Offshore photovoltaic box transformer substation supporting system

Abstract

The utility model discloses an offshore photovoltaic box transformer substation supporting system, belongs to the technical field of offshore photovoltaic box transformer substations, and can solve the problems that an existing box transformer substation platform is difficult to stably install on the sea and is not suitable for offshore working conditions. The system comprises a plurality of supporting piles; the box transformer substation platform is fixed at the top ends of the plurality of supporting piles and is used for supporting box transformer substation equipment; the box transformer platform is provided with an overhanging part horizontally extending towards one side; the overhanging part is used for being connected with a cable bridge; the cable platform is connected below the box transformer platform and is used for supporting a cable; the oil tank frame is connected below the box-type transformer substation platform, is positioned on one side of the cable platform and is used for mounting a box-type transformer substation oil tank; and the overhauling ladder stand is fixed on the supporting piles, and the top end of the overhauling ladder stand is communicated with the overhauling inlet of the box transformer substation platform. The support is used for supporting and installing the box transformer substation and related equipment on the sea.

Description

Technical Field

[0001] This utility model relates to a support system for offshore photovoltaic transformer substations, belonging to the field of offshore photovoltaic transformer substation technology. Background Technology

[0002] In offshore photovoltaic (PV) power generation systems, photovoltaic modules generate direct current (DC) under sunlight. This DC is converted to alternating current (AC) by an inverter. The AC is then regulated by a transformer to ensure it meets transmission requirements before being transmitted to the land-based or offshore power grid via submarine cables. Offshore PV systems typically use prefabricated substations ("panel substations"). Before reaching land, the electricity collected by the offshore PV system needs to be stepped up by the transformer via collector cables. Therefore, it is necessary to construct a prefabricated substation platform at sea to support and install the substation, thus meeting the power transmission requirements.

[0003] However, the marine environment is more complex and variable than the terrestrial environment, and existing prefabricated substation platforms cannot withstand the effects of harsh sea conditions such as wind, waves, currents, and ice, nor can they meet the requirements for convenient and efficient offshore construction operations, making it difficult to install them stably at sea. Furthermore, existing prefabricated substation platforms also suffer from drawbacks such as large-scale offshore construction, high construction costs, and inconvenient maintenance and repair, resulting in their inability to adequately adapt to offshore working conditions. Summary of the Invention

[0004] This invention provides a support system for offshore photovoltaic transformer substations, which can solve the problem that existing transformer substation platforms are difficult to install stably at sea and are not suitable for offshore working conditions.

[0005] This utility model provides a support system for an offshore photovoltaic transformer substation, the system comprising:

[0006] Multiple support piles;

[0007] A prefabricated transformer platform, fixed to the top of multiple support piles, is used to support the prefabricated transformer equipment; the prefabricated transformer platform has a cantilevered section extending horizontally to one side; the cantilevered section is used to connect with a cable tray.

[0008] A cable platform, connected below the transformer substation platform, is used to support the cables;

[0009] The oil tank frame is connected below the transformer substation platform and located on one side of the cable platform, and is used to install the transformer substation oil tank.

[0010] The maintenance ladder is fixed to the support pile, and its top end is connected to the maintenance entrance of the transformer substation platform.

[0011] Optionally, the transformer substation platform includes:

[0012] The frame is fixed to the top of multiple support piles;

[0013] The first grating plate is disposed on the frame to support the transformer substation equipment;

[0014] The guardrail is fixed to the edge of the frame.

[0015] Optionally, the framework includes:

[0016] Multiple main beams are fixed to the tops of multiple support piles;

[0017] Multiple secondary beams are erected on multiple main beams and are distributed intersecting with the multiple main beams to support the first grid plate;

[0018] Multiple diagonal braces are diagonally connected to multiple main beams and multiple secondary beams.

[0019] Optionally, the cable platform is connected to multiple support piles.

[0020] Optionally, the cable platform includes:

[0021] The second grating plate is horizontally positioned below the transformer substation platform and connected to multiple support piles to support the cables.

[0022] Multiple columns are provided, with their top ends connected to the bottom of the transformer substation platform and their bottom ends connected to the second grid plate.

[0023] Optionally, the system further includes:

[0024] A protective cage is fitted onto the maintenance ladder, and its top end is connected to the maintenance entrance.

[0025] Optionally, the system further includes:

[0026] Multiple clamps are installed at different heights on the support pile to fix the maintenance ladder and the protective cage to the support pile.

[0027] Optionally, the maintenance access door is equipped with a cover plate.

[0028] Optionally, the support pile is a prestressed high-strength concrete pipe pile.

[0029] The beneficial effects that this utility model can produce include:

[0030] This invention achieves integrated and stable installation of a transformer substation system, including the substation equipment and related devices, by setting up a transformer substation platform, cable platform, and fuel tank frame on support piles, ensuring the system can operate normally in harsh sea conditions. The inclusion of a maintenance ladder facilitates regular maintenance and repair of the substation and support systems, further contributing to their stable operation.

[0031] The transformer substation platform, cable platform, fuel tank rack, and maintenance ladder of this invention can be fabricated and assembled separately on land, and then the entire structure can be hoisted to the sea for assembly into a support system, thus achieving modularization of the system structure. This significantly reduces the amount of offshore construction work required for the support system, meets the requirements for convenient and efficient offshore construction operations, and also reduces economic costs to a certain extent. Attached Figure Description

[0032] Figure 1 A schematic diagram of the structure of the offshore photovoltaic transformer substation support system provided in this embodiment of the utility model;

[0033] Figure 2 This is a front view of the offshore photovoltaic transformer substation support system provided in an embodiment of the present utility model;

[0034] Figure 3 A top view of the marine photovoltaic transformer substation support system provided in an embodiment of this utility model;

[0035] Figure 4 The right view of the offshore photovoltaic transformer support system provided in this embodiment of the utility model.

[0036] Figure label:

[0037] 1. Support piles; 2. Transformer platform; 3. Cable platform; 4. Maintenance ladder; 5. Hoops; 6. Protective cage; 7. Transformer oil tank; 8. Guardrail; 9. First grating plate; 10. Cover plate; 11. Cantilever section. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the embodiments, but the present invention is not limited to these embodiments.

[0039] This utility model embodiment provides a support system for offshore photovoltaic transformer substations, such as... Figures 1 to 4 As shown, the system includes:

[0040] Multiple support piles 1;

[0041] The transformer substation platform 2 is fixed to the top of multiple support piles 1 and is used to support the transformer substation equipment; the transformer substation platform 2 has a cantilever 11 that extends horizontally to one side; the cantilever 11 is used to connect with the cable tray.

[0042] Cable platform 3 is connected below the transformer substation platform 2 and is used to support cables;

[0043] The oil tank frame is connected below the transformer substation platform 2 and located on one side of the cable platform 3, and is used to install the transformer substation oil tank 7.

[0044] The maintenance ladder 4 is fixed on the support pile 1, and its top end is connected to the maintenance entrance of the transformer platform 2.

[0045] Specifically, the cantilevered portion 11 of the transformer substation platform 2 is connected to the cable tray using bolts. The cable tray supports and guides the power collection cables, and connecting the transformer substation platform 2 to the cable tray facilitates the connection of the power collection cables to the transformer substation equipment.

[0046] Specifically, multiple support piles 1 are evenly distributed, and each support pile 1 is vertically fixed to the seabed. In this embodiment, four support piles 1 are provided.

[0047] Specifically, in this embodiment, the support pile 1 can be a prestressed high-strength concrete (PHC) pipe pile.

[0048] Specifically, the transformer substation platform 2 may include:

[0049] The frame is fixed to the top of multiple support piles 1;

[0050] The first grating plate 9 is installed on the frame to support the transformer substation equipment;

[0051] Guardrail 8 is fixed to the edge of the frame.

[0052] Specifically, the framework may include:

[0053] Multiple main beams are fixed to the top of multiple support piles 1;

[0054] Multiple secondary beams are erected on multiple main beams and are distributed intersecting with the multiple main beams to support the first grid plate 9;

[0055] Multiple diagonal braces are diagonally connected to multiple main beams and multiple secondary beams.

[0056] In this embodiment, the main beam, secondary beam, and diagonal brace are all made of steel sections, with the main beam being an H-beam; the connections between each pair of the main beam, secondary beam, and diagonal brace are all made by welding, and the connection between the main beam and the support pile 1 is also made by welding.

[0057] Specifically, the first grating plate 9 is made of steel, and its structure is well-ventilated, which is beneficial for the heat dissipation of the transformer substation equipment.

[0058] In this embodiment, the transformer substation is located in the middle of the frame, and the area around the frame can be used as a maintenance passage.

[0059] Specifically, the cable platform 3 is connected to multiple support piles 1.

[0060] Specifically, the cable platform 3 may include:

[0061] The second grating plate is horizontally installed below the transformer substation platform 2 and connected to multiple support piles 1 to support cables;

[0062] Multiple columns, the top of which are connected to the frame of the transformer substation platform 2, and the bottom of which are connected to the second grid plate.

[0063] In this embodiment, the columns are made of H-beams, and eight columns are installed. The connection between the columns and the frame of the transformer substation platform 2 and the second grid plate is welded.

[0064] Specifically, the second grating is made of steel.

[0065] Specifically, the fuel tank rack includes:

[0066] Multiple vertical beams are located on one side of the cable platform 3, and their tops are connected to the frame of the transformer substation platform 2.

[0067] Multiple horizontal beams, each with its two ends connected to the bottom ends of two vertical beams; the space enclosed by the multiple vertical beams, multiple horizontal beams, and the frame of the transformer substation platform 2 is used to install the transformer substation oil tank 7.

[0068] In this embodiment, the vertical beams are made of round steel pipes, and four vertical beams are provided. The connection between the vertical beams and the frame of the transformer substation platform 2 is made by welding.

[0069] Specifically, the system may also include:

[0070] The protective cage 6 is fitted onto the maintenance ladder 4, and its top is connected to the maintenance entrance of the transformer platform 2.

[0071] Specifically, in this embodiment, both the maintenance ladder 4 and the protective cage 6 are made of steel.

[0072] Specifically, the maintenance entrance is equipped with a cover plate 10.

[0073] Specifically, the system may also include:

[0074] Multiple clamps 5 are installed at different heights on the support pile 1 to fix the maintenance ladder 4 and the protective cage 6 to the support pile 1.

[0075] In this embodiment, the clamp 5 is connected to the steel bar reserved on the support pile 1, which can effectively prevent the clamp from falling off.

[0076] This invention achieves integrated and stable installation of a transformer substation system, including the substation equipment and related devices, by setting up a transformer substation platform 2, a cable platform 3, and an oil tank frame on the support pile 1, ensuring the normal operation of the substation system under harsh sea conditions. The inclusion of a maintenance ladder 4 facilitates regular maintenance and repair of the substation system and support system, further ensuring their stable operation.

[0077] Meanwhile, the transformer substation platform 2, cable platform 3, fuel tank frame, and maintenance ladder 4 of this utility model can be processed and assembled separately on land, and then the entire structure can be hoisted to the sea for assembly into a support system, thereby achieving modularization of the system structure. This greatly reduces the amount of offshore construction work required for the support system, meets the requirements for convenient and efficient offshore construction operations, and at the same time reduces economic costs to a certain extent.

[0078] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A support system for an offshore photovoltaic transformer substation, characterized in that, The system includes: Multiple support piles; A prefabricated transformer platform, fixed to the top of multiple support piles, is used to support the prefabricated transformer equipment; the prefabricated transformer platform has a cantilevered section extending horizontally to one side; the cantilevered section is used to connect with a cable tray. A cable platform, connected below the transformer substation platform, is used to support the cables; The oil tank frame is connected below the transformer substation platform and located on one side of the cable platform, and is used to install the transformer substation oil tank. The maintenance ladder is fixed to the support pile, and its top end is connected to the maintenance entrance of the transformer substation platform.

2. The system according to claim 1, characterized in that, The transformer substation platform includes: The frame is fixed to the top of multiple support piles; The first grating plate is disposed on the frame to support the transformer substation equipment; The guardrail is fixed to the edge of the frame.

3. The system according to claim 2, characterized in that, The framework includes: Multiple main beams are fixed to the tops of multiple support piles; Multiple secondary beams are erected on multiple main beams and are distributed intersecting with the multiple main beams to support the first grid plate; Multiple diagonal braces are diagonally connected to multiple main beams and multiple secondary beams.

4. The system according to claim 1, characterized in that, The cable platform is connected to multiple support piles.

5. The system according to claim 4, characterized in that, The cable platform includes: The second grating plate is horizontally positioned below the transformer substation platform and connected to multiple support piles to support the cables. Multiple columns are provided, with their top ends connected to the bottom of the transformer substation platform and their bottom ends connected to the second grid plate.

6. The system according to claim 1, characterized in that, The system also includes: A protective cage is fitted onto the maintenance ladder, and its top end is connected to the maintenance entrance.

7. The system according to claim 6, characterized in that, The system also includes: Multiple clamps are installed at different heights on the support pile to fix the maintenance ladder and the protective cage to the support pile.

8. The system according to claim 1, characterized in that, The maintenance entrance is covered with a cover plate.

9. The system according to claim 1, characterized in that, The support piles are prestressed high-strength concrete pipe piles.

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