WO2023184873A1

WO2023184873A1 - Photovoltaic platform structure formed by modular assembly construction and capable of withstanding large wind waves

Info

Publication number: WO2023184873A1
Application number: PCT/CN2022/117500
Authority: WO
Inventors: 周昳鸣; 刘鑫; 李卫东; 肖平; 闫姝; 刘瑞超; 陈建军
Original assignee: 中国华能集团清洁能源技术研究院有限公司; 华能海上风电科学技术研究有限公司
Priority date: 2022-04-01
Filing date: 2022-09-07
Publication date: 2023-10-05
Also published as: CN114604381A

Abstract

A photovoltaic platform structure formed by modular assembly construction and capable of withstanding large wind waves, comprising single platform modules. Multiple single platform modules form a platform module unit; multiple platform module units form a photovoltaic platform structure; every two adjacent single platform modules are movably connected; each single platform module comprises a photovoltaic platform (1); photovoltaic assemblies (2) are provided above the photovoltaic platform (1); a floating column (3) is fixedly provided below the photovoltaic platform (1); and the end of the floating column (3) away from the photovoltaic platform (1) is connected to an anchor foundation (4) by means of a mooring cable (5). The single platform modules of the photovoltaic platform structure are laid out in a manner of assembling multiple triangles into arrays, so that the photovoltaic platform structure can deal with wind waves of different directions, can implement deformation coordination when the wind waves pass by, and can flexibly ensure coordination under multiple wave directions, thereby reducing the force received by connecting mechanisms between platforms.

Description

A photovoltaic platform structure with modular assembly construction that can withstand strong winds and waves

This application claims priority from the following Chinese patent applications, the entire contents of which are incorporated into this application by reference.

Application number: 202210349071.7

Application date: April 1, 2022

Name of the invention: A photovoltaic platform structure with modular assembly construction that can withstand strong winds and waves

Technical field

The present invention relates to the technical field of photovoltaic platforms, and in particular to a photovoltaic platform structure constructed through modular assembly and capable of withstanding strong winds and waves.

Background technique

At present, domestic floating photovoltaics are basically built in clean water lakes and reservoirs, where the wind and waves are very small, and the wave height is within 2m. Floating offshore photovoltaics are different from lake surface photovoltaics and reservoir photovoltaics. They are subject to more severe wind and wave conditions, with wave heights up to more than 7m.

Most of the existing surface photovoltaics use modular high-density polyethylene flexible photovoltaics, which cannot withstand large waves after forming an array through simple connections; when surface photovoltaics use rigid floating bodies, such as barge-type or semi-submersible super-large floating body foundations , the cost is higher. Traditional water surface photovoltaic structures are not suitable for offshore environments with harsh wind and wave conditions, and the connectors between the current square-connected photovoltaic platform structures have a heavy load when dealing with waves coming from multiple directions. Therefore, it is necessary to propose a low-cost , a photovoltaic structure that can cope with waves coming from multiple directions.

Contents of the invention

In view of the technical problem that most of the existing water surface photovoltaics existing in the above technology are flexible photovoltaics and cannot withstand large waves; when water surface photovoltaics use rigid floating bodies, the cost is high, the present invention proposes a modular assembly construction that can withstand large waves. photovoltaic platform structure.

The present invention proposes a photovoltaic platform structure constructed through modular assembly and capable of withstanding strong winds and waves, including:

A single platform module. A plurality of the single platform modules constitute a platform module unit. A plurality of the platform module units constitute a photovoltaic platform structure. Two adjacent single platform modules are movablely connected. The single platform module includes a photovoltaic platform. , photovoltaic modules are arranged above the photovoltaic platform, floating columns are fixedly installed below the photovoltaic platform, and one end of the floating columns away from the photovoltaic platform is connected to the anchor foundation through a mooring cable.

In some embodiments, the platform module unit includes at least four of the single platform modules.

In some embodiments, two adjacent single platform modules are connected by hinges or ball joints.

In some embodiments, the single platform module is an isosceles triangle.

In some embodiments, four of the single platform modules constitute one of the platform module units.

In some embodiments, the photovoltaic platform structure resists wind and waves in three sets of directions.

In some embodiments, the single platform module is an isosceles right triangle.

In some embodiments, eight of the single platform modules constitute one of the platform module units.

In some embodiments, the photovoltaic platform structure resists wind and waves in four sets of directions.

In some embodiments, a dynamic submarine cable is further included, one end of the dynamic submarine cable is connected to the photovoltaic platform, and one end of the dynamic submarine cable away from the photovoltaic platform is connected to a boosting station.

Compared with the existing technology, the beneficial effects of the present invention are:

The single platform modules of the photovoltaic platform structure of the present invention adopt a layout method in which multiple triangles are spliced into an array, so that the photovoltaic platform structure can cope with wind and waves in multiple directions, achieve deformation coordination when the waves pass by, and can be more flexible in multiple directions. The downward waves ensure coordination and reduce the stress on the connecting mechanisms between platforms.

The single platform modules of the photovoltaic platform structure of the present invention are movablely connected so that folding movements can occur between the single platform modules to better adapt to wind and waves and avoid damage to the photovoltaic platform structure due to wind and waves.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

Figure 1 is a schematic structural diagram of a single platform module according to an embodiment of the present invention;

Figure 2 is a schematic diagram of a photovoltaic module unit according to an embodiment of the present invention;

Figure 3 is a schematic diagram of a photovoltaic module unit according to an embodiment in which the single platform module is an isosceles right triangle, and a schematic diagram of the wind and wave directions it can cope with;

Figure 4 is a schematic structural diagram of a photovoltaic platform according to an embodiment of the present invention;

Figure 5 is a schematic diagram of a photovoltaic module unit in an embodiment in which the single platform module is an equilateral triangle and a schematic diagram of the wind and wave directions it can cope with;

Figure 6 is a schematic diagram of the spherical hinge connection between single platform modules;

Figure 7 is a schematic diagram of the hinge.

Explanation of reference symbols:

Photovoltaic platform 1, photovoltaic module 2, floating column 3, anchoring foundation 4, mooring cable 5, dynamic submarine cable 6, hinge 7, ball hinge 8, first single platform module 9, second single platform module 10, Three single platform modules 11, fourth single platform module 12, first group of wind waves 13, second group of wind waves 14, third group of wind waves 15, fifth single platform module 16, sixth single platform module 17, seventh single platform module 18. The eighth single platform module 19, the ninth single platform module 20, the tenth single platform module 21, the eleventh single platform module 22, the twelfth single platform module 23, the group a wind and waves 24, the group b wind and waves 25 , Group C Wind and Wave 26, Group D Wind and Wave 27.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and are not to be construed as limiting the present invention.

The photovoltaic platform structure proposed by modular assembly construction and capable of withstanding strong winds and waves according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in Figures 1-7, the photovoltaic platform structure constructed by modular assembly of the present invention and capable of withstanding strong winds and waves mainly includes single platform modules.

In some embodiments, a single platform module includes a photovoltaic platform 1 . Photovoltaic modules 2 are arranged on the photovoltaic platform 1, and the photovoltaic modules 2 are arranged in an array on the photovoltaic platform 1. It can be understood that the photovoltaic module 2 can be fixedly arranged on the photovoltaic platform 1 through connectors.

In some embodiments, floating columns 3 are fixedly provided below the photovoltaic platform 1 . The floating column 3 is fixedly arranged under the photovoltaic platform 1. The floating column 3 provides buoyancy for the photovoltaic platform 1, so that the photovoltaic platform structure floats on the water.

In some embodiments, the floating column 3 is a hollow structure. In some specific embodiments, 90% of the space in the upper part of the floating column 3 is air, and 10% of the space in the lower part is a concrete structure. On the one hand, this design of the floating column 3 can provide buoyancy for the photovoltaic platform structure, and on the other hand, it can Reduce the center of gravity of the photovoltaic platform 1.

In some embodiments, one end of the floating column 3 away from the photovoltaic platform 1 is connected to the anchoring foundation 4 . Specifically, one end of the floating column 3 away from the photovoltaic platform 1 is connected to the anchoring foundation 4 through a mooring cable 5 . Among them, the anchor foundation 4 can be a pile anchor foundation, a suction cylinder anchor foundation or a gravity anchor anchor foundation.

In some embodiments, the photovoltaic platform structure also includes a dynamic submarine cable 6, one end of the dynamic submarine cable 6 is connected to the photovoltaic platform 1, and one end of the dynamic submarine cable 6 away from the photovoltaic platform 1 is connected to a booster station (not shown in the figure). Dynamic submarine cable 6 supplies cables to the photovoltaic platform structure and transmits communication signals.

In some embodiments, two adjacent single platform modules are movably connected. The design of the movable connection between adjacent single platform modules allows relative rotation between the single platform modules to withstand wind and waves.

In some embodiments, two adjacent single platform modules are connected through hinges 7 or ball hinges 8 .

As shown in Figure 2, single platform modules are movablely connected through hinges 7. Specifically, a part of the hinge 7 is fixedly arranged on a single platform module, and the other part of the hinge 7 is arranged on another adjacent single platform module, thereby connecting the two adjacent single platform modules. It can be understood that the hinge 7 has a large enough rotation angle, so that when there are wind and waves, the adjacent single platform modules will rotate relative to each other, thereby resisting the wind and waves.

As shown in Figure 6, single platform modules are connected through ball joints 8. It can be understood that the ball hinge 8 has a certain rotation angle. When there are wind and waves, the adjacent single platform modules will rotate relative to each other to resist the wind and waves.

In some embodiments, multiple single platform modules form a platform module unit, and multiple platform module units form a photovoltaic platform structure. In other words, the smallest unit of the photovoltaic platform structure is the platform module unit, and the smallest unit of the platform module unit is the single platform module. Modular assembly construction is carried out between single platform modules to finally form a photovoltaic platform structure.

In some embodiments, the platform module unit includes at least 4 single platform modules. The single platform modules are movablely connected. In order to achieve the effect of better resisting wind and waves, the platform module unit includes at least 4 single platform modules. It can be understood that the greater the number of single platform modules included in the platform module unit, the smaller the size of the single platform module and the better it can adapt to wind and waves.

In some embodiments, the single platform module is an isosceles triangle. In some embodiments, four single platform modules form one platform module unit.

As shown in Figure 5, taking an equilateral triangle as an example, four single platform modules form a platform module unit, and multiple platform module units form a photovoltaic platform structure. Among them, the single platform modules are the first single platform module 9, the second single platform module 10, the third single platform module 11 and the fourth single platform module 12 respectively. The photovoltaic platform can withstand wind and waves in three groups of directions.

In order to facilitate understanding, the directions of wind and waves are described in terms of up, down, left and right. The direction of the first group of wind waves 13 is in the up and down direction, the direction of the second group of wind waves 14 is the direction of the first group of wind waves 13 rotating 60° counterclockwise, and the direction of the third group of wind waves 15 is the direction of the first group of wind waves 13 rotating clockwise. 60° direction.

When the direction of wind and waves is from top to bottom, the first single platform module 9 rotates along the bottom of the first single platform module 9; when the direction of wind and waves is from bottom to top, the second single platform module 10 and the third single platform module 9 rotate The platform module 11 and the fourth single platform module 12 rotate along the top of the third single platform module 11; when the direction of the wind and waves is from the upper left to the lower right, the first single platform module 9, the second single platform module 10 and the third The platform module 11 rotates along the right side of the third single platform module 11; when the direction of the wind and waves is from the lower right to the upper left, the fourth single platform module 12 rotates along the left side of the fourth single platform module 12; When the direction of the wind and waves is from the upper right to the lower left, the first single platform module 9, the third single platform module 11 and the fourth single platform module 12 rotate along the left side of the third single platform module 11; when the direction of the wind and waves is from When moving from the lower left to the upper right, the second single platform module 10 rotates along the right side of the second single platform module 10 .

As shown in Figure 4 and Figure 3, taking an isosceles right triangle as an example, 8 single platform modules form a platform module unit, and multiple platform module units form a photovoltaic platform structure. Among them, for the convenience of distinction, the single-platform modules are respectively recorded as the fifth single-platform module 16, the sixth single-platform module 17, the seventh single-platform module 18, the eighth single-platform module 19, the ninth single-platform module 20, and the tenth single-platform module. Platform module 21, eleventh single platform module 22, twelfth single platform module 23. The photovoltaic platform can withstand wind and waves in four groups of directions.

In order to facilitate understanding, the directions of wind and waves are described in terms of up, down, left and right. The direction of the wind waves 24 of the group a is along the up and down direction, the direction of the wind waves 25 of the group b is along the left and right direction, the direction of the wind waves 26 of the group c is the direction of the wind waves 24 of the group a turning 45° counterclockwise, and the direction of the wind waves 27 of the group d is The direction is the direction of group a wind wave 24 turning 45° clockwise.

When the direction of wind and waves is from top to bottom, the fifth single platform module 16, the sixth single platform module 17, the seventh single platform module 18, and the eighth single platform module 19 move along the fifth single platform module 16 and the eighth single platform module 16. The hypotenuses in contact with the platform modules 19 rotate; when the direction of the wind and waves is from bottom to top, the ninth single platform module 20, the tenth single platform module 21, the eleventh single platform module 22, and the twelfth single platform module 23 Rotate along the hypotenuse where the ninth single platform module 20 and the twelfth single platform module 23 are in contact; when the direction of the wind and waves is from the upper left to the lower right, the fifth single platform module 16, the sixth single platform module 17, and the The seventh single platform module 18 and the twelfth single platform module 23 rotate along the right-angled edge where the seventh single platform module 18 and the twelfth single platform module 23 are in contact; when the direction of the wind and waves is from the lower right to the upper left, the eighth The single platform module 19, the ninth single platform module 20, the tenth single platform module 21, and the eleventh single platform module 22 rotate along the right-angled edge where the eighth single platform module 19 and the eleventh single platform module 22 abut; when When the direction of the wind and waves is from the upper right to the lower left, the sixth single platform module 17, the seventh single platform module 18, the eighth single platform module 19, and the ninth single platform module 20 move along the sixth single platform module 17 and the ninth single platform module. The right-angled sides of the modules 20 that are in contact rotate; when the direction of the wind and waves is from the lower left to the upper right, the fifth single platform module 16, the ninth single platform module 20, the tenth single platform module 21, and the twelfth single platform module 23 move along The right-angled sides of the fifth single platform module 16 and the tenth single platform module 21 rotate; when the direction of the wind and waves is from left to right, the fifth single platform module 16, the sixth single platform module 17, the eleventh single platform The module 22 and the twelfth single platform module 23 rotate along the hypotenuse where the sixth single platform module 17 and the eleventh single platform module 22 are in contact; when the direction of the wind and waves is from right to left, the seventh single platform module 18 , the eighth single platform module 19 , the ninth single platform module 20 , and the tenth single platform module 21 rotate along the hypotenuse where the seventh single platform module 18 and the tenth single platform module 21 abut.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the invention. In this specification, the schematic expressions of the above terms may be directed to different embodiments or examples. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the invention. The scope of the invention is defined by the claims and their equivalents.

Claims

A photovoltaic platform structure constructed by modular assembly and capable of withstanding strong winds and waves, which is characterized by including:

A single platform module. A plurality of the single platform modules constitute a platform module unit. A plurality of the platform module units constitute a photovoltaic platform structure. Two adjacent single platform modules are movablely connected. The single platform module includes a photovoltaic platform. , photovoltaic modules are arranged above the photovoltaic platform, floating columns are fixedly installed below the photovoltaic platform, and one end of the floating columns away from the photovoltaic platform is connected to the anchor foundation through a mooring cable.
The photovoltaic platform structure of claim 1, wherein the platform module unit includes at least four of the single platform modules.
The photovoltaic platform structure according to claim 1, characterized in that two adjacent single platform modules are connected by hinges or ball joints.
The photovoltaic platform structure according to any one of claims 1 to 3, characterized in that the single platform module is an isosceles triangle.
The photovoltaic platform structure according to claim 4, characterized in that four of the single platform modules constitute one of the platform module units.
The photovoltaic platform structure according to claim 5, characterized in that the photovoltaic platform structure resists wind and waves in three groups of directions.
The photovoltaic platform structure according to claim 4, wherein the single platform module is an isosceles right triangle.
The photovoltaic platform structure according to claim 7, wherein eight of the single platform modules constitute one of the platform module units.
The photovoltaic platform structure according to claim 8, characterized in that the photovoltaic platform structure resists wind and waves in four groups of directions.
The photovoltaic platform structure according to claim 1, further comprising a dynamic submarine cable, one end of the dynamic submarine cable is connected to the photovoltaic platform, and one end of the dynamic submarine cable away from the photovoltaic platform is connected to a boosting station. .