Wind-solar complementary power station
By integrating wind and photovoltaic power generation devices into one unit, sharing a concrete foundation, and optimizing the layout, the problem of uneven wind and solar power generation has been solved, achieving efficient resource complementarity and stable power output, thereby increasing the power generation and investment returns of the power plant.
Patent Information
- Application Number
- CN202422205646.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-09-09
AI Technical Summary
Wind and solar power generation capacity is greatly affected by factors such as weather, day and night, and seasons, resulting in large fluctuations in power output and difficulty in outputting stable power. This has a significant impact on the power grid, and independently deployed wind and solar power plants cannot fully utilize resource complementarity, increasing investment costs.
Design a wind-solar hybrid power station that organically integrates wind power generation and photovoltaic power generation devices, sharing a concrete foundation. The photovoltaic power generation device is located below the wind power generation device, with the photovoltaic panels arranged around the tower and the tilt angle adjustable. Combined with a distributed multi-element microgrid, it achieves resource complementarity and power supply balance.
Without increasing the land area occupied, it significantly improves the green electricity production capacity per unit area, enhances power generation and power supply balance, reduces installation and maintenance difficulty, and increases investment returns.
Smart Images
Figure CN223231089U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wind energy and photovoltaic power generation, in particular to a wind-solar complementary power station. Background Art
[0002] With the in-depth implementation of environmental protection and green development concepts around the world, new energy power generation technologies represented by wind power generation and photovoltaic power generation have developed rapidly. The power generation capacity has expanded from hundreds of watts to tens of megawatts. The installed cost per unit power has continued to decline, and the scale of application has increased rapidly. The total installed capacity of wind and solar power generation in China has exceeded the installed capacity of thermal power generation, becoming an important way of electricity production.
[0003] While wind and solar power can generate green electricity without generating greenhouse gas emissions, offering excellent environmental benefits, their power generation capacity is significantly affected by factors such as weather, daytime, and seasons. This leads to large fluctuations and imbalances in power generation, making it difficult to output stable electricity, significantly impacting the power grid and, in some cases, leading to power curtailment. Currently, supporting energy storage stations are often used to mitigate this imbalance to some extent, but this increases investment costs.
[0004] The conventional construction model of wind and solar power stations is generally to build wind power stations or photovoltaic power stations in areas with good wind or solar energy resources respectively. Wind turbines and photovoltaic power stations are generally arranged independently, and there is no complementary power supply method between the two, which cannot fully utilize the resource complementarity between the two power generation methods. Utility Model Content
[0005] In order to solve the problems in the above-mentioned background technology, the utility model provides a wind-solar complementary power station, which organically integrates wind power generation devices and photovoltaic power generation devices, so that the power station can output two types of green electricity, increase power generation, and significantly improve power supply balance.
[0006] The utility model adopts the following technical solutions:
[0007] A wind-solar complementary power station, comprising a concrete foundation and a wind power generation device and a photovoltaic power generation device arranged on the concrete foundation;
[0008] The wind power generation device includes a tower fixed on a concrete foundation and a wind turbine installed on the top of the tower. The driving end of the wind turbine is connected to a wind wheel.
[0009] The photovoltaic power generation device includes a photovoltaic bracket fixed on a concrete foundation and a photovoltaic panel installed on the photovoltaic bracket, and the photovoltaic panel is located below the wind wheel.
[0010] Furthermore, an inverter control cabinet and an energy storage battery pack are installed on the ground on one side of the concrete foundation, and the inverter control cabinet and the energy storage battery pack are both located below the photovoltaic panels.
[0011] Furthermore, the photovoltaic panels are arranged with the tower as the center, and the photovoltaic panels are in a square structure or a rectangular structure.
[0012] Furthermore, when the photovoltaic panel is a square structure, the side length thereof is not greater than the diameter of the wind wheel.
[0013] Furthermore, the angle between the photovoltaic panel and the horizontal plane is 5-30 degrees.
[0014] Furthermore, the concrete foundation is assembled from a plurality of foundation units.
[0015] Furthermore, the tower is a self-supporting tower column or a tie rod tower column.
[0016] Furthermore, the wind turbine is a horizontal axis wind turbine.
[0017] Furthermore, a plurality of connection holes are opened on the concrete foundation, and the tower and the photovoltaic support are connected in the connection holes through fixing parts.
[0018] Furthermore, it also includes a distributed multi-microgrid, which is electrically connected to the inverter control cabinet.
[0019] Compared with the prior art, the beneficial effects of the present invention are:
[0020] (1) The wind power generation device and the photovoltaic power generation device in this application share the same concrete foundation, and the photovoltaic power generation device is located below the wind power generation device. The arrangement is compact, which can make full use of land resources. Without significantly increasing the land occupation area, the complementary power supply of wind energy and solar energy is achieved, thereby greatly improving the green electricity production capacity per unit area.
[0021] (2) The photovoltaic power generation device in this application is arranged below the wind wheel, and the photovoltaic panels are arranged with the tower as the center, and the photovoltaic panels are square or rectangular structures, so as to fully utilize the area of the wind turbine installation area.
[0022] (3) In this application, the photovoltaic panels are tilted, and the angle between the photovoltaic panels and the horizontal plane is 5-30 degrees, which can capture more solar energy. A large tilt angle is used for low-power photovoltaic power generation devices, and a small tilt angle is used for high-power photovoltaic power generation devices, so as to control the installation height of the photovoltaic panels and reduce the difficulty of installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0024] Figure 1 A front view of a wind-solar hybrid power station provided in one embodiment of the present application;
[0025] Figure 2 This is a rear view of a wind-solar hybrid power station provided in one embodiment of the present application;
[0026] Figure 3 A side view of a wind-solar hybrid power station provided in one embodiment of the present application;
[0027] Figure 4 A front view of a wind-solar hybrid power station provided in another embodiment of the present application;
[0028] Figure 5 A rear view of a wind-solar hybrid power station provided in another embodiment of the present application;
[0029] Figure 6 A side view of a wind-solar hybrid power station provided in another embodiment of the present application;
[0030] Figure 7 A schematic diagram of the concrete foundation structure of a wind-solar hybrid power station provided in one embodiment of the present application;
[0031] Among them: 1-concrete foundation, 2-self-supporting tower, 3-wind turbine, 4-wind wheel, 5-photovoltaic bracket, 6-photovoltaic panel, 7-inverter control cabinet, 8-energy storage battery pack, 9-pull rod type tower, 10-pull rod, 11-foundation unit. DETAILED DESCRIPTION
[0032] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0033] The following is combined with Figure 1 To the attached Figure 7 And specific embodiments discuss the present invention in detail.
[0034] like Figure 1-7As shown, the utility model provides a wind-solar complementary power station, including a concrete foundation 1 and a wind power generation device and a photovoltaic power generation device arranged on the concrete foundation 1; the wind power generation device includes a tower fixed on the concrete foundation 1 and a wind turbine 3 arranged on the top of the tower, and the driving end of the wind turbine 3 is connected to a wind wheel 4; the photovoltaic power generation device includes a photovoltaic bracket 5 fixed on the concrete foundation 1 and a photovoltaic panel 6 installed on the photovoltaic bracket 5, and the photovoltaic panel 6 is located below the wind wheel 4.
[0035] It can be understood that in a natural environment with good wind energy resources, there are usually good solar energy resources. Solar energy and wind energy have different distribution patterns of strength in different time periods and seasons. For example, solar energy resources are abundant during the day and zero resources at night, while wind energy exists both day and night; in summer, monsoon resources are relatively weak, but solar energy is very abundant, and in spring, autumn and winter, solar energy is relatively insufficient, but wind energy is relatively abundant, reflecting the good complementarity between wind energy and solar energy. This application utilizes the above-mentioned complementary characteristics of wind energy and solar energy to invent a wind-solar complementary power station. This power station fully utilizes the time difference complementary characteristics of wind energy and solar energy by setting up wind power generation equipment and photovoltaic power generation equipment, and efficiently converts wind energy and solar energy into electrical energy, which can effectively alleviate the problem of unbalanced power generation and improve the quality of green electricity.
[0036] The wind-solar complementary power station of the present application realizes the organic integration of wind power generation devices and photovoltaic power generation devices in terms of structure, and realizes the ability of the power station to generate electricity using wind energy and solar energy in terms of function.
[0037] In some embodiments, see Figure 2 、 Figure 5 An inverter control cabinet 7 and an energy storage battery pack 8 are installed on the ground on one side of the concrete foundation 1. The inverter control cabinet 7 and the energy storage battery pack 8 are both located below the photovoltaic panel 6. From a structural perspective, the land area of the power station can be reduced, and the shielding effect of the photovoltaic panel 6 can be used to protect the inverter control cabinet 7 and the energy storage battery pack 8.
[0038] In some embodiments, the photovoltaic power generation device is arranged on the ground below the wind wheel 4. The photovoltaic panel 6 is arranged with the tower as the center, and the photovoltaic panel 6 is a square structure or a rectangular structure. When the photovoltaic panel 6 is a square structure, the side length of the photovoltaic panel 6 is not greater than the diameter of the wind wheel, so as to fully utilize the installation area of the wind turbine 3. In the present application, the photovoltaic panels 6 of the small-power photovoltaic power generation device preferably adopt a square photovoltaic panel arrangement, and the photovoltaic panels 6 of the high-power photovoltaic power generation device preferably adopt a rectangular photovoltaic panel arrangement to control the installation height of the photovoltaic panel 6 and reduce the difficulty of installation and maintenance. The rated power of the photovoltaic power generation device is equivalent to the rated power of the wind power generation device. In other words, the installed power of the wind-solar complementary power station of the present application can reach twice that of the wind power generation device, which can significantly improve the investment return of the power station.
[0039] In a preferred embodiment, the rated power of the wind power generation device is between 20-500 kW, and the rated power of the photovoltaic power generation device is 0.5-1.5 times the rated power of the wind power generation device.
[0040] In a specific embodiment, the angle between the photovoltaic panel 6 and the horizontal plane is 5-30°. In actual operation, it is necessary to select a suitable inclination angle of the photovoltaic panel 6 based on the geographical latitude of the installation of the wind-solar complementary power station and comprehensively consider the maintenance and installation costs in order to capture more solar energy. Generally speaking, a large inclination angle is used for a low-power photovoltaic power generation device, and a small inclination angle is used for a high-function photovoltaic power generation device. At this angle, the installation height of the photovoltaic panel 6 can be controlled, reducing the difficulty of installation and maintenance, while ensuring that the power generation efficiency of the photovoltaic panel 6 is less affected. The photovoltaic panel 6 in this application can adopt two methods: a fixed inclination angle or a variable inclination angle.
[0041] Specifically, for wind turbines with a rated power of no more than 200kW, prefabricated concrete foundations are preferred, and on-site cast concrete foundations can also be used. Prefabricated concrete foundations need to be prefabricated in a factory. The prefabricated concrete foundation of each wind turbine is assembled from multiple foundation units 11 (such as Figure 7 As shown). The size and weight of each basic unit 11 meet the transportation requirements, and multiple basic units 11 are assembled into an integral concrete foundation 1 at the installation site of the power station. Each basic unit 11 is provided with a number of bolt connection holes and slots, and the tower and photovoltaic bracket 5 are fixed to the concrete foundation 1 by bolts. The present application adopts a number of basic units 11 to be quickly assembled into an integral concrete foundation 1, which can ensure the quality of the foundation, greatly reduce the construction period of the foundation, and better adapt to the installation needs of wind turbines in various seasons, complex installation environments and harsh construction conditions. For wind turbines with a rated power greater than 200kW, an on-site cast-in-place concrete foundation is generally adopted. After the casting is completed, a number of bolt connection holes and slots will be opened on the concrete foundation, and the tower and photovoltaic bracket 5 are connected in the bolt connection holes and slots by bolts.
[0042] Specifically, the tower is a self-supporting tower column 2 or a tie-rod tower column 9, such as Figures 1 to 3 This is the structural diagram of the self-supporting tower column, such as Figures 4 to 6 This is a structural diagram of a tie-rod tower. This application preferably utilizes a tie-rod tower 9 to significantly reduce the tower diameter, minimize obstruction of the photovoltaic panels 6 by the tower's shadow, and lower tower manufacturing and transportation costs. The tie rods 10 of the tie-rod tower 9 are connected to the concrete foundation 1 and the photovoltaic support 5 of the photovoltaic power station. Optionally, the tie rods 11 of the tie-rod tower 9 in this application may be made of high-strength round steel or steel wire rope.
[0043] Preferably, the wind turbine 3 is a horizontal axis wind turbine.
[0044] The wind-solar hybrid power station described in this application can have a rated power range from tens of kilowatts to megawatts. The rated power of wind turbines is generally ≤500kW, and the rated power of photovoltaic turbines is generally ≤700kW. The integration of wind and photovoltaic power generation systems facilitates the operation and management of the power station and facilitates centralized maintenance and overhaul.
[0045] In addition, in order to give priority to the consumption of green electricity generated by complementary power stations and increase power generation revenue, wind-solar complementary power stations can be given priority as green power sources for distributed multi-dimensional microgrids. The generated green electricity is converted into direct current of a certain voltage through the inverter control system of the power station, transmitted to the DC bus of the multi-dimensional microgrid, and then supplied to various electrical equipment on site. The generated green electricity can also be transmitted to the power grid through the inverter control system of the power station.
[0046] The above further describes the present invention with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the present invention.
Claims
1. A wind-solar complementary power station, characterized in that: It includes a concrete foundation and a wind power generation device and a photovoltaic power generation device arranged on the concrete foundation; The wind power generation device includes a tower fixed on the concrete foundation and a wind turbine generator arranged on the top of the tower, and a driving end of the wind turbine generator is connected to a wind wheel; The photovoltaic power generation device includes a photovoltaic bracket fixed on the concrete foundation and a photovoltaic panel installed on the photovoltaic bracket, and the photovoltaic panel is located below the wind wheel.
2. The wind-solar hybrid power station according to claim 1, characterized in that: An inverter control cabinet and an energy storage battery pack are installed on the ground on one side of the concrete foundation, and the inverter control cabinet and the energy storage battery pack are both located below the photovoltaic panel.
3. The wind-solar hybrid power station according to claim 1, characterized in that: The photovoltaic panels are arranged with the tower as the center, and the photovoltaic panels are in a square structure or a rectangular structure.
4. The wind-solar hybrid power station according to claim 3, characterized in that: When the photovoltaic panel is a square structure, the side length thereof is not greater than the diameter of the wind wheel.
5. The wind-solar hybrid power station according to claim 1, characterized in that: The angle between the photovoltaic panel and the horizontal plane is 5-30 degrees.
6. The wind-solar hybrid power station according to claim 1, characterized in that: The concrete foundation is assembled from a plurality of foundation units.
7. The wind-solar hybrid power station according to claim 1, characterized in that: The tower is a self-supporting tower column or a tie rod tower column.
8. The wind-solar hybrid power station according to claim 1, characterized in that: The wind turbine is a horizontal axis wind turbine.
9. The wind-solar hybrid power station according to claim 1, characterized in that: A plurality of connection holes are formed on the concrete foundation, and the tower and the photovoltaic support are connected in the connection holes through fixing parts.
10. The wind-solar hybrid power station according to claim 2, characterized in that: It also includes a distributed multi-element microgrid, which is electrically connected to the inverter control cabinet.