阅读说明：本技术 一种500kV海上升压站 (500kV offshore booster station ) 是由 陈永延 张振 汤翔 赵陆尧 徐晓燕 陆莹 于 2021-06-18 设计创作，主要内容包括：本发明涉及海上风力发电技术领域,公开了一种500kV海上升压站,包括自下而上依次设置的一层甲板、二层甲板、三层甲板和顶层甲板,所述一层甲板设置有用于将海缆引至所述二层甲板的海缆桥架,所述二层甲板设置有高压配电室、中压配电室、主变压器室、电抗器室、电气二次设备间和散热设备室,所述三层甲板设置有低压配电室,且所述低压配电室设置于所述电气二次设备间的上方,所述高压配电室、所述中压配电室、所述主变压器室和所述电抗器室均穿过所述三层甲板延伸至所述顶层甲板的下表面。本发明布置合理、紧凑,可以满足500kV的送出电压等级,从而提高了送出的电压等级,增大了单回海底电缆的输送容量。(The invention relates to the technical field of offshore wind power generation, and discloses a 500kV offshore booster station which comprises a first deck, a second deck, a third deck and a top deck, wherein the first deck, the second deck, the third deck and the top deck are sequentially arranged from bottom to top, a submarine cable bridge for guiding a submarine cable to the second deck is arranged on the first deck, a high-voltage distribution room, a medium-voltage distribution room, a main transformer room, a reactor room, an electrical secondary equipment room and a heat dissipation equipment room are arranged on the second deck, a low-voltage distribution room is arranged on the third deck, the low-voltage distribution room is arranged above the electrical secondary equipment room, and the high-voltage distribution room, the medium-voltage distribution room, the main transformer room and the reactor room all penetrate through the third deck and extend to the lower surface of the top deck. The invention has reasonable and compact arrangement, and can meet the sending voltage grade of 500kV, thereby improving the sending voltage grade and increasing the transmission capacity of the single-circuit submarine cable.)

1. The utility model provides a 500kV offshore booster station, its characterized in that includes one deck, double deck, three-layer deck and the top layer deck that sets gradually from bottom to top, the one deck is provided with and is used for leading the submarine cable to the submarine cable crane span structure of double deck, the double deck is provided with high-voltage distribution room, medium-voltage distribution room, main transformer room, reactor room, electric secondary equipment room and heat dissipation equipment room, the three-layer deck is provided with the low-voltage distribution room, just the low-voltage distribution room set up in top between electric secondary equipment, the high-voltage distribution room the medium-voltage distribution room the main transformer room with the reactor room all passes the three-layer deck extends to the lower surface of top layer.

2. The 500kV offshore booster station according to claim 1, wherein the main transformer chambers comprise a first main transformer chamber and a second main transformer chamber, the medium voltage distribution chambers comprise a first medium voltage distribution chamber and a second medium voltage distribution chamber, the first main transformer chamber, the second main transformer chamber, the high voltage distribution chamber and the reactor chamber are disposed in a middle portion of the second deck, the first medium voltage distribution chamber and the second medium voltage distribution chamber are disposed on a left side of the second deck, the electrical secondary equipment chamber is disposed on a right side of the second deck, and the heat dissipation equipment chambers are disposed on a front side and a rear side of the second deck.

3. The 500kV offshore booster station according to claim 2, wherein a fire equipment room is further arranged on the second deck, and the fire equipment room is arranged on the right side of the second deck and is located on the rear side of the electrical secondary equipment room.

4. The 500kV offshore booster station according to claim 1, wherein an oil tank room, a storage room, a communication equipment room and an escape equipment room are further arranged on the one deck, the submarine cable bridge is arranged below a high-voltage distribution room, the main transformer room and the reactor room, the storage room and the communication equipment room are arranged below the electrical secondary equipment room, the oil tank room is arranged below the heat dissipation equipment room, and the escape equipment room is arranged below the medium-voltage distribution room.

5. The 500kV offshore booster station according to claim 1, wherein an emergency power distribution room, a diesel engine room and a heating and ventilation machine room are further arranged on the three-layer deck, and the diesel engine room, the emergency power distribution room, the low-voltage power distribution room and the heating and ventilation machine room are sequentially arranged on one side of the three-layer deck from back to front.

6. The 500kV offshore booster station according to claim 5, wherein the sum of the cross-sectional areas of the low-voltage distribution room and the heating and ventilation machine room is equal to the cross-sectional area of the electric secondary equipment room.

7. The 500kV offshore booster station according to claim 1, wherein a hoisting device is installed on the top deck, and the top deck is further provided with maintenance cover plates corresponding to the high-voltage distribution room, the medium-voltage distribution room, the main transformer room and the reactor room, respectively, and the hoisting range of the hoisting device can cover the hoisting areas of the maintenance cover plates and the offshore booster station.

8. The 500kV offshore booster station according to claim 7, wherein an antenna device is further arranged on the top deck, and the antenna device is arranged outside the hoisting range of the hoisting device.

9. The 500kV offshore booster station according to claim 1, further comprising at least one stair disposed outside the first deck, the second deck, the third deck, and the top deck and communicating from the first deck to the top deck.

10. The 500kV offshore booster station according to claim 1, wherein a distance between the first deck and the second deck is 8.5m, a distance between the second deck and the third deck is 7m, and a distance between the third deck and the top deck is 5 m.

Technical Field

The invention relates to the technical field of offshore wind power generation, in particular to a 500kV offshore booster station.

Background

Wind energy is a renewable energy source, has the advantages of large storage capacity, environmental friendliness, safety, flexibility, low power generation cost, simplicity in operation and maintenance, various power generation modes and the like, and is receiving more and more attention. In recent years, offshore wind power gradually becomes a research hotspot due to the fact that offshore wind energy resources are high in density and relatively stable, and enters a large-scale development stage. Compared with onshore wind power, offshore wind power also has the following advantages: the offshore wind speed is higher than the onshore wind speed, the wind resource is rich, the sea surface roughness is small, the wind energy quality is high, the wind shear is small, and a high tower is not needed; the turbulence intensity of the offshore wind is small, and the offshore wind generally has a stable leading direction, so that the unit runs stably and has long service life; the capacity of the offshore wind power single machine can be greatly improved, and due to the fact that the noise limit is small, the energy output is large, and the annual utilization hours are higher; the unit is far away from the coast, and the visual influence is small; the negative impact on the environment is small; does not occupy valuable land resources on land and the like. China is rich in offshore wind energy resources, the developed wind energy resources are about 750GW, which is 3 times of the land wind energy resources, and the developed wind energy resources are mainly distributed in coastal areas with developed economy, stronger power grid structures and lack of conventional energy sources. By 3 months in 2019, the approved offshore wind capacity exceeds 53GW, the grid-connected capacity is 4.11GW, and the third global place is ranked.

In order to reduce the construction investment of offshore wind power plants as much as possible, the selection of the number and the position of the offshore booster stations and the level of the output voltage is very important. At present, the capacity and the sending voltage grade of an offshore booster station are respectively 300-400 MW and 220kV, and the wiring mode generally aims atThe 220kV offshore wind power is sent out, the transmission capacity of the 220kV submarine cable is limited, and the single-return diameter is 3 multiplied by 1000mm²The 127/220kV submarine photoelectric composite cable can only transmit about 300MW, and then an offshore wind power plant with the capacity of 600MW and above needs to transmit by adopting more than three 220kV submarine cables. For a long-distance and large-capacity offshore wind farm, the economic cost is greatly improved.

Disclosure of Invention

In view of the above problems, the present invention is to provide a 500kV offshore booster station to increase the voltage level of the transmitted voltage and increase the transmission capacity of the single-circuit submarine cable, thereby solving the problem of high economic cost due to the limitation of the transmission capacity of 220kV submarine cable in the offshore wind farm with long distance and large capacity.

In order to achieve the purpose, the invention adopts the following technical scheme:

the 500kV offshore booster station comprises a first deck, a second deck, a third deck and a top deck which are sequentially arranged from bottom to top, wherein the first deck is provided with a submarine cable bridge for guiding submarine cables to the second deck, the second deck is provided with a high-voltage distribution room, a medium-voltage distribution room, a main transformer room, a reactor room, an electrical secondary equipment room and a heat dissipation equipment room, the third deck is provided with a low-voltage distribution room, the low-voltage distribution room is arranged above the electrical secondary equipment room, and the high-voltage distribution room, the medium-voltage distribution room, the main transformer room and the reactor room all penetrate through the third deck and extend to the lower surface of the top deck.

Preferably, the main transformer room includes first main transformer room and second main transformer room, the medium voltage distribution room includes first medium voltage distribution room and second medium voltage distribution room, first main transformer room the second main transformer room the high voltage distribution room with the reactor room set up in the middle part of second floor deck, first medium voltage distribution room with the second medium voltage distribution room set up in the left side of second floor deck, electric secondary equipment room set up in the right side of second floor deck, the heat dissipation equipment room set up in the front side and the rear side of second floor deck.

Preferably, a fire-fighting equipment room is further arranged on the second-layer deck, and the fire-fighting equipment room is arranged on the right side of the second-layer deck and is located on the rear side of the electric secondary equipment room.

Preferably, an oil tank chamber, a power storage chamber, a communication equipment room and an escape equipment room are further arranged on the deck, the submarine cable bridge is arranged below the high-voltage distribution room, the main transformer chamber and the reactor chamber, the power storage chamber and the communication equipment room are arranged below the electrical secondary equipment room, the oil tank chamber is arranged below the heat dissipation equipment room, and the escape equipment room is arranged below the medium-voltage distribution room.

Preferably, the three-layer deck is further provided with an emergency power distribution room, a diesel engine room and a heating and ventilation machine room, wherein the diesel engine room, the emergency power distribution room, the low-voltage power distribution room and the heating and ventilation machine room are arranged on one side of the three-layer deck from back to front in sequence.

Preferably, the sum of the cross-sectional areas of the low-voltage distribution room and the heating and ventilation machine room is equal to the cross-sectional area of the electrical secondary equipment room.

Preferably, the top deck is provided with hoisting equipment, the top deck is also provided with overhaul cover plates corresponding to the high-voltage distribution chamber, the medium-voltage distribution chamber, the main transformer chamber and the reactor chamber, and the hoisting range of the hoisting equipment can cover the hoisting areas of the overhaul cover plates and the offshore booster station.

Preferably, the top deck is further provided with an antenna device, and the antenna device is arranged outside the hoisting range of the hoisting device.

Preferably, the offshore booster station further comprises at least one stair, and the stair is arranged on the outer sides of the first-layer deck, the second-layer deck, the third-layer deck and the top-layer deck and communicated to the top-layer deck from the first-layer deck.

Preferably, the distance between the first-layer deck plate and the second-layer deck plate is 8.5m, the distance between the second-layer deck plate and the third-layer deck plate is 7m, and the distance between the third-layer deck plate and the top-layer deck plate is 5 m.

Compared with the prior art, the 500kV offshore booster station has the beneficial effects that:

the 500kV offshore booster station provided by the embodiment of the invention is provided with four layers of decks, facilities on each layer of deck are optimally arranged, wherein a high-voltage distribution room, a medium-voltage distribution room, a main transformer room and a reactor room all penetrate through the three layers of decks and extend to the lower surface of the top deck, and the corresponding equipment volume and layer height requirements can meet the 500kV output voltage level, so that the output voltage level is improved, the transmission capacity of a single-circuit submarine cable is increased, the transmission capacity is prevented from being limited by the transmission capacity of a 220kV submarine cable, the 500kV offshore booster station is particularly suitable for a long-distance and large-capacity offshore wind power plant, and the economic cost is reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a 500kV offshore booster station according to an embodiment of the invention;

FIG. 2 is a schematic layout of a one-deck in an embodiment of the present invention;

FIG. 3 is a schematic layout of a two-layer deck according to an embodiment of the present invention;

FIG. 4 is a schematic layout of a three-deck according to an embodiment of the present invention;

FIG. 5 is a schematic layout of a top deck in an embodiment of the present invention;

in the figure, 10, one deck; 20. a second deck; 201. a corridor; 202. a first hanging platform; 30. three layers of decks; 301. a second article-lifting platform; 40. a top deck; 50. a staircase;

11. a sea cable bridge; 111. a submarine cable protection pipe; 12. an oil tank chamber; 121. an emergency tank room; 122. a diesel tank compartment; 13. an electricity storage chamber; 14. communication equipment; 15. an escape equipment room; 151. an escape apparatus; 152. an escape gathering place; 16. a sea cable; 161. a high-pressure sea cable; 162. medium voltage submarine cables; 17. a domestic water pump house; 18. a hoisting device; 19. a temporary rest room; 191. a sewage treatment chamber;

21. a high voltage distribution room; 211. a high voltage power distribution device; 22. a first medium voltage distribution room; 221. a first medium voltage distribution device; 222. a first control cabinet; 23. a second medium voltage distribution room; 231. a second medium voltage distribution device; 232. a second control cabinet; 24. first main transformer chamber a first main transformer chamber 24; 241. a first main transformer; 25. second main transformer chamber 25; 251. a second main transformer; 26. a reactor chamber; 261. a reactor; 27. an electric secondary equipment room; 271. a secondary disk cabinet; 28. a heat-dissipating equipment chamber; 281. a heat dissipating device; 29. a fire-fighting equipment room; 291. a high pressure water mist device; 292. a water tank;

31. a low voltage distribution room; 311. a low voltage power distribution device; 32. an emergency power distribution room; 321. an emergency power distribution device; 33. a diesel engine room; 331. a diesel generator set; 332. an oil tank chamber; 34. a heating and ventilation machine room; 341. a dehumidifier;

41. hoisting equipment; 411. hoisting range; 42. an antenna device; 43. a first medium voltage distribution device access panel; 44. a second medium voltage distribution unit access panel; 45. a first main transformer overhaul cover plate; 46. a second main transformer overhauling cover plate; 47. a reactor overhaul cover plate; 48. the high-voltage distribution device overhauls the cover plate; 49. diesel generating set overhauls apron.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

It should be noted that "front" in the present invention refers to the lower side shown in fig. 2 to 5, "rear" refers to the upper side shown in fig. 2 to 5, "left" refers to the left side shown in fig. 2 to 5, and "right" refers to the right side shown in fig. 2 to 5.

As shown in fig. 1, a 500kV offshore booster station according to an embodiment of the present invention includes a first deck 10, a second deck 20, a third deck 30 and a top deck 40, which are sequentially disposed from bottom to top, wherein the first deck 10 is provided with a submarine cable bridge 11 for guiding a submarine cable 16 to the second deck 20, the second deck 20 is provided with a high voltage distribution room 21, a medium voltage distribution room, a main transformer room, a reactor room 26, an electrical secondary equipment room 27 and a heat dissipation equipment room 28, the third deck 30 is provided with a low voltage distribution room 31, the low voltage distribution room 31 is disposed above the electrical secondary equipment room 27, and the high voltage distribution room 21, the medium voltage distribution room, the main transformer room and the reactor room 26 all extend to a lower surface of the top deck 40 through the third deck 30, so that the high voltage distribution room 21, the medium voltage distribution room, and the reactor room 26 extend to a lower surface of the top deck 40, so that the high voltage distribution room 21, the medium voltage distribution room, and the reactor room are disposed above the top deck 40, The equipment volume and floor height requirements in the main transformer chamber and the reactor chamber 26 can both meet the 500kV outgoing voltage level, thereby improving the outgoing voltage level and increasing the transmission capacity of the single-circuit submarine cable.

The arrangement of each deck is described below separately, as shown in fig. 2-5, with transverse axes for ease of descriptionTransverse shaftTransverse shaftTransverse shaftAnd a transverse axisThe deck boards of each layer are divided transversely, and the deck boards of each layer are divided longitudinally by a longitudinal axis I, a longitudinal axis II 1, a longitudinal axis II 3 and a longitudinal axis III. It should be noted that the distribution positions of the transverse axis and the longitudinal axis of each deck are completely the same, wherein the longitudinal axis (2) is the middle axis of each deck, the distance between the longitudinal axis (i) and the longitudinal axis (0) is equal to the distance between the longitudinal axis (iv) and the longitudinal axis (v), and the distance between the longitudinal axis (ii) and the longitudinal axis (iii) is equal to the distance between the longitudinal axis (iii) and the longitudinal axis (iv).

As shown in fig. 2, an oil tank room 12, a storage room 13, a communication equipment room 14 and an escape equipment room 15 are further arranged on the one-layer deck 10The submarine cable bridge 11 is arranged below the high-voltage distribution room 21, the main transformer room and the reactor room 26, and the submarine cable bridge 11 comprises a high-medium voltage cable bridge and a control cable bridge for a high-medium voltage distribution device, wherein the high-medium voltage cable bridge is respectively used for arranging a high-voltage submarine cable 161 and a medium-voltage submarine cable 162, so that the submarine cable 16 is led up from the seabed to be connected to electrical equipment of the second-layer deck 20; the electric storage room 13 and the communication equipment room 14 are arranged below the electric secondary equipment room 27, wherein a storage battery is arranged in the electric storage room 13 to ensure the normal work of important loads when the offshore booster station loses a normal power supply, and the communication equipment is used for ensuring the communication between the offshore booster station and the land; the oil tank room 12 is disposed below the heat dissipation equipment room 28, specifically, at the rear side of the one-deck 10, and the escape equipment room 15 is disposed below the medium-voltage distribution room. Specifically, the tank room 12 includes an emergency tank room 121 and a diesel tank room 122, the oil tank in the emergency tank room 121 is used for collecting and storing oil when the main transformer and the reactor 261 leak oil in an accident, and the oil tank in the diesel tank room 122 is used for ensuring the operation time of the diesel generator set 331. The storage chambers 13 are provided in two, and the communication equipment room 14 is provided in two, which are arranged in this order from the rear. The escape equipment room 15 is provided with escape equipment 151, such as lifeboats and the like, for evacuation and escape of people; the medium voltage distribution room is arranged above the area where the escape equipment room 15 is located, and the medium voltage submarine cable 162 is led into the medium voltage distribution device after being led to one layer, so that the escape equipment room 15 arranged in the area can not interfere with the upward leading-in of the medium voltage submarine cable 162. Since the floor height required for the electricity storage room 13 and the communication equipment room 14 is small, in the present embodiment, a temporary rest room 19 and a sewage treatment room 191 are further provided below the electricity storage room 13 and the communication equipment room 14, wherein the temporary rest room 19 is used for resting of workers, and the sewage treatment room is used for treating sewage. In this embodiment, the submarine cable bridge 11 is disposed at the middle position of the first deck 10, specifically, the horizontal shaft-transverse axisAnd a crossing region between the longitudinal axis (c) and the longitudinal axis (d), in which a plurality of submarine cable protection tubes 111 for protecting submarine cables are disposed at intervals along the periphery of the region. Further, a domestic water pump room 17 is arranged in the middle of the first deck 10 to provide domestic water, and is specifically arranged on the transverse shaft-transverse axisAnd the crossing area between the longitudinal axis (c) -the longitudinal axis (c). The tank room 12 is arranged at the rear side of the one-deck 10, in particular at the transverse axis-transverse axisAnd the crossing area between the longitudinal axis (c) -the longitudinal axis (d), the emergency tank room 121 and the diesel tank room 122 are sequentially arranged from left to right. The escape equipment room 15 is arranged at the left side of the first deck 10, particularly at the transverse axis-transverse axisAnd a crossing region between the longitudinal axis (i) -the longitudinal axis (ii), the escape apparatus 151 being disposed at the lateral axis-transverse axisAnd a cross region between the longitudinal axis (r) -the longitudinal axis (r), and in the transverse axis-transverse axisAnd the crossing area between the longitudinal axis (r) and the longitudinal axis (c) is provided with an escape collecting part 152, and the escape collecting part 152 is close to the stairs 50 at the outer side of the deck 10 at one layer. The electric storage room 13 and the communication equipment room are arranged on the right side of the one-layer deck 10, specifically on the transverse axis-transverse axisAnd a crossing region between the longitudinal axis (r) -the longitudinal axis (r), in which the electric storage room 13 and the communication equipment room are disposed in order from the rear side to the front side, and in which the lower temporary lounge room 19 and the sewage treatment room 191 are disposed in order from the rear side to the front side. In this embodiment, a lifting device 18 is provided on each of the front left side and the rear right side of the one-deck 10. It should be noted that, in this embodiment, a hoisting space is reserved on the right rear side of the first deck 10.

In the embodiment, the submarine cable bridge 11 is arranged in the middle of the first deck 10, so that the space requirement is large, only the domestic water pump room 17 is arranged in the middle, and the oil tank room 12, the electric storage room 13, the communication equipment room 14 and the escape equipment room 15 are arranged in the area without the bridge, so that the space is fully utilized, and the arrangement is compact.

As shown in fig. 3, the main transformer chambers include a first main transformer chamber 24 and a second main transformer chamber 25, a first main transformer 241 is disposed in the first main transformer chamber 24, a second main transformer 251 is disposed in the second main transformer chamber 25, and the main transformer chambers are independently disposed in two regions, so that mutual influence can be avoided, and the reliability of system operation can be improved by physical separation; the medium voltage distribution room comprises a first medium voltage distribution room 22 and a second medium voltage distribution room 23, a first medium voltage distribution device 221 and a first control cabinet 222 for controlling the first medium voltage distribution device 221 are arranged in the first medium voltage distribution room 22, and a second medium voltage distribution device 231 and a second medium voltage distribution device are arranged in the second medium voltage distribution room 23231 and a second control cabinet 232. The medium-voltage distribution room is divided into two areas to be independently arranged, so that mutual influence can be avoided, and the reliability of system operation is improved by physical separation. Since the first main transformer 241, the second main transformer 251, the high voltage distribution device 211, the reactor 261 and other rooms are large in area and heavy in weight, the first main transformer chamber 24, the second main transformer chamber 25, the high voltage distribution chamber 21 and the reactor chamber 26 are disposed in the middle of the two-layer deck 20. Specifically, the first main transformer chamber 24 is disposed on the lateral axis-transverse axisAnd a crossing region between the longitudinal axis (c) and the longitudinal axis (c), the second main transformer chamber 25 being disposed on the transverse axis-transverse axisAnd a crossing region between the longitudinal axis and the longitudinal axis, the high voltage distribution chamber 21 being disposed on the transverse axis-transverse axisAnd a crossing region between the longitudinal axis (c) and the longitudinal axis (d), a high-voltage distribution device (211) is disposed in the high-voltage distribution chamber (21), and a reactor chamber (26) is disposed in the transverse axis-transverse axisAnd a cross region between the longitudinal axis (c) -the longitudinal axis (d), and a reactor 261 is provided in the reactor chamber 26. Wherein, the first isA gap is provided between the main transformer chamber 24 and the second main transformer chamber 25, and a gap is provided between the high-voltage distribution chamber 21 and the reactor chamber 26.

The first and second medium voltage distribution rooms 22 and 23 are disposed at the left side of the second deck 20, and the first and second medium voltage distribution rooms 22 and 23 are sequentially disposed from front to back. In particular, the first medium-voltage distribution chamber 22 is arranged on a transverse axis-transverse axisAnd a crossing region between the longitudinal axis (i) -the longitudinal axis (ii), the second medium voltage distribution room 23 being disposed on the transverse axis-transverse axisAnd an intersection area between the longitudinal axis (r) -the longitudinal axis (r), with a gap between the first medium voltage distribution room 22 and the second medium voltage distribution room 23. The electrical secondary equipment room 27 is arranged on the right side of the two-layer deck 20, in particular on a transverse axis-transverse axisAnd a cross region between the longitudinal axis (r) -the longitudinal axis (r), the electrical secondary equipment room 27 is provided with a plurality of secondary disk cabinets 271 for placing equipment, and the plurality of secondary disk cabinets 271 are arranged at intervals relatively. The heat dissipation device chambers 28 are disposed at the front and rear sides of the second deck 20, and corresponding heat dissipation devices 281 are disposed in the heat dissipation device chambers 28. In particular, one of the heat sink chambers 28 is disposed on the transverse axis-transverse axisAnd a crossing region between the longitudinal axis and the longitudinal axis, and another heat radiating equipment chamber 28 is provided on the transverse axis-transverse axisAnd a crossing region between the longitudinal axis and the longitudinal axis, and a further heat radiating equipment chamber 28 is provided on the transverse axis-transverse axisAnd the crossing area between the longitudinal axis (c) -the longitudinal axis (c).

Further, still be provided with fire-fighting equipment room 29 on the second deck 20, fire-fighting equipment room 29 set up in the right side of second deck 20, and be located the rear side of electric secondary equipment room 27 is provided with fire-fighting equipment and water tank 292 in the fire-fighting equipment room 29, and wherein, fire-fighting equipment specifically is high-pressure water mist device 291, and water tank 292 is used for supplying water to high-pressure water mist device 291, and high-pressure water mist device 291 is used for spouting rivers with the water mist form, uses in the fire control. In particular, the fire-fighting equipment room 29 is arranged on a transverse shaft-transverse axisAnd the intersection area between the longitudinal axis (r) -the longitudinal axis (p). In this embodiment, a hoisting space is reserved on the right rear side of the second-layer deck 20, and the hoisting space corresponds to the hoisting space of the first-layer deck 10. In this embodiment, a first hanging platform 202 is further provided on the rear side of the high-voltage distribution room 21.

In this embodiment, equipment transportation corridors 201 are further disposed around the second deck 20 and are connected to each other to ensure equipment transportation and personnel evacuation.

As shown in fig. 4, an emergency power distribution room 32, a diesel engine room 33 and a heating and ventilation engine room 34 are further arranged on the three-layer deck 30, and the diesel engine room 33, the emergency power distribution room 32, the low-voltage power distribution room 31 and the heating and ventilation engine room 34 are sequentially arranged on one side of the three-layer deck 30 from back to front. In this embodiment, the left area of the three-layer deck 30 is the upper space of the high-voltage distribution room 21, the medium-voltage distribution room, the main transformer room and the reactor room 26, and the diesel engine room 33, the emergency distribution room 32, the low-voltage distribution room 31 and the heating and ventilation engine room 34 are all provided with the right area of the three-layer deck 30, specifically, the right area is a transverse shaft-transverse axisAnd the intersection area between the longitudinal axis (r) -the longitudinal axis (p). Wherein the diesel engine room 33 and the emergency power distribution room 32 are arranged on a transverse shaft-transverse axisAnd a cross region between the longitudinal axis (d) -the longitudinal axis (c), a diesel generator set 331 and an oil tank room 332 for supplying oil to the diesel generator set 331 are arranged in the diesel engine room 33; an emergency distribution facility 321 is provided in the emergency distribution room 32. The low-voltage distribution room 31 and the heating machine room 34 are arranged on the transverse shaft-transverse axisCross section of the low voltage distribution room 31 and the heating and ventilating machine room 34The sum of the areas is equal to the cross-sectional area of the electrical secondary equipment room 27, the cross-sectional area of the low-voltage distribution room 31 is smaller than that of the heating and ventilation machine room 34, and a low-voltage distribution device 311 is arranged in the low-voltage distribution room 31 and supplies power to the whole offshore booster station; two dehumidifiers 341 are provided in the heating and ventilating machine room 34. In this embodiment, a second hanging platform 301 is further disposed on the rear side of the three-layer deck 30, and the installation position of the second hanging platform 301 corresponds to the installation position of the first hanging platform 202.

As shown in fig. 5, a hoisting device 41 is installed on the top deck 40, and the top deck 40 is further provided with an overhaul cover plate corresponding to the high-voltage distribution room 21, the medium-voltage distribution room, the main transformer room, and the reactor room 26, respectively, a high-voltage distribution device overhaul cover plate 48, a first medium-voltage distribution device overhaul cover plate 43, a second medium-voltage distribution device overhaul cover plate 44, a first main transformer overhaul cover plate 45, a second main transformer overhaul cover plate 46, and a reactor overhaul cover plate 47; further, an access cover plate corresponding to the diesel engine room 33, specifically a diesel generator set access cover plate 49, is further disposed on the top deck 40. The hoisting range 411 of the hoisting equipment 41 can cover the hoisting areas of the overhaul cover plates and the offshore booster station, so that the hoisting equipment 41 can be used for replacing and overhauling the related equipment, and hoisting, operation and maintenance are facilitated. In this embodiment, the lifting device 41 is disposed on the transverse shaftAnd the longitudinal axis (c).

Further, an antenna device 42 is further disposed on the top deck 40, and the antenna device 42 is disposed outside the hoisting range 411 of the hoisting device 41, so as to avoid interference between the antenna device 42 and the hoisting. In this embodiment, the antenna device 42 has two sets, which are respectively disposed on the horizontal axis-transverse axisAnd a longitudinal axisCross region between longitudinal axis and transverse axis-transverse axisAnd the intersection area between the longitudinal axis (r) -the longitudinal axis (p).

As shown in fig. 1 to 5, the offshore booster station further includes at least one stair 50, and the stair 50 is disposed outside the first deck 10, the second deck 20, the third deck 30, and the top deck 40 and is communicated from the first deck 10 to the top deck 40. In this embodiment, a stair 50 is provided on each of the left and right sides of each deck.

In this embodiment, the distance between the first-layer deck board 10 and the second-layer deck board 20 is 8.5m, the distance between the second-layer deck board 20 and the third-layer deck board 30 is 7m, and the distance between the third-layer deck board 30 and the top-layer deck board 40 is 5 m. In this embodiment, the horizontal axis is on each deckTo the transverse axis7600mm from each other, transverse axisTo the transverse axisWith a distance of 15900mm from each other, transverse axisTo the transverse axisWith a distance of 14100mm between them, transverse axisTo the transverse axisThe distance between them was 6900 mm. The distance between the longitudinal axis (I) and the longitudinal axis (II) is 11000mm, the distance between the longitudinal axis (II) and the longitudinal axis (III) is 15000mm, the distance between the longitudinal axis (III) and the longitudinal axis (IV) is 15000mm, and the distance between the longitudinal axis (III) and the longitudinal axis (V) is 11000 mm.

The invention can be suitable for 1000MW offshore wind power plant of a 66kV power collection system to send out 500kV voltage level, a 66kV power collection line is connected to a 66kV bus through a fan feeder cabinet, the offshore booster station can realize boosting, and 500kV is sent out after landing on land through a 500kV submarine cable.

To sum up, the embodiment of the present invention provides a 500kV offshore booster station, which is provided with four decks, and facilities on the decks are optimally arranged, wherein a high voltage distribution room 21, a medium voltage distribution room, a main transformer room and a reactor room 26 all penetrate through three decks 30 and extend to the lower surface of a top deck 40, and corresponding requirements for equipment volume and floor height can both meet a 500kV transmission voltage level, so that the transmission voltage level is improved, the transmission capacity of a single-circuit submarine cable is increased, the transmission capacity is prevented from being limited by the transmission capacity of a 220kV submarine cable, and the 500kV offshore booster station is particularly suitable for a long-distance and large-capacity offshore wind farm, and the economic cost is reduced. In addition, the invention adopts integral arrangement, has reasonable and compact arrangement, and can meet the requirements of construction installation, operation maintenance and evacuation.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.