Reflector control method, device, system and photovoltaic power station

Abstract

The present invention discloses a reflector control method, device, system and photovoltaic power station, the method comprising: in a preset first time period, when the amount of environmental radiation is greater than or equal to a preset threshold, determining that the reflector is in a bright area, the reflector having a first reflective surface and a second reflective surface, the reflection mode of the first reflective surface is specular reflection, and the reflection mode of the second reflective surface is diffuse reflection; obtaining a first radiation amount specularly reflected from the reflector in the bright area to a photovoltaic module, and a second radiation amount diffusely reflected from the reflector to the photovoltaic module; determining the reflection mode of the reflector according to the first radiation amount and the second radiation amount, and adjusting the reflector. The present invention accurately adjusts the radiation amount reflected by the reflector.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and in particular to a reflector control method, device, system and photovoltaic power station. Background Art

[0002] With the continuous development of photovoltaic module technology, bifacial photovoltaic modules are becoming more and more popular. The cost of bifacial photovoltaic modules is basically the same as that of single-sided modules, and the trend of N-type photovoltaic modules is becoming more and more obvious. Bifacial modules are becoming more and more popular. Currently, a large number of power stations use bifacial photovoltaic modules. However, although there are many bifacial modules, the utilization efficiency of bifacial photovoltaic modules is very low. The power generation of photovoltaic modules is directly related to the amount of solar radiation received by the front and back of the modules. Sunlight is the energy input of photovoltaic modules. The more solar rays the front and back of photovoltaic modules receive, the greater the amount of solar radiation received by the photovoltaic modules, and the greater the power generation.

[0003] Reflectors can reflect sunlight other than direct light from the modules to the front and back of photovoltaic modules, increasing the amount of solar radiation received by the front and back of photovoltaic modules. However, the area of ​​reflected light reflected on the module surface changes with the change of the sun's position, which will cause local reflected light to fail to cover the entire module, resulting in module mismatch and inability to increase power generation. In severe cases, hot spots or even fires may occur. Therefore, the adjustment of the reflector requires a more accurate solution. Summary of the invention

[0004] The main purpose of the present invention is to provide a reflector control method, device, system and photovoltaic power station, aiming to solve the problem of how to accurately adjust the radiation amount reflected by the reflector.

[0005] To achieve the above object, the present invention provides a reflector control method, which comprises the following steps:

[0006] When the amount of environmental radiation is greater than or equal to a preset threshold value in a preset first time period, it is determined that the reflector is in a bright area, the reflector has a first reflective surface and a second reflective surface, the reflection mode of the first reflective surface is specular reflection, and the reflection mode of the second reflective surface is diffuse reflection;

[0007] Acquire a first irradiance specularly reflected from the reflector in the bright area to the photovoltaic assembly, and a second irradiance diffusely reflected from the reflector to the photovoltaic assembly;

[0008] The reflection mode of the reflector is determined according to the first radiation amount and the second radiation amount, and the reflector is adjusted.

[0009] In one embodiment, the step of determining the reflection mode of the reflective plate according to the first radiation amount and the second radiation amount and adjusting the reflective plate comprises:

[0010] When the first irradiance is greater than or equal to the second irradiance, determining a first mirror reflection angle of the mirror reflection of the reflector, controlling the reflector to adjust to the first mirror reflection angle, and mirror reflecting the light to the photovoltaic module;

[0011] When the first irradiance is less than the second irradiance, a first diffuse reflection angle of diffuse reflection of the reflector is determined, the reflector is controlled to adjust to the first diffuse reflection angle, and the light is diffusely reflected to the photovoltaic module.

[0012] In one embodiment, the step of determining a first mirror reflection angle of the mirror reflection of the reflective plate comprises:

[0013] Acquiring irradiation parameters of the photovoltaic module, wherein the irradiation parameters include an incident angle of light irradiating the photovoltaic module, an inclination angle of the photovoltaic module, an orientation of the photovoltaic module, and a length of the photovoltaic module;

[0014] The first specular reflection angle of the specular reflection of the reflector is determined according to the illumination parameter.

[0015] In one embodiment, the reflector control method includes:

[0016] When the amount of environmental radiation is less than a preset threshold value during a preset first time period, determining that the reflector is in a shadow area;

[0017] A second diffuse reflection angle of diffuse reflection of the reflector in the shadow area is determined, the reflector is controlled to adjust to the second diffuse reflection angle, and the light is diffusely reflected to the photovoltaic module.

[0018] In one embodiment, the reflector control method includes:

[0019] When the ambient radiation is greater than a preset threshold value in a preset second time period, a third radiation reflected by the reflector to the photovoltaic module and a fourth radiation reflected by the reflector to the photovoltaic module are obtained;

[0020] The reflecting pattern of the reflecting plate is determined according to the third irradiance and the fourth irradiance, and the reflecting plate is adjusted.

[0021] In one embodiment, the photovoltaic assembly is mounted on a fixed bracket, and the step of determining the reflection mode of the reflector according to the third radiation amount and the fourth radiation amount and adjusting the reflector comprises:

[0022] When the third irradiance is greater than or equal to the fourth irradiance, determining a second mirror reflection angle of the mirror reflection of the reflector, controlling the reflector to adjust to the second mirror reflection angle, and mirror reflecting the light to the photovoltaic module;

[0023] When the third irradiance is less than the fourth irradiance, a third diffuse reflection angle of diffuse reflection of the reflector is determined, the reflector is controlled to adjust to the third diffuse reflection angle, and the light is diffusely reflected to the photovoltaic module.

[0024] In one embodiment, the photovoltaic assembly is mounted on a flat single-axis tracking bracket, and the step of determining the reflection mode of the reflector according to the third irradiance and the fourth irradiance and adjusting the reflector comprises:

[0025] When the third irradiance is greater than or equal to the fourth irradiance, determining a third mirror reflection angle of the mirror reflection of the reflector and a first height of the reflector, controlling the reflector to adjust to the third mirror reflection angle and the first height, and mirror-reflecting the light to the photovoltaic module;

[0026] When the third irradiance is less than the fourth irradiance, a fourth diffuse reflection angle of the diffuse reflection of the reflector and a second height of the reflector are determined, the reflector is controlled to adjust to the fourth diffuse reflection angle and the second height, and diffusely reflects the light to the photovoltaic module.

[0027] In one embodiment, the reflector control method includes:

[0028] In a preset third time period, when the amount of environmental radiation is less than a preset threshold, determining a fifth diffuse reflection angle of diffuse reflection of the reflector;

[0029] The reflector is controlled to adjust to the fifth diffuse reflection angle, and diffusely reflects the light to the photovoltaic module.

[0030] To achieve the above-mentioned purpose, the present invention also provides a reflector control device, which includes a memory, a processor, and a reflector control program stored in the memory and executable on the processor. When the reflector control program is executed by the processor, the various steps of the reflector control method described above are implemented.

[0031] To achieve the above object, the present invention provides a reflector control system, wherein the reflector has a first reflective surface and a second reflective surface, the reflection mode of the first reflective surface is mirror reflection, and the reflection mode of the second reflective surface is diffuse reflection; the reflector control system comprises:

[0032] A bracket connected to at least one of the reflective panels via a rotating mechanism;

[0033] A driving device, connected to the rotating mechanism of the bracket, driving the rotating mechanism to rotate and adjust the angle of the reflector;

[0034] A detection device for detecting the angle of the reflector; and

[0035] The control device is connected to the driving device and the detection device respectively. The control device is used to determine the reflection mode according to the data detected by the detection device and send a signal to the driving device so that the driving device can adjust the angle of the reflector.

[0036] In one embodiment, a lifting structure is provided on the bracket, and the lifting structure is connected to the driving device and the detection device respectively;

[0037] The detection device is also used to detect the height of the bracket; the driving device is also used to drive the lifting structure to adjust the height of the bracket.

[0038] In one embodiment, a plurality of the reflective plates are connected in series in a row and fixed on the same bracket.

[0039] To achieve the above-mentioned purpose, the present invention also provides a photovoltaic power station, which includes the reflector control system as described above, a photovoltaic component and a reflector, wherein the reflector has a first reflective surface and a second reflective surface, the reflection mode of the first reflective surface is mirror reflection, and the reflection mode of the second reflective surface is diffuse reflection.

[0040] To achieve the above object, the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a reflector control program, and when the reflector control program is executed by a processor, the various steps of the reflector control method described above are implemented.

[0041] The present invention provides a reflector control method, device, system and photovoltaic power station. In a preset first time period, when the amount of environmental radiation is greater than or equal to a preset threshold, it is determined that the reflector is in a bright area; a first amount of radiation that is specularly reflected from the reflector in the bright area to the photovoltaic module and a second amount of radiation that is diffusely reflected from the reflector to the photovoltaic module are obtained; a reflection mode of the reflector is determined according to the first amount of radiation and the second amount of radiation, and the reflector is adjusted. The reflection mode of the reflector is determined by the first amount of radiation and the second amount of radiation of the reflector in the bright area, and then the reflector is adjusted to control the amount of radiation that is reflected from the reflector to the photovoltaic module, thereby improving the accuracy of adjusting the amount of radiation reflected by the reflector, and thus increasing the power generation of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 Schematic diagram of the hardware structure of the reflector control device involved in the embodiment of the present invention;

[0043] Figure 2 is a schematic flow chart of a first embodiment of a reflector control method of the present invention;

[0044] Figure 3 It is a structural schematic diagram of the reflector control system of the present invention;

[0045] Figure 4 A schematic diagram of a bright area and a shadow area in a preset first time period of the reflector control method of the present invention;

[0046] Figure 5 A schematic diagram of a shadow area in a preset third time period of the reflector control method of the present invention;

[0047] Figure 6 It is a schematic diagram of a reflector corresponding to the flat single-axis tracking bracket of the reflector control method of the present invention;

[0048] Figure 7 is a schematic flow chart of a second embodiment of a reflector control method of the present invention;

[0049] Figure 8 A schematic diagram of a reflector corresponding to a fixed bracket of a reflector control method of the present invention;

[0050] Fig. 9 It is a schematic diagram of a reflector corresponding to the fixed bracket of the reflector control method of the present invention.

[0051] Label name Label name 10 Reflectors 11 First reflective surface 12 Second reflective surface 20 Bracket 21 Rotating mechanism 22 Lifting structure 30 Drive device 40 Detection device 50 Controls 60 power supply

[0052] 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

[0053] 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.

[0054] The main solution of the embodiment of the present invention is: in a preset first time period, when the ambient radiation amount is greater than or equal to a preset threshold, determine that the reflector is in a bright area; obtain a first radiation amount that is specularly reflected by the reflector in the bright area to the photovoltaic component, and a second radiation amount that is diffusely reflected by the reflector to the photovoltaic component; determine the reflection mode of the reflector according to the first radiation amount and the second radiation amount, and adjust the reflector.

[0055] The reflection mode of the reflector is determined by the first and second irradiances of the reflector in the bright area, and then the reflector is adjusted to control the irradiance reflected by the reflector to the photovoltaic module, thereby improving the accuracy of adjusting the irradiance reflected by the reflector and improving the power generation of the photovoltaic module.

[0056] As an implementation scheme, the reflector control device can be as follows Figure 1 shown.

[0057] The embodiment of the present invention relates to a reflector control device, which includes: a processor 101, such as a CPU, a memory 102, and a communication bus 103. The communication bus 103 is used to realize connection and communication between these components.

[0058] The memory 102 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. Figure 1 As shown, the memory 102 as a computer-readable storage medium may include a reflector control program; and the processor 101 may be used to call the reflector control program stored in the memory 102 and perform the following operations:

[0059] When the amount of environmental radiation is greater than or equal to a preset threshold value in a preset first time period, it is determined that the reflector is in a bright area, the reflector has a first reflective surface and a second reflective surface, the reflection mode of the first reflective surface is specular reflection, and the reflection mode of the second reflective surface is diffuse reflection;

[0060] Acquire a first irradiance specularly reflected from the reflector in the bright area to the photovoltaic assembly, and a second irradiance diffusely reflected from the reflector to the photovoltaic assembly;

[0061] The reflection mode of the reflector is determined according to the first radiation amount and the second radiation amount, and the reflector is adjusted.

[0062] In one embodiment, the processor 101 may be used to call the reflector control program stored in the memory 102 and perform the following operations:

[0063] When the first irradiance is greater than or equal to the second irradiance, determining a first mirror reflection angle of the mirror reflection of the reflector, controlling the reflector to adjust to the first mirror reflection angle, and mirror reflecting the light to the photovoltaic module;

[0064] When the first irradiance is less than the second irradiance, a first diffuse reflection angle of diffuse reflection of the reflector is determined, the reflector is controlled to adjust to the first diffuse reflection angle, and the light is diffusely reflected to the photovoltaic module.

[0065] In one embodiment, the processor 101 may be used to call the reflector control program stored in the memory 102 and perform the following operations:

[0066] Acquiring irradiation parameters of the photovoltaic module, wherein the irradiation parameters include an incident angle of light irradiating the photovoltaic module, an inclination angle of the photovoltaic module, an orientation of the photovoltaic module, and a length of the photovoltaic module;

[0067] The first specular reflection angle of the specular reflection of the reflector is determined according to the illumination parameter.

[0068] In one embodiment, the processor 101 may be used to call the reflector control program stored in the memory 102 and perform the following operations:

[0069] When the amount of environmental radiation is less than a preset threshold value during a preset first time period, determining that the reflector is in a shadow area;

[0070] A second diffuse reflection angle of diffuse reflection of the reflector in the shadow area is determined, the reflector is controlled to adjust to the second diffuse reflection angle, and the light is diffusely reflected to the photovoltaic module.

[0071] In one embodiment, the processor 101 may be used to call the reflector control program stored in the memory 102 and perform the following operations:

[0072] When the ambient radiation is greater than a preset threshold value in a preset second time period, a third radiation reflected by the reflector to the photovoltaic module and a fourth radiation reflected by the reflector to the photovoltaic module are obtained;

[0073] The reflecting pattern of the reflecting plate is determined according to the third irradiance and the fourth irradiance, and the reflecting plate is adjusted.

[0074] In one embodiment, the processor 101 may be used to call the reflector control program stored in the memory 102 and perform the following operations:

[0075] When the third irradiance is greater than or equal to the fourth irradiance, determining a second mirror reflection angle of the mirror reflection of the reflector, controlling the reflector to adjust to the second mirror reflection angle, and mirror reflecting the light to the photovoltaic module;

[0076] When the third irradiance is less than the fourth irradiance, a third diffuse reflection angle of diffuse reflection of the reflector is determined, the reflector is controlled to adjust to the third diffuse reflection angle, and the light is diffusely reflected to the photovoltaic module.

[0077] In one embodiment, the processor 101 may be used to call the reflector control program stored in the memory 102 and perform the following operations:

[0078] When the third irradiance is greater than or equal to the fourth irradiance, determining a third mirror reflection angle of the mirror reflection of the reflector and a first height of the reflector, controlling the reflector to adjust to the third mirror reflection angle and the first height, and mirror-reflecting the light to the photovoltaic module;

[0079] When the third irradiance is less than the fourth irradiance, a fourth diffuse reflection angle of the diffuse reflection of the reflector and a second height of the reflector are determined, the reflector is controlled to adjust to the fourth diffuse reflection angle and the second height, and diffusely reflects the light to the photovoltaic module.

[0080] In one embodiment, the processor 101 may be used to call the reflector control program stored in the memory 102 and perform the following operations:

[0081] When the ambient radiation is less than a preset threshold value in a preset third time period, determining a fifth diffuse reflection angle of diffuse reflection of the reflector;

[0082] The reflector is controlled to adjust to the fifth diffuse reflection angle, and diffusely reflects the light to the photovoltaic module.

[0083] Based on the hardware architecture of the reflector control device described above, an embodiment of a reflector control method of the present invention is proposed.

[0084] Reference Figure 2 , Figure 2 This is a first embodiment of the reflector control method of the present invention, and the reflector control method comprises the following steps:

[0085] Step S10, in a preset first time period, when the ambient radiation is greater than or equal to a preset threshold, it is determined that the reflector is in a bright area, the reflector has a first reflective surface and a second reflective surface, the reflection mode of the first reflective surface is mirror reflection, and the reflection mode of the second reflective surface is diffuse reflection.

[0086] Specifically, Figure 3 As shown, the reflector 10 has a first reflective surface 11 and a second reflective surface 12. The reflection mode of the first reflective surface 11 is mirror reflection, and the reflection mode of the second reflective surface 12 is diffuse reflection or velvet reflection. The mirror reflection and diffuse reflection can be switched by adjusting the reflective surface of the reflector 10.

[0087] The preset first time period can be the morning and afternoon of a non-rainy day, optionally, the morning is from 9:00 to 11:00, and the afternoon is from 13:00 to 15:00. In the first time period, the change value of the environmental radiation is relatively large. For example, the preset threshold is 400W / m 2 , the environmental radiation in the first time period is 300W / m 2 Up to 500W / m 2 In the preset first time period, when the ambient radiation is greater than or equal to the preset threshold, it is determined that the reflector is in the bright area. For example, Figure 4 As shown, the reflector on the right is in the bright area. Optionally, the preset threshold can be 400W / m 2 .

[0088] Optionally, when the ambient radiation is less than a preset threshold value during a preset first time period, it is determined that the reflector is in a shadow area. For example, Figure 4 As shown, the left reflector is in the shadow area. The second diffuse reflection angle of the diffuse reflection of the reflector in the shadow area is determined, the reflector is controlled to adjust to the second diffuse reflection angle, and the light is diffusely reflected to the photovoltaic module.

[0089] Optionally, in a preset third time period, when the ambient radiation is less than a preset threshold, a fifth diffuse reflection angle of diffuse reflection of the reflector is determined; the reflector is controlled to adjust to the fifth diffuse reflection angle, and diffusely reflects the light to the photovoltaic module, for example, Figure 5 As shown, the reflectors on the left and right sides are in the shadow area in the preset third time period, the fifth diffuse reflection angle of the left reflector is θ1, and the fifth diffuse reflection angle of the right reflector is θ2. The preset third time period can be morning, evening, cloudy or rainy. Optionally, the morning is from 6 to 9 o'clock and the evening is from 15 to 17 o'clock. In the preset third time period, the environmental radiation is usually less than the preset threshold. Optionally, the preset threshold can be 400W / m 2 .

[0090] Optionally, when the fourth time period is preset, where the fourth time period is before sunrise or after sunset, the ambient radiation is less than the preset radiation, and when the radiation of the reflectors on the same bracket is less than the preset radiation, the preset radiation is 100W / m 2 , reset the reflector to 0 degrees and close the reflector control device.

[0091] Step S20, obtaining a first irradiance specularly reflected from the reflector in the bright area to the photovoltaic assembly, and a second irradiance diffusely reflected from the reflector to the photovoltaic assembly.

[0092] Specifically, a first irradiance of the reflector in the bright area reflected from the mirror to the photovoltaic module and a second irradiance of the reflector diffusely reflected from the reflector to the photovoltaic module are obtained. Optionally, the first irradiance may be the maximum mirror reflection irradiance of the reflector in the bright area, and the second irradiance may be the maximum diffuse reflection irradiance of the reflector in the bright area. The photovoltaic module is a double-sided photovoltaic module, that is, both sides of the photovoltaic module can obtain light and generate electricity.

[0093] Step S30: determining a reflection mode of the reflector according to the first radiation amount and the second radiation amount, and adjusting the reflector.

[0094] Specifically, the reflective pattern of the reflector is determined according to the first irradiance and the second irradiance, and the reflector is adjusted. The reflective pattern includes the angle of the reflector, wherein the angle of the reflector is the angle between the reflector and the horizontal direction. Optionally, when the angle is 0 to 180 degrees, the reflector is a mirror reflection, and when the angle is 180 to 360 degrees, the reflector is a diffuse reflection. Optionally, the reflective pattern includes the angle and the reflective surface of the reflector, such as a diffuse reflection of 30 degrees. Optionally, the reflective pattern may also include the height of the bracket.

[0095] Optionally, when the photovoltaic module is installed on a fixed bracket, the orientation and inclination of the photovoltaic module are fixed. When the first irradiance is greater than or equal to the second irradiance, the first mirror reflection angle of the mirror reflection of the reflector is determined, the reflector is controlled to adjust to the first mirror reflection angle, and the light is mirror-reflected to the photovoltaic module; when the first irradiance is less than the second irradiance, the first diffuse reflection angle of the diffuse reflection of the reflector is determined, the reflector is controlled to adjust to the first diffuse reflection angle, and the light is diffusely reflected to the photovoltaic module.

[0096] Optionally, when the photovoltaic module is installed on a flat single-axis tracking bracket, the orientation and inclination of the photovoltaic module are adjusted as the position of the sun changes. When the first irradiance is greater than or equal to the second irradiance, the mirror reflection angle of the mirror reflection of the reflector and the first height of the reflector are determined, the reflector is controlled to be adjusted to the mirror reflection angle and the first height, and the light is mirror-reflected to the photovoltaic module. For example, Figure 6 As shown; when the first irradiance is less than the second irradiance, the diffuse reflection angle of the reflector and the second height of the reflector are determined, the reflector is controlled to adjust to the diffuse reflection angle and the second height, and the light is diffusely reflected to the photovoltaic module.

[0097] Determine the specular reflection angle or diffuse reflection angle of the specular reflection of the reflector, and optionally obtain the irradiation parameters of the photovoltaic module, the irradiation parameters include the incident angle of light irradiating to the photovoltaic module, the inclination angle of the photovoltaic module, the direction of the photovoltaic module, and the length of the photovoltaic module; determine the specular reflection angle and diffuse reflection angle of the reflector according to the irradiation parameters. Among them, the inclination angle and direction of the photovoltaic module are related to the incident angle of light irradiating to the photovoltaic module.

[0098] In the technical solution of this embodiment, when the amount of environmental radiation is greater than or equal to a preset threshold value during a preset first time period, it is determined that the reflector is in a bright area; a first amount of radiation reflected by the reflector in the bright area from the mirror surface to the photovoltaic module and a second amount of radiation reflected by the reflector from the diffuse reflection to the photovoltaic module are obtained; a reflection mode of the reflector is determined according to the first amount of radiation and the second amount of radiation, and the reflector is adjusted. The reflection mode of the reflector is determined by the first amount of radiation and the second amount of radiation of the reflector in the bright area, and then the reflector is adjusted to control the amount of radiation reflected by the reflector to the photovoltaic module, thereby improving the accuracy of adjusting the amount of radiation reflected by the reflector, and thus increasing the power generation of the photovoltaic module.

[0099] Reference Figure 7 , Figure 7 The second embodiment of the reflector control method of the present invention is based on the first embodiment, and the method comprises the following steps:

[0100] Step S40, when the ambient radiation is greater than a preset threshold value in a preset second time period, obtaining a third radiation reflected by the reflector to the photovoltaic module and a fourth radiation reflected by the reflector to the photovoltaic module;

[0101] Step S50, determining the reflection mode of the reflector according to the third radiation amount and the fourth radiation amount, and adjusting the reflector.

[0102] Specifically, the preset second time period may be noon, and exemplary, noon is from 11:00 to 13:00. The amount of ambient radiation in the preset second time period is greater than a preset threshold, and optionally, the preset threshold may be 400 W / m 2 Determine a third irradiance that the reflector specularly reflects to the photovoltaic module, and determine a fourth irradiance that the reflector diffusely reflects to the photovoltaic module; optionally, the third irradiance may be the maximum specular irradiance of the reflector, and the fourth irradiance may be the maximum diffuse irradiance of the reflector.

[0103] The reflective pattern of the reflector is determined according to the third irradiance and the fourth irradiance, and the reflector is adjusted. Optionally, when the photovoltaic module is installed on a fixed bracket, the orientation and inclination of the photovoltaic module are fixed, and when the third irradiance is greater than or equal to the fourth irradiance, the second mirror reflection angle of the mirror reflection of the reflector is determined, the reflector is controlled to be adjusted to the second mirror reflection angle, and the light is mirror-reflected to the photovoltaic module, for example, Figure 8 As shown; when the third irradiance is less than the fourth irradiance, the third diffuse reflection angle of the diffuse reflection of the reflector is determined, the reflector is controlled to adjust to the third diffuse reflection angle, and the light is diffusely reflected to the photovoltaic module.

[0104] Optionally, when the photovoltaic module is installed on a flat single-axis tracking bracket, the orientation and inclination of the photovoltaic module are adjusted as the position of the sun changes. When the third irradiance is greater than or equal to the fourth irradiance, the third mirror reflection angle of the mirror reflection of the reflector and the first height of the reflector are determined, the reflector is controlled to be adjusted to the third mirror reflection angle and the first height, and the light is mirror-reflected to the photovoltaic module. For example, Fig. 9 As shown; when the third irradiance is less than the fourth irradiance, the fourth diffuse reflection angle of the diffuse reflection of the reflector and the second height of the reflector are determined, the reflector is controlled to adjust to the fourth diffuse reflection angle and the second height, and the light is diffusely reflected to the photovoltaic module.

[0105] Determine the specular reflection angle or diffuse reflection angle of the specular reflection of the reflector, and optionally obtain the irradiation parameters of the photovoltaic module, which include the incident angle of light irradiating to the photovoltaic module, the inclination angle of the photovoltaic module, the direction of the photovoltaic module, and the length of the photovoltaic module; determine the specular reflection angle and diffuse reflection angle of the reflector and the height of the bracket according to the irradiation parameters. Among them, the inclination angle and direction of the photovoltaic module are related to the incident angle of light irradiating to the photovoltaic module.

[0106] In the technical solution of this implementation, in the preset second time period, when the amount of environmental radiation is greater than the preset threshold, the third amount of radiation reflected by the reflector to the photovoltaic module and the fourth amount of radiation diffusely reflected by the reflector to the photovoltaic module are obtained; the reflection mode of the reflector is determined according to the third amount of radiation and the fourth amount of radiation, and the reflector is adjusted. The reflection mode of the reflector is determined by the third amount of radiation and the fourth amount of radiation of the reflector, and then the reflector is adjusted to control the amount of radiation reflected by the reflector to the photovoltaic module, thereby increasing the power generation of the photovoltaic module.

[0107] The present invention also provides a reflector control device, which includes a memory, a processor, and a reflector control program stored in the memory and executable on the processor. When the reflector control program is executed by the processor, the various steps of the reflector control method described in the above embodiment are implemented.

[0108] Reference Figure 3The present invention also provides a reflector control system, wherein the reflector 10 has a first reflective surface 11 and a second reflective surface 12, wherein the reflection mode of the first reflective surface 11 is mirror reflection, and the reflection mode of the second reflective surface 12 is diffuse reflection; the reflector control system comprises: a bracket 20, connected to at least one of the reflectors 10 via a rotating mechanism 21; a driving device 30, connected to the rotating mechanism of the bracket 20, driving the rotating mechanism 21 to rotate, and adjusting the angle of the reflector 10; a detection device 40, detecting the angle of the reflector 10; and a control device 50, respectively connected to the driving device 30 and the detection device 40, wherein the control device 50 is used to determine the reflection mode according to the data detected by the detection device 40, and send a signal to the driving device 30, so that the driving device 30 adjusts the angle of the reflector 10.

[0109] Specifically, the reflector 10 has a first reflective surface 11 and a second reflective surface 12, wherein the first reflective surface 11 is a mirror reflection, and the second reflective surface 12 is a diffuse reflection or a velvet reflection. The driving device 30 drives the rotating mechanism 21 to rotate through the rotating mechanism 21 of the bracket 20 to adjust the angle of the reflector 10. Optionally, when the angle is 0 to 180 degrees, the reflector 10 is a mirror reflection, and when the angle is 180 to 360 degrees, the reflector 10 is a diffuse reflection.

[0110] Optionally, the detection device 40 may be an angle sensor, which is disposed on the rotating mechanism 21 and is used to detect the angle of the reflector 10 .

[0111] The control device 50 is connected to the driving device 30 and the detection device 40 respectively. The control device 50 is used to determine the reflection mode according to the data detected by the detection device 40, and send a signal to the driving device 30 so that the driving device 30 adjusts the angle of the reflector 10, wherein the reflection mode includes the angle of the reflector 10.

[0112] Optionally, the power supply 60 is connected to the driving device 30 and the control device 50 respectively to supply power to the driving device 30 and the control device 50 .

[0113] Optionally, a lifting structure 22 is provided on the bracket 20, and the lifting structure 20 is respectively connected to the driving device 30 and the detection device 40. The detection device 40 is also used to detect the height of the bracket 20. Optionally, the detection device 40 may include a height detection sensor, which is provided on the lifting structure 22. The driving device 30 is also used to drive the lifting structure 22 to adjust the height of the bracket 20.

[0114] Optionally, the plurality of reflectors 10 are connected in series in a row and fixed on the same bracket 20 .

[0115] In the technical solution of this embodiment, the angle of the reflector 10 is adjusted by the reflector control system, thereby adjusting the amount of radiation reflected by the reflector 10 to the photovoltaic module, which can increase the power generation of the photovoltaic module.

[0116] The present invention also provides a photovoltaic power station, which includes a reflector control system as described in the above embodiment, a photovoltaic component and a reflector, wherein the reflector has a first reflective surface and a second reflective surface, the reflection mode of the first reflective surface is mirror reflection, and the reflection mode of the second reflective surface is diffuse reflection.

[0117] The present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a reflector control program, and when the reflector control program is executed by a processor, each step of the reflector control method described in the above embodiment is implemented.

[0118] 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.

[0119] 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, system, article or device 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, system, article or device. 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, system, article or device including the element.

[0120] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment system can be implemented by means of software plus a necessary general hardware platform, and of course it can also be implemented 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 computer-readable 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 parking management device, an air conditioner, or a network device, etc.) to execute the system described in each embodiment of the present invention.

[0121] 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 reflector control method, characterized in that: The reflector control method comprises: When the amount of environmental radiation is greater than or equal to a preset threshold value in a preset first time period, it is determined that the reflector is in a bright area, the reflector has a first reflective surface and a second reflective surface, the reflection mode of the first reflective surface is specular reflection, and the reflection mode of the second reflective surface is diffuse reflection; Acquire a first irradiance specularly reflected from the reflector in the bright area to the photovoltaic assembly, and a second irradiance diffusely reflected from the reflector to the photovoltaic assembly; The reflective mode of the reflector is determined according to the first irradiance and the second irradiance, and the reflector is adjusted, including: when the first irradiance is greater than or equal to the second irradiance, a first mirror reflection angle of the mirror reflection of the reflector is determined, the reflector is controlled to be adjusted to the first mirror reflection angle, and the light is mirror-reflected to the photovoltaic module; when the first irradiance is less than the second irradiance, a first diffuse reflection angle of the diffuse reflection of the reflector is determined, the reflector is controlled to be adjusted to the first diffuse reflection angle, and the light is diffusely reflected to the photovoltaic module.

2. The reflector control method according to claim 1, characterized in that: The step of determining a first mirror reflection angle of the mirror reflection of the reflector comprises: Acquiring irradiation parameters of the photovoltaic module, wherein the irradiation parameters include an incident angle of light irradiating the photovoltaic module, an inclination angle of the photovoltaic module, an orientation of the photovoltaic module, and a length of the photovoltaic module; The first specular reflection angle of the specular reflection of the reflector is determined according to the illumination parameter.

3. The reflector control method according to claim 1, characterized in that: The reflector control method comprises: When the amount of environmental radiation is less than a preset threshold value during a preset first time period, determining that the reflector is in a shadow area; A second diffuse reflection angle of diffuse reflection of the reflector in the shadow area is determined, the reflector is controlled to adjust to the second diffuse reflection angle, and the light is diffusely reflected to the photovoltaic module.

4. The reflector control method according to claim 1, characterized in that: The reflector control method comprises: When the ambient radiation is greater than a preset threshold value in a preset second time period, a third radiation reflected by the reflector to the photovoltaic module and a fourth radiation reflected by the reflector to the photovoltaic module are obtained; The reflecting pattern of the reflecting plate is determined according to the third irradiance and the fourth irradiance, and the reflecting plate is adjusted.

5. The reflector control method according to claim 4, characterized in that: The photovoltaic assembly is mounted on a fixed bracket, and the step of determining the reflection mode of the reflector according to the third radiation amount and the fourth radiation amount and adjusting the reflector comprises: When the third irradiance is greater than or equal to the fourth irradiance, determining a second mirror reflection angle of the mirror reflection of the reflector, controlling the reflector to adjust to the second mirror reflection angle, and mirror reflecting the light to the photovoltaic module; When the third irradiance is less than the fourth irradiance, a third diffuse reflection angle of diffuse reflection of the reflector is determined, the reflector is controlled to adjust to the third diffuse reflection angle, and the light is diffusely reflected to the photovoltaic module.

6. The reflector control method according to claim 4, characterized in that: The photovoltaic assembly is mounted on a flat single-axis tracking bracket, and the step of determining the reflection mode of the reflector according to the third radiation amount and the fourth radiation amount and adjusting the reflector comprises: When the third irradiance is greater than or equal to the fourth irradiance, determining a third mirror reflection angle of the mirror reflection of the reflector and a first height of the reflector, controlling the reflector to adjust to the third mirror reflection angle and the first height, and mirror-reflecting the light to the photovoltaic module; When the third irradiance is less than the fourth irradiance, a fourth diffuse reflection angle of the diffuse reflection of the reflector and a second height of the reflector are determined, the reflector is controlled to adjust to the fourth diffuse reflection angle and the second height, and diffusely reflects the light to the photovoltaic module.

7. The reflector control method according to claim 1, characterized in that: The reflector control method comprises: In a preset third time period, when the amount of environmental radiation is less than a preset threshold, determining a fifth diffuse reflection angle of diffuse reflection of the reflector; The reflector is controlled to adjust to the fifth diffuse reflection angle, and diffusely reflects the light to the photovoltaic module.

8. A reflector control device, characterized in that: The reflector control device includes a memory, a processor, and a reflector control program stored in the memory and executable on the processor. When the reflector control program is executed by the processor, each step of the reflector control method according to any one of claims 1 to 7 is implemented.

9. A reflector control system, characterized in that: The reflector has a first reflective surface and a second reflective surface, the first reflective surface is a mirror reflection, and the second reflective surface is a diffuse reflection; the reflector control system is used to execute the reflector control method according to any one of claims 1 to 7, and the reflector control system includes: A bracket connected to at least one of the reflective panels via a rotating mechanism; A driving device, connected to the rotating mechanism of the bracket, driving the rotating mechanism to rotate and adjust the angle of the reflector; A detection device for detecting the angle of the reflector; and The control device is connected to the driving device and the detection device respectively. The control device is used to determine the reflection mode according to the data detected by the detection device and send a signal to the driving device so that the driving device can adjust the angle of the reflector.

10. The reflector control system according to claim 9, characterized in that: The bracket is provided with a lifting structure, and the lifting structure is connected to the driving device and the detection device respectively; The detection device is also used to detect the height of the bracket; the driving device is also used to drive the lifting structure to adjust the height of the bracket.

11. The reflector control system according to claim 9 or 10, characterized in that: A plurality of the reflective plates are connected in series in a row and fixed on the same bracket.

12. A photovoltaic power station, characterized in that: The photovoltaic power station comprises a reflector control system as claimed in any one of claims 9 to 11, a photovoltaic module and a reflector, wherein the reflector has a first reflective surface and a second reflective surface, wherein the reflection mode of the first reflective surface is mirror reflection, and the reflection mode of the second reflective surface is diffuse reflection.

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