A support system for offshore floating photovoltaic peak-shaving extended power generation

Abstract

This utility model discloses a support system for extending power generation by staggering peak hours of floating photovoltaic power generation at sea, belonging to the field of photovoltaic power generation technology. It includes a float with multiple columns fixedly connected side-by-side on both sides, each column having a hinged inclined beam at its upper end; multiple adjustment mechanisms corresponding to the inclined beams, used to adjust the rotation angle of the inclined beams relative to the columns and maintain a fixed position at a specific angle; multiple purlins arranged parallel to the column arrangement direction and symmetrically fixed to the inclined beams on both sides of the float; and two sets of photovoltaic modules, respectively fixedly installed on the purlins on both sides of the float, facing due east and due west respectively, with their tilt angle changing with the tilt angle of the inclined beams. This utility model can extend power generation time by staggering peak power generation through symmetrical east-west arrangement. Simultaneously, the change in azimuth angle reduces the shadow distance between the front and rear modules, reducing the size of the float and lowering relative costs. Furthermore, the maximum power can be tracked in real time by adjusting the angle, improving power generation efficiency and float area utilization.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic power generation technology, and in particular relates to a support system for offshore floating photovoltaic peak-shifting and extended power generation. Background Technology

[0002] As the global energy structure shifts towards clean energy, photovoltaic (PV) power generation, as an important form of renewable energy utilization, is seeing its application scenarios continuously expand. Offshore floating PV systems, due to their lack of land-based resource requirements, superior cooling conditions, and stable sunlight availability, have become a significant direction for PV technology development in recent years. However, the support structure design and PV module arrangement of offshore floating PV systems directly affect their power generation efficiency, operational stability, and overall economic viability, and remain a core focus for current technological optimization.

[0003] In existing offshore floating photovoltaic (PV) support systems, the mainstream design for PV module arrangement is "concentrated facing south." This means that the PV modules are fixed to a south-facing direction (azimuth angle of 0°) using supports, and combined with a specific tilt angle to obtain the theoretically maximum noon solar radiation. The core logic of this design is based on the experience of traditional terrestrial PV, which holds that the solar altitude angle is the largest at noon, and that arranging them facing south can maximize the reception of solar radiation during the noon period.

[0004] However, the aforementioned existing technologies have the following significant limitations:

[0005] Concentrated power generation time and short overall duration: Under the current design, the peak power generation of photovoltaic modules is concentrated between 9:00 and 15:00 in the morning. However, during the periods from sunrise to 9:00 in the morning and from 15:00 to sunset in the afternoon, the photovoltaic modules receive light at a poor angle due to the sun's azimuth angle deviating from due south, resulting in a significant decrease in power generation efficiency. This leads to a short effective power generation time for the system throughout the day, making it impossible to fully utilize the solar radiation resources during the day-night cycle.

[0006] Grid pressure and revenue loss: Concentrated power generation at noon can easily lead to oversupply of electricity, increasing the difficulty and cost of peak regulation for the power grid; and under the time-of-use pricing in the electricity market, noon is mostly a low-price "valley" or "flat" period, while power generation efficiency is low during the morning and evening peak hours (high-price "peak" periods), directly reducing transaction revenue.

[0007] Shadowing interference leads to high cost of floating bodies: In order to avoid mutual shading of photovoltaic modules in front and behind when the sun's altitude angle is low (such as in the morning or evening), the existing south-facing arrangement design requires a large front-to-back distance to reduce the impact of shadows. This directly leads to an increase in the size of the floating bodies required for the support system, which not only increases the material cost and manufacturing difficulty of the floating bodies, but also reduces the installation density of photovoltaic modules per unit sea area, affecting the overall economic efficiency of the system.

[0008] Fixed angles and insufficient adaptability: The tilt angles of photovoltaic modules in existing support systems are mostly fixed values, which cannot be dynamically adjusted according to real-time changes in solar altitude and azimuth angles. This makes it difficult to maintain the optimal light-receiving angle at different times (such as seasonal changes and day-night changes), further limiting the improvement of power generation efficiency.

[0009] Therefore, in response to the problems of concentrated power generation time, insufficient efficiency and economy of existing offshore floating photovoltaic support systems, there is an urgent need for a new type of support system that can extend the power generation time, adjust the peak power generation, optimize space utilization and reduce costs. Utility Model Content

[0010] To solve the above-mentioned technical problems, this utility model proposes a support system for offshore floating photovoltaic peak-shifting and extended power generation.

[0011] To achieve the above objectives, this utility model provides a support system for offshore floating photovoltaic power generation with peak shifting and extension, comprising:

[0012] A floating body, with multiple columns fixedly connected side by side on both sides of the floating body, and an inclined beam hinged to the upper end of the columns;

[0013] Multiple adjustment mechanisms are provided, corresponding to multiple inclined beams, for adjusting the rotation angle of the inclined beams relative to the column and keeping them fixed at a specific angle;

[0014] Multiple purlins are arranged parallel to each other along the direction of the column arrangement and are symmetrically fixed to the inclined beams on both sides of the float.

[0015] Two sets of photovoltaic modules are fixedly installed on the purlins on both sides of the float, with the two sets of photovoltaic modules facing due east and due west respectively, and the tilt angle changing with the tilt angle of the inclined beam.

[0016] Optionally, the float includes two pontoons arranged in parallel, with the ends of the two pontoons connected to each other by connecting columns; a plurality of columns are fixedly attached to the two pontoons in parallel.

[0017] Optionally, the photovoltaic module includes multiple sets of solar panels, each set of solar panels being arranged side by side along the extension direction of the purlin.

[0018] Optionally, the adjustment mechanism is an electric telescopic rod, one end of which is hinged to the side of the column and the other end is hinged to the bottom of the inclined beam.

[0019] Optionally, the adjustment mechanism can adjust the angle range from 0 to 90 degrees.

[0020] Optionally, each group of photovoltaic modules has a photosensitive sensor fixed at each of its four corners. The photosensitive sensor is electrically connected to a control component. The photosensitive sensor transmits the measured information to the control component, and the control component uniformly regulates multiple adjustment mechanisms based on the information measured by the photosensitive sensor.

[0021] Optionally, the photosensitive sensor is a photoresistor.

[0022] Optionally, the control component is a PLC or a microcontroller, which is fixed to the float.

[0023] Compared with the prior art, the present invention has the following advantages and technical effects:

[0024] Two sets of photovoltaic modules face due east and due west respectively. Combined with the adjustment mechanism to control the tilt angle, "time-of-use high-efficiency power generation" can be achieved: the eastern photovoltaic modules receive solar radiation from sunrise to noon in the morning, while the western photovoltaic modules receive solar radiation from noon to sunset in the afternoon. This avoids the limitation of existing technologies where photovoltaic modules are concentrated facing south, resulting in "high peak power generation at noon and low power generation efficiency in the morning and evening," significantly extending the effective power generation time of the overall system. This peak-shifting design makes power generation more evenly distributed throughout the day, avoiding the grid pressure or reduced trading revenue caused by concentrated power supply at noon in the traditional model, thus improving the utilization efficiency and economic value of power resources. The adjustment mechanism can flexibly adjust the tilt angle of the inclined beam and photovoltaic modules, and can track the maximum power in real time according to changes in the sun's position, enhancing the ability to capture sunlight at different times and improving the light energy conversion efficiency. Due to the east-west arrangement, the shadow distance between the front and rear modules is reduced, allowing for a relatively smaller floating body size. While ensuring power generation performance, this increases the utilization rate of the floating body area, reduces the relative cost of the floating body, and improves the system's economics. The connection design of the floating body, columns, inclined beams, purlins, and other structures provides stable support for the photovoltaic modules, adapting to the needs of the floating marine environment and ensuring the stability and reliability of the system under marine conditions. The overall structure is adapted to the floating marine environment, taking into account peak-shifting power generation, efficiency improvement, and cost optimization. Attached Figure Description

[0025] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0026] Figure 1 This is a schematic diagram of the support system structure for offshore floating photovoltaic power generation with peak shifting and extension;

[0027] Figure 2 This is a side view of the support system for offshore floating photovoltaic power generation with peak shifting and extension.

[0028] Figure 3 This is a schematic diagram of the floating body structure in this utility model;

[0029] Figure 4 This is a schematic diagram of the inclined beam and purlin structure in this utility model;

[0030] Figure 5 This is a side view of the adjustment mechanism and related structures in this utility model.

[0031] In the diagram: 1. Float; 2. Column; 3. Inclined beam; 4. Adjustment mechanism; 5. Purlin; 6. Photovoltaic module; 7. Photosensitive sensor; 8. Control component; 101. Float; 102. Connecting column. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figures 1 to 5 As shown, this embodiment provides a support system for offshore floating photovoltaic power generation to extend peak hours, including:

[0035] A floating body 1, with multiple columns 2 fixedly connected side by side on both sides of the floating body 1, and an inclined beam 3 hinged to the upper end of the column 2;

[0036] Multiple adjustment mechanisms 4 are provided, corresponding to multiple inclined beams 3, for adjusting the rotation angle of the inclined beams 3 relative to the column 2, and keeping them fixed at a specific angle;

[0037] Multiple purlins 5 are arranged in parallel along the direction of the column 2 and are symmetrically fixed to the inclined beams 3 on both sides of the float 1;

[0038] Two sets of photovoltaic modules 6 are fixedly installed on the purlins 5 on both sides of the float 1. The two sets of photovoltaic modules 6 face due east and due west respectively, and the tilt angle changes with the tilt angle of the inclined beam 3.

[0039] Two sets of photovoltaic modules 6 face due east and due west respectively. Combined with the adjustment mechanism 4 to control the tilt angle, "time-of-use high-efficiency power generation" can be achieved: the eastern photovoltaic module 6 receives solar radiation from sunrise to noon in the morning, while the western photovoltaic module 6 receives solar radiation from noon to sunset in the afternoon. This avoids the limitation of existing technologies where photovoltaic modules 6 are concentrated facing south, resulting in "high peak power generation at noon and low power generation efficiency in the morning and evening," significantly extending the effective power generation time of the overall system. This peak-shifting design makes power generation more evenly distributed throughout the day, avoiding the grid pressure or reduced trading revenue caused by concentrated power supply at noon in the traditional model, thus improving the utilization efficiency and economic value of power resources. The adjustment mechanism 4 can flexibly adjust the tilt angle of the inclined beam 3 and the photovoltaic modules 6, and can track the maximum power in real time according to changes in the sun's position, enhancing the ability to capture sunlight at different times and improving the light energy conversion efficiency. Due to the east-west arrangement, the shadow distance between the front and rear modules is reduced, allowing for a relatively smaller size of the float 1. While ensuring power generation performance, this increases the utilization rate of the float 1's area, reduces the relative cost of the float 1, and improves the system's economics. The connection design of the floating body 1, column 2, inclined beam 3, purlin 5, and other structures provides stable support for the photovoltaic module 6, adapting to the usage requirements of the marine floating environment and ensuring the stability and reliability of the system under marine conditions. The overall structure is adapted to the marine floating environment, taking into account peak-shifting power generation, efficiency improvement, and cost optimization.

[0040] In some alternative embodiments, the float 1 includes two floats 101 arranged in parallel, and the ends of the two floats 101 are connected to each other by connecting posts 102; a plurality of posts 2 are fixedly attached to the two floats 101 in parallel.

[0041] The float 1 adopts a structure with two parallel floats 101 connected by connecting columns 102 and columns 2 fixed to the floats 101. The double float design enhances the overall buoyancy and stability in the marine environment, while the connecting columns 102 form a stable frame, which facilitates the parallel installation of multiple columns 2 to match the symmetrical arrangement of photovoltaic modules 6 on both sides. At the same time, due to the reasonable structural layout, the size of the float 1 is reduced, the relative cost is lowered, and the overall structure is conducive to stress balance, which meets the needs of floating at sea.

[0042] In some alternative implementations, the photovoltaic module 6 includes multiple sets of solar panels, each set of solar panels arranged side by side along the extension direction of the purlin 5.

[0043] The photovoltaic module 6 includes a structure in which multiple sets of solar panels are arranged side by side along the extension direction of the purlin 5. This structure not only increases the power generation capacity per unit area through the combination of multiple sets of solar panels, but also adapts to the overall east-west symmetrical layout due to the orderly arrangement along the purlin 5, reducing mutual shading between modules. At the same time, it is easy to connect stably with the purlin 5 and to adjust the angle of the solar panels as they rotate with the inclined beam 3, thereby improving the overall structure and power generation efficiency.

[0044] In some alternative implementations, the adjustment mechanism 4 is an electric telescopic rod, with one end hinged to the side of the column 2 and the other end hinged to the bottom of the inclined beam 3.

[0045] The adjustment mechanism 4 adopts an electric telescopic rod, with one end hinged to the side of the column 2 and the other end hinged to the bottom of the inclined beam 3. It can accurately and conveniently adjust the tilt angle of the inclined beam 3 and the photovoltaic module 6 through electric drive to adapt to changes in the sun's position. At the same time, the hinged method ensures the flexibility and stability of the angle adjustment, making it easy to realize real-time control of the angle of the photovoltaic module 6 and improve power generation efficiency.

[0046] In some alternative implementations, the adjustment mechanism 4 adjusts the angle range from 0 to 90 degrees.

[0047] With an adjustment range of 0-90 degrees, the photovoltaic module 6 can meet the needs of adapting to changes in solar altitude angle at different times. It can enhance light capture capability through large-angle adjustment at sunrise and sunset. At the same time, the wide range of angle adjustment, together with the east-west photovoltaic module 6, further optimizes the peak power generation effect and improves the power generation efficiency at different times of the day.

[0048] In some alternative implementations, each group of photovoltaic modules 6 has a photosensitive sensor 7 fixed at each of its four corners. The photosensitive sensor 7 is electrically connected to a control component 8. The photosensitive sensor 7 transmits the measured information to the control component 8. The control component 8 uniformly regulates multiple adjustment mechanisms 4 based on the information measured by the photosensitive sensor 7.

[0049] The system can sense the intensity and direction of light in real time through the photosensitive sensor 7, and transmit the information to the control component 8 to achieve precise and synchronous adjustment of the angle of the photovoltaic module 6. This ensures that the photovoltaic module 6 always receives light at the optimal angle, improves the efficiency of light energy utilization, and at the same time, unified control ensures the coordination of system operation and enhances the overall power generation stability.

[0050] In some alternative implementations, the photosensor 7 is a photoresistor.

[0051] In some alternative implementations, the control component 8 is a PLC or a microcontroller, fixed to the float 1.

[0052] The control logic and specific implementation process of control component 8 are as follows:

[0053] Photoresistors are installed at the four corners of the east-facing photovoltaic module 6 and the west-facing photovoltaic module 6. These sensors detect the irradiance at each corner in real time and convert it into a voltage signal. The stronger the irradiance, the lower the resistance of the photoresistor and the higher the output voltage. When the east-facing module receives sunlight in the morning, if the voltage of the photoresistor at the upper left corner is higher than that at the lower right corner, it indicates that the module is not directly facing the sun and there is an angular deviation. The signal is transmitted to the PLC control module 8. The PLC analyzes and determines the direction and magnitude of the deviation and sends an extension / retraction command to the electric telescopic rod adjustment mechanism 4 on the corresponding side. This drives the inclined beam 3 to rotate until the voltage at the four corners tends to be balanced and the deviation is ≤5%. At this time, the module angle is adapted to the current sun position. Similarly, when the west-facing module receives sunlight in the afternoon, the PLC adjusts the angle through the photoresistor signal using the same logic. At night or when there is insufficient sunlight, the system defaults to resetting the modules on both sides to the initial angle of the next day, with the east side slightly tilted east and the west side slightly tilted west. After the sunlight reaches the standard the next day, the real-time adjustment is restarted to achieve precise tracking of sunlight during peak power generation.

[0054] Any aspects of this utility model that are not detailed herein are conventional technical means known to those skilled in the art.

[0055] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A support system for offshore floating photovoltaic power generation with peak shaving and extension, characterized in that, include: A floating body (1) has multiple columns (2) fixedly connected side by side on both sides of the floating body (1), and an inclined beam (3) is hinged to the upper end of the column (2); Multiple adjustment mechanisms (4) are provided corresponding to multiple inclined beams (3) for adjusting the rotation angle of the inclined beams (3) relative to the column (2) and keeping them fixed at a specific angle; Multiple purlins (5) are arranged parallel to each other along the direction of the column (2) and are symmetrically fixed to the inclined beams (3) on both sides of the float (1); Two sets of photovoltaic modules (6) are fixedly installed on the purlins (5) on both sides of the float (1). The two sets of photovoltaic modules (6) face due east and due west respectively, and the tilt angle changes with the tilt angle of the inclined beam (3).

2. The support system for offshore floating photovoltaic peak-shaving and extended power generation according to claim 1, characterized in that: The float (1) includes two floats (101), which are arranged in parallel and connected to each other at their ends by connecting columns (102); a plurality of columns (2) are fixedly attached to the two floats (101) in parallel.

3. The support system for offshore floating photovoltaic peak-shaving and extended power generation according to claim 1, characterized in that: The photovoltaic module (6) includes multiple sets of solar panels, each set of solar panels being arranged side by side along the extension direction of the purlin (5).

4. The support system for offshore floating photovoltaic peak-shaving and extended power generation according to claim 1, characterized in that: The adjustment mechanism (4) is an electric telescopic rod. One end of the electric telescopic rod is hinged to the side of the column (2), and the other end is hinged to the bottom of the inclined beam (3).

5. The support system for offshore floating photovoltaic peak-shaving and extended power generation according to claim 4, characterized in that: The adjustment mechanism (4) has an adjustment angle range of 0-90 degrees.

6. The support system for offshore floating photovoltaic peak-shaving and extended power generation according to claim 1, characterized in that: Each photovoltaic module (6) has a photosensitive sensor (7) fixed at each of its four corners. The photosensitive sensor (7) is electrically connected to a control component (8). The photosensitive sensor (7) transmits the measured information to the control component (8). The control component (8) regulates multiple adjustment mechanisms (4) in a unified manner based on the information measured by the photosensitive sensor (7).

7. The support system for offshore floating photovoltaic peak-shifting extended power generation according to claim 6, characterized in that: The photosensitive sensor (7) is a photoresistor.

8. The support system for offshore floating photovoltaic peak-shifting extended power generation according to claim 6, characterized in that: The control component (8) is a PLC or a microcontroller, which is fixed to the float (1).

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