CN114879751A - Photovoltaic power generation control method and system and photovoltaic power station - Google Patents
Photovoltaic power generation control method and system and photovoltaic power station Download PDFInfo
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- G05D3/12—Control of position or direction using feedback
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- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
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- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
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Abstract
The invention discloses a photovoltaic power generation control method, a photovoltaic power generation control system and a photovoltaic power station, wherein the method comprises the following steps: acquiring at least two adjustment angles of a light reflecting piece of the photovoltaic power station, wherein the light reflecting piece is arranged between front and rear rows of photovoltaic modules of a photovoltaic module array and is used for reflecting sunlight to the photovoltaic module array of the photovoltaic power station; sequentially adjusting the light reflecting piece to each adjusting angle for a preset time; determining a target adjustment angle of the reflector according to the power generation amount corresponding to the photovoltaic module array under each adjustment angle; and controlling the reflector to adjust to a target adjustment angle. The method of the invention determines the power generation capacity corresponding to the photovoltaic module array at each adjustment angle of the reflector by sequentially adjusting the reflector to each adjustment angle and continuing for a preset time, determines the target adjustment angle at which the reflector can maximally reflect sunlight to the photovoltaic module from each adjustment angle, controls the reflector to be adjusted to the target adjustment angle, and improves the power generation capacity of the photovoltaic module array.
Description
Technical Field
The invention relates to the technical field of solar power generation, in particular to a photovoltaic power generation control method and system and a photovoltaic power station.
Background
The photovoltaic module is formed by connecting a plurality of single solar cells in series and parallel and tightly packaging, and is a photovoltaic cell combination device for realizing minimum inseparability of photovoltaic power generation. At present, photovoltaic modules are installed on a photovoltaic support to generate electricity, the photovoltaic support is generally an array in a row, and the photovoltaic modules are installed on the photovoltaic support to form a regularly-arranged module array. In addition, because the installation directions of the module arrays are approximately consistent, in order to avoid the mutual shielding of sunlight by the front and rear rows of photovoltaic module arrays, a certain gap is reserved between the arrays, so that the modules can obtain sufficient sunlight and generate more electric energy. However, the remaining gaps between the arrays take up a large amount of land space and waste that portion of the sunlight in the gap.
The above-mentioned contents are only for assisting understanding of the technical solution of the present invention, and do not represent an admission that the above-mentioned contents are related art.
Disclosure of Invention
The invention mainly aims to provide a photovoltaic power generation control method, a photovoltaic power generation control system and a photovoltaic power station, and aims to solve the problems that gaps reserved among arrays occupy larger land space and waste sunlight of the gaps.
In order to achieve the above object, the present invention provides a photovoltaic power generation control method, which is applied to a photovoltaic power station, and includes:
acquiring at least two adjustment angles of a reflector of the photovoltaic power station, wherein the reflector is arranged between front and rear rows of photovoltaic modules of the photovoltaic module array and is used for reflecting sunlight to the photovoltaic module array of the photovoltaic power station;
sequentially adjusting the light reflecting piece to each adjusting angle for a preset time;
determining a target adjustment angle of the reflector according to the power generation amount corresponding to the photovoltaic module array under each adjustment angle;
and controlling the light reflecting piece to adjust to the target adjusting angle.
Optionally, the step of determining the target adjustment angle of the reflector according to the power generation amount corresponding to the photovoltaic module array at each adjustment angle includes:
acquiring the power generation amount corresponding to the photovoltaic modules adjacent to the light reflecting piece respectively when the light reflecting piece is positioned at each adjusting angle;
and determining a target adjustment angle of the light reflecting piece according to the generated energy.
Optionally, the step of determining the target adjustment angle of the reflector according to the power generation amount corresponding to the photovoltaic module array at each adjustment angle includes:
acquiring the adjustment angle corresponding to the maximum power generation amount in the power generation amounts respectively corresponding to the photovoltaic module arrays when all the light reflecting pieces are positioned at each adjustment angle;
and determining the target adjustment angles of all the light reflecting pieces according to the adjustment angle corresponding to the maximum power generation.
Optionally, the step of determining the target adjustment angle of the reflector according to the power generation amount corresponding to the photovoltaic module array at each adjustment angle includes:
acquiring geographic position information of the photovoltaic power station and current time;
and determining the target adjustment angle of the reflector according to the geographic position information, the current time and the power generation amount corresponding to the photovoltaic module array under each adjustment angle.
Optionally, the photovoltaic module of the photovoltaic module array is rotatably disposed on the tracking support, and the photovoltaic power generation control method further includes:
acquiring geographic position information of the photovoltaic power station and current time;
determining a target angle of the photovoltaic module according to the geographic position information and the current time;
and controlling the photovoltaic assembly to adjust to the target angle, and executing the step of obtaining at least two adjustment angles of the light reflecting piece of the photovoltaic power station.
Optionally, the step of determining the target angle of the photovoltaic module according to the geographical location information and the current time includes:
and inputting the geographical position information into a preset astronomical algorithm to obtain the target angle of the photovoltaic double-sided assembly at the current time.
In addition, to achieve the above object, the present invention also provides a photovoltaic power generation control system, including:
the device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring at least two adjustment angles of a reflector of the photovoltaic power generation control system, and the reflector is arranged between front and rear rows of photovoltaic modules of the photovoltaic module array and used for reflecting sunlight to the photovoltaic module array of the photovoltaic power generation control system;
the adjusting module is used for sequentially adjusting the light reflecting piece to each adjusting angle and lasting for a preset time;
the determining module is used for determining a target adjusting angle of the reflecting piece according to the power generation amount corresponding to the photovoltaic module array under each adjusting angle;
and the control module is used for controlling the light reflecting piece to be adjusted to the target adjustment angle.
In addition, to achieve the above object, the present invention also provides a photovoltaic power generation control system, including: the photovoltaic power generation control method comprises a memory, a processor and a photovoltaic power generation control program stored in the memory and capable of running on the processor, wherein the photovoltaic power generation control program realizes the steps of the photovoltaic power generation control method when being executed by the processor.
In addition, to achieve the above object, the present invention also provides a photovoltaic power plant including: the photovoltaic module array is provided with a reflective supporting assembly between the front row photovoltaic modules and the rear row photovoltaic modules;
the light reflecting piece is rotatably arranged on the light reflecting support component;
and the photovoltaic module array and the reflective supporting component are respectively connected with the controller.
Optionally, the photovoltaic module arranged in the photovoltaic module array is a photovoltaic double-sided module.
The invention provides a photovoltaic power generation control method, a photovoltaic power generation control system and a photovoltaic power station, wherein the photovoltaic power generation control method, the photovoltaic power generation control system and the photovoltaic power station are based on reflectors of photovoltaic modules arranged in front and back rows of a photovoltaic module array, so that the reflectors are used for reflecting sunlight to the photovoltaic module array of the photovoltaic power station, gaps among the photovoltaic module arrays are reasonably used, simultaneously, the sunlight incident to the photovoltaic modules is increased, and the power generation amount of the photovoltaic module array is improved, in addition, at least two adjustment angles of the reflectors of the photovoltaic power station are obtained, the reflectors are sequentially adjusted to each adjustment angle and are continued for a preset time length, so that the reflectors continuously reflect the sunlight to the photovoltaic modules for the preset time length under each adjustment angle, the power generation amount corresponding to the photovoltaic module array under each adjustment angle of the reflectors is further determined, the target adjustment angle of the reflectors is determined according to the power generation amount corresponding to the photovoltaic module array under each adjustment angle, the target adjustment angle of the photovoltaic module is determined from all the adjustment angles, the reflector can reflect the sunlight to the maximum degree, the reflector is controlled to be adjusted to the target adjustment angle, the reflector can reflect the sunlight to the maximum degree to the photovoltaic module, and therefore the power generation amount of the photovoltaic module array is improved.
Drawings
Fig. 1 is a schematic structural diagram of a terminal device according to each embodiment of the photovoltaic power generation control method of the present invention;
FIG. 2 is a schematic view of a first configuration of the photovoltaic power plant of the present invention;
FIG. 3 is a second schematic view of a photovoltaic power plant of the present invention;
FIG. 4 is a schematic flow chart of a first embodiment of a photovoltaic power generation control method of the present invention;
fig. 5 is a schematic view illustrating adjustment of a reflector to each adjustment angle in the first embodiment of the photovoltaic power generation control method according to the present invention;
fig. 6 is a schematic diagram of a first process for determining a target adjustment angle in the first embodiment of the photovoltaic power generation control method according to the present invention;
fig. 7 is a schematic flow chart illustrating the process of determining a target adjustment angle in the first embodiment of the photovoltaic power generation control method according to the present invention;
FIG. 8 is a schematic flow chart of a photovoltaic power generation control method according to a second embodiment of the present invention;
fig. 9 is a schematic view of adjusting the adjustment angles of the photovoltaic module and the reflector in the second embodiment of the photovoltaic power generation control method of the present invention;
fig. 10 is a schematic block diagram of a photovoltaic power generation control system according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 11 | |
12 | |
| 2 | Reflective supporting |
21 | Supporting |
| 22 | |
3 | Reflecting |
| 4 | |
121 | Second rotating mechanism |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
The invention provides a photovoltaic power generation control method, which is applied to a photovoltaic power station and comprises the following steps:
acquiring at least two adjustment angles of a reflector of the photovoltaic power station, wherein the reflector is arranged between front and rear rows of photovoltaic modules of the photovoltaic module array and is used for reflecting sunlight to the photovoltaic module array of the photovoltaic power station;
sequentially adjusting the light reflecting piece to each adjusting angle for a preset time;
determining a target adjustment angle of the reflector according to the power generation amount corresponding to the photovoltaic module array under each adjustment angle;
and controlling the light reflecting piece to adjust to the target adjusting angle.
The photovoltaic power generation control method of the invention is based on the reflectors of the photovoltaic modules arranged in front and back rows of the photovoltaic module array, so that the reflectors are used for reflecting sunlight to the photovoltaic module array of the photovoltaic power station, the gap between the photovoltaic module arrays is reasonably used, simultaneously, the sunlight incident to the photovoltaic modules is increased, and the power generation amount of the photovoltaic module array is improved, in addition, at least two adjustment angles of the reflectors of the photovoltaic power station are obtained, the reflectors are sequentially adjusted to each adjustment angle and are continued for a preset time, so that the reflectors continuously reflect the sunlight for the preset time to the photovoltaic modules at each adjustment angle, the power generation amount corresponding to the photovoltaic module array at each adjustment angle of the reflectors is further determined, the target adjustment angle of the reflectors is determined according to the power generation amount corresponding to the photovoltaic module array at each adjustment angle, and the target adjustment angle at which the reflectors can maximally reflect the sunlight to the photovoltaic modules is determined from each adjustment angle, the reflector is controlled to adjust to a target adjustment angle, so that the reflector can reflect sunlight to the photovoltaic module to the maximum extent, and the power generation capacity of the photovoltaic module array is improved.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
The terminal device of the embodiment of the photovoltaic power generation control method can be a photovoltaic power station, a server for controlling the photovoltaic power station, and a photovoltaic power generation control system for controlling the photovoltaic power station.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a terminal device according to each embodiment of the photovoltaic power generation control method of the present invention.
As shown in fig. 1, the terminal device may include: a memory 101 and a processor 102. Those skilled in the art will appreciate that the block diagram of the terminal shown in fig. 1 does not constitute a limitation of the terminal, and that the terminal may include more or less components than those shown, or may combine certain components, or a different arrangement of components. The memory 101 stores therein an operating system and a photovoltaic power generation control program. The processor 102 is a control center of the terminal device, and the processor 102 executes the photovoltaic power generation control program stored in the memory 101 to implement the steps of the embodiments of the photovoltaic power generation control method of the present invention.
Optionally, the terminal device further includes a communication unit 103, and the communication unit 103 establishes data communication (the data communication may be IP communication or bluetooth channel) with other terminal devices through a network protocol, so as to implement data transmission with other terminal devices.
Optionally, the terminal device may further include a Display unit, where the Display unit includes a Display panel, and the Display panel may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like, and is used to output an interface for displaying browsing of a user.
Please refer to fig. 2, fig. 2 is a schematic diagram of a first structure of a photovoltaic power plant of the present invention, where the photovoltaic power plant includes:
a photovoltaic module array (not shown in the figure), wherein a reflective support assembly 2 is arranged between the photovoltaic modules 11 in the front row and the rear row of the photovoltaic module array;
the reflector 3 is rotatably arranged on the reflective support component 2;
and the photovoltaic module array and the reflective supporting component 2 are respectively connected with the controller 4.
Optionally, the reflection of light supporting component 2 includes support post 21 and first slewing mechanism 22, support post 21 set up in between the front and back row photovoltaic module of photovoltaic module array 1, the one end of first slewing mechanism 22 rotate set up in support post 21, the other end of first slewing mechanism 22 is provided with reflector 3, just first slewing mechanism 22 with controller 4 connects, in order to control through controller 4 first slewing mechanism 22's turned angle is in order to change reflector 3's inclination.
Optionally, the supporting columns 21 are telescopic rods, so that the height of the light reflecting member 3 can be changed through the telescopic rods.
Optionally, the photovoltaic module 11 of the photovoltaic module array is disposed on the photovoltaic support 12.
Optionally, referring to fig. 3, fig. 3 is a schematic diagram of a second structure of the photovoltaic power plant of the present invention, the photovoltaic support 12 is a photovoltaic tracking support, and a second rotating mechanism 121 in the photovoltaic tracking support is connected to the controller 4, so as to control an angle of the second rotating mechanism 121 and change an inclination angle of the photovoltaic module through the controller 4.
Optionally, the photovoltaic module 11 is a photovoltaic double-sided module.
Based on the structural block diagram of the photovoltaic power station, the invention provides various embodiments of the photovoltaic power generation control method.
In a first embodiment, the present invention provides a photovoltaic power generation control method, please refer to fig. 4, and fig. 4 is a schematic flow chart of the photovoltaic power generation control method according to the first embodiment of the present invention. In this embodiment, the photovoltaic power generation control method includes the steps of:
step S10, obtaining at least two adjustment angles of a light reflecting piece of the photovoltaic power station, wherein the light reflecting piece is arranged between front and rear rows of photovoltaic modules of the photovoltaic module array and is used for reflecting sunlight to the photovoltaic module array of the photovoltaic power station;
step S20, adjusting the light reflecting pieces to each adjusting angle in sequence and continuing for a preset time;
in this embodiment, photovoltaic module installs and carries out the electricity generation on the photovoltaic support, sets up the array that the photovoltaic support formed one row of row, and photovoltaic module installs and forms regularly arranged's photovoltaic module array on the photovoltaic support. The photovoltaic module arrays are approximately consistent in installation direction, so that in order to avoid mutual shielding of sunlight between the front row of photovoltaic modules and the rear row of photovoltaic modules, namely between the adjacent photovoltaic modules, a certain gap can be reserved between the arrays, and the photovoltaic modules can be guaranteed to obtain sufficient solar illumination and generate more electric energy. In order to enable the photovoltaic modules to receive more sunlight and improve the generating capacity of the photovoltaic modules, a reflecting piece is arranged between the photovoltaic modules in the front row and the rear row of the photovoltaic module array and used for reflecting sunlight to the photovoltaic module array of the photovoltaic power station.
The method comprises the steps of obtaining at least two adjustment angles of a light reflecting piece of the photovoltaic power generation system, and directly obtaining a plurality of preset angles as the at least two adjustment angles of the light reflecting piece through presetting the plurality of adjustment angles, wherein the plurality of preset adjustment angles are adjustment angles determined based on experimental data analysis, and when the light reflecting piece is adjusted to the adjustment angles, the power generation amount of a photovoltaic module array can be improved roughly, so that the target adjustment angle of the light reflecting piece can be quickly determined from the plurality of adjustment angles; or obtaining an adjustment unit value of the angle, and determining at least two adjustment angles of the light reflecting piece according to the initial adjustment angle and the adjustment unit value based on the initial adjustment angle at which the light reflecting piece is currently located, where the smaller the adjustment unit value is, the more accurate the target adjustment angle of the light reflecting piece determined from the at least two adjustment angles is, and this embodiment is not limited to this step.
Optionally, according to the initializationAdjusting the angle and adjusting the unit value, and determining at least two adjusting angles of the light reflecting piece. Illustratively, the initial adjustment angle is θ 0 That is, the angle between the reflecting support and the horizontal direction is theta 0 The adjusting unit value is delta theta, the first rotating mechanism on the reflecting support is sequentially rotated by taking the delta theta as an angle rotating unit, and at least two adjusting angles are determined to sequentially take the theta 0 -i·Δθ、θ 0 -(i-1)·Δθ……θ 0 、θ 0 +(i-1)·Δθ、θ 0 + i.DELTA.theta, where i is an integer and i is ≧ 2. Referring to fig. 5, fig. 5 is a schematic diagram illustrating adjustment of a reflector to each adjustment angle in a first embodiment of a photovoltaic power generation control method according to the present invention.
And sequentially adjusting the light reflecting piece to each adjusting angle and continuously keeping the preset time duration, so that the light reflecting piece continuously reflects the sunlight to the photovoltaic module for the preset time duration at each adjusting angle, and the power generation amount corresponding to the photovoltaic module array at each adjusting angle of the light reflecting piece is further determined.
Step S30, determining a target adjustment angle of the reflector according to the power generation amount corresponding to the photovoltaic module array under each adjustment angle;
and step S40, controlling the light reflecting piece to adjust to the target adjusting angle.
It should be noted that, because the reflector can reflect solar radiation to the adjacent photovoltaic module, and the adjacent photovoltaic module may also shelter from the reflector and receive solar radiation, so along with the change of solar altitude angle and azimuth, the reflector radiates or reflects solar radiation to the adjacent photovoltaic module, and the sunlight receiving amount of the photovoltaic module is different, and the effect of improving the power generation amount of the photovoltaic module is also different, and the accessible is adjusted the inclination angle of the reflector to the best inclination angle, that is, the target adjustment angle, so that the power generation amount of the photovoltaic module is the largest.
Optionally, the adjacent photovoltaic modules may be a front-row photovoltaic module, a rear-row photovoltaic module, a front-row photovoltaic module, and a rear-row photovoltaic module.
As an alternative implementation, please refer to fig. 6, where fig. 6 is a first flowchart illustrating a determination of a target adjustment angle according to a first embodiment of a photovoltaic power generation control method of the present invention, and step 30 includes:
step S31, acquiring the generated energy corresponding to the photovoltaic modules adjacent to the light reflecting piece respectively when the light reflecting piece is positioned at each adjusting angle;
and step S32, determining the target adjustment angle of the light reflecting piece according to the generated energy.
In order to maximize the power generation amount of the photovoltaic module, the target adjustment angle of the reflector is determined according to the power generation amounts respectively corresponding to the photovoltaic modules adjacent to the reflector when the reflector is positioned at each adjustment angle, the adjustment angle corresponding to the maximum power generation amount in the power generation amounts can be obtained, and the target adjustment angle of the reflector is determined according to the adjustment angle corresponding to the maximum power generation amount, namely the adjustment angle corresponding to the maximum power generation amount is used as the target adjustment angle of the reflector.
When each light reflecting piece arranged in the photovoltaic module array is adjusted to the target adjustment angle corresponding to the light reflecting piece, each light reflecting piece can reflect sunlight to the adjacent photovoltaic module to the maximum extent, so that the generated energy of the adjacent photovoltaic module reaches the maximum value, the generated energy of the photovoltaic module array further reaches the maximum extent, and the generated energy of the photovoltaic module array is improved.
Alternatively, the target adjustment angles respectively determined by the light reflecting pieces can be the same or different.
As an alternative embodiment, step S30 includes:
acquiring the adjustment angle corresponding to the maximum power generation amount in the power generation amounts respectively corresponding to the photovoltaic module arrays when all the light reflecting pieces are positioned at each adjustment angle;
and determining the target adjustment angles of all the light reflecting pieces according to the adjustment angle corresponding to the maximum power generation.
Compared with the way of obtaining the power generation amounts corresponding to the photovoltaic modules adjacent to the reflector at each adjustment angle and determining the target adjustment angle of the reflector according to the power generation amounts, the method of obtaining the adjustment angle corresponding to the maximum power generation amount among the power generation amounts corresponding to the photovoltaic module arrays at each adjustment angle of all the reflectors does not need to determine the corresponding target adjustment angle for each reflector, so that the complexity of data processing is reduced, the target adjustment angles of all the reflectors are determined uniformly according to the adjustment angle corresponding to the maximum power generation amount, and the power generation amount of the photovoltaic module arrays is improved while the operation is simplified.
As an alternative implementation, please refer to fig. 7, and fig. 7 is a schematic flow chart illustrating a process of determining a target adjustment angle in a first embodiment of a photovoltaic power generation control method according to the present invention. In this embodiment, step S30 includes:
step S33, acquiring the geographic position information of the photovoltaic power station and the current time;
step S34, determining the target adjustment angle of the reflector according to the geographic position information, the current time and the power generation amount corresponding to the photovoltaic module array under each adjustment angle.
It should be noted that, because the reflector can reflect solar radiation to the adjacent photovoltaic module, and the adjacent photovoltaic module may also shelter from the reflector and receive solar radiation, along with the change of solar altitude angle and azimuth, the reflector radiates or reflects solar radiation to the adjacent photovoltaic module, and photovoltaic module's sunlight receiving capacity is different, and it can also be different to promote photovoltaic module's generated energy effect. For example, when the sun is located right above or close to right above a photovoltaic module array of a photovoltaic power station, the shielding effect of the adjacent photovoltaic module shielding reflectors on receiving solar radiation is small; when the sun is positioned on the left side or the right side of the photovoltaic module array of the photovoltaic power station, the shielding influence of the adjacent photovoltaic modules on the reflector for receiving the solar radiation is large.
It can be understood that, in the practical application process, the geographic position information of the photovoltaic power station is different, the light reflecting piece radiates or reflects the solar light to the adjacent photovoltaic module, the sunlight receiving amount of the photovoltaic module is different, and the shielding influence of the adjacent photovoltaic module shielding the light reflecting piece to receive the solar radiation is different.
In this embodiment, a target adjustment angle of the reflector is determined according to the geographic position information, the current time and the power generation amount corresponding to the photovoltaic module array at each adjustment angle, and when the geographic position information is located in the preset position information and the current time is in the first preset time interval, which indicates that the sun is located on the left side or the right side of the photovoltaic module array of the photovoltaic power station, the shielding influence of the adjacent photovoltaic module shielding reflector on receiving solar radiation is large, and step S31 and step S32 are executed; when the geographical position information is located at the preset position information and the current time is located in the second preset time interval, the fact that the sun is located right above or close to the photovoltaic module array of the photovoltaic power station is indicated, the shielding influence of the adjacent photovoltaic modules for shielding the reflectors to receive solar radiation is small, the step is executed to obtain the adjustment angles corresponding to the maximum power generation amount in the power generation amounts respectively corresponding to the photovoltaic module arrays under all adjustment angles, and the target adjustment angles of all the reflectors are determined according to the adjustment angles corresponding to the maximum power generation amount.
To facilitate understanding of the present embodiment, the following description is made by way of example. Assuming that the fixed angle between the reflector and the horizontal direction is α, at the original time t0, the angle between the reflector and the horizontal direction is θ 0 At this time, the power generation amount of the power generation unit of the adjacent photovoltaic module, such as the front row photovoltaic module, is W0; the minimum adjustment unit angle of the rotation of the reflecting support is delta theta.
At the next adjustment time t1, the reflector can be adjusted to the maximum optimum seeking angle θ 0-i · Δ θ or θ 0+ i · Δ θ;
then sequentially rotating the light reflecting pieces by taking the delta theta as an adjusting unit angle to obtain an adjusted angle theta t; for example, θ t may take θ in turn 0 -i·Δθ、θ 0 -(i-1)·Δθ……θ 0 、θ 0 +(i-1)·Δθ、θ 0 + i.DELTA.theta, where i is an integer and i is ≧ 2.
And respectively staying for a preset time period delta T at each adjusting angle, and respectively measuring the power generation amount W (theta T) of the power generation unit of the front row of photovoltaic module corresponding to the preset time period, namely W (theta 0-i delta theta), W [ theta 0- (i-1) · delta theta ] … … W (theta 0), W [ theta 0+ (i-1) · delta theta ], W (theta 0+ i · delta theta).
The maximum value of the generated energy is obtained as W (theta t), namely max { W (theta 0-i delta theta), W [ theta 0- (i-1) · delta theta ] … … W (theta 0), W [ theta 0+ (i-1) · delta theta ], W (theta 0+ i · delta theta) }, and the angle theta t is the target adjusting angle of the reflector at the moment.
In the technical scheme disclosed in the embodiment, based on the reflectors arranged on the photovoltaic modules in the front row and the back row of the photovoltaic module array, the reflectors are used for reflecting sunlight to the photovoltaic module array of the photovoltaic power station, so that the gap between the photovoltaic module arrays is reasonably used, the sunlight incident to the photovoltaic modules is increased, and the power generation amount of the photovoltaic module array is improved, in addition, at least two adjustment angles of the reflectors of the photovoltaic power station are obtained, the reflectors are sequentially adjusted to each adjustment angle and continuously for a preset time, so that the reflectors continuously reflect the sunlight for the preset time to the photovoltaic modules at each adjustment angle, the power generation amount corresponding to the photovoltaic module array at each adjustment angle of the reflectors is further determined, the target adjustment angle of the reflectors is determined according to the power generation amount corresponding to the photovoltaic module array at each adjustment angle, and the target adjustment angle at which the reflectors can maximally reflect the sunlight to the photovoltaic modules is determined from each adjustment angle, the reflector is controlled to adjust to a target adjustment angle, so that the reflector can reflect sunlight to the photovoltaic module to the maximum extent, and the power generation capacity of the photovoltaic module array is improved.
In a second embodiment proposed based on the first embodiment, please refer to fig. 8, and fig. 8 is a schematic flow chart of a second embodiment of a photovoltaic power generation control method according to the present invention. In this embodiment, the photovoltaic power generation control method further includes:
step S50, acquiring the geographic position information of the photovoltaic power station and the current time;
step S60, determining a target angle of the photovoltaic module according to the geographical position information and the current time;
and step S70, controlling the photovoltaic module to adjust to the target angle, and executing step S10.
In the practical application process, the geographic positions of the photovoltaic power stations are different, the heights of the sun are different, and different influences can be generated on the sunlight receiving capacity of the photovoltaic modules. When the photovoltaic support adopts the tracking support, the second rotating mechanism of the photovoltaic support and the first rotating mechanism of the reflector are connected with the controller, when the height and the direction of the sun change, the rotation instructions are sent to the second rotating mechanism of the photovoltaic support and the first rotating mechanism of the reflector through calculation of a preset algorithm, the photovoltaic components and the reflector can rotate respectively, and the photovoltaic components and the reflector act cooperatively, so that the solar radiation received by the front and back surfaces of adjacent photovoltaic components changes, the optimal adjustment angle of the reflector is further determined, and the generated energy of the adjacent photovoltaic components is maximum.
Fig. 9 is a schematic view of adjusting the adjustment angles of the photovoltaic module and the reflector in a second embodiment of the photovoltaic power generation control method of the present invention.
For the convenience of understanding the present embodiment, the following description will be made by way of example, assuming that t0 is the original time, and the fixed angle between the tracking support and the horizontal direction is α 0 The angle between the reflecting member and the horizontal direction is theta 0 At this time, the power generation amount of the power generation unit of the front row photovoltaic module is W0. At the next adjustment time t1 of the reflector, the target inclination of the tracking support is determined.
Obtaining geographic position information such as longitude and latitude information of a power station corresponding to the photovoltaic power station;
and calculating to obtain the theoretical optimal inclination angle at the time t1, namely the target angle alpha 1 according to an astronomical algorithm.
And the controller issues an instruction to the second rotating mechanism of the tracking support, so that the photovoltaic module is adjusted to the angle alpha 1 to complete the adjustment of the inclination angle of the photovoltaic module.
Assuming that the power generation amount of the power generation unit of the adjacent photovoltaic module, such as the front row photovoltaic module, is W0, the minimum adjustment unit angle of the rotation of the reflective support is delta theta.
At the next adjustment time t1, the reflector can be adjusted to the maximum optimum seeking angle θ 0-i · Δ θ or θ 0+ i · Δ θ;
then sequentially rotating the light reflecting pieces by taking the delta theta as an adjusting unit angle to obtain an adjusted angle theta t; for example, θ t mayTake theta in sequence 0 -i·Δθ、θ 0 -(i-1)·Δθ……θ 0 、θ 0 +(i-1)·Δθ、θ 0 + i.DELTA.theta, where i is an integer and i is ≧ 2.
And respectively staying for a preset time period delta T at each adjusting angle, and respectively measuring the power generation amount W (theta T) of the power generation unit of the front row of photovoltaic module corresponding to the preset time period, namely W (theta 0-i delta theta), W [ theta 0- (i-1) · delta theta ] … … W (theta 0), W [ theta 0+ (i-1) · delta theta ], W (theta 0+ i · delta theta).
The maximum value of the generated energy is obtained as W (theta t), namely max { W (theta 0-i delta theta), W [ theta 0- (i-1) · delta theta ] … … W (theta 0), W [ theta 0+ (i-1) · delta theta ], W (theta 0+ i · delta theta) }, at the moment, the angle theta t is the target adjusting angle of the reflector, and the reflector is controlled to be adjusted to the target adjusting angle so as to achieve adjustment of the reflector.
Optionally, step S60 includes:
and inputting the geographic position information and the current time into a preset astronomical algorithm to obtain the target angle of the photovoltaic double-sided assembly at the current time.
In the technical scheme disclosed in this embodiment, with the control system who trails the support with fixed photovoltaic support sharing, realize tracking when photovoltaic module and reflector, reduce the cost, promote the generated energy.
Referring to fig. 10, fig. 10 is a schematic diagram of a module composition of the photovoltaic power generation control system of the present invention, and the photovoltaic power generation control system 100 includes:
an obtaining module 110, configured to obtain at least two adjustment angles of a light reflecting element of the photovoltaic power station, where the light reflecting element is disposed between front and rear rows of photovoltaic modules of the photovoltaic module array, and is configured to reflect sunlight to the photovoltaic module array of the photovoltaic power station;
the adjusting module 120 is configured to sequentially adjust the light reflecting elements to each of the adjustment angles for a preset time;
the determining module 130 is configured to determine a target adjustment angle of the light reflecting element according to the power generation amount corresponding to the photovoltaic module array at each adjustment angle;
and the control module 140 is configured to control the light reflecting member to adjust to the target adjustment angle.
In the embodiment of the photovoltaic power generation control system provided by the invention, all technical features of each embodiment of the photovoltaic power generation control method are included, and the expanding and explaining contents of the specification are basically the same as those of each embodiment of the photovoltaic power generation control method, and are not described again here.
The invention also provides a photovoltaic power generation control system, which comprises: the photovoltaic power generation control method comprises a memory, a processor and a photovoltaic power generation control program which is stored in the memory and can run on the processor, wherein when the photovoltaic power generation control program is executed by the processor, the steps of the photovoltaic power generation control method in any one of the embodiments are realized.
The invention also proposes a photovoltaic power station comprising: the photovoltaic module array is provided with a reflective supporting assembly between the front row photovoltaic modules and the rear row photovoltaic modules;
the light reflecting piece is rotatably arranged on the light reflecting support component;
and the photovoltaic module array and the reflective supporting component are respectively connected with the controller.
Optionally, the photovoltaic module arranged in the photovoltaic module array is a photovoltaic double-sided module.
In the embodiments of the photovoltaic power generation control system and the photovoltaic power station provided by the present invention, all technical features of the embodiments of the photovoltaic power generation control method are included, and the contents of the expansion and the explanation of the specification are basically the same as those of the embodiments of the photovoltaic power generation control method, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a mobile terminal (such as a mobile phone, a computer, a server, a controlled terminal, or a network device) to execute the method of each embodiment of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A photovoltaic power generation control method is applied to a photovoltaic power station, and comprises the following steps:
acquiring at least two adjustment angles of a reflector of the photovoltaic power station, wherein the reflector is arranged between front and rear rows of photovoltaic modules of the photovoltaic module array and is used for reflecting sunlight to the photovoltaic module array of the photovoltaic power station;
sequentially adjusting the light reflecting piece to each adjusting angle for a preset time;
determining a target adjustment angle of the reflector according to the power generation amount corresponding to the photovoltaic module array under each adjustment angle;
and controlling the light reflecting piece to adjust to the target adjusting angle.
2. The method of claim 1, wherein the step of determining the target adjustment angle of the reflector based on the power generation of the photovoltaic module array at each of the adjustment angles comprises:
acquiring the power generation amount corresponding to the photovoltaic modules adjacent to the light reflecting piece respectively when the light reflecting piece is positioned at each adjusting angle;
and determining a target adjustment angle of the light reflecting piece according to the generated energy.
3. The method of claim 1, wherein the step of determining the target adjustment angle of the reflector based on the power generation of the photovoltaic module array at each of the adjustment angles comprises:
acquiring the adjustment angle corresponding to the maximum power generation amount in the power generation amounts respectively corresponding to the photovoltaic module arrays when all the light reflecting pieces are positioned at each adjustment angle;
and determining the target adjustment angles of all the light reflecting pieces according to the adjustment angle corresponding to the maximum power generation.
4. The method of claim 1, wherein the step of determining the target adjustment angle of the reflector based on the power generation of the photovoltaic module array at each of the adjustment angles comprises:
acquiring geographic position information of the photovoltaic power station and current time;
and determining the target adjustment angle of the light reflecting piece according to the geographic position information, the current time and the power generation amount corresponding to the photovoltaic module array under each adjustment angle.
5. The method of claim 1, wherein the photovoltaic modules of the photovoltaic module array are rotatably mounted on a tracking rack, and wherein the photovoltaic power generation control method further comprises:
acquiring geographic position information of the photovoltaic power station and current time;
determining a target angle of the photovoltaic module according to the geographic position information and the current time;
and controlling the photovoltaic assembly to adjust to the target angle, and executing the step of obtaining at least two adjustment angles of the light reflecting piece of the photovoltaic power station.
6. The method of claim 5, wherein the step of determining the target angle of the photovoltaic module based on the geographic location information and the current time comprises:
and inputting the geographical position information into a preset astronomical algorithm to obtain the target angle of the photovoltaic double-sided assembly at the current time.
7. A photovoltaic power generation control system characterized by comprising:
the device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring at least two adjustment angles of a reflector of the photovoltaic power station, the reflector is arranged between front and rear rows of photovoltaic modules of the photovoltaic module array and is used for reflecting sunlight to the photovoltaic module array of the photovoltaic power station;
the adjusting module is used for sequentially adjusting the light reflecting piece to each adjusting angle and lasting for a preset time;
the determining module is used for determining a target adjusting angle of the reflecting piece according to the power generation amount corresponding to the photovoltaic module array under each adjusting angle;
and the control module is used for controlling the light reflecting piece to be adjusted to the target adjustment angle.
8. A photovoltaic power generation control system characterized by comprising: a memory, a processor, and a photovoltaic power generation control program stored in the memory and executable on the processor, the photovoltaic power generation control program when executed by the processor implementing the steps of the photovoltaic power generation control method of any one of claims 1-6.
9. A photovoltaic power plant, characterized in that the photovoltaic power plant comprises: the photovoltaic module array is provided with a light reflecting support assembly between the front row of photovoltaic modules and the rear row of photovoltaic modules;
the light reflecting piece is rotatably arranged on the light reflecting support component;
and the photovoltaic module array and the reflective supporting component are respectively connected with the controller.
10. The photovoltaic power plant of claim 9 wherein the photovoltaic modules of the array of photovoltaic modules are photovoltaic bifacial modules.
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