and the construction cost and period can be effectively reduced.
Drawings
Fig. 1 is a cross-sectional view of an electrical installation of a modular offshore flexible direct current transmission system converter station;
FIG. 2 is a layout diagram of a layer of a modular offshore flexible DC power transmission system converter station;
figure 3 is a two-level layout of a modular offshore flexible direct current transmission system converter station;
figure 4 is a three-level layout of a modular offshore flexible direct current transmission system converter station;
figure 5 top level layout of a modular offshore flexible direct current transmission system converter station.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1 to 5, the modular offshore flexible direct current transmission system converter station of the present invention includes an offshore platform and an equipment module disposed on the offshore platform. A jacket structure adopted by the offshore platform is used as a pile foundation, and a helicopter apron and a crane are arranged at the top of the platform. Each equipment module is arranged in an independent closed metal box body and is installed on the offshore platform after being independently debugged. The equipment module includes: the system comprises a rest room 11, a diesel oil storage tank 12, a transformer oil collection tank 13, a spare part room 14, a main transformer room 21, a valve hall 22, an alternating current GIS room 23, a first storage battery room 24, a direct current field equipment room 25, a fire-fighting equipment room 26, a first storage battery room 28, a secondary control and protection equipment room 31, a diesel engine room 32, a power distribution room 33, a third storage battery room 34 and a medium-voltage equipment room 35.
Furthermore, the metal box body meets the fireproof and explosion-proof requirements of the internal module; the equipment module in each metal box body can be independently manufactured, installed and debugged; an external interface is arranged between the butt joint modules and comprises a bridge hole, a hose connector, a wall bushing and an aviation socket. The metal box body is provided with a movable door, and each module independently solves the problems of internal illumination, internal decoration, heating ventilation, fire protection and corrosion prevention.
As shown in fig. 1, the offshore platform comprises a first layer 1, a second layer 2, a third layer 3 and a top 4, alternating current power of an offshore wind farm is transmitted to an alternating current GIS chamber 23 of an offshore converter station by an alternating current submarine cable 5 directly or through an offshore booster station, enters a main transformer chamber 4 through a cable, is converted into direct current through converter equipment in a valve hall 5, and the direct current is transmitted out of the offshore wind farm by a direct current submarine cable 6 through direct current field equipment in a direct current field equipment chamber 25. The medium-voltage switchgear is placed in a medium-voltage equipment area 35, the screen cabinets for protection, measurement and control, communication and the like in the converter station are placed in a secondary control and protection equipment area 31, and the station power system in the station is distributed by a power distribution room 33.
As shown in fig. 2, a rest room 11, a diesel oil storage tank 12, a transformer oil collection tank 13, a spare part room 14, a collection area 15, an ac cable opening 16, a dc cable opening 17, a staircase 18 and a life saving device 19 are arranged on the first floor of the converter station of the modular offshore flexible dc transmission system. The AC cable 5 passes through a cable hole at one side of the bottom of the first layer and enters the first layer, and is connected to the electrical equipment in the AC GIS room of the second layer through a cable bridge frame through an AC cable hole formed at the top of one side. The direct current submarine cable 6 enters the first layer from the second layer through the direct current cable opening 17 at the top of the other side, and penetrates out of the converter station of the flexible direct current transmission system through the cable hole at the bottom of the first layer at the other side. The collecting area 15 is for collecting persons and is arranged close to the life saving equipment 19. The rest room 11, the diesel oil storage tank 12, the transformer oil collecting tank 13 and the spare part room 14 are all independent modules.
As shown in fig. 3, a main transformer room 21, a valve hall 22, an ac GIS room 23, a first battery room 24, a dc field equipment room 25, a fire-fighting equipment room 26, a second battery room 28 and a hoisting area 27 are arranged on the second floor of the modular offshore flexible dc transmission system converter station. The main transformer room 21, the valve hall 22, the ac GIS room 23, the first battery room 24, the dc field equipment room 25, the fire-fighting equipment room 26, and the second battery room 28 are all separate modules. A coupling transformer is arranged in the main transformer chamber 21, a supporting type converter valve is arranged in the valve hall 22, and gas insulated switchgear is arranged in the alternating current GIS chamber 23. The battery in the battery chamber 24 serves as a backup power source for the control and protection equipment of the coupling transformer in the two-layer main transformer chamber 21 and the gas insulated switchgear in the ac GIS chamber 23. The converter transformer cooling method of the second battery chamber 28 as the support type converter valve in the second floor valve hall 22, the control protection device of the switchgear in the dc field equipment room 25, and the main transformer chamber 21 of the backup power supply of the fire fighting equipment may be water cooling or air cooling, and when air cooling is adopted, the heat dissipation device of the converter transformer is located outdoors, and the cooling method of the converter equipment in the valve hall 22 is water cooling. The direct current equipment in the direct current field equipment chamber 25 adopts direct current gas insulated switchgear, and the measuring unit is integrated in the direct current gas insulated switchgear. The hoisting area 27 is a planning area of a platform crane, and the crane is installed on a top platform from top to bottom.
The low-voltage side of the main transformer in the main transformer chamber 21 is connected with the switch cabinet by a pipeline bus or a cable, and the high-voltage side of the main transformer is connected with the valve hall 22 by a pipeline bus.
As shown in fig. 4, a secondary control and protection equipment room 31, a diesel engine room 32, a power distribution room 33, a storage battery room 34, a medium voltage equipment room 35 and a hoisting area 36 are arranged on the third layer of the converter station of the modular offshore flexible direct current transmission system. A secondary control and protection device is arranged in the secondary control and protection device room 31, a diesel generator and accessories thereof are placed in the diesel engine room 32, and a low-voltage distribution switch device is arranged in the distribution room 33; the third battery chamber 34 is provided with a battery; the medium-voltage equipment room 35 is used for placing medium-voltage switchgear and substation transformation equipment; the storage battery in the third storage battery chamber 34 provides backup power for the equipment in the three-layer secondary control and protection equipment room 31, the diesel engine chamber 32, the distribution chamber 33 and the medium-voltage equipment chamber 35. The secondary control and protection equipment room 31, the diesel engine room 32, the power distribution room 33, the third storage battery room 34 and the medium-voltage equipment room 35 are all independent modules. The hoisting area 36 is a planning area of the platform crane, and the crane is installed at the top layer from top to bottom. A platform. The positions of the main transformer chamber 21 and the alternating current GIS chamber 23 corresponding to the second layer at the bottom of the third layer are arranged in the maintenance holes, when the equipment in the two regions has problems and large-volume parts need to be replaced, the cover plates on the layer and the top layer are opened, and then a crane can be adopted to lift out the problem parts, so that replacement is realized. . And a cable rack is arranged between the medium-voltage equipment room 35 and the top of the guide pipe rack of the alternating-current GIS room 23, and the cable rack is used for installing and connecting cables of all modules.
As shown in fig. 5, a heating and ventilation outdoor unit 41, a hoisting area 42 and a helipad 43 are arranged on the top layer of the converter station of the modular offshore flexible direct current transmission system. The top bottom corresponds the position of the main transformer room 21 and the interchange GIS room 23 on two layers to setting up the access hole, when the equipment in these two regions goes wrong and needs to be changed the bulky part, opens the apron on two layers top and this layer and can adopt the hoist to hang out the problem part to realize changing. . The top bottom corresponds the position of diesel engine room 32 and sets up the access hole, opens the apron and can overhaul the diesel engine when needing to overhaul. The lifting area 42 is provided with a crane. A helipad 43 is mounted at one end of the roof, extending outwardly.
The independent modules of the modularized offshore flexible direct current transmission system converter station can be independently debugged, and each module is delivered out of a factory to complete procedures such as welding, coating, electrical equipment installation and debugging and is respectively transported to a field for installation. After the platform is folded, the platform is transported to the sea after the total joint adjustment is finished. The workload, the construction cost and the period on the platform can be greatly reduced.
In summary, the present invention relates to a modular converter station of an offshore flexible dc transmission system, comprising an offshore platform and a plurality of equipment modules arranged on the offshore platform; each equipment module is arranged in an independent closed metal box body and is installed on the offshore platform after being independently debugged. Based on the ideas of overall design, modular manufacturing and assembly, the equipment is modularly distinguished according to functions, the advantages of integration and standardization are exerted, and the construction efficiency of the converter station of the offshore flexible direct current transmission system is high. According to the invention, each equipment module finishes internal equipment installation, electrical connection and equipment debugging before equipment leaves a factory, so that the workload on a platform is greatly reduced, and the construction cost and period can be effectively reduced.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. A modular offshore flexible direct current transmission system converter station is characterized by comprising an offshore platform and a plurality of equipment modules arranged on the offshore platform; each equipment module is arranged in an independent closed metal box body and is installed on the offshore platform after being independently debugged.
2. The modular offshore flexible direct current transmission system converter station according to claim 1, characterized in that the equipment module comprises:
the device comprises a rest room (11), a diesel oil storage tank (12), a transformer oil collection tank (13), a spare part room (14), a main transformer room (21), a valve hall (22), an alternating current GIS room (23), a first storage battery room (24), a first storage battery room (28), a direct current field equipment room (25), a fire-fighting equipment room (26), a secondary control and protection equipment room (31), a diesel engine room (32), a distribution room (33), a third storage battery room (34) and a medium voltage equipment room (35).
3. The modular offshore flexible direct current transmission system converter station according to claim 1 or 2, wherein the metal box meets the fire and explosion protection requirements of internal equipment modules; the equipment module to be butted is provided with an external interface on the metal box body, and the external interface comprises a bridge hole, a hose connector, a wall bushing and an aviation socket.
4. The modular offshore flexible direct current transmission system converter station according to claim 1 or 2, characterized in that the offshore platform is a three-layer structure, a jacket structure is adopted as a pile foundation, and a helicopter apron and a crane are arranged on the top of the platform.
5. The modular offshore flexible direct current transmission system converter station according to claim 4, characterized in that the offshore platform arranges the rest room (11), the diesel storage tank (12), the transformer collection tank (13), the spare parts room (14), a collecting area (15) for collecting personnel, a layer of top-opened alternating current cable openings (16), a layer of bottom-opened direct current cable openings (17) and life saving equipment (19) layer by layer; the collecting area (15) is arranged adjacent to the life saving equipment (19).
6. Modular offshore flexible direct current transmission system converter station according to claim 5, characterized in that the offshore platform is two-level arranged with the main transformer room (21), the valve hall (22), the alternating current GIS room (23), the first battery room (24), the direct current field equipment room (25), the fire-fighting equipment room (26) and a second battery room (28); a coupling transformer is arranged in the main transformer chamber (21); a supporting type converter valve is arranged in the valve hall (22); a gas insulated switchgear is arranged in the alternating current GIS chamber (23); the accumulator in the first accumulator chamber (24) is used as a backup power source for the coupling transformer and the control protection equipment of the gas insulated switchgear; a switch is arranged in the direct current field equipment chamber (25); fire fighting equipment is arranged in the fire fighting equipment room (26); the storage battery in the second storage battery chamber (28) is a control protection device of the switch device in the DC field device chamber (25) of the supporting converter valve and a backup power supply of the fire fighting device.
7. The modular offshore flexible direct current transmission system converter station according to claim 6, characterized in that the offshore platform is provided with a secondary control and protection equipment room (31), a diesel room (32), a power distribution room (33), a third battery room (34) and a medium voltage equipment room (35) in three levels; secondary control and protection equipment is arranged in the secondary control and protection equipment room (31), a diesel generator and accessories thereof are placed in the diesel engine room (32), and low-voltage distribution switch equipment is arranged in the power distribution room (33); the third battery chamber (34) is provided with a battery; the medium-voltage equipment room (35) is used for placing medium-voltage switch equipment and substation transformation equipment; and the storage battery in the third storage battery chamber (34) provides a backup power supply for the equipment in the three-layer secondary control and protection equipment room (31), the diesel engine chamber (32), the power distribution chamber (33) and the medium-voltage equipment chamber (35).
8. The modular offshore flexible direct current transmission system converter station according to claim 7, wherein hoisting areas are arranged on the second layer and the third layer of the offshore platform, and the crane is installed on the top platform and hoisted from top to bottom.
9. The modular offshore flexible direct current transmission system converter station according to claim 7, characterized in that the transmission of electric energy comprises: alternating current sea cables (5) transmit alternating current electric energy of an offshore wind farm to an alternating current GIS room (23) directly or through an offshore booster station, the alternating current electric energy enters a main transformer room (21) through cables, the alternating current electric energy is converted into direct current electric energy through current conversion equipment in a valve hall (22), and the direct current electric energy is transmitted out through direct current sea cables (6) after passing through direct current field equipment in a direct current field equipment room (25).
10. The modular offshore flexible direct current transmission system converter station of claim 7, wherein the metal box is provided with a movable door, each equipment module handling internal lighting, heating ventilation, fire protection and corrosion protection independently.
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| CN202010498963.4A CN111799661B (en) | 2020-06-04 | 2020-06-04 | Converter station of modular offshore flexible direct current transmission system |
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| CN202010498963.4A CN111799661B (en) | 2020-06-04 | 2020-06-04 | Converter station of modular offshore flexible direct current transmission system |
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| CN111799661B CN111799661B (en) | 2022-05-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426910A (en) * | 2020-04-03 | 2020-07-17 | 南京南瑞继保电气有限公司 | Testing system and testing method for flexible direct current transmission converter station |
| CN113503069A (en) * | 2021-07-06 | 2021-10-15 | 中国能源建设集团广东省电力设计研究院有限公司 | Arrangement scheme of offshore booster station |
| CN114094616A (en) * | 2021-11-23 | 2022-02-25 | 南通振华重型装备制造有限公司 | High-voltage debugging power supply method for offshore flexible direct current converter station |
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