CN117294225A - Method for improving generating capacity of photovoltaic power station by finely arranging photovoltaic arrays - Google Patents
Method for improving generating capacity of photovoltaic power station by finely arranging photovoltaic arrays Download PDFInfo
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- CN117294225A CN117294225A CN202311004558.2A CN202311004558A CN117294225A CN 117294225 A CN117294225 A CN 117294225A CN 202311004558 A CN202311004558 A CN 202311004558A CN 117294225 A CN117294225 A CN 117294225A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000003491 array Methods 0.000 title description 3
- 238000005286 illumination Methods 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 description 11
- 238000010248 power generation Methods 0.000 description 5
- 238000012938 design process Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 241001442234 Cosa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 101150037486 cotC gene Proteins 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a method for improving the generated energy of a photovoltaic power station by finely arranging a photovoltaic array, which relates to the technical field of photovoltaic array arrangement and comprises the following steps: arranging a plurality of rows of parallel photovoltaic plates from south to north, wherein the inclination angles of the photovoltaic plates from the first row to the penultimate row are consistent with the horizontal plane; setting the lowest point of the photovoltaic panels in the third row to be higher than the highest point of the photovoltaic panels in the fourth row; setting the lowest point of the photovoltaic panels of the penultimate row to be higher than the highest point of the photovoltaic panels of the third penultimate row; setting the lowest point of the photovoltaic panels of the first last row to be higher than the highest point of the photovoltaic panels of the second last row; and setting the inclination angle of the photovoltaic plates in the first row to be larger than the inclination angle of the photovoltaic plates in the second row to be larger than the inclination angle of the photovoltaic. According to the invention, the heights of the photovoltaic panels from the third row to the first row are gradually increased, and the included angle of the photovoltaic panels from the first row is larger than the included angle of the rest of the photovoltaic panels and the horizontal plane, so that the illumination angle control is improved, the occupied area is saved, and the shadow electric quantity loss of the photovoltaic power station is reduced.
Description
Technical Field
The invention relates to the technical field of photovoltaic array arrangement, in particular to a method for improving the generated energy of a photovoltaic power station by finely arranging a photovoltaic array.
Background
Currently, photovoltaic power stations are increasingly under tension, and available land resources are increasingly complex. The complexity of the method is not only due to the influence of three-dimensional terrain, but also due to the fact that the azimuth angle of the arrangeable area shows a narrow and long trend.
The existing solar matrix arrangement mainly considers the inclination angles of all photovoltaic panels in the whole north-south direction on the whole photovoltaic site according to the latitude of the photovoltaic site to be arranged, and determines a north-south interval distance value of all the photovoltaic panels on the whole photovoltaic site by calculating the shadow length of the photovoltaic panels in the north-south direction according to the inclination angles of the photovoltaic panels in the north-south direction.
In the photovoltaic array design process of a photovoltaic power station, the mounting angles of the brackets in the photovoltaic array are generally consistent, but the array spacing cannot be increased randomly due to the limitation of land area, so that shadows are inevitably shielded between different rows of photovoltaic panels in the array design process, and therefore, part of generated energy is lost.
The arrangement of the photovoltaic square matrix is mainly analyzed according to the shielding condition of the front row and the rear row of the sun, and the array spacing selection of the photovoltaic square matrix is mainly involved. In general, the calculation of the power generation amount is performed on the premise that the square matrix surface is completely free from shadows. Therefore, if the solar cell cannot be directly illuminated by sunlight, only scattered light is used to generate electricity, and the amount of electricity generated is reduced by about 10% -20% compared with that of the shadow-free solar cell. For this case, correction of the theoretical calculation value is required. At present, when objects such as buildings and mountains exist around the square matrix, after the sun comes out, shadows exist around the buildings and mountains, so that the shadows should be avoided as much as possible when the place where the square matrix is laid is selected, and the influence of the shadows on the generated energy is reduced to the minimum. In addition, when the square matrixes are arranged front and back, after the distance between the rear square matrix and the front square matrix is close, the shadow of the front square matrix can influence the generating capacity of the rear square matrix, and the general determination principle that the distance between the photovoltaic array and the photovoltaic array is influenced is that the square matrixes of the solar cells should not be shielded from each other in the period from 9:00 to 3:00 pm from winter to the earliest.
The design assembly length is L, the azimuth angle is A, the inclination angle is B, the sun incidence angle (elevation angle) is C, and the photovoltaic array interval is D, then there are:
D＝L*cosA*sinB*cotC
this formula should be calculated on winter solstice (the longest shadow day) day, when the latitude is higher, the sun incident angle C is smaller, the pitch of Fang Guangfu array is increased, and the area of the installation place is correspondingly increased. For the photovoltaic array with snow prevention measures, the inclination angle B is larger, so that the height of the square array is increased, and the distance between the photovoltaic arrays is correspondingly increased to avoid the influence of shadows. The specific photovoltaic array design is that the azimuth angle and the inclination angle are reasonably determined, and meanwhile, comprehensive consideration is carried out, so that the square matrix can reach the optimal state. In general, the arrangement mode of the whole photovoltaic power station array adopts a uniform inclination angle and a uniform interval design. The arrangement of the photovoltaic lattice array has the following problems:
1. the whole photovoltaic array arrangement of the traditional photovoltaic power station is rough and tidy, is not suitable for the ground, and the most suitable inclination angle, spacing and layout of each area are planned finely.
2. The existing supports are consistent in height, the whole photovoltaic power station is the same in height and the distance, and an optimization process is absent.
3. The existing photovoltaic power station is simple in design layout, and fine 'arranging and arranging' is not achieved. The whole photovoltaic station is a fixed support or the whole photovoltaic station is an adjustable or tracking support.
Therefore, a method for improving the power generation capacity of the photovoltaic power station by finely arranging the photovoltaic array is provided by a person skilled in the art so as to solve the problems in the background art.
Disclosure of Invention
The invention provides a method for improving the power generation capacity of a photovoltaic power station by finely arranging a photovoltaic array, which solves the problems in the background technology.
In order to achieve the above object, the present invention provides the following technical solutions:
the method for improving the generated energy of the photovoltaic power station by finely arranging the photovoltaic array comprises the following steps of:
step one, arranging a plurality of rows of parallel photovoltaic plates, wherein the inclination angles of the photovoltaic plates from the first row to the second last row are consistent with the horizontal plane from the south to the north;
setting the lowest point of the photovoltaic panels in the third row to be higher than the highest point of the photovoltaic panels in the fourth row;
setting the lowest point of the photovoltaic panels in the second last row to be higher than the highest point of the photovoltaic panels in the third last row;
setting that the lowest point of the photovoltaic panels in the first row of the penultimate photovoltaic panels is higher than the highest point of the photovoltaic panels in the second row of the penultimate photovoltaic panels;
setting the inclination angle of the photovoltaic plates in the first row to the horizontal plane to be larger than the inclination angle of the photovoltaic plates in the second row to the horizontal plane;
and step six, setting the last row of photovoltaic panels to be installed by adopting an optimal inclination angle, wherein the optimal inclination angle degree is implemented by adopting the opinion issued by a North satellite power grid.
In the technical scheme, the method for improving the generated energy of the photovoltaic power station by finely arranging the photovoltaic array has the following beneficial effects: through setting up the height of penultimate row to penultimate row photovoltaic board and rising gradually, and the contained angle of penultimate row's photovoltaic board is greater than the contained angle of other photovoltaic boards and horizontal plane, upgrades the photovoltaic power plant from a two-dimensional plane to 3D three-dimensional management, has promoted illumination angle control, has saved area, has reduced photovoltaic power plant's shadow electric quantity loss simultaneously.
Detailed Description
The present invention will be described in further detail below in order to enable those skilled in the art to better understand the technical solutions of the present invention.
The method for improving the generating capacity of the photovoltaic power station by finely arranging the photovoltaic array comprises the following steps of:
step one, arranging a plurality of rows of parallel photovoltaic plates, wherein the inclination angles of the photovoltaic plates from the first row to the second last row are consistent with the horizontal plane from the south to the north;
setting the lowest point of the photovoltaic panels in the third row to be higher than the highest point of the photovoltaic panels in the fourth row;
setting the lowest point of the photovoltaic panels in the second last row to be higher than the highest point of the photovoltaic panels in the third last row;
setting that the lowest point of the photovoltaic panels in the first row of the penultimate photovoltaic panels is higher than the highest point of the photovoltaic panels in the second row of the penultimate photovoltaic panels;
setting the inclination angle of the photovoltaic plates in the first row to the horizontal plane to be larger than the inclination angle of the photovoltaic plates in the second row to the horizontal plane;
and step six, setting the last row of photovoltaic panels to be installed by adopting an optimal inclination angle, wherein the optimal inclination angle degree is implemented by adopting the opinion issued by a North satellite power grid.
According to the invention, the heights of the photovoltaic panels from the third row to the first row are gradually increased, the included angle of the photovoltaic panels from the first row is larger than the included angle of the rest of the photovoltaic panels and the horizontal plane, so that the photovoltaic power station is upgraded from a two-dimensional plane to 3D three-dimensional management, the illumination angle control is improved, the occupied area is saved, and the shadow electric quantity loss of the photovoltaic power station is reduced.
It would be unsafe for the photovoltaic support to be more than 5 meters in height. In principle, the lower the support is, the safer the wind load can be. However, in order to obtain more light sources, the height of the photovoltaic power generation national standard mounting support is generally required to be 3.5 meters to 4.5 meters, so that the array is preferably arranged in a 3D three-dimensional way by adopting three rows of heights.
The last row of photovoltaic panels of the application adopts the installation of the optimal dip angle because of not considering shadows, the optimal dip angle degree adopts the opinion issued by the power grid of the North Star, and the opinion issued by the public number of the North Star distributed photovoltaic is as follows:
fast table for longitude and latitude, average peak sunshine hours, optimal inclination angle and annual average generating capacity of various cities
The radiation dose data of the above table are taken from NASA database and disclosed by the distributed photovoltaic public number of the arctic; the upper table data is a data table of a part of provinces and a certain city county in the provinces; the system efficiency is 78%, the attenuation of the component is not more than 20% in 25 years, and the installed capacity of the IMWp component is used as the power generation amount to calculate.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the foregoing description is illustrative in nature and is not to be construed as limiting the scope of the invention as claimed.
Claims (1)
1. The method for improving the generated energy of the photovoltaic power station by finely arranging the photovoltaic array is characterized by comprising the following steps of:
step one, arranging a plurality of rows of parallel photovoltaic plates, wherein the inclination angles of the photovoltaic plates from the first row to the second last row are consistent with the horizontal plane from the south to the north;
setting the lowest point of the photovoltaic panels in the third row to be higher than the highest point of the photovoltaic panels in the fourth row;
setting the lowest point of the photovoltaic panels in the second last row to be higher than the highest point of the photovoltaic panels in the third last row;
setting that the lowest point of the photovoltaic panels in the first row of the penultimate photovoltaic panels is higher than the highest point of the photovoltaic panels in the second row of the penultimate photovoltaic panels;
setting the inclination angle of the photovoltaic plates in the first row to the horizontal plane to be larger than the inclination angle of the photovoltaic plates in the second row to the horizontal plane;
and step six, setting the last row of photovoltaic panels to be installed by adopting an optimal inclination angle, wherein the optimal inclination angle degree is implemented by adopting the opinion issued by a North satellite power grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311004558.2A CN117294225A (en) | 2023-08-10 | 2023-08-10 | Method for improving generating capacity of photovoltaic power station by finely arranging photovoltaic arrays |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311004558.2A CN117294225A (en) | 2023-08-10 | 2023-08-10 | Method for improving generating capacity of photovoltaic power station by finely arranging photovoltaic arrays |
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| Publication Number | Publication Date |
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| CN117294225A true CN117294225A (en) | 2023-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311004558.2A Pending CN117294225A (en) | 2023-08-10 | 2023-08-10 | Method for improving generating capacity of photovoltaic power station by finely arranging photovoltaic arrays |
Country Status (1)
| Country | Link |
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| CN (1) | CN117294225A (en) |
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2023
- 2023-08-10 CN CN202311004558.2A patent/CN117294225A/en active Pending
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