Tilt adjustment method, device and medium

Abstract

The present invention discloses a tilt adjustment method, a tilt adjustment device and a computer-readable storage medium, which belong to the technical field of photovoltaic power generation. The method is applied to photovoltaic modules on the facade of a building, including: comparing the indoor illumination with the indoor lighting standard value to obtain a first comparison result of whether the indoor illumination meets the standard; dynamically adjusting the tilt angle of the photovoltaic module based on the first comparison result to maximize the power generation of the photovoltaic module. By adding indoor lighting factors to the tracking algorithm of a conventional photovoltaic tracking system, the indoor illumination is monitored and tracked by comparing the indoor illumination with the indoor lighting standard value, and by adjusting the tilt angle of the outdoor photovoltaic module, the maximum power generation is obtained while ensuring that the indoor lighting is at different illuminations, thereby achieving a balance between the power generation of the photovoltaic module on the facade of the building and the indoor lighting, which not only ensures the indoor lighting but also maximizes the power generation of the photovoltaic module.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and in particular to a tilt angle adjustment method, a tilt angle adjustment device and a computer-readable storage medium. Background Art

[0002] At present, when photovoltaic modules are combined with building facades or balcony scenes, photovoltaic modules need to receive as much light as possible, so there will be a situation where photovoltaic module power generation and indoor lighting compete for light resources. Conventional photovoltaic tracking algorithms only pursue maximum power generation. Therefore, in poor lighting conditions such as cloudy days, the tracking strategy with maximum power generation will block light from entering the room, further reducing indoor lighting. Summary of the invention

[0003] The main purpose of the present invention is to provide a tilt adjustment method, a tilt adjustment device and a computer-readable storage medium, aiming to solve the technical problem in the prior art that it is difficult to balance the power generation of photovoltaic components on the facade of a building and indoor lighting.

[0004] To achieve the above object, the present invention provides a tilt angle adjustment method, which is applied to photovoltaic modules on the facade of a building, comprising the following steps:

[0005] Comparing the indoor illumination with the indoor lighting standard value to obtain a first comparison result of whether the indoor illumination meets the standard;

[0006] The inclination angle of the photovoltaic module is dynamically adjusted based on the first comparison result to maximize the power generation of the photovoltaic module.

[0007] Optionally, the step of dynamically adjusting the inclination angle of the photovoltaic assembly based on the first comparison result includes:

[0008] If the first comparison result is that the indoor illumination meets the standard, dynamically adjusting the inclination angle of the photovoltaic module based on a second comparison result between the indoor illumination and a preset illumination threshold;

[0009] If the first comparison result is that the indoor illumination does not meet the standard, the theoretical maximum value of the indoor illumination is determined, and the inclination angle of the photovoltaic module is dynamically adjusted based on a third comparison result between the theoretical maximum value and the indoor lighting standard value.

[0010] Optionally, the step of dynamically adjusting the inclination angle of the photovoltaic assembly based on a second comparison result between the indoor illumination and a preset illumination threshold comprises:

[0011] If the second comparison result is that the indoor illuminance is not greater than the preset illuminance threshold, the target equivalent solar altitude angle of the photovoltaic component at the current moment is determined, and the target equivalent solar altitude angle is tracked to adjust the inclination angle of the photovoltaic component.

[0012] Optionally, the step of determining a target equivalent solar altitude angle at the location of the photovoltaic assembly at the current moment includes:

[0013] The solar altitude angle is calculated based on the latitude and declination of the location of the photovoltaic module and the solar hour angle at the current moment;

[0014] An initial equivalent solar altitude angle is calculated based on the solar altitude angle and the solar azimuth angle at the current position of the photovoltaic module;

[0015] The target equivalent solar altitude angle at the current moment is calculated based on the azimuth of the building facade and the initial equivalent solar altitude angle.

[0016] Optionally, the photovoltaic assembly includes a first assembly located directly above the building window and a second assembly located directly below the building window, and the step of dynamically adjusting the inclination angle of the photovoltaic assembly based on a second comparison result between the indoor illumination and a preset illumination threshold comprises:

[0017] If the second comparison result is that the indoor illuminance is greater than the preset illuminance threshold, determine the target equivalent solar altitude angle of the first component at the current moment, and track the target equivalent solar altitude angle to adjust the inclination angle of the first component; rotate the second component upward until the indoor illuminance is reduced to the indoor lighting standard value.

[0018] Optionally, after the step of rotating the second component upward until the indoor illumination is reduced to the indoor lighting standard value, the method further includes:

[0019] If the indoor illumination is less than the indoor lighting standard value, the target equivalent solar altitude angle is tracked to adjust the inclination angle of the second component.

[0020] Optionally, the step of determining the theoretical maximum value of the indoor illumination includes:

[0021] Determine the length of the shadow generated by the photovoltaic assembly at the current moment according to the length of the photovoltaic assembly, the inclination angle of the photovoltaic assembly at the current moment, and the target equivalent solar altitude angle at the location;

[0022] The theoretical maximum value is determined according to the shadow length, the length of the photovoltaic assembly and the indoor illumination at the current moment.

[0023] Optionally, the step of dynamically adjusting the inclination angle of the photovoltaic assembly based on the third comparison result between the theoretical maximum value and the indoor lighting standard value includes:

[0024] If the third comparison result is that the theoretical maximum value is not greater than the indoor lighting standard value, the target equivalent solar altitude angle of the photovoltaic component at the current moment is determined, and the target equivalent solar altitude angle is tracked to adjust the inclination angle of the photovoltaic component.

[0025] Optionally, the step of dynamically adjusting the inclination angle of the photovoltaic assembly based on the third comparison result between the theoretical maximum value and the indoor lighting standard value includes:

[0026] If the third comparison result is that the theoretical maximum value is greater than the indoor lighting standard value, then determine the illumination change of the indoor illumination after rotating the photovoltaic module by a preset angle in the positive direction and the reverse direction, and take the direction with the larger illumination change as the actual rotation direction;

[0027] The photovoltaic assembly is rotated according to the actual rotation direction until the indoor illumination reaches the indoor lighting standard value.

[0028] Optionally, after the step of rotating the photovoltaic assembly according to the actual rotation direction until the indoor illumination reaches the indoor lighting standard value, the method further includes:

[0029] If the indoor illumination is greater than the indoor lighting standard value, the target equivalent solar altitude angle of the photovoltaic component at the current moment is determined, and the target equivalent solar altitude angle is tracked to adjust the inclination angle of the photovoltaic component.

[0030] In addition, to achieve the above-mentioned purpose, the present invention also provides a tilt adjustment device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the tilt adjustment method as described in any one of the above items.

[0031] In addition, to achieve the above-mentioned purpose, the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the tilt angle adjustment method described above are implemented.

[0032] An embodiment of the present invention proposes a tilt adjustment method, a tilt adjustment device and a computer-readable storage medium. The method is applied to photovoltaic modules on the facade of a building, and includes the following steps: comparing the indoor illumination with the indoor lighting standard value to obtain a first comparison result of whether the indoor illumination meets the standard; dynamically adjusting the tilt angle of the photovoltaic module based on the first comparison result to maximize the power generation of the photovoltaic module.

[0033] By adding indoor lighting factors to the tracking algorithm of conventional photovoltaic tracking systems, the indoor illumination is monitored and tracked by comparing the indoor illumination with the indoor lighting standard value. At the same time, by adjusting the inclination angle of outdoor photovoltaic modules, the maximum power generation is achieved under different illumination conditions while ensuring indoor lighting. This achieves a balance between the power generation of photovoltaic modules on the building facade and indoor lighting, ensuring both indoor lighting and maximizing the power generation of photovoltaic modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of the operating device of the hardware operating environment involved in the embodiment of the present invention;

[0035] Figure 2 It is a schematic diagram of a flow chart of an embodiment of a tilt angle adjustment method of the present invention;

[0036] Figure 3 It is a YOZ cross-sectional view of a building facade involved in an embodiment of a tilt angle adjustment method of the present invention;

[0037] Figure 4 It is a schematic diagram of a tracking strategy involved in an embodiment of a tilt angle adjustment method of the present invention;

[0038] Figure 5 It is a schematic diagram of an equivalent solar altitude angle involved in an embodiment of a tilt angle adjustment method of the present invention;

[0039] Figure 6 It is a YOZ cross-sectional view of a building facade when the indoor illumination reaches the standard according to an embodiment of a tilt angle adjustment method of the present invention;

[0040] Figure 7 It is a YOZ cross-sectional view of a building facade when the indoor illumination does not meet the standard according to an embodiment of a tilt angle adjustment method of the present invention.

[0041] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0043] Reference Figure 1 , Figure 1 It is a schematic diagram of the structure of the operating equipment of the hardware operating environment involved in the embodiment of the present invention.

[0044] like Figure 1As shown, the operating device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Disp l ay), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (WI re less-FI de l ity, WI-FI) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM) memory, or a stable non-volatile memory (Non-Volume ile Memory, NVM), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0045] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation on the operating device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0046] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a data storage module, a network communication module, a user interface module and a computer program.

[0047] exist Figure 1 In the running device shown, the network interface 1004 is mainly used for data communication with other devices; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the running device of the present invention can be set in the running device, and the running device calls the computer program stored in the memory 1005 through the processor 1001, and performs the following operations:

[0048] Comparing the indoor illumination with the indoor lighting standard value to obtain a first comparison result of whether the indoor illumination meets the standard;

[0049] The inclination angle of the photovoltaic module is dynamically adjusted based on the first comparison result to maximize the power generation of the photovoltaic module.

[0050] Further, the processor 1001 may call the computer program stored in the memory 1005 and perform the following operations:

[0051] The step of dynamically adjusting the inclination angle of the photovoltaic assembly based on the first comparison result includes:

[0052] If the first comparison result is that the indoor illumination meets the standard, dynamically adjusting the inclination angle of the photovoltaic module based on a second comparison result between the indoor illumination and a preset illumination threshold;

[0053] If the first comparison result is that the indoor illumination does not meet the standard, the theoretical maximum value of the indoor illumination is determined, and the inclination angle of the photovoltaic module is dynamically adjusted based on a third comparison result between the theoretical maximum value and the indoor lighting standard value.

[0054] Further, the processor 1001 may call the computer program stored in the memory 1005 and perform the following operations:

[0055] The step of dynamically adjusting the inclination angle of the photovoltaic assembly based on a second comparison result between the indoor illumination and a preset illumination threshold comprises:

[0056] If the second comparison result is that the indoor illuminance is not greater than the preset illuminance threshold, the target equivalent solar altitude angle of the photovoltaic component at the current moment is determined, and the target equivalent solar altitude angle is tracked to adjust the inclination angle of the photovoltaic component.

[0057] Further, the processor 1001 may call the computer program stored in the memory 1005 and perform the following operations:

[0058] The step of determining the target equivalent solar altitude angle at the current moment of the location of the photovoltaic assembly comprises:

[0059] The solar altitude angle is calculated based on the latitude and declination of the location of the photovoltaic module and the solar hour angle at the current moment;

[0060] An initial equivalent solar altitude angle is calculated based on the solar altitude angle and the solar azimuth angle at the current position of the photovoltaic module;

[0061] The target equivalent solar altitude angle at the current moment is calculated based on the azimuth of the building facade and the initial equivalent solar altitude angle.

[0062] Further, the processor 1001 may call the computer program stored in the memory 1005 and perform the following operations:

[0063] The photovoltaic assembly includes a first assembly located directly above the building window and a second assembly located directly below the building window, and the step of dynamically adjusting the inclination angle of the photovoltaic assembly based on a second comparison result between the indoor illumination and a preset illumination threshold comprises:

[0064] If the second comparison result is that the indoor illuminance is greater than the preset illuminance threshold, determine the target equivalent solar altitude angle of the first component at the current moment, and track the target equivalent solar altitude angle to adjust the inclination angle of the first component; rotate the second component upward until the indoor illuminance is reduced to the indoor lighting standard value.

[0065] Further, the processor 1001 may call the computer program stored in the memory 1005 and perform the following operations:

[0066] After the step of rotating the second component upward until the indoor illumination is reduced to the indoor lighting standard value, the method further includes:

[0067] If the indoor illumination is less than the indoor lighting standard value, the target equivalent solar altitude angle is tracked to adjust the inclination angle of the second component.

[0068] Further, the processor 1001 may call the computer program stored in the memory 1005 and perform the following operations:

[0069] The step of determining the theoretical maximum value of the indoor illumination comprises:

[0070] Determine the length of the shadow generated by the photovoltaic assembly at the current moment according to the length of the photovoltaic assembly, the inclination angle of the photovoltaic assembly at the current moment, and the target equivalent solar altitude angle at the location;

[0071] The theoretical maximum value is determined according to the shadow length, the length of the photovoltaic assembly and the indoor illumination at the current moment.

[0072] Further, the processor 1001 may call the computer program stored in the memory 1005 and perform the following operations:

[0073] The step of dynamically adjusting the inclination angle of the photovoltaic assembly based on the third comparison result between the theoretical maximum value and the indoor lighting standard value comprises:

[0074] If the third comparison result is that the theoretical maximum value is not greater than the indoor lighting standard value, the target equivalent solar altitude angle of the photovoltaic component at the current moment is determined, and the target equivalent solar altitude angle is tracked to adjust the inclination angle of the photovoltaic component.

[0075] Further, the processor 1001 may call the computer program stored in the memory 1005 and perform the following operations:

[0076] The step of dynamically adjusting the inclination angle of the photovoltaic assembly based on the third comparison result between the theoretical maximum value and the indoor lighting standard value comprises:

[0077] If the third comparison result is that the theoretical maximum value is greater than the indoor lighting standard value, then determine the illumination change of the indoor illumination after rotating the photovoltaic module by a preset angle in the positive direction and the reverse direction, and take the direction with the larger illumination change as the actual rotation direction;

[0078] The photovoltaic assembly is rotated according to the actual rotation direction until the indoor illumination reaches the indoor lighting standard value.

[0079] Further, the processor 1001 may call the computer program stored in the memory 1005 and perform the following operations:

[0080] After the step of rotating the photovoltaic assembly according to the actual rotation direction until the indoor illumination reaches the indoor lighting standard value, the method further includes:

[0081] If the indoor illumination is greater than the indoor lighting standard value, the target equivalent solar altitude angle of the photovoltaic component at the current moment is determined, and the target equivalent solar altitude angle is tracked to adjust the inclination angle of the photovoltaic component.

[0082] Reference Figure 2 , Figure 2 The figure is a flow chart of an embodiment of a tilt angle adjustment method of the present invention. The embodiment of the present invention provides a tilt angle adjustment method. In this embodiment, the tilt angle adjustment method is applied to a photovoltaic module on a building facade, comprising:

[0083] Step S10: Compare the indoor illumination with the indoor lighting standard value to obtain a first comparison result of whether the indoor illumination meets the standard;

[0084] Step S20: dynamically adjusting the inclination angle of the photovoltaic module based on the first comparison result to maximize the power generation of the photovoltaic module.

[0085] Reference Figure 3 , Figure 3 is a YOZ cross-sectional view of the building facade involved in the embodiment of the present invention. pv , the inclination angle of the photovoltaic module is θ, the adjustable angle range of the inclination angle is [0, 180°], the window height is L, the azimuth angle of the building facade is λ (clockwise is positive), and the shadow length of the shadow generated by the photovoltaic module falling on the window is x. Among them, the photovoltaic tracking system can be a single-axis tracking system or a dual-axis tracking system. Preferably, in this embodiment, a single-axis tracking system is used to simplify the control.

[0086] The "Architectural Lighting Design Standard" GB50033-2013 requires that the natural light illumination of bedrooms and living rooms (halls) of residential buildings should not be less than 300lx, that is, the indoor lighting standard value is 300lx. In this embodiment, the preset illumination threshold is greater than the indoor lighting standard value, and is a preset multiple of the indoor lighting standard value. The specific multiple and the method for determining the multiple are not limited in this implementation. Because in the case of excessive light, when the inclination angle of the photovoltaic module is too small, a large amount of light will still enter the room, resulting in excessive indoor light and affecting the user's life and rest, so the preset illumination threshold is set.

[0087] Lux meters are installed indoors and outdoors to collect indoor and outdoor illuminance. By comparing with the indoor lighting standard value, it is possible to determine whether the indoor illuminance meets the standard, thereby obtaining a first comparison result and dynamically adjusting the inclination angle of the photovoltaic module based on the first comparison result, thereby maximizing the power generation of the photovoltaic module.

[0088] Optionally, the step of dynamically adjusting the inclination angle of the photovoltaic assembly based on the first comparison result includes:

[0089] If the first comparison result is that the indoor illumination meets the standard, dynamically adjusting the inclination angle of the photovoltaic module based on a second comparison result between the indoor illumination and a preset illumination threshold;

[0090] If the first comparison result is that the indoor illumination does not meet the standard, the theoretical maximum value of the indoor illumination is determined, and the inclination angle of the photovoltaic module is dynamically adjusted based on a third comparison result between the theoretical maximum value and the indoor lighting standard value.

[0091] Reference Figure 4 If the first comparison result shows that the indoor illumination meets the standard, the inclination angle of the photovoltaic module is dynamically adjusted based on the second comparison result of the indoor illumination and the preset illumination threshold. If the first comparison result shows that the indoor illumination does not meet the standard, the theoretical maximum value of the indoor illumination is determined, and the inclination angle of the photovoltaic module is dynamically adjusted based on the third comparison result of the theoretical maximum value and the indoor lighting standard value.

[0092] Optionally, the step of determining the theoretical maximum value of the indoor illumination includes:

[0093] Determine the length of the shadow generated by the photovoltaic assembly at the current moment according to the length of the photovoltaic assembly, the inclination angle of the photovoltaic assembly at the current moment, and the target equivalent solar altitude angle at the location;

[0094] The theoretical maximum value is determined according to the shadow length, the length of the photovoltaic assembly and the indoor illumination at the current moment.

[0095] Reference Figure 3, the current indoor illumination is Φ, and the shadow length x of the shadow cast by the photovoltaic module on the window at any time is:

[0096]

[0097] In the default scenario where the photovoltaic modules follow the sunlight at right angles,

[0098] x=L pv ·secθ-L pv

[0099] The maximum indoor illumination is:

[0100]

[0101] In this embodiment, the tilt adjustment method is applied to the photovoltaic modules on the facade of the building, including the following steps: comparing the indoor illumination with the indoor lighting standard value to obtain a first comparison result of whether the indoor illumination meets the standard; dynamically adjusting the tilt angle of the photovoltaic module based on the first comparison result to maximize the power generation of the photovoltaic module. By adding the indoor lighting factor to the tracking algorithm of the conventional photovoltaic tracking system, the indoor illumination is monitored and tracked by comparing the indoor illumination with the indoor lighting standard value, and by adjusting the tilt angle of the outdoor photovoltaic module, the maximum power generation is obtained under different illuminations of the indoor lighting, thereby achieving a balance between the power generation of the photovoltaic modules on the facade of the building and the indoor lighting, which not only ensures the indoor lighting but also maximizes the power generation of the photovoltaic modules.

[0102] Furthermore, in another embodiment of a tilt angle adjustment method of the present invention, the step of dynamically adjusting the tilt angle of the photovoltaic module based on a second comparison result between the indoor illumination and a preset illumination threshold comprises:

[0103] If the second comparison result is that the indoor illuminance is not greater than the preset illuminance threshold, the target equivalent solar altitude angle of the photovoltaic component at the current moment is determined, and the target equivalent solar altitude angle is tracked to adjust the inclination angle of the photovoltaic component.

[0104] If the second comparison result is that the indoor illumination is not greater than the preset illumination threshold, the target equivalent solar altitude angle of the photovoltaic component at the current moment is determined, and the target equivalent solar altitude angle is tracked to adjust the inclination angle of the photovoltaic component.

[0105] Optionally, the step of determining the target equivalent solar altitude angle of the photovoltaic assembly at the current moment includes:

[0106] The solar altitude angle is calculated based on the latitude and declination of the location of the photovoltaic module and the solar hour angle at the current moment;

[0107] An initial equivalent solar altitude angle is calculated based on the solar altitude angle and the solar azimuth angle at the current position of the photovoltaic module;

[0108] The target equivalent solar altitude angle at the current moment is calculated based on the azimuth of the building facade and the initial equivalent solar altitude angle.

[0109] Among them, optical detection technology can be used, that is, an optical detection sensor is used to monitor the movement direction of the sun to determine the target equivalent solar altitude angle, and then the support system is controlled to track the movement of the sun. The target equivalent solar altitude angle can also be determined by calculating the trajectory of the sun. Preferably, in this embodiment, in order to reduce costs, the method of calculating the trajectory of the sun's movement is used to determine the target equivalent solar altitude angle.

[0110] Reference Figure 5 , where the solar altitude angle is α, the solar azimuth angle is β, and the equivalent solar altitude angle of sunlight on the building facade section is γ.

[0111] 1. Calculation of declination angle δ:

[0112]

[0113] , where n is the total number of days from New Year's Day to the calculation day.

[0114] 2. True solar time ST calculation:

[0115] ST = local clock time t (Beijing time) – (120°-local longitude)*4 minutes + ET, where ET is the time difference.

[0116] 3. Calculation of solar hour angle ω:

[0117] ω=15°×(ST-12)

[0118] 4. Calculation of solar altitude angle α:

[0119] sinα=sinφ·sinδ+cosφ·cosδ·cosω, where φ is the latitude.

[0120] 5. Calculation of solar azimuth angle β:

[0121] sinβ=cosδ·sinω / cosα

[0122] 6. The initial equivalent solar altitude angle of sunlight on the building facade section is γ:

[0123] γ=tan -1 (secβ·tanα)

[0124] 7. The corrected target equivalent solar altitude angle is:

[0125] γ=tan -1 (sec(β+λ)·tanα)

[0126] Reference Figure 3 When the photovoltaic module inclination angle is θ = γ, the photovoltaic module is at right angles to the sunlight, and the photovoltaic module generates the highest power at this time. Therefore, as the solar altitude changes every day, by adjusting the photovoltaic module inclination angle θ = tan -1 (sec(β+λ)·tanα), so that the photovoltaic system tracking on the building facade is always perpendicular to the solar altitude angle.

[0127] If the light comes from lighting fixtures (low outdoor illumination), or the light comes from outdoor natural light (high outdoor illumination), but the indoor illumination does not exceed the set illumination threshold, then the photovoltaic system adopts the above photovoltaic module inclination angle θ = tan -1 (sec(β+λ)·tanα) for single-axis tracking.

[0128] Further, refer to Figure 6 In another embodiment of a tilt adjustment method of the present invention, the photovoltaic assembly includes a first assembly located directly above the building window and a second assembly located directly below the building window, and the step of dynamically adjusting the tilt of the photovoltaic assembly based on the second comparison result between the indoor illumination and the preset illumination threshold comprises:

[0129] If the second comparison result is that the indoor illuminance is greater than the preset illuminance threshold, determine the target equivalent solar altitude angle of the first component at the current moment, and track the target equivalent solar altitude angle to adjust the inclination angle of the first component; rotate the second component upward until the indoor illuminance is reduced to the indoor lighting standard value.

[0130] If the light comes from outdoor natural light (high outdoor illumination) and the indoor illumination exceeds the set illumination threshold (too strong light), the first component directly above the building window is still tilted at an angle of θ = tan -1 (sec(β+λ)·tanα) performs single-axis tracking, and the second component directly below the window rotates upward until a shadow is cast on the window and the indoor illumination is reduced to the indoor lighting standard value. At this time, the shadow length is x2 and the inclination angle of the photovoltaic array is θ′.

[0131] Optionally, after the step of rotating the second component upward until the indoor illumination is reduced to the indoor lighting standard value, the method further includes:

[0132] If the indoor illumination is less than the indoor lighting standard value, the target equivalent solar altitude angle is tracked to adjust the inclination angle of the second component.

[0133] If the subsequent indoor illumination decreases, the inclination angle θ′ of the second component directly below the window is reduced until θ′=γ, then the second component directly below the window no longer casts a shadow on the window, and θ=tan -1 Inclination tracking of (sec(β+λ)·tanα).

[0134] Further, refer to Figure 7 In another embodiment of the tilt angle adjustment method of the present invention, the step of dynamically adjusting the tilt angle of the photovoltaic module based on the third comparison result between the theoretical maximum value and the indoor lighting standard value includes:

[0135] If the third comparison result is that the theoretical maximum value is not greater than the indoor lighting standard value, the target equivalent solar altitude angle of the photovoltaic component at the current moment is determined, and the target equivalent solar altitude angle is tracked to adjust the inclination angle of the photovoltaic component.

[0136] If the theoretical maximum Φ max <Indoor lighting standard value, outdoor natural light can no longer meet the indoor illumination, then the photovoltaic system still uses the above photovoltaic module inclination angle θ = tan -1 (sec(β+λ)·tanα) for single-axis tracking.

[0137] Optionally, the step of dynamically adjusting the inclination angle of the photovoltaic assembly based on the third comparison result between the theoretical maximum value and the indoor lighting standard value includes:

[0138] If the third comparison result is that the theoretical maximum value is greater than the indoor lighting standard value, then determine the illumination change of the indoor illumination after rotating the photovoltaic module by a preset angle in the positive direction and the reverse direction, and take the direction with the larger illumination change as the actual rotation direction;

[0139] The photovoltaic assembly is rotated according to the actual rotation direction until the indoor illumination reaches the indoor lighting standard value.

[0140] If the theoretical maximum Φ max ≥Indoor lighting standard value, the predicted illumination can meet the standard. Then it is necessary to rotate the photovoltaic module upward and downward by a preset angle Δθ based on the current θ tilt angle, and detect the change in indoor illumination. If the indoor illumination change increases the most when the photovoltaic module is rotated upward, then continue to increase the tilt angle of the photovoltaic module until the indoor illumination just meets the standard at a certain tilt angle, and vice versa.

[0141] Optionally, after the step of rotating the photovoltaic assembly according to the actual rotation direction until the indoor illumination reaches the indoor lighting standard value, the step further includes:

[0142] If the indoor illumination is greater than the indoor lighting standard value, the target equivalent solar altitude angle of the photovoltaic component at the current moment is determined, and the target equivalent solar altitude angle is tracked to adjust the inclination angle of the photovoltaic component.

[0143] If the indoor illumination continues to decrease, the above steps of rotating the photovoltaic module in the actual rotation direction until the indoor illumination reaches the indoor lighting standard value are repeated, and the indoor illumination is preferably close to the indoor lighting standard value. If the indoor illumination increases to a value greater than the indoor lighting standard value, the photovoltaic module is rotated to the γ value under the condition of ensuring the indoor illumination, and the tilt angle θ=tan -1 (sec(β+λ)·tanα) performs single-axis tracking to increase the power generation of photovoltaic modules.

[0144] In addition, an embodiment of the present invention further provides a tilt adjustment device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the tilt adjustment method described above.

[0145] In addition, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the tilt angle adjustment method described above are implemented.

[0146] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0147] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0148] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0149] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for adjusting the inclination angle, characterized in that: Photovoltaic modules applied to the facade of a building include the following steps: Comparing the indoor illumination with the indoor lighting standard value to obtain a first comparison result of whether the indoor illumination meets the standard; wherein the indoor lighting standard value is the building natural light illumination standard value in the building lighting design standard; Dynamically adjusting the inclination angle of the photovoltaic module based on the first comparison result to maximize the power generation of the photovoltaic module while ensuring indoor lighting; The step of dynamically adjusting the inclination angle of the photovoltaic assembly based on the first comparison result includes: If the first comparison result is that the indoor illumination meets the standard, dynamically adjusting the inclination angle of the photovoltaic module based on a second comparison result between the indoor illumination and a preset illumination threshold; If the first comparison result is that the indoor illumination does not meet the standard, determining the theoretical maximum value of the indoor illumination, and dynamically adjusting the inclination angle of the photovoltaic module based on a third comparison result of the theoretical maximum value and the indoor lighting standard value; The step of determining the theoretical maximum value of the indoor illumination comprises: Determine the length of the shadow generated by the photovoltaic assembly at the current moment according to the length of the photovoltaic assembly, the inclination angle of the photovoltaic assembly at the current moment, and the target equivalent solar altitude angle at the location; The theoretical maximum value is determined according to the shadow length, the length of the photovoltaic assembly and the indoor illumination at the current moment.

2. The tilt angle adjustment method according to claim 1, characterized in that: The step of dynamically adjusting the inclination angle of the photovoltaic assembly based on a second comparison result between the indoor illumination and a preset illumination threshold comprises: If the second comparison result is that the indoor illuminance is not greater than the preset illuminance threshold, the target equivalent solar altitude angle of the photovoltaic component at the current moment is determined, and the target equivalent solar altitude angle is tracked to adjust the inclination angle of the photovoltaic component.

3. The tilt angle adjustment method according to claim 2, characterized in that: The step of determining the target equivalent solar altitude angle at the current moment of the location of the photovoltaic assembly comprises: The solar altitude angle is calculated based on the latitude and declination of the location of the photovoltaic module and the solar hour angle at the current moment; An initial equivalent solar altitude angle is calculated based on the solar altitude angle and the solar azimuth angle at the current position of the photovoltaic module; The target equivalent solar altitude angle at the current moment is calculated based on the azimuth of the building facade and the initial equivalent solar altitude angle.

4. The tilt angle adjustment method according to claim 1, characterized in that: The photovoltaic assembly includes a first assembly located directly above the building window and a second assembly located directly below the building window, and the step of dynamically adjusting the inclination angle of the photovoltaic assembly based on a second comparison result between the indoor illumination and a preset illumination threshold comprises: If the second comparison result is that the indoor illuminance is greater than the preset illuminance threshold, determine the target equivalent solar altitude angle of the first component at the current moment, and track the target equivalent solar altitude angle to adjust the inclination angle of the first component; rotate the second component upward until the indoor illuminance is reduced to the indoor lighting standard value.

5. The tilt angle adjustment method according to claim 4, characterized in that: After the step of rotating the second component upward until the indoor illumination is reduced to the indoor lighting standard value, the method further includes: If the indoor illumination is less than the indoor lighting standard value, the target equivalent solar altitude angle is tracked to adjust the inclination angle of the second component.

6. The tilt angle adjustment method according to claim 1, characterized in that: The step of dynamically adjusting the inclination angle of the photovoltaic assembly based on the third comparison result between the theoretical maximum value and the indoor lighting standard value comprises: If the third comparison result is that the theoretical maximum value is not greater than the indoor lighting standard value, the target equivalent solar altitude angle of the photovoltaic component at the current moment is determined, and the target equivalent solar altitude angle is tracked to adjust the inclination angle of the photovoltaic component.

7. The tilt angle adjustment method according to claim 1, characterized in that: The step of dynamically adjusting the inclination angle of the photovoltaic assembly based on the third comparison result between the theoretical maximum value and the indoor lighting standard value comprises: If the third comparison result is that the theoretical maximum value is greater than the indoor lighting standard value, then determine the illumination change of the indoor illumination after rotating the photovoltaic module by a preset angle in the positive direction and the reverse direction, and take the direction with the larger illumination change as the actual rotation direction; The photovoltaic assembly is rotated according to the actual rotation direction until the indoor illumination reaches the indoor lighting standard value.

8. The tilt angle adjustment method according to claim 7, characterized in that: After the step of rotating the photovoltaic assembly according to the actual rotation direction until the indoor illumination reaches the indoor lighting standard value, the method further includes: If the indoor illumination is greater than the indoor lighting standard value, the target equivalent solar altitude angle of the photovoltaic component at the current moment is determined, and the target equivalent solar altitude angle is tracked to adjust the inclination angle of the photovoltaic component.

9. A tilt adjustment device, characterized in that: The tilt adjustment device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the tilt adjustment method according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the tilt angle adjustment method according to any one of claims 1 to 8 are implemented.

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