CN113179078A - Solar energy compensation method and device for photovoltaic power generation panel and electronic equipment - Google Patents

Solar energy compensation method and device for photovoltaic power generation panel and electronic equipment Download PDF

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CN113179078A
CN113179078A CN202110361886.2A CN202110361886A CN113179078A CN 113179078 A CN113179078 A CN 113179078A CN 202110361886 A CN202110361886 A CN 202110361886A CN 113179078 A CN113179078 A CN 113179078A
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power generation
photovoltaic power
generation panel
plane mirror
inclination
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CN113179078B (en
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欧阳斌
阳水贵
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Changsha Yinhan Technology Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/20—Optical components
    • H02S40/22—Light-reflecting or light-concentrating means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/52—PV systems with concentrators

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Abstract

The invention discloses a solar energy compensation method, a solar energy compensation device and electronic equipment for a photovoltaic power generation panel, wherein the method comprises the steps of enabling the front face of the photovoltaic power generation panel to face the south direction, enabling the inclination of the photovoltaic power generation panel to be within a first preset inclination range, arranging a plane mirror in front of the photovoltaic power generation panel, enabling the inclination of the plane mirror to be within a second preset inclination range, and screening an angle combination which increases annual energy production by more than 10% from each angle combination consisting of the first preset inclination and the second preset inclination by combining a ray tracing method and a Monte Carlo method to serve as an optional angle combination. The invention has the beneficial effects that: the fixed plane mirror is used for providing compensation for solar energy received by the photovoltaic panel, the optional angle combination and the optimal angle combination between the photovoltaic panel and the plane mirror are obtained by accurately calculating annual energy production under different angle combinations, and the power generation power of the photovoltaic power generation panel under the same condition is obviously improved at lower cost.

Description

Solar energy compensation method and device for photovoltaic power generation panel and electronic equipment
Technical Field
The invention relates to the technical field of photovoltaic power generation compensation, in particular to a solar energy compensation method and device of a photovoltaic power generation panel and electronic equipment.
Background
The photovoltaic power generation panel is a device for directly converting solar energy into electric energy by utilizing a photovoltaic effect (photovoltaic effect) generated by a semiconductor material under a lighting condition, is the most direct one of a plurality of solar energy utilization modes, and most of materials are silicon. However, the photoelectric conversion efficiency of monocrystalline silicon and polycrystalline silicon photovoltaic power generation panels on the market is between 12% and 30%, and generally, the higher the efficiency, the higher the cost.
The concentrating photovoltaic system mostly adopts the combination of a concentrator, a concentrating cell and a sun tracking system, and the cost is high due to the need of a corresponding control and power device. Therefore, it is highly desirable to provide compensation and gain for the solar radiation energy received by the photovoltaic power generation panel at a lower cost so as to improve the power generation power of the photovoltaic power generation panel under the same condition.
Disclosure of Invention
In order to solve the problems, the invention provides a solar energy compensation method and device for a photovoltaic power generation panel and electronic equipment, and aims to improve the power generation power of the photovoltaic power generation panel under the same condition at lower cost.
In order to solve the technical problem, a first aspect of the present invention provides a solar energy compensation method for a photovoltaic power generation panel, in which a front surface of the photovoltaic power generation panel faces a south direction, an inclination of the photovoltaic power generation panel is within a first preset inclination range, a plane mirror is disposed right in front of the photovoltaic power generation panel, an inclination of the plane mirror is within a second preset inclination range, an angle combination which increases annual energy production by more than 10% is selected as an optional angle combination from each angle combination consisting of the first preset inclination and the second preset inclination by adjusting the inclination of the photovoltaic power generation panel and the inclination of the plane mirror in combination with a ray tracing method and a monte carlo method, and the optional angle combination is applied to installation of the photovoltaic power generation panel and the plane mirror.
In some embodiments, the angle combination with the largest annual energy production is selected from the selectable angle combinations as an optimal angle combination, and the optimal angle combination is applied to the installation of the photovoltaic power generation panel and the plane mirror.
In some embodiments, the photovoltaic power generation panel is fixedly installed at an inclination of the optimal angle combination, and the inclination of the plane mirror includes a spring and autumn mode, a summer mode and a winter mode, the spring and autumn mode includes an optimal angle corresponding to a seasonal maximum power generation amount in spring or autumn, the summer mode includes an optimal angle corresponding to a seasonal maximum power generation amount in summer, and the winter mode includes an optimal angle corresponding to a seasonal maximum power generation amount in winter.
The invention provides a solar energy compensation device of a photovoltaic power generation panel, which comprises the photovoltaic power generation panel and a plane mirror, wherein the photovoltaic power generation panel and the plane mirror are installed in a combined mode according to the optional angle or the optimal angle.
A third aspect of the present invention provides an electronic device, comprising:
a memory storing executable program code;
a processor coupled with the memory;
the processor calls the executable program codes stored in the memory to execute the solar energy compensation method of the photovoltaic power generation panel.
A fourth aspect of the present invention provides a computer-readable storage medium storing a computer program, wherein the computer program causes a computer to execute the above-described solar energy compensation method for a photovoltaic power generation panel.
The invention has the beneficial effects that: the plane mirrors which are fixedly installed are adopted to provide compensation for solar energy received by the photovoltaic power generation panel, the optional angle combination and the optimal angle combination between the photovoltaic power generation panel and the plane mirrors are obtained by accurately calculating annual energy generation under different angle combinations, and the power generation power of the photovoltaic power generation panel under the same condition is obviously improved at lower cost. In addition, the main raw materials of the plane mirror are glass and metal, so that the plane mirror has no pollution to the environment and can be recycled at high degree.
Drawings
Fig. 1 is a schematic view of a combination of a photovoltaic panel and a plane mirror according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a coordinate system according to an embodiment of the present invention;
fig. 3 is a schematic block diagram of an electronic device according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the following detailed description of the present invention is provided with reference to the accompanying drawings and detailed description. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.
The implementation sites of the first and second embodiments are located at the central point (94.7 degrees east longitude and 37.1 degrees north latitude) of the Seawa-Hai-Seisan-Seiki-Seisaku-Sho-Shi basin, and the solar radiation power P per unit areas＝1.4KW/m2The photoelectric conversion efficiency EF of the photovoltaic panel used is 0.15, and the reflectance ρ of the flat mirror used ism＝0.92。
An array of photovoltaic power generation panels having a width of 2m and a length of 100m was installed, and thus the total area A of the array of photovoltaic power generation panelsp＝200m2(m2). The installation direction of the photovoltaic power generation board is the front face facing the south, and the included angle between the photovoltaic power generation board and the horizontal plane is recorded as thetap。
And a plane mirror array is fixedly arranged right in front of the photovoltaic power generation panel, and the near end of each plane mirror is abutted against the front edge of the photovoltaic power generation panel array. A small gap is left between the adjacent plane mirror units to prevent the glass components from bursting along with thermal expansion and contraction of air temperature. The total length of the plane mirror array is 104 meters (2 meters respectively extending out of the left side and the right side of the photovoltaic power generation panel array), the length of the plane mirror unit is 2 meters, and the projection of the width of the plane mirror unit on a horizontal plane is 2 meters, so that the total area A of the plane mirror array ism＝208÷cosθm(m2). The angle between the plane mirror and the horizontal plane is denoted as θm. Such asFig. 1 shows the arrangement positions and the corresponding included angles of the photovoltaic power generation panel and the plane mirror.
Example one
The embodiment provides a solar energy compensation method for a photovoltaic power generation panel, the front face of the photovoltaic power generation panel faces the south direction, the inclination of the photovoltaic power generation panel is within a first preset inclination range, a plane mirror is arranged in front of the photovoltaic power generation panel, the inclination of the plane mirror is within a second preset inclination range, an angle combination which increases the annual energy production by more than 10% is screened out from each angle combination consisting of the first preset inclination and the second preset inclination by adjusting the inclination of the photovoltaic power generation panel and the inclination of the plane mirror and combining a ray tracing method and a Monte Carlo method to serve as an optional angle combination, and the optional angle combination is applied to installation of the photovoltaic power generation panel and the plane mirror.
The invention adopts the fixedly installed plane mirrors to provide compensation for solar energy received by the photovoltaic power generation panel, calculates and accurately calculates the annual energy generation under different angle combinations by combining a ray tracing method and a Monte Carlo method, restores the real illumination process as much as possible, obtains the optional angle combination and the optimal angle combination between the photovoltaic power generation panel and the plane mirrors, and obviously improves the power generation power of the photovoltaic power generation panel under the same condition with lower cost. In addition, the main raw materials of the plane mirror are glass and metal, so that the plane mirror has no pollution to the environment and can be recycled at high degree.
Furthermore, the angle combination with the largest annual energy production is screened out from the selectable angle combinations to serve as the optimal angle combination, and the optimal angle combination is applied to installation of the photovoltaic power generation panel and the plane mirror.
In the case of the flat mirror in the present embodiment, the theoretical annual maximum power generation amount of the photovoltaic power generation panel and the flat mirror combined at different angles needs to be calculated. The first preset inclination range is 30-85 degrees, the second preset inclination range is 0-45 degrees, the inclination of the photovoltaic power generation panel and the inclination of the plane mirror are adjusted every 5 degrees, 120 angle combinations are provided, and the key point is that the instantaneous direct solar radiation ratio c received by the photovoltaic power generation panel is obtaineddAnd the instantaneous effective reflection ratio c of the plane mirrorr。
The annual energy production calculation method comprises the following steps:
Figure BDA0003005920410000051
Figure BDA0003005920410000052
A1(t)＝Ap·sinα (3)
A2(t)＝Am·sinβ (4)
wherein, WDOYTheoretical maximum daily power generation, HriseAt sunrise, HsetAt sunset place, PsIs the solar radiation power per unit area, A1(t) is the instantaneous maximum direct solar equivalent area of the photovoltaic panel, cdIs the instantaneous direct solar radiation ratio received by the photovoltaic panel; a. the2(t) is the instantaneous direct solar equivalent area of the plane mirror, ρmIs the reflectance of a flat mirror, crIs the instantaneous effective reflection ratio of the plane mirror, EF is the photoelectric conversion efficiency of the photovoltaic power generation panel,
Figure BDA0003005920410000053
the average direct solar equivalent area of the current photovoltaic power generation panel and plane mirror angle combination at 25 time nodes in a day, ApIs the area of the photovoltaic power generation panel, alpha is the included angle between the instantaneous light ray vector and the photovoltaic power generation panel, AmIs the area of the plane mirror, and beta is the angle between the instantaneous ray vector and the plane mirror.
Figure BDA0003005920410000054
When in use
Figure BDA0003005920410000055
When, A1(t)＝0；
Figure BDA0003005920410000056
When in use
Figure BDA0003005920410000057
When, A2(t)＝0。
The theoretical maximum daily power generation is obtained by equally dividing the time from sunrise to sunset into 24 segments, calculating the average direct solar equivalent area of 25 time points and combining the maximum sunshine hours and the solar radiation power per unit area on the day.
Instantaneous direct solar radiation ratio c received by photovoltaic power generation paneldThe calculation method comprises the following steps:
and S11, according to the diagram in FIG. 2, establishing a spatial rectangular coordinate system with the midpoint of the boundary between the photovoltaic power generation panel and the plane mirror as the origin, the south direction as the Y-axis forward direction, the west direction as the X-axis forward direction, and the upward direction perpendicular to the horizontal plane as the Z-axis forward direction. Calculating instantaneous ray vector emitted by sun by ray tracing method
Figure BDA0003005920410000058
In the present embodiment, the normal vector of the photovoltaic power generation panel is defined as
Figure BDA0003005920410000059
Wherein, Xp0. Let ZpWhen 1, then Yp＝tanθp. Photovoltaic power generation board normal unit vector
Figure BDA0003005920410000061
Setting the normal vector of the plane mirror as
Figure BDA0003005920410000062
Wherein, Xm0. Let ZmWhen 1, then Yp＝-tanθp. Unit vector of normal of plane mirror
Figure BDA0003005920410000063
And calculating the unit vector of the solar ray at any moment. The date is expressed as DOY and is the number of days in the year, from 1 to 365. Local solar time HsIt is shown that,noon local solar hour HsAt 12, the solar altitude reaches a maximum.
The latitude of the earth directly irradiated by the sun on the day is declination, which is expressed by delta, and the calculation formula is as follows:
Figure BDA0003005920410000064
the solar time angle is represented by omega, and the calculation formula is as follows:
Figure BDA0003005920410000065
sun altitude theta at latitude phi and local time angle omegahThe calculation formula of (a) is as follows:
θh＝arcsin(sinφsinδ+cosφcosδcosω)
let θ in the above formulahWhen the sun time angle is 0, the corresponding sun time angle ω is calculated, and then the sunrise and local time H of the day is calculated back by the above equationriseAnd sunset local time Hset。
Azimuth angle theta of the sunaThe calculation formula of (a) is as follows:
Figure BDA0003005920410000066
knowing the solar altitude and azimuth, let the Y component Y of the solar ray vector at that momentLWhen the component X is-1, the component X isL＝±tanθaWhen H is presentsTaking the positive sign when the number is less than or equal to 12, and taking the positive sign when the number is HsWhen the power is more than 12, taking a negative sign, and taking a Z component
Figure BDA0003005920410000067
Denote the ray vector as
Figure BDA0003005920410000068
The ray unit vector is then:
Figure BDA0003005920410000069
s12, placing the starting point of the instantaneous ray vector at any highest point P of the plane mirrorbExtending the end point of the light unit vector to the surface where the photovoltaic power generation panel is located to obtain a three-dimensional coordinate P of the end pointe；
S13, combining height h of photovoltaic power generation panelpAnd three-dimensional coordinates P of the end pointeIs calculated to obtain
Figure BDA0003005920410000071
cd∈[0,1]Wherein Z iseThree-dimensional coordinate P as an end pointeZ-axis component of (a). Specifically, P is first obtainedbDistance to photovoltaic panel
Figure BDA0003005920410000072
Then
Figure BDA0003005920410000073
Wherein the height h of the photovoltaic panelp＝2·sinθp。
Instantaneous effective reflectance ratio c of plane mirrorrThe method is calculated by a Monte Carlo method and comprises the following steps:
s21, calculating a plane mirror normal unit vector
Figure BDA0003005920410000074
According to instantaneous light vector
Figure BDA0003005920410000075
Calculating a ray unit vector
Figure BDA0003005920410000076
S22, when
Figure BDA0003005920410000077
Is greater than
Figure BDA0003005920410000078
Time, lightThe line can be directly projected onto the plane mirror to make instantaneous light vector
Figure BDA0003005920410000079
Randomly put at any point P on the plane mirrori(Xi,Yi,Zi) By generating at
Figure BDA00030059204100000710
Random number in between as XiProduction is at [0, L ]p]Random number in between as YiThen Z isi＝Yi·tanθmWherein, thetamIs the angle between the plane mirror and the horizontal plane, LmIs the length of the plane mirror, LpIs the width of the photovoltaic power generation panel; in the present embodiment,
Figure BDA00030059204100000711
take the form of [ -52,52]，[0,Lp]Take [0,2 ]]。
S23, according to the unit vector of the light
Figure BDA00030059204100000712
And plane mirror normal unit vector
Figure BDA00030059204100000713
Calculating unit vector of reflected light
Figure BDA00030059204100000714
Wherein
Figure BDA00030059204100000715
Represents the inner product of two vectors;
s24, reflecting the unit vector of the light
Figure BDA00030059204100000716
Is placed at random point PiTo reflect the unit vector of the light
Figure BDA00030059204100000717
ToThe point extends to the plane of the photovoltaic power generation plate to obtain a three-dimensional coordinate P of the terminal pointr(Xr,Yr,Zr) (ii) a Specifically, P is first obtainediDistance to photovoltaic panel
Figure BDA00030059204100000718
Then
Figure BDA00030059204100000719
Wherein the included angle between the reflected light and the photovoltaic power generation panel
Figure BDA00030059204100000720
S25, if
Figure BDA0003005920410000081
And Z isr∈[0,hp]Then random point PiNumber of points N incorporated into the effective reflectioneIn this way, if N1000000 random points are repeatedly applied, the instantaneous effective reflection ratio of the plane mirror at any time point is determined
Figure BDA0003005920410000082
In the present embodiment,
Figure BDA0003005920410000083
taking Xr∈[-50,50]。
The theoretical annual maximum power production for all angle combinations is shown in table 1. The calculation result shows that the photovoltaic power generation panel is arranged at 37.1 degrees of north latitude at any angle between 40 and 80 degrees, and the plane mirror is arranged at any angle between 5 and 25 degrees, so that the power generation amount can be improved by at least 10 percent compared with the situation that the photovoltaic power generation panel is independently arranged at the optimal angle of 40 degrees. The theoretical maximum annual power generation capacity of about 138.8MWh can be obtained by installing the photovoltaic power generation panel at an angle of 60 degrees and installing the plane mirror at an angle of 20 degrees, and the light energy and the power generation capacity can be additionally increased by about 21.64% compared with the case of installing the photovoltaic power generation panel alone. Considering that the cost of the plane mirror per unit area is less than 5% of the cost of the photovoltaic panel per unit area, the electricity consumption production cost of the photovoltaic power generation panel can be reduced by about 15%, the electricity consumption cost is close to that of thermal power generation, and the purposes of carbon peak reaching and carbon neutralization can be achieved early.
TABLE 1 theoretical annual maximum power production for all angle combinations
Figure BDA0003005920410000084
It should be noted that, when the latitude positions are different greatly, the selectable angle combination and the optimal angle combination between the photovoltaic power generation panel and the plane mirror are different, and need to be recalculated.
It should be noted that when the latitude positions are different greatly, the optimal angle combination between the photovoltaic power generation panel and the plane mirror is different, and needs to be calculated again.
Example two
The photovoltaic power generation panel is fixedly installed at an inclination in the optimal angle combination described in the first embodiment, the inclination of the plane mirror includes a spring and autumn mode, a summer mode and a winter mode, in the spring and autumn mode, the inclination of the plane mirror is an optimal angle corresponding to the seasonal maximum power generation amount in spring or autumn, in the summer mode, the inclination of the plane mirror is an optimal angle corresponding to the seasonal maximum power generation amount in summer, and in the winter mode, the inclination of the plane mirror is an optimal angle corresponding to the seasonal maximum power generation amount in winter. Since the maximum power generation amount that can be achieved by the inclination of the plane mirror at different latitudes is different, the maximum power generation amount can be calculated by the method described in the first embodiment.
Since the implementation location of the embodiment is located at the central point (94.7 degrees east longitude and 37.1 degrees north latitude) of the chada wood basin in Qinghai province, the photovoltaic power generation panel is fixedly installed at an inclination angle of 60 degrees, the inclinations of the plane mirrors include a spring and autumn mode, a summer mode and a winter mode, the inclination of the plane mirror is 20 degrees in the spring and autumn mode, the inclination of the plane mirror is 30 degrees in the summer mode, and the inclination of the plane mirror is 0 degree in the winter mode.
The width of the plane mirror is fixed to 2.128 meters, which is consistent with the embodiment and is convenient for comparison. The rotating shaft is respectively installed at two vertex points of the near end of the plane mirror, namely the front edge of the photovoltaic power generation panel, the arc-shaped upright posts are respectively arranged at two vertex points of the far end of the plane mirror, and a clamping groove is respectively arranged at the 20-degree inclined angle and the 30-degree inclined angle of each arc-shaped upright post.
Adjusting the plane mirror to the 20-degree inclination angle of the arc upright column in spring (DOY is 35) and autumn (DOY is 220) on two days, and fixing by using a clamping groove; in the summer day (DOY 126), the plane mirror is adjusted to the 30-degree inclination angle of the arc upright post and is fixed by the clamping groove; on the day of summer (DOY 311), the plane mirror is adjusted to the 0 degree inclination angle of the arc column, i.e. the plane mirror is flatly placed on the ground. The angle needs to be adjusted four times in a year, the cleaning period is almost the same as that of the photovoltaic power generation panel, and the surfaces of the photovoltaic power generation panel and the plane mirror can be cleaned and wiped at the moment, so that the power generation capacity is not influenced by dust.
According to calculation, the theoretical annual maximum power generation capacity of the scheme can be further improved to 153.8MWh, and about 34.85% of power generation capacity can be additionally increased compared with that of a photovoltaic power generation panel which is independently installed at an inclined angle of 40 degrees. But this scheme need add comparatively nimble adjustable device for the level crossing to need suitably increase the distance between the two adjacent rows of photovoltaic power generation boards, in order to reduce the effect of sheltering from of front row photovoltaic power generation board to back row level crossing + photovoltaic power generation board. This embodiment is particularly suitable for distributed photovoltaic panels for domestic or community use.
EXAMPLE III
The embodiment provides a solar energy compensation device of a photovoltaic power generation panel, as shown in fig. 1, which includes a photovoltaic power generation panel and a plane mirror, and the photovoltaic power generation panel and the plane mirror are installed according to the optional angle combination described in the first embodiment, or according to the optimal angle combination described in the first embodiment.
Example four
Referring to fig. 3, fig. 3 is a schematic view of a module of an electronic device, which may be an upper computer. As shown in fig. 3, the electronic device may include:
a memory 101 storing executable program code;
a processor 202 coupled to the memory 101;
the processor 202 calls the executable program code stored in the memory 101 to execute all or part of the steps of the solar energy compensation method of the photovoltaic power generation panel described in the above embodiments.
The Memory 101 may include a Random Access Memory (RAM) or a Read-Only Memory (Read-Only Memory). Optionally, the memory 101 includes a non-transitory computer-readable medium. The memory 101 may be used to store instructions, programs, code sets or instruction sets. The memory 101 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function, instructions for implementing the various method embodiments described above, and the like; the storage data area may store data created according to the use of the server, and the like.
Processor 202 may include one or more processing cores. The processor 202 connects various parts within the overall server using various interfaces and lines, performs various functions of the server and processes data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 101, and calling data stored in the memory 101. Alternatively, the processor 202 may be implemented in hardware using at least one of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The processor 202 may integrate one or more of a Central Processing Unit (CPU), a modem, and the like. Wherein, the CPU mainly processes an operating system, an application program and the like; the modem is used to handle wireless communications. It is understood that the modem may not be integrated into the processor 202, but may be implemented by a single chip.
EXAMPLE five
The embodiment of the application further discloses a computer-readable storage medium for storing a computer program for electronic data exchange, wherein the computer program enables a computer to execute all or part of the steps of the solar energy compensation method of the photovoltaic power generation panel described in the embodiment.
In addition, the embodiment of the present application further discloses a computer program product, which when running on a computer, causes the computer to execute all or part of the steps of any latitude position and any solar energy compensation method of the photovoltaic power generation panel described in the above embodiment.
It will be understood by those skilled in the art that all or part of the steps in the methods of the embodiments described above may be implemented by hardware instructions of a program, and the program may be stored in a computer-readable storage medium, where the storage medium includes Read-Only Memory (ROM), Random Access Memory (RAM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), One-time Programmable Read-Only Memory (OTPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Compact Disc Read-Only Memory (CD-ROM), or other Memory, such as a magnetic disk, or a combination thereof, A tape memory, or any other medium readable by a computer that can be used to carry or store data.
Comparative example
For ease of comparison, it was calculated how much electrical energy could be produced at maximum per year without the flat mirrors. The inclination angle of the photovoltaic power generation board directly determines the theoretical annual maximum power generation Wym. By adjusting the angle from 0 degree to 90 degrees every 1 degree, the theoretical annual maximum power generation amount at each angle can be calculated
Figure BDA0003005920410000121
Theoretical maximum daily power generation WDOYThe calculation formula of (a) is as follows:
Figure BDA0003005920410000122
wherein, PsIs the solar radiation power per unit area, A (t) is the equivalent area of direct sunlight which changes with time, A (t) ispSin α, angle between ray vector and photovoltaic panel
Figure BDA0003005920410000123
In the specific calculation, the sunrise place time to the sunset place time are equally divided into 24 parts, A (t) of 25 time nodes is calculated in total (note: when the included angle between the light ray vector and the normal line of the front surface of the photovoltaic power generation panel
Figure BDA0003005920410000124
When the light cannot fall on the photovoltaic power generation panel, A (t) is 0), the average value of 25 time nodes A (t) is taken as the average direct solar equivalent area of the day
Figure BDA0003005920410000125
The calculation result shows that at 37.1 degrees of north latitude, the theoretical maximum annual energy production can be obtained when the inclination angle of the photovoltaic power generation panel is 40 degrees, and the theoretical maximum annual energy production is about 114.1MWh, and the daily average energy production of the photovoltaic power generation panel per unit area is about 1.56 KWh.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.

Claims (10)

1. A solar energy compensation method for a photovoltaic power generation panel is characterized in that the front face of the photovoltaic power generation panel faces the south direction, the inclination of the photovoltaic power generation panel is within a first preset inclination range, a plane mirror is arranged right in front of the photovoltaic power generation panel, the inclination of the plane mirror is within a second preset inclination range, an angle combination which increases the annual energy production by more than 10% is screened out from each angle combination consisting of the first preset inclination and the second preset inclination by adjusting the inclination of the photovoltaic power generation panel and the inclination of the plane mirror in combination with a ray tracing method and a Monte Carlo method to serve as a selectable angle combination, and the selectable angle combination is applied to installation of the photovoltaic power generation panel and the plane mirror.
2. A method of solar energy compensation of a photovoltaic power generation panel according to claim 1, wherein the angle combination with the largest annual energy production is selected from the selectable angle combinations as an optimum angle combination, and the optimum angle combination is applied to the installation of the photovoltaic power generation panel and the plane mirror.
3. A method of solar energy compensation of a photovoltaic power generation panel as claimed in claim 1, wherein the first predetermined inclination range is 30-85 degrees and the second predetermined inclination range is 0-45 degrees.
4. A method of solar energy compensation of a photovoltaic power generation panel as claimed in claim 2, characterized in that the inclination of the photovoltaic power generation panel and the inclination of the flat mirrors are adjusted every 5 degrees.
5. A method of solar energy compensation of a photovoltaic panel according to claim 1, wherein the annual energy production is calculated as follows:
Figure FDA0003005920400000011
Figure FDA0003005920400000012
A1(t)＝Ap·sinα (3)
A2(t)＝Am·sinβ (4)
wherein, WDOYIs a theoretical dayMaximum power generation amount, HriseAt sunrise, HsetAt sunset place, PsIs the solar radiation power per unit area, A1(t) is the instantaneous maximum direct solar equivalent area of the photovoltaic panel, cdIs the instantaneous direct solar radiation ratio received by the photovoltaic panel; a. the2(t) is the instantaneous direct solar equivalent area of the plane mirror, ρmIs the reflectance of a flat mirror, crIs the instantaneous effective reflection ratio of the plane mirror, EF is the photoelectric conversion efficiency of the photovoltaic power generation panel,
Figure FDA0003005920400000021
the average direct solar equivalent area of the current photovoltaic power generation panel and plane mirror angle combination at 25 time nodes in a day, ApIs the area of the photovoltaic power generation panel, alpha is the included angle between the instantaneous light ray vector and the photovoltaic power generation panel, AmIs the area of the plane mirror, and beta is the angle between the instantaneous ray vector and the plane mirror.
6. A method of solar energy compensation of a photovoltaic power panel according to claim 5, wherein the photovoltaic power panel receives an instantaneous direct solar power ratio cdThe calculation method comprises the following steps:
s11, establishing a space rectangular coordinate system by taking the midpoint of the boundary between the photovoltaic power generation panel and the plane mirror as an origin, taking the south direction as the Y-axis forward direction, taking the west direction as the X-axis forward direction and taking the upward direction perpendicular to the horizontal plane as the Z-axis forward direction, and calculating the instantaneous ray vector emitted by the sun by adopting a ray tracing method
Figure FDA0003005920400000026
S12, placing the starting point of the instantaneous ray vector at any highest point P of the plane mirrorbExtending the end point of the light unit vector to the surface where the photovoltaic power generation panel is located to obtain a three-dimensional coordinate P of the end pointe；
S13, combining height h of photovoltaic power generation panelpAnd the three-dimensional coordinates P of the end pointeIs calculated to obtain
Figure FDA0003005920400000022
cd∈[0,1]Wherein Z iseAs three-dimensional coordinates P of said end pointeZ-axis component of (a).
7. A method of solar energy compensation for a photovoltaic power panel as claimed in claim 5 wherein the instantaneous effective reflectance ratio c of said planar mirrorsrThe Monte Carlo method is calculated, and concretely comprises the following steps:
s21, calculating a plane mirror normal unit vector
Figure FDA0003005920400000023
According to the instantaneous light ray vector
Figure FDA0003005920400000024
Calculating a ray unit vector
Figure FDA0003005920400000025
S22, when
Figure FDA0003005920400000031
Is greater than
Figure FDA0003005920400000032
Time, the instantaneous ray vector
Figure FDA0003005920400000033
Randomly throwing the mixture to any point P on the plane mirrori(Xi,Yi,Zi) By generating at
Figure FDA0003005920400000034
Random number in between as XiProduction is at [0, L ]p]Random number in between as Yi，Zi＝Yi·tanθmWherein, thetamIs the angle between the plane mirror and the horizontal plane, LmIs the length of the plane mirror, LpIs the width of the photovoltaic power generation panel;
s23, according to the light unit vector
Figure FDA0003005920400000035
And plane mirror normal unit vector
Figure FDA0003005920400000036
Calculating unit vector of reflected light
Figure FDA0003005920400000037
Figure FDA0003005920400000038
Wherein
Figure FDA0003005920400000039
Represents the inner product of two vectors;
s24, reflecting the unit vector of the light
Figure FDA00030059204000000310
Is placed at random point PiAt least one unit vector of the reflected light
Figure FDA00030059204000000311
The end point of the photovoltaic power generation panel extends to the plane of the photovoltaic power generation panel to obtain a three-dimensional coordinate P of the end pointr(Xr,Yr,Zr)；
S25, if
Figure FDA00030059204000000312
And Z isr∈[0,hp]Then the random point PiNumber of points N incorporated into the effective reflectioneWhen N is 1000000 random points are repeatedly applied, the instantaneous effective reflection ratio of the plane mirror at any time point
Figure FDA00030059204000000313
8. The method of compensating solar energy for a photovoltaic power generation panel according to claim 2, wherein the photovoltaic power generation panel is fixedly installed at an inclination of the optimal angle combination, and the inclination of the plane mirror includes a spring and autumn mode in which the inclination of the plane mirror is an optimal angle corresponding to a seasonal maximum power generation amount in spring or autumn, a summer mode in which the inclination of the plane mirror is an optimal angle corresponding to a seasonal maximum power generation amount in summer, and a winter mode in which the inclination of the plane mirror is an optimal angle corresponding to a seasonal maximum power generation amount in winter.
9. A solar energy compensation device for a photovoltaic power generation panel, comprising a photovoltaic power generation panel and a plane mirror, wherein the photovoltaic power generation panel and the plane mirror are installed according to the optional angle combination of claim 1 or the optimal angle combination of claim 2.
10. An electronic device, comprising:
a memory storing executable program code;
a processor coupled with the memory;
the processor calls the executable program code stored in the memory to execute the solar energy compensation method of the photovoltaic power generation panel according to any one of claims 1 to 8.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104167982A (en) * 2014-08-06 2014-11-26 东南大学 Photovoltaic power generation device
CN208190568U (en) * 2018-06-01 2018-12-04 李西平 A kind of photovoltaic power generation equipment improving generated energy using glass-reflected
JP2020112765A (en) * 2019-01-17 2020-07-27 株式会社西日本エイテック Solar reflector plate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104167982A (en) * 2014-08-06 2014-11-26 东南大学 Photovoltaic power generation device
CN208190568U (en) * 2018-06-01 2018-12-04 李西平 A kind of photovoltaic power generation equipment improving generated energy using glass-reflected
JP2020112765A (en) * 2019-01-17 2020-07-27 株式会社西日本エイテック Solar reflector plate

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