Tower integrated concentrating photovoltaic wind-solar hybrid power supply system

Abstract

The utility model discloses a tower drum integrated light focusing photovoltaic's wind and light complementary energy supply system belongs to wind and light complementary technical field, including the wind power generation equipment that is composed of the tower drum of embedding on ground and the wind power generation component of setting in the tower drum top end, the outer circumference side of tower drum is pasted with the annular arrangement of multiple groups lightweight photovoltaic component, at least one circle annular light focusing array is arranged around the tower drum center on the ground, is used for focusing light energy to lightweight photovoltaic component, and the input end electric connection of lightweight photovoltaic component is through photovoltaic busbar and wind and light complementary controller, the input end electric connection of wind and light complementary controller still is with wind power generation component, and the output end electric connection of wind and light complementary controller is respectively with energy storage converter and power grid. Adopt above -mentioned one kind tower drum integrated light focusing photovoltaic's wind and light complementary energy supply system, through increasing lightweight photovoltaic component after light focusing of annular light focusing array, utilizes directional light focusing to strengthen the electric energy output capacity of wind and light complementary system.

Description

Technical Field

[0001] This utility model relates to the field of wind-solar hybrid technology, and in particular to a wind-solar hybrid energy supply system with tower-integrated concentrating photovoltaics. Background Technology

[0002] In recent years, driven by the continuous iteration and upgrading of renewable energy technologies, wind power, as a core component of the low-carbon energy system, has achieved rapid growth in industry scale and installed capacity, and has become an important support for the transformation of the global energy structure.

[0003] However, wind energy is inherently an intermittent energy source, and its resource endowment exhibits significant spatiotemporal heterogeneity: from a temporal perspective, wind speed fluctuates dynamically with the alternation of daytime hours and seasonal cycles; from a regional perspective, wind speed is significantly differentiated by topography (such as plains, mountains, and coastlines) and climate zones. This spatiotemporal heterogeneity directly results in wind power generation equipment only achieving its rated power generation efficiency within a specific wind speed range (typically 3-25 m / s), and it cannot continuously operate in an ideal state.

[0004] The intermittent nature of wind energy further leads to drastic fluctuations in wind power output. When wind speed deviates from the rated range, the power output fluctuates non-linearly with wind speed, resulting in significant uncertainty in the electrical energy received by the grid. When wind power is connected to the public grid on a large scale, the randomness and volatility of its output power will directly impact the frequency stability and voltage quality of the grid. Utility Model Content

[0005] The purpose of this invention is to provide a wind-solar hybrid power supply system with tower-integrated concentrated photovoltaics to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides a wind-solar hybrid power supply system integrating a tower-mounted concentrating photovoltaic system. The system comprises a wind power generation device consisting of a tower pre-embedded in the ground and wind power generation components mounted on the top of the tower. Multiple sets of lightweight photovoltaic components are affixed to the outer circumference of the tower in a ring arrangement. At least one ring-shaped concentrating array is arranged on the ground around the center of the tower to focus light energy onto the lightweight photovoltaic components. The lightweight photovoltaic components are electrically connected to the input terminal of a wind-solar hybrid controller via a photovoltaic combiner box. The input terminal of the wind-solar hybrid controller is also electrically connected to the wind power generation components. The output terminal of the wind-solar hybrid controller is electrically connected to an energy storage converter and the power grid, respectively.

[0007] Preferably, the annular focusing array is composed of multiple focusing components arranged uniformly in a ring. The focusing components include a support frame fixed on the ground, an integrally formed mounting block on the side of the support frame facing the tower, an arc-shaped mounting plate with an adjustable angle on the mounting block, and a focusing lens fixed on the arc-shaped mounting plate. The focusing lens is a concave lens, and the inner surface of the concave lens is in contact with the outer surface of the arc-shaped mounting plate.

[0008] Preferably, the mounting block has multiple positioning holes arranged in an arc or arc-shaped positioning holes; an angle adjustment plate is fixed on the outer surface of the arc-shaped mounting plate corresponding to the position of the mounting block, and the positioning screw passes through the angle adjustment plate and is positioned and connected to the positioning holes or arc-shaped positioning holes of the mounting block.

[0009] Preferably, the top of the support frame is also integrally formed with a fixing plate, and the fixing plate has fixing holes. The fixing screws pass through multiple arc-shaped connecting plates or annular connecting plates and are positioned and connected to the fixing holes on the fixing plates of multiple focusing components located in the same circle to form a single-ring annular focusing array.

[0010] Preferably, a first insulation layer is bonded to the outer wall of the tower with adhesive, and a second insulation layer is fixed to the inner wall of the tower. Spiral heat exchange tubes are installed in both the first and second insulation layers. The inlet and outlet ends of the spiral heat exchange tubes are connected to the waste heat recovery equipment after being merged through the return water manifold and the outlet water manifold, respectively. An electric three-way valve and a first circulation pump are installed in sequence on the return water manifold, and an electric three-way valve is installed on the outlet water manifold.

[0011] Preferably, the waste heat recovery equipment includes a hot water storage tank, a heat exchanger, and a user end. The heat exchange inlet end of the heat exchange coil of the hot water storage tank is connected to the long-circuit outlet end of the electric three-way valve, and the heat exchange outlet end of the heat exchange coil is connected to the inlet end of the return water manifold. The circulation outlet and circulation inlet of the hot water storage tank are connected to the heat exchange inlet and heat exchange outlet of the heat exchanger via circulation pipelines, respectively. The circulation outlet and circulation inlet of the heat exchanger are connected to the energy supply inlet and energy supply outlet of the user via energy supply pipelines, respectively. A second circulation pump and a third circulation pump are installed sequentially on the energy supply pipeline and the circulation pipeline.

[0012] Preferably, an electric three-way valve is installed between the outlet end of the two spiral heat exchange tubes and the heat exchange inlet end of the heat exchange coil, and between the inlet end of the two spiral heat exchange tubes and the heat exchange outlet end of the heat exchange coil. The two electric three-way valves are connected to the energy replenishment equipment via the energy replenishment pipeline.

[0013] Preferably, the energy replenishment equipment includes a fourth circulation pump, a heat pump unit, and a solar collector, which are sequentially arranged on the energy replenishment pipeline.

[0014] Preferably, temperature sensors are installed at the inlet and outlet ends of the spiral heat exchange tube and inside the hot water storage tank. The temperature sensors are connected to the input end of the main controller. The output end of the main controller is electrically connected to the heat pump unit, the electric three-way valve, the first circulation pump, the second circulation pump, the third circulation pump and the fourth circulation pump, respectively. The input end of the main controller is also connected to the water temperature and water level sensor installed inside the solar collector.

[0015] Therefore, the beneficial effects of this utility model employing the above-mentioned tower-integrated concentrated photovoltaic wind-solar hybrid energy supply system are as follows: 1. Improve land use efficiency and energy output per unit of land: Installing lightweight photovoltaic modules on the outer surface of wind turbine towers eliminates the need for additional land occupation, achieving "dual use of land"; at the same time, the ring-shaped concentrating array composed of multiple concentrating mirrors arranged around the bottom of the tower directionally increases the light density of the lightweight photovoltaic modules, making up for the limitation of the small photovoltaic capacity of a single tower, greatly increasing the total photovoltaic power generation, and significantly improving the energy output efficiency per unit of land; 2. By adopting the wind-solar complementary mode of "wind power generation + tower photovoltaic", combined with the effect of concentrators on photovoltaic power generation, the problem of unstable energy output caused by the intermittency and volatility of wind energy can be effectively balanced, the energy output fluctuation of the overall system can be smoothed, the impact on grid frequency and voltage can be reduced, the power supply reliability can be improved, and the stable operation pressure of large-scale wind power grid connection can be reduced. 3. Realize the recovery and utilization of photovoltaic waste heat and improve the overall energy efficiency: The heat energy generated during the photovoltaic module power generation process can be efficiently recovered to the hot water storage tank through two spiral heat exchange tubes embedded in the insulation layer arranged inside and outside the tower; the heat in the hot water storage tank is then transferred to the user end through the heat exchanger, converting the originally idle photovoltaic waste heat into terminal energy (such as heating, domestic hot water, production heat, etc.), avoiding energy waste and improving the overall energy utilization efficiency of the system; 4. Multiple energy supplementation systems work together to ensure energy supply stability: Solar collectors and heat pump units serve as energy supplementation systems for the hot water storage tank. When photovoltaic waste heat is insufficient (such as on cloudy days or at night), solar collectors can absorb solar radiation to supplement heat. When there is no solar radiation or when the load heat demand surges, the heat pump unit can absorb heat from the environment to supplement energy. The two work together to ensure that the hot water storage tank has sufficient heat, avoids interruption of energy supply to users, and ensures the stability of heat supply.

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a wind-solar complementary energy supply system with tower-integrated concentrating photovoltaic power generation according to the present invention. Figure 2This is a diagram showing the arrangement of a ring-shaped concentrating array in a wind-solar hybrid power supply system with integrated concentrating photovoltaic power generation in a tower, according to this utility model. Figure 3 This is a schematic diagram of the concentrating photovoltaic (PV) module structure of a wind-solar hybrid power supply system with tower-integrated concentrating photovoltaic power generation according to this utility model. Figure 4 This is a schematic diagram of the pipeline connection of a wind-solar complementary energy supply system with tower-integrated concentrating photovoltaic power generation according to the present invention.

[0018] Figure Labels 1. Wind power generation equipment; 11. Tower; 12. Wind power generation module; 2. Lightweight photovoltaic module; 3. Ring-shaped concentrator; 31. Support frame; 32. Mounting block; 33. Arc-shaped mounting plate; 34. Angle adjustment plate; 35. Positioning screw; 36. Fixing plate; 37. Arc-shaped connecting plate; 4. Photovoltaic combiner box; 5. Wind-solar hybrid controller; 6. Energy storage converter; 7. Waste heat recovery equipment; 71. Hot water storage tank; 711. Heat exchange coil; 72. Heat exchanger; 73. User end; 74. Second insulation layer; 75. Electric three-way valve; 76. First circulation pump; 77. Second circulation pump; 78. Third circulation pump; 79. Spiral heat exchange tube; 710. First insulation layer; 8. Energy replenishment equipment; 81. Fourth circulation pump; 82. Heat pump unit; 83. Solar collector; 9. Temperature sensor; 10. Main controller. Detailed Implementation

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, 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. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figures 1-4As shown, a wind-solar hybrid power supply system integrating concentrated photovoltaic (CPV) in a tower includes a wind power generation device 1 consisting of a tower 11 pre-embedded in the ground and wind power generation components 12 installed at the top of the tower 11. Multiple sets of lightweight photovoltaic components 2 are affixed to the outer circumference of the tower 11 in a ring arrangement. At least one ring-shaped concentrating array 3 is arranged on the ground around the center of the tower 11 to focus sunlight onto the lightweight photovoltaic components 2. The lightweight photovoltaic components 2 are electrically connected to the input terminal of a wind-solar hybrid controller 5 via a photovoltaic combiner box 4. The input terminal of the wind-solar hybrid controller 5 is also electrically connected to the wind power generation components 12. The output terminal of the wind-solar hybrid controller 5 is electrically connected to an energy storage converter and the power grid, respectively. In this embodiment, the wind-solar hybrid controller 5 is an MPPT master controller 10. The weight range of the lightweight photovoltaic components 2 is 6.7 kg / m² to 10.8 kg / m².

[0022] The annular focusing array 3 is composed of multiple focusing components arranged uniformly in a ring. The focusing components include a support frame 31 fixed on the ground, an integrally formed mounting block 32 on the side of the support frame 31 facing the tower 11, an arc-shaped mounting plate 33 with adjustable angle on the mounting block 32, and a focusing lens fixed on the arc-shaped mounting plate 33. The focusing lens is a concave lens, and the inner surface of the concave lens is in contact with the outer surface of the arc-shaped mounting plate 33.

[0023] The mounting block 32 has multiple positioning holes arranged in an arc shape or arc-shaped positioning holes; the outer surface of the arc-shaped mounting plate 33 is fixed with an angle adjustment plate 34 corresponding to the position of the mounting block, and the positioning screw 35 passes through the angle adjustment plate 34 and is positioned and connected with the positioning holes or arc-shaped positioning holes of the mounting block 32.

[0024] The top of the support frame 31 is also integrally formed with a fixing plate 36. The fixing plate 36 has fixing holes. After passing through multiple arc-shaped connecting plates 37 or annular connecting plates, the fixing screws are positioned and connected to the fixing holes on the fixing plates 36 of multiple light-concentrating components located in the same circle, so as to form a single-ring annular light-concentrating array 3.

[0025] A first insulation layer 710 is bonded to the outer wall of the tower 11 with adhesive. A second insulation layer 74 is fixed to the inner wall of the tower 11. Spiral heat exchange tubes 79 are installed in both the first insulation layer 710 and the second insulation layer 74. The inlet and outlet ends of the spiral heat exchange tubes 79 are connected to the waste heat recovery equipment 7 after being merged through the return water manifold and the outlet water manifold, respectively. An electric three-way valve 75 and a first circulation pump 76 are installed in sequence on the return water manifold, and an electric three-way valve 75 is installed on the outlet water manifold. The waste heat recovery equipment 7 includes a hot water storage tank 71, a heat exchanger 72, and a user terminal 73. The heat exchange inlet of the heat exchange coil 711 of the hot water storage tank 71 is connected to the long-connected outlet of the electric three-way valve 75, and the heat exchange outlet of the heat exchange coil 711 is connected to the inlet of the return water manifold. The circulation outlet and circulation inlet of the hot water storage tank 71 are connected to the heat exchange inlet and heat exchange outlet of the heat exchanger 72 respectively via circulation pipelines. The circulation outlet and circulation inlet of the heat exchanger 72 are connected to the energy supply inlet and energy supply outlet of the user terminal 73 respectively via energy supply pipelines. A second circulation pump 77 and a third circulation pump 78 are sequentially installed on the energy supply pipelines and circulation pipelines.

[0026] An electric three-way valve 75 is installed between the outlet end of the two spiral heat exchange tubes 79 and the heat exchange inlet end of the heat exchange coil, and between the inlet end of the two spiral heat exchange tubes 79 and the heat exchange outlet end of the heat exchange coil 711. The two electric three-way valves 75 are bypassed and connected to the energy replenishment equipment 8 via the energy replenishment pipeline. The energy replenishment equipment 8 includes a fourth circulation pump 81, a heat pump unit 82, and a solar collector 83, which are sequentially arranged on the energy replenishment pipeline.

[0027] Temperature sensors 9 are installed at the inlet and outlet ends of the spiral heat exchange tube 79 and inside the hot water storage tank 71. The temperature sensors 9 are connected to the input of the main controller 10. The output of the main controller 10 is electrically connected to the heat pump unit 82, the solar collector 83, the electric three-way valve 75, the first circulation pump 76, the second circulation pump 77, the third circulation pump 78, and the fourth circulation pump 81. The input of the main controller is also connected to the water temperature and water level sensor installed inside the solar collector.

[0028] It should be noted that the above electronic products are all mature products on the market. This embodiment only requires purchasing them and connecting them according to the instruction manual. Therefore, their circuit connection structure and principle will not be described in detail here.

[0029] Working method: The wind power generation component 12 captures wind energy and converts the kinetic energy of the wind into electrical energy; at the same time, the annular concentrating array 3 arranged around the tower 11 uses the concave lens to focus the light energy onto the multi-layer annular lightweight photovoltaic component 2 on the outer circumference of the tower 11, thereby increasing the light density of the photovoltaic component and enhancing its efficiency in converting solar energy into electrical energy (the lightweight photovoltaic component 2 is only laid to the lower part of the blades to avoid the blade rotation shading interference).

[0030] The electrical energy generated by the lightweight photovoltaic module 2 is combined by the photovoltaic combiner box 4 and then transmitted to the wind-solar hybrid controller 5 along with the electrical energy generated by the wind power generation module 12 to charge the grid. The waste heat generated during the power generation process of the lightweight photovoltaic module 2 is captured by the spiral heat exchange tube 79 embedded in the first insulation layer 710 outside the tower 11 and the second insulation layer 74 inside the tower 11. The heat exchange medium is driven by the first circulation pump 76 to circulate between the spiral heat exchange tube 79 and the heat exchange coil 711 of the hot water storage tank 71 to absorb the waste heat and transport it to the hot water storage tank 71. The heat exchange medium carrying the waste heat enters the heat exchange coil 711 inside the hot water storage tank 71 and transfers the heat to the water in the hot water storage tank 71, realizing the temporary storage of waste heat. The waste heat is then transferred to the user end 73 for use by the heat exchanger 72, thereby realizing the reuse of waste heat.

[0031] During the above process, the temperature of the heat exchange medium and the water temperature of the hot water storage tank 71 are collected in real time by temperature sensor 9, and the signal is transmitted to the main controller 10. Based on the feedback signal from temperature sensor 9, the main controller 10 regulates the electric three-way valve 75 on the pipeline between the spiral heat exchange tube 79 and the hot water storage tank 71: when the outlet temperature of the spiral heat exchange tube 79 reaches the set threshold, the electric three-way valve 75 keeps the passage between the spiral heat exchange tube 79 and the hot water storage tank 71 open, continuously recovering waste heat; if the temperature is below the threshold, the electric three-way valve 75 temporarily closes the passage, and reopens it after the photovoltaic waste heat accumulates to the target temperature, ensuring waste heat recovery efficiency. During the shutdown process, the energy replenishment device 8 is turned on to supplement heat to the user end 73.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A wind-solar hybrid power supply system integrating concentrated photovoltaic (CPV) in a tower, comprising a wind power generation device consisting of a tower pre-embedded in the ground and wind power generation components installed at the top of the tower, characterized in that: Multiple sets of lightweight photovoltaic modules are attached to the outer circumference of the tower in a ring arrangement. At least one ring-shaped concentrating array is arranged on the ground around the center of the tower to focus light energy onto the lightweight photovoltaic modules. The lightweight photovoltaic modules are electrically connected to the input terminal of the wind-solar hybrid controller via a photovoltaic combiner box. The input terminal of the wind-solar hybrid controller is also electrically connected to the wind power generation module. The output terminal of the wind-solar hybrid controller is electrically connected to the energy storage converter and the power grid, respectively.

2. The wind-solar hybrid power supply system with tower-integrated concentrated photovoltaics according to claim 1, characterized in that: The ring-shaped focusing array consists of multiple focusing components arranged uniformly in a ring. The focusing components include a support frame fixed on the ground, an integrally formed mounting block on the side of the support frame facing the tower, an adjustable arc-shaped mounting plate on the mounting block, and a focusing lens fixed on the arc-shaped mounting plate. The focusing lens is a concave lens, and the inner surface of the concave lens is in contact with the outer surface of the arc-shaped mounting plate.

3. The wind-solar hybrid power supply system with tower-integrated concentrated photovoltaics according to claim 2, characterized in that: The mounting block has multiple positioning holes arranged in an arc or arc-shaped positioning holes; an angle adjustment plate is fixed on the outer surface of the arc-shaped mounting plate corresponding to the position of the mounting block, and the positioning screw passes through the angle adjustment plate and is positioned and connected to the positioning holes or arc-shaped positioning holes of the mounting block.

4. A wind-solar hybrid power supply system with tower-integrated concentrated photovoltaics according to claim 2, characterized in that: The top of the support frame is also integrally formed with a fixing plate. The fixing plate has fixing holes. The fixing screws pass through multiple arc-shaped connecting plates or ring-shaped connecting plates and are positioned and connected to the fixing holes on the fixing plates of multiple focusing components located in the same circle to form a single-ring ring focusing array.

5. A wind-solar hybrid power supply system with tower-integrated concentrated photovoltaics according to claim 1, characterized in that: A first insulation layer is bonded to the outer wall of the tower with adhesive, and a second insulation layer is fixed to the inner wall of the tower. Spiral heat exchange tubes are installed in both the first and second insulation layers. The inlet and outlet ends of the spiral heat exchange tubes are connected to the waste heat recovery equipment after being merged by the return water manifold and the outlet water manifold, respectively. An electric three-way valve and a first circulation pump are installed in sequence on the return water manifold, and an electric three-way valve is installed on the outlet water manifold.

6. A wind-solar hybrid power supply system integrating tower-mounted concentrated photovoltaics according to claim 5, characterized in that: The waste heat recovery equipment includes a hot water storage tank, a heat exchanger, and a user end. The heat exchange inlet end of the heat exchange coil of the hot water storage tank is connected to the long-circuit outlet end of the electric three-way valve, and the heat exchange outlet end of the heat exchange coil is connected to the inlet end of the return water manifold. The circulation outlet and circulation inlet of the hot water storage tank are connected to the heat exchange inlet and heat exchange outlet of the heat exchanger via circulation pipelines, respectively. The circulation outlet and circulation inlet of the heat exchanger are connected to the energy supply inlet and energy supply outlet of the user via energy supply pipelines, respectively. A second circulation pump and a third circulation pump are installed sequentially on the energy supply pipeline and the circulation pipeline.

7. A wind-solar hybrid power supply system integrating tower-mounted concentrated photovoltaics according to claim 6, characterized in that: Electric three-way valves are installed between the outlet end of the two spiral heat exchange tubes and the heat exchange inlet end of the heat exchange coil, as well as between the inlet end of the two spiral heat exchange tubes and the heat exchange outlet end of the heat exchange coil. The two electric three-way valves are connected to the energy replenishment equipment via the energy replenishment pipeline.

8. A wind-solar hybrid power supply system with tower-integrated concentrated photovoltaics according to claim 7, characterized in that: The energy replenishment equipment includes a fourth circulation pump, a heat pump unit, and a solar collector, which are sequentially installed on the energy replenishment pipeline.

9. A wind-solar hybrid power supply system with tower-integrated concentrated photovoltaics according to claim 8, characterized in that: Temperature sensors are installed at the inlet and outlet ends of the spiral heat exchange tubes and inside the hot water storage tank. The temperature sensors are connected to the input of the main controller. The output of the main controller is electrically connected to the heat pump unit, the electric three-way valve, the first circulation pump, the second circulation pump, the third circulation pump, and the fourth circulation pump. The input of the main controller is also connected to the water temperature and water level sensor installed inside the solar collector.

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