An embedded box transformer floating platform for offshore photovoltaics
By incorporating the design of the floating platform for the transformer substation, the problems of corrosion susceptibility and poor stability of offshore photovoltaic transformer substation equipment have been solved, achieving higher stability and safety, especially in the safety of maintenance processes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- POWERCHINA FUJIAN ELECTRIC POWER SURVEY & DESIGN INST CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-14
AI Technical Summary
Existing offshore photovoltaic transformer equipment is susceptible to wind and rain erosion, and its high center of gravity results in weak resistance to wind and waves, as well as inconvenient maintenance.
An embedded prefabricated transformer floating platform is designed. Through the structure of heave plates, compartment partitions and maintenance platforms, the central prefabricated transformer is embedded in the load-bearing compartment. Combined with maintenance ladders and mesh guardrails, the stability and safety are improved.
This reduces the risk of seawater corrosion to the transformer substation equipment, improves the stability and safety of the platform, ensures that the platform will not sink in the event of partial damage, and enhances the safety of maintenance.
Smart Images

Figure CN224491432U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an embedded box-type floating platform for offshore photovoltaic power generation, belonging to the technical field of offshore photovoltaic power generation equipment. Background Technology
[0002] With the country's vigorous promotion of new energy power generation construction, photovoltaic power stations are gradually developing towards the sea. Offshore photovoltaic power stations are divided into pile-based fixed type and floating type. In offshore floating photovoltaic, the transformer box is the heaviest equipment in the photovoltaic system. The upper surface of conventional floating platforms is mostly flat, and the transformer box equipment is directly installed on the flat surface.
[0003] Chinese utility model patent CN219077432U discloses a multi-buoy structure box-type variable displacement buoy.
[0004] The floating platform includes a support platform and multiple floating body assemblies arranged in an array. Each floating body assembly includes an outer shell and one or more floating bodies. The outer shell contains one or more placement spaces, and each placement space contains one floating body. The support platform has multiple first inspection ports, and the outer shell of each floating body assembly has at least one second inspection port for personnel to enter the placement space. The first and second inspection ports correspond one-to-one. Inspection ports on both the support platform and the outer shell allow personnel to easily access and maintain the floating bodies within the placement space without entering the water or using boats or other tools.
[0005] The above-mentioned utility model is the same as the traditional box-type transformer substation support equipment. The box-type transformer substation equipment is directly installed on a plane and supported by multiple floating bodies. The box-type transformer substation equipment is susceptible to wind and rain erosion, and the center of gravity of the box-type transformer substation equipment is relatively high, resulting in a weak ability of the support device to resist wind and waves.
[0006] Therefore, it is necessary to improve the existing transformer substation bearing equipment. Utility Model Content
[0007] The purpose of this invention is to provide an embedded prefabricated floating platform for offshore photovoltaic applications, in order to solve the problems mentioned in the background art.
[0008] The technical solution of this utility model is as follows:
[0009] An embedded prefabricated substation floating platform for offshore photovoltaic systems includes a heave plate and a support platform, wherein the heave plate is located below the support platform; the support platform is divided into a ballast water tank and a load-bearing tank by a partition, wherein the ballast water tank is located below the load-bearing tank, and the load-bearing tank is provided with maintenance platforms on all four sides, with a central prefabricated substation embedded in the center.
[0010] Furthermore, the maintenance platform is surrounded by mesh guardrails on all four sides, with a passage opening in the middle of one of the mesh guardrails.
[0011] Furthermore, the upper surface area of the sway plate is larger than the lower surface area of the bearing platform.
[0012] Furthermore, the inner side of the maintenance platform is equipped with a maintenance ladder leading to the central transformer substation.
[0013] Furthermore, the ballast chamber is equipped with an automatic start / stop pump, an inlet pipe, and an outlet pipe.
[0014] This utility model has the following beneficial effects:
[0015] The central transformer is embedded within the load-bearing compartment, lowering its center of gravity and preventing direct seawater erosion of the transformer equipment, thus improving the stability of the embedded transformer floating platform. A partition divides the platform into a ballast tank and a load-bearing compartment. Damage to either compartment will only cause localized instability, preventing the entire platform from sinking, thus enhancing safety. A heave plate at the bottom suppresses heaving, further improving stability. A mesh guardrail on the maintenance platform further enhances safety. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the external structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of this utility model.
[0018] The reference numerals in the figure are as follows:
[0019] 1. Heave plate; 2. Bearing platform; 21. Ballast tank; 22. Compartmentation partition; 23. Maintenance platform; 231. Mesh guardrail; 232. Maintenance ladder; 24. Central transformer substation. Detailed Implementation
[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0021] Reference Figures 1 to 2 An embedded prefabricated substation floating platform for offshore photovoltaic use includes a heave plate 1 and a support platform 2. The heave plate 1 is located below the support platform 2. The heave plate 1 is used to suppress the heave motion of the embedded prefabricated substation floating platform and improve the stability of the embedded prefabricated substation floating platform. The upper surface area of the heave plate 1 is larger than the lower surface area of the support platform 2.
[0022] The carrying platform 2 is divided into a ballast water tank 21 and a load-bearing tank by a partition 22. If either the ballast water tank 21 or the load-bearing tank is damaged, the other tank can continue to operate. The embedded substation floating platform will only experience localized instability and will not sink entirely. The ballast water tank 21 is located below the load-bearing tank. The ballast water tank 21 regulates the water volume through an automatic start / stop pump, inlet pipe, and outlet pipe, thereby adjusting the center of gravity, draft, and buoyancy of the embedded substation floating platform to ensure its stability. The load-bearing tank includes a maintenance platform 23 surrounding it and an embedded... The central transformer substation 24 is embedded in the middle of the load-bearing compartment, causing its center to shift downwards. Unlike traditional transformer substation platforms that place the equipment on a flat surface, embedding the central transformer substation 24 in the middle of the load-bearing compartment reduces the frequency of seawater erosion. The maintenance platform 23 has a maintenance ladder 232 leading to the central transformer substation 24 on its inner side. The maintenance platform 23 is surrounded by mesh railings 231 on all four sides to improve the safety of maintenance workers during maintenance. One side of the mesh railing 231 has a passage opening in the middle to allow maintenance workers to enter the maintenance platform 23 to maintain the central transformer substation 24.
[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. An embedded prefabricated floating platform for offshore photovoltaic applications, characterized in that: It includes a heave plate (1) and a bearing platform (2), the heave plate (1) is located below the bearing platform (2); the bearing platform (2) is divided into a ballast water chamber (21) and a load-bearing chamber by a partition plate (22), the ballast water chamber (21) is located below the load-bearing chamber, the load-bearing chamber is provided with maintenance platforms (23) on all four sides, and a central transformer box (24) is embedded in the middle.
2. The embedded prefabricated floating platform for offshore photovoltaic power as described in claim 1, characterized in that: The maintenance platform (23) is surrounded by a mesh guardrail (231) on all four sides, and one of the mesh guardrails (231) has a passage gap in the middle.
3. The embedded prefabricated floating platform for offshore photovoltaic power as described in claim 1, characterized in that: The upper surface area of the sway plate (1) is greater than the lower surface area of the bearing platform (2).
4. The embedded prefabricated floating platform for offshore photovoltaic power as described in claim 1, characterized in that: The maintenance platform (23) is provided with a maintenance ladder (232) leading to the central transformer (24) on its inner side.
5. An embedded prefabricated floating platform for offshore photovoltaic power as described in claim 1, characterized in that: The ballast chamber (21) is equipped with an automatic start / stop pump, an inlet pipe, and an outlet pipe.