CN112883323B - Photovoltaic power generation system, area determination method and device thereof, medium and processor - Google Patents
Photovoltaic power generation system, area determination method and device thereof, medium and processor Download PDFInfo
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- CN112883323B CN112883323B CN202110030649.8A CN202110030649A CN112883323B CN 112883323 B CN112883323 B CN 112883323B CN 202110030649 A CN202110030649 A CN 202110030649A CN 112883323 B CN112883323 B CN 112883323B
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- G06F17/10—Complex mathematical operations
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The invention discloses a photovoltaic area determining method and device of a photovoltaic power generation system, the photovoltaic power generation system, a storage medium and a processor, wherein the method comprises the following steps: under the condition that a shadow analysis area is provided with a shielding object, acquiring area parameters of the shadow analysis area, and acquiring shielding object parameters of the shielding object; determining a shadow area of the shade according to the region parameter and the shade parameter; taking the area difference between the measured area of the shadow analysis area and the shadow area as the effective area of the shadow analysis area; and determining the number of the photovoltaic panels which can be installed in the shadow analysis area according to the effective area of the shadow analysis area and the photovoltaic area of each photovoltaic panel in the photovoltaic power generation system. According to the scheme, shadow calculation of the photovoltaic power generation system is achieved by analyzing the shadow length generated by surrounding obstacles without manual modeling, so that time and labor are saved.
Description
Technical Field
The invention belongs to the technical field of photovoltaic power generation, relates to a photovoltaic power generation system, an area determining method, an area determining device, a medium and a processor thereof, in particular to a photovoltaic area determining method, an area determining device, a photovoltaic power generation system, a storage medium and a processor of the photovoltaic power generation system, and particularly relates to a method, an area determining device, a photovoltaic power generation system, a storage medium and a processor of the photovoltaic power generation system, which are used for calculating the area of a paved photovoltaic module through shadow analysis.
Background
Photovoltaic power generation is widely applied, shadow calculation of a photovoltaic power generation system in a related scheme is basically carried out by analyzing the length of shadows generated by surrounding obstacles through manual modeling, and the method is basically completed by professionals and takes time and labor.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention aims to provide a photovoltaic area determining method and device of a photovoltaic power generation system, the photovoltaic power generation system, a storage medium and a processor, so as to solve the problems that the time and the labor are consumed in analyzing the shadow length generated by surrounding obstacles through manual modeling, and achieve the effects of time and labor saving in realizing the shadow calculation of the photovoltaic power generation system by analyzing the shadow length generated by the surrounding obstacles without manual modeling.
The invention provides a photovoltaic area determining method of a photovoltaic power generation system, which comprises the following steps: under the condition that a shadow analysis area is provided with a shielding object, acquiring area parameters of the shadow analysis area, and acquiring shielding object parameters of the shielding object; the shadow analysis area is an area which needs shadow analysis to be used for installing the photovoltaic panel; the shelter comprises: at least one of parapet and an obstacle; determining a shadow area of the shade according to the region parameter and the shade parameter; taking the area difference between the measured area of the shadow analysis area and the shadow area as the effective area of the shadow analysis area; and determining the number of the photovoltaic panels which can be installed in the shadow analysis area according to the effective area of the shadow analysis area and the photovoltaic area of each photovoltaic panel in the photovoltaic power generation system.
In some embodiments, further comprising: determining whether the shadow analysis area has a shielding object; if the shadow analysis area has the shielding object, acquiring the area parameter of the shadow analysis area and the shielding object parameter of the shielding object, and determining the shadow area of the shielding object according to the area parameter and the shielding object parameter; and if the shadow analysis area does not have the shielding object, taking the measurement area of the shadow analysis area as the effective area of the shadow analysis area.
In some embodiments, wherein the area parameters of the shadow analysis area include: at least one of a location and a region orientation of the shadow analysis region; the region orientation includes: any azimuth of north-south, south-east, south-west; the shelter parameters of the shelter include: in the case that the shielding object is a parapet, the parapet is high and long; in the case that the obstruction is an obstacle, the length and height of the obstacle; the length comprises: any one of east-west length and north-south length; the parapet wall is characterized in that the number of parapets is more than one, and the length of the barrier is more than one.
In some embodiments, determining the shadow area of the obstruction from the region parameter and the obstruction parameter comprises: determining the longitude and latitude of the shadow analysis area according to the location of the shadow analysis area in the area parameter; determining the declination angle of the shadow analysis area according to the current days; determining a solar zenith angle and a solar azimuth angle according to the declination angle of the shadow analysis area and the setting time of the photovoltaic panel; determining shadow parameters of the shade according to the solar zenith angle and the solar azimuth angle and combining the shade parameters of the shade; and determining the product of the shadow parameters of the shade and the corresponding parameters in the shade parameters as the shadow area of the shade.
In some embodiments, determining the shadow parameters of the obstruction in combination with the obstruction parameters of the obstruction from the solar zenith angle and the solar azimuth angle comprises: when the shielding object is a parapet and the direction of the shadow analysis area is positive north and south, the shadow length of the parapet is the absolute value of the product of the length of the parapet, the tangent value of the solar zenith angle and the sine value or the cosine value of the solar azimuth angle; when the shielding object is a parapet and the shadow analysis area is oriented in the south east or the south west direction, the shadow length of the parapet is the absolute value of the product of the length of the parapet, the tangent value of the solar zenith angle and the sine value or the cosine value of the azimuth difference or the azimuth sum of the solar azimuth angle and the area azimuth; when the shielding object is an obstacle and the direction of the shadow analysis area is positive north-positive or south-east or south-west, the shadow length of the obstacle is the absolute value of the product of the length of the obstacle, the tangent value of the solar zenith angle and the sine value or the cosine value of the solar azimuth angle; the length of the obstacle is the distance between the roof where the shadow analysis area is located and the highest point of the obstacle.
In accordance with another aspect of the present invention, there is provided a photovoltaic area determining apparatus of a photovoltaic power generation system, comprising: an acquisition unit configured to acquire, in a case where a shadow analysis area has a shutter, an area parameter of the shadow analysis area, and acquire a shutter parameter of the shutter; the shadow analysis area is an area which needs shadow analysis to be used for installing the photovoltaic panel; the shelter comprises: at least one of parapet and an obstacle; a determining unit configured to determine a shadow area of the obstruction according to the region parameter and the obstruction parameter; the determination unit is further configured to determine an area difference between the measured area of the shadow analysis area and the shadow area as an effective area of the shadow analysis area; the determination unit is further configured to determine the number of photovoltaic panels that can be installed in the shadow analysis area according to an effective area of the shadow analysis area and a photovoltaic area of each photovoltaic panel in the photovoltaic power generation system.
In some embodiments, further comprising: the determining unit is further configured to determine whether the shadow analysis area has a shielding object; the determining unit is further configured to acquire an area parameter of the shadow analysis area and a shutter parameter of the shutter if the shadow analysis area has the shutter, and determine a shadow area of the shutter according to the area parameter and the shutter parameter; the determination unit is further configured to take a measurement area of the shadow analysis area as an effective area of the shadow analysis area if the shadow analysis area has no obstruction.
In some embodiments, wherein the area parameters of the shadow analysis area include: at least one of a location and a region orientation of the shadow analysis region; the region orientation includes: any azimuth of north-south, south-east, south-west; the shelter parameters of the shelter include: in the case that the shielding object is a parapet, the parapet is high and long; in the case that the obstruction is an obstacle, the length and height of the obstacle; the length comprises: any one of east-west length and north-south length; the parapet wall is characterized in that the number of parapets is more than one, and the length of the barrier is more than one.
In some embodiments, the determining unit determines a shadow area of the obstruction according to the region parameter and the obstruction parameter, including: determining the longitude and latitude of the shadow analysis area according to the location of the shadow analysis area in the area parameter; determining the declination angle of the shadow analysis area according to the current days; determining a solar zenith angle and a solar azimuth angle according to the declination angle of the shadow analysis area and the setting time of the photovoltaic panel; determining shadow parameters of the shade according to the solar zenith angle and the solar azimuth angle and combining the shade parameters of the shade; and determining the product of the shadow parameters of the shade and the corresponding parameters in the shade parameters as the shadow area of the shade.
In some embodiments, the determining unit determines a shadow parameter of the obstruction according to the solar zenith angle and the solar azimuth angle in combination with an obstruction parameter of the obstruction, including: when the shielding object is a parapet and the direction of the shadow analysis area is positive north and south, the shadow length of the parapet is the absolute value of the product of the length of the parapet, the tangent value of the solar zenith angle and the sine value or the cosine value of the solar azimuth angle; when the shielding object is a parapet and the shadow analysis area is oriented in the south east or the south west direction, the shadow length of the parapet is the absolute value of the product of the length of the parapet, the tangent value of the solar zenith angle and the sine value or the cosine value of the azimuth difference or the azimuth sum of the solar azimuth angle and the area azimuth; when the shielding object is an obstacle and the direction of the shadow analysis area is positive north-positive or south-east or south-west, the shadow length of the obstacle is the absolute value of the product of the length of the obstacle, the tangent value of the solar zenith angle and the sine value or the cosine value of the solar azimuth angle; the length of the obstacle is the distance between the roof where the shadow analysis area is located and the highest point of the obstacle.
In accordance with another aspect of the present invention, there is provided a photovoltaic power generation system comprising: the photovoltaic area determining device of the photovoltaic power generation system described above.
In accordance with the above method, a further aspect of the present invention provides a storage medium, where the storage medium includes a stored program, where the program, when executed, controls a device in which the storage medium is located to perform the above method for determining a photovoltaic area of a photovoltaic power generation system.
In accordance with a further aspect of the present invention, there is provided a processor for running a program, wherein the program is run to perform the method for determining the photovoltaic area of the photovoltaic power generation system described above.
According to the scheme, the shadow calculation of the photovoltaic power generation system is realized by collecting the height and the length of the obstacle in the area where the shadow calculation is required and combining the shadow generated by the obstacle at each time point of the project and the obstacle category calculation, so that the area and drawing parameters of the photovoltaic panel which can be paved actually are obtained, and the shadow calculation of the photovoltaic power generation system is realized by analyzing the shadow length generated by the surrounding obstacle without manual modeling, so that time and labor are saved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a flow chart of an embodiment of a method for determining a photovoltaic area of a photovoltaic power generation system according to the present invention;
FIG. 2 is a flow chart of an embodiment of determining a shadow area of an obstruction in the method of the present invention;
FIG. 3 is a flow chart of an embodiment of determining whether a shadow analysis area has a shadow in the method of the present invention;
FIG. 4 is a schematic view of a photovoltaic area determining apparatus of a photovoltaic power generation system according to an embodiment of the present invention;
FIG. 5 is a schematic view of an embodiment of a parapet shadow area;
FIG. 6 is a flow chart of an embodiment of a method for calculating a paved photovoltaic module area by shadow analysis;
fig. 7 is a schematic plan view of a roof.
In the embodiment of the present invention, reference numerals are as follows, in combination with the accompanying drawings:
102-an acquisition unit; 104-determining unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to an embodiment of the present invention, a method for determining a photovoltaic area of a photovoltaic power generation system is provided, as shown in a flowchart of an embodiment of the method of the present invention in fig. 1. The photovoltaic area determination method of the photovoltaic power generation system may include: step S110 to step S140.
At step S110, in the case where there is an obstruction in the shadow analysis area, the area parameters of the shadow analysis area are acquired, and the obstruction parameters of the obstruction are acquired. The shadow analysis area is an area where shadow analysis is required to install the photovoltaic panel. The shelter comprises: at least one of parapet and an obstacle.
Wherein the area parameters of the shadow analysis area include: at least one of a location and an area orientation of the shadow analysis area. The region orientation includes: any one of the north-south direction, the south-east direction, the south-west direction.
The shelter parameters of the shelter include: and in the case that the shielding object is a parapet, the parapet is high and long. In the case where the obstruction is an obstacle, the length and height of the obstacle. The length comprises: the length in the east-west direction and the length in the north-south direction. The parapet wall is characterized in that the number of parapets is more than one, and the length of the barrier is more than one.
Specifically, shadow analysis zone data is collected. Shadow analysis zone data comprising: the location, the area azimuth, parapet height, length, barrier height, length. The orientation of the shadow analysis zone, comprising: north-south, south-east, south-west. Parapet height, length, barrier height, length, including: if the roof is a roof, collecting the height and the length of each face of the parapet of the roof, and the height, the east-west length and the north-south length of the highest point of the roof barrier relative to the roof. If the obstacle is in other types of areas, the height, the east-west length and the north-south length of the obstacle in the area are collected.
At step S120, a shadow area of the obstruction is determined according to the region parameter and the obstruction parameter.
In some embodiments, the specific process of determining the shadow area of the obstruction in step S120 according to the region parameter and the obstruction parameter is described in the following exemplary description.
The following is a schematic flow chart of an embodiment of determining the shadow area of the obstruction in the method of the present invention in connection with fig. 2, which further describes a specific process of determining the shadow area of the obstruction in step S120, including: step S210 to step S250.
Step S210, determining the longitude and latitude of the shadow analysis area according to the location of the shadow analysis area in the area parameter. Specifically, the local longitude and latitude are called out according to the location of the shadow analysis area.
And step S220, determining the declination angle of the shadow analysis area according to the current days. The current number of days, i.e., the number of days since the primordial denier.
Specifically, the declination angle δ, n represents the date number in one year, i.e., the number of days from the primordial denier (e.g., n=1 at 1 month and 1 day), calculated according to the formula (1) and the formula (2):
and step S230, determining the solar zenith angle and the solar azimuth angle according to the declination angle of the shadow analysis area and the setting time of the photovoltaic panel.
Specifically, the solar zenith angle θ is calculated according to the formula (3), the formula (4) and the formula (5) z Omega is the time angle, and omega is the time angle,
representing local latitude:
ω＝15°(t-12) (3)。
calculating the sun azimuth angle gamma according to the formula (6) s ：
Where t represents a time within a period of 9:00-15:00, and t may be selected from 9 points and 15 points.
Step S240, determining a shadow parameter of the obstruction according to the solar zenith angle and the solar azimuth angle and in combination with the obstruction parameter of the obstruction.
Specifically, the shadow length generated in each direction is calculated according to the height of each face of the parapet, the height of the highest point of the obstacle relative to the roof or the height of the obstacle, the east-west length and the north-south length.
In some embodiments, determining the shadow parameter of the shade in step S240 according to the solar zenith angle and the solar azimuth angle in combination with the shade parameter of the shade includes any one of the following determination cases:
first determination case: and under the condition that the shielding object is a parapet and the direction of the shadow analysis area is positive north and positive south, the shadow length of the parapet is the absolute value of the product of the length of the parapet, the tangent value of the solar zenith angle and the sine value or the cosine value of the solar azimuth angle.
Specifically, when the shadow analysis region is oriented to be positive north-south:
south parapet shadow length D 1 ：D 1 ＝|H 1 *tan(θ z )*cos(γ s )|。
Shadow length D of east parapet wall 2 ：D 2 ＝|H 2 *tan(θ z )*sin(γ s )|。
West parapet shadow length D 3 ：D 3 ＝|H 3 *tan(θ z )*sin(γ s ) | a. The invention relates to a method for producing a fibre-reinforced plastic composite. Wherein H is 1 、H 2 、H 3 The heights of the parapet are respectively the height of the south, east and west parapet.
Second determination case: and when the shielding object is a parapet and the shadow analysis area is oriented in the south east or the south west direction, the shadow length of the parapet is the absolute value of the product of the length of the parapet, the tangent value of the solar zenith angle and the sine value or the cosine value of the azimuth difference or the azimuth sum of the solar azimuth angle and the area azimuth.
Specifically, when the shadow analysis region is oriented south-east:
south parapet shadow length: d (D) 1 ＝|H 1 *tanθ z *cos(|γ s |-|γ 1 |)|。
Shadow length of parapet: d (D) 2 ＝|H 2 *tanθ z *sin(|γ s |-|γ 1 |)|。
West parapet shadow length: d (D) 3 ＝|H 3 *tanθ z *sin(|γ s |+|γ 1 |)|。
When the shadow analysis region is oriented south-west:
south parapet shadow length: d (D) 1 ＝|H 1 *tanθ z *cos(|γ s |-|γ 1 |)|。
Shadow length of parapet: d (D) 2 ＝|H 2 *tanθ z *sin(|γ s |+|γ 1 |)|。
West parapet shadow length: d (D) 3 ＝|H 3 *tanθ z *sin(|γ s |-|γ 1 |)|。
Wherein, gamma 1 Indicating that the shadow analysis region is oriented with a bias toward the region azimuth as in the case of the southward and southward.
Third determination case: when the obstruction is an obstacle and the shadow analysis area is oriented in the forward north, the forward south, the forward east, the forward west, or the forward west direction, the shadow length of the obstacle is the absolute value of the product of the length of the obstacle, the tangent value of the solar zenith angle, and the sine value or the cosine value of the solar azimuth angle. The length of the obstacle is the distance between the roof where the shadow analysis area is located and the highest point of the obstacle.
Specifically, when the shadow analysis area faces south-east or south-west, the shadow length calculation formula generated by other obstacles on the roof or other types of regional obstacles is the same as when the shadow analysis area faces north-south. Shadow length created by roof other obstructions or other types of regional obstructions:
North shadow length D 4 ：D 4 ＝|Htanθ z cosγ s |。
East shadow length D 5 ：D 5 ＝|Htanθ z sinγ s |。
Length D of western shade 6 ：D 6 ＝|Htanθ z sinγ s | a. The invention relates to a method for producing a fibre-reinforced plastic composite. Wherein H is the height of the highest point of the obstacle relative to the roof.
Therefore, the shadow area in each direction is automatically calculated by inputting the height length (if any) of the parapet wall and the height length (if any) of the obstacle or is made into a small program or software by inputting the height length (if any) of the parapet wall and the height length (if any) of the obstacle into the EXCEL (i.e. a piece of electronic form software) table, so that shadow calculation is not needed to be performed every time modeling.
Step S250, determining the product of the shadow parameter of the obstruction and the corresponding parameter in the obstruction parameters as the shadow area of the obstruction.
Specifically, the shadow area generated at each time point (i.e., t represents) can be calculated according to the calculated shadow length, the length of parapet wall at each direction, the length of the barrier in the north-south direction and the length in the east-west direction. For example: the product of the shadow length of the obstacle and the physical length or height of the obstacle is taken as the shadow area. Wherein, each time point, namely, the time t in the period of 9:00-15:00, t can be selected from 9 points and 15 points. When parapet walls are arranged in a certain direction or parapet walls with different heights are arranged in a certain direction, multiple groups of calculation can be added according to actual conditions, and the same is true for other barriers of a roof or other types of regional barriers.
At step S130, an effective area of the shadow analysis area is determined according to the shadow area of the obstruction, i.e., an area difference between the measured area of the shadow analysis area and the shadow area is used as the effective area of the shadow analysis area.
At step S140, the number of photovoltaic panels that can be installed in the shadow analysis zone is determined from the effective area of the shadow analysis zone and the photovoltaic area of each photovoltaic panel in the photovoltaic power generation system. Specifically, under the condition that the parapet wall and the obstacle are arranged on the roof, the actual effective area of each time point can be obtained by subtracting the shadow area generated by each time point according to the total area of the roof which is measured at the beginning, meanwhile, the calculated length is marked on a building drawing, and the drawing of the actual mountable photovoltaic board is drawn.
Therefore, the shadow calculation of the photovoltaic power generation system is realized by collecting the height and the length of the obstacle in the shadow calculation area to be carried out and combining the shadow generated by the obstacle at each time point by calculating the place where the project is located and the type of the obstacle to obtain the area and drawing parameters of the practical paved photovoltaic panel, and analyzing the shadow length generated by the surrounding obstacle without manual modeling, so that time and labor are saved.
In some embodiments, further comprising: a process of determining whether the shadow analysis area has an occlusion.
The following is a schematic flow chart of an embodiment of determining whether a shadow analysis area has an occlusion in the method of the present invention in connection with fig. 3, and further describes a specific process for determining whether a shadow analysis area has an occlusion, which includes: step S310 to step S330.
Step S310, before obtaining the area parameters of the shadow analysis area, determining the measurement area of the shadow analysis area, and determining whether the shadow analysis area has a shielding object.
Wherein determining the measurement area of the shadow analysis region comprises: the total area of the roof to be measured is measured by Auto or other drawing building base map software, the area of the area is calculated and the data is transmitted to the photovoltaic power generation system.
Step S320, if the shadow analysis area has the occlusion object, acquiring an area parameter of the shadow analysis area and an occlusion object parameter of the occlusion object, and determining a shadow area of the occlusion object according to the area parameter and the occlusion object parameter. Further, an effective area of the shadow analysis area is determined according to the shadow area of the shielding object, namely, an area difference between a measurement area of the shadow analysis area and the shadow area is used as the effective area of the shadow analysis area.
Step S330, if the shadow analysis area has no shielding object, using the measured area of the shadow analysis area as the effective area of the shadow analysis area. Further, the number of photovoltaic panels that can be installed in the shadow analysis zone is determined based on the effective area of the shadow analysis zone and the photovoltaic area of each photovoltaic panel in the photovoltaic power generation system.
Specifically, in the case of a roof without parapet and obstructions, the actual effective area at each time point is the total area of the roof measured initially.
Through a large number of experimental verification, by adopting the technical scheme of the embodiment, the shadow calculation of the photovoltaic power generation system is realized by collecting the height and the length of the obstacle in the area where the shadow calculation is required and combining the shadow generated by the obstacle at each time point calculated by the place where the project is located and the obstacle type, so as to obtain the area and drawing parameters of the practical paved photovoltaic panel, and analyzing the shadow length generated by the surrounding obstacle without manual modeling, thereby saving time and labor.
According to an embodiment of the present invention, there is also provided a photovoltaic area determination apparatus of a photovoltaic power generation system corresponding to the photovoltaic area determination method of a photovoltaic power generation system. Referring to fig. 4, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The photovoltaic area determination apparatus of the photovoltaic power generation system may include: an acquisition unit 102 and a determination unit 104.
Wherein, the obtaining unit 102 is configured to obtain the area parameter of the shadow analysis area and obtain the shelter parameter of the shelter when the shadow analysis area has the shelter. The shadow analysis area is an area where shadow analysis is required to install the photovoltaic panel. The shelter comprises: at least one of parapet and an obstacle. The specific function and process of the acquisition unit 102 refer to step S110.
Wherein the area parameters of the shadow analysis area include: at least one of a location and an area orientation of the shadow analysis area. The region orientation includes: any one of the north-south direction, the south-east direction, the south-west direction.
The shelter parameters of the shelter include: and in the case that the shielding object is a parapet, the parapet is high and long. In the case where the obstruction is an obstacle, the length and height of the obstacle. The length comprises: the length in the east-west direction and the length in the north-south direction. The parapet wall is characterized in that the number of parapets is more than one, and the length of the barrier is more than one.
Specifically, shadow analysis zone data is collected. Shadow analysis zone data comprising: the location, the area azimuth, parapet height, length, barrier height, length. The orientation of the shadow analysis zone, comprising: north-south, south-east, south-west. Parapet height, length, barrier height, length, including: if the roof is a roof, collecting the height and the length of each face of the parapet of the roof, and the height, the east-west length and the north-south length of the highest point of the roof barrier relative to the roof. If the obstacle is in other types of areas, the height, the east-west length and the north-south length of the obstacle in the area are collected.
A determining unit 104 configured to determine a shadow area of the occlusion object based on the region parameter and the occlusion object parameter. The specific function and processing of the determination unit 104 are described in step S120.
In some embodiments, the determining unit 104 determines a shadow area of the obstruction according to the area parameter and the obstruction parameter, including:
the determining unit 104 is specifically further configured to determine the longitude and latitude of the shadow analysis area according to the location of the shadow analysis area in the area parameter. The specific function and processing of the determination unit 104 is also referred to in step S210. Specifically, the local longitude and latitude are called out according to the location of the shadow analysis area.
The determining unit 104 is specifically further configured to determine the declination angle of the shadow analysis area according to the current day. The specific function and processing of the determination unit 104 is also referred to step S220. The current number of days, i.e., the number of days since the primordial denier.
Specifically, the declination angle δ, n represents the date number in one year, i.e., the number of days from the primordial denier (e.g., n=1 at 1 month and 1 day), calculated according to the formula (1) and the formula (2):
the determining unit 104 is specifically further configured to determine a solar zenith angle and a solar azimuth angle according to the declination angle of the shadow analysis area and the setting time of the photovoltaic panel. The specific function and processing of the determination unit 104 is also referred to step S230.
Specifically, the solar zenith angle θ is calculated according to the formula (3), the formula (4) and the formula (5) z Omega is the time angle, and omega is the time angle,
representing local latitude:
ω＝15°(t-12) (3)。
calculating the sun azimuth angle gamma according to the formula (6) s ：
Where t represents a time within a period of 9:00-15:00, and t may be selected from 9 points and 15 points.
The determining unit 104 is specifically further configured to determine a shadow parameter of the obstruction according to the solar zenith angle and the solar azimuth angle in combination with an obstruction parameter of the obstruction. The specific function and processing of the determination unit 104 is also referred to step S240.
Specifically, the shadow length generated in each direction is calculated according to the height of each face of the parapet, the height of the highest point of the obstacle relative to the roof or the height of the obstacle, the east-west length and the north-south length.
In some embodiments, the determining unit 104 determines, according to the solar zenith angle and the solar azimuth angle, a shadow parameter of the shade in combination with a shade parameter of the shade, including any one of the following determination cases:
first determination case: the determining unit 104 is specifically further configured to, when the obstruction is a parapet wall and the shadow analysis area is oriented in the positive north-south direction, determine the shadow length of the parapet wall as an absolute value of a product of the length of the parapet wall, the tangent value of the solar zenith angle, and the sine value or the cosine value of the solar azimuth angle.
Specifically, when the shadow analysis region is oriented to be positive north-south:
south parapet shadow length D 1 ：D 1 ＝|H 1 *tan(θ z )*cos(γ s )|。
Shadow length D of east parapet wall 2 ：D 2 ＝|H 2 *tan(θ z )*sin(γ s )|。
West parapet shadow length D 3 ：D 3 ＝|H 3 *tan(θ z )*sin(γ s ) | a. The invention relates to a method for producing a fibre-reinforced plastic composite. Wherein H is 1 、H 2 、H 3 The heights of the parapet are respectively the height of the south, east and west parapet.
Second determination case: the determining unit 104 is specifically further configured to, when the obstruction is a parapet wall and the shadow analysis area is oriented in the south-east direction or the south-west direction, determine an absolute value of a product of a length of the parapet wall, a tangent value of the solar zenith angle, and a sine value or a cosine value of a sum of an azimuth difference or an azimuth of the solar azimuth angle and the area azimuth, where the shadow length of the parapet wall is the length of the parapet wall.
Specifically, when the shadow analysis region is oriented south-east:
south parapet shadow length: d (D) 1 ＝|H 1 *tanθ z *cos(|γ s |-|γ 1 |)|。
Shadow length of parapet: d (D) 2 ＝|H 2 *tanθ z *sin(|γ s |-|γ 1 |)|。
West parapet shadow length: d (D) 3 ＝|H 3 *tanθ z *sin(|γ s |+|γ 1 |)|。
When the shadow analysis region is oriented south-west:
south parapet shadow length: d (D) 1 ＝|H 1 *tanθ z *cos(|γ s |-|γ 1 |)|。
Shadow length of parapet: d (D) 2 ＝|H 2 *tanθ z *sin(|γ s |+|γ 1 |)|。
West parapet shadow length: d (D) 3 ＝|H 3 *tanθ z *sin(|γ s |-|γ 1 |)|。
Wherein, gamma 1 Indicating that the shadow analysis region is oriented with a bias toward the region azimuth as in the case of the southward and southward.
Third determination case: the determining unit 104 is specifically further configured to, when the obstruction is an obstacle and the direction of the shadow analysis area is positive north-south or south-east or south-west, determine the shadow length of the obstacle as an absolute value of a product of the length of the obstacle, the tangent value of the solar zenith angle, and the sine value or the cosine value of the solar azimuth angle. The length of the obstacle is the distance between the roof where the shadow analysis area is located and the highest point of the obstacle.
Specifically, when the shadow analysis area faces south-east or south-west, the shadow length calculation formula generated by other obstacles on the roof or other types of regional obstacles is the same as when the shadow analysis area faces north-south. Shadow length created by roof other obstructions or other types of regional obstructions:
north shadow length D 4 ：D 4 ＝|Htanθ z cosγ s |。
East shadow length D 5 ：D 5 ＝|Htanθ z sinγ s |。
Length D of western shade 6 ：D 6 ＝|Htanθ z sinγ s | a. The invention relates to a method for producing a fibre-reinforced plastic composite. Wherein H is the height of the highest point of the obstacle relative to the roof.
Therefore, the shadow area in each direction is automatically calculated by inputting the height length (if any) of the parapet wall and the height length (if any) of the obstacle or is made into a small program or software by inputting the height length (if any) of the parapet wall and the height length (if any) of the obstacle into the EXCEL (i.e. a piece of electronic form software) table, so that shadow calculation is not needed to be performed every time modeling.
The determining unit 104 is specifically further configured to determine a product of a shadow parameter of the obstruction and a corresponding parameter of the obstruction parameters as a shadow area of the obstruction. The specific function and processing of the determination unit 104 is also referred to step S250.
Specifically, the shadow area generated at each time point (i.e., t represents) can be calculated according to the calculated shadow length, the length of parapet wall at each direction, the length of the barrier in the north-south direction and the length in the east-west direction. For example: the product of the shadow length of the obstacle and the physical length or height of the obstacle is taken as the shadow area. Wherein, each time point, namely, the time t in the period of 9:00-15:00, t can be selected from 9 points and 15 points. When parapet walls are arranged in a certain direction or parapet walls with different heights are arranged in a certain direction, multiple groups of calculation can be added according to actual conditions, and the same is true for other barriers of a roof or other types of regional barriers.
The determining unit 104 is further configured to determine an effective area of the shadow analysis area according to a shadow area of the obstruction, i.e. an area difference between a measured area of the shadow analysis area and the shadow area, as the effective area of the shadow analysis area. The specific function and processing of the determination unit 104 is also referred to step S130.
The determining unit 104 is further configured to determine the number of photovoltaic panels that can be installed in the shadow analysis area according to the effective area of the shadow analysis area and the photovoltaic area of each photovoltaic panel in the photovoltaic power generation system. The specific function and processing of the determination unit 104 is also referred to step S140. Specifically, under the condition that the parapet wall and the obstacle are arranged on the roof, the actual effective area of each time point can be obtained by subtracting the shadow area generated by each time point according to the total area of the roof which is measured at the beginning, meanwhile, the calculated length is marked on a building drawing, and the drawing of the actual mountable photovoltaic board is drawn.
Therefore, the shadow calculation of the photovoltaic power generation system is realized by collecting the height and the length of the obstacle in the shadow calculation area to be carried out and combining the shadow generated by the obstacle at each time point by calculating the place where the project is located and the type of the obstacle to obtain the area and drawing parameters of the practical paved photovoltaic panel, and analyzing the shadow length generated by the surrounding obstacle without manual modeling, so that time and labor are saved.
In some embodiments, further comprising: the process of determining whether a shadow analysis area has an occlusion is as follows:
the determining unit 104 is further configured to determine a measurement area of the shadow analysis area and determine whether the shadow analysis area has a shadow object before acquiring the area parameter of the shadow analysis area. The specific function and processing of the determination unit 104 is also referred to step S310.
Wherein determining the measurement area of the shadow analysis region comprises: the total area of the roof to be measured is measured by Auto or other drawing building base map software, the area of the area is calculated and the data is transmitted to the photovoltaic power generation system.
The determining unit 104 is further configured to obtain an area parameter of the shadow analysis area and a shutter parameter of the shutter if the shadow analysis area has the shutter, and determine a shadow area of the shutter according to the area parameter and the shutter parameter. Further, an effective area of the shadow analysis area is determined according to the shadow area of the shielding object, namely, an area difference between a measurement area of the shadow analysis area and the shadow area is used as the effective area of the shadow analysis area. The specific function and processing of the determination unit 104 is also referred to step S320.
The determining unit 104 is further configured to take a measurement area of the shadow analysis area as an effective area of the shadow analysis area if the shadow analysis area has no obstruction. Further, the number of photovoltaic panels that can be installed in the shadow analysis zone is determined based on the effective area of the shadow analysis zone and the photovoltaic area of each photovoltaic panel in the photovoltaic power generation system. The specific function and processing of the determination unit 104 is also referred to step S330.
Specifically, in the case of a roof without parapet and obstructions, the actual effective area at each time point is the total area of the roof measured initially.
Since the processes and functions implemented by the apparatus of the present embodiment substantially correspond to the embodiments, principles and examples of the methods shown in fig. 1 to 3, the description of the present embodiment is not exhaustive, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.
Through a large number of experiments, the technical scheme of the invention is adopted, the shadow calculation can be carried out by collecting the height and the length of the obstacle in the area needing shadow calculation and combining the shadow generated by the obstacle at each time point by calculating the place where the project is located and the obstacle type, so that the area and drawing parameters of the practical paved photovoltaic panel are obtained, no professional technician or technical method is needed, and the zero technical threshold of the operator can be realized.
According to an embodiment of the present invention, there is also provided a photovoltaic power generation system corresponding to the photovoltaic area determination apparatus of the photovoltaic power generation system. The photovoltaic power generation system may include: the photovoltaic area determining device of the photovoltaic power generation system described above.
The design specification of the photovoltaic power station provides that the photovoltaic panel is free from shadow shielding in the period of 9:00-15:00 a year, so that shadow parts are avoided as much as possible when the photovoltaic module is paved. The shadow calculation process is complex, the professionality is strong, the condition of each project is different, and each time, professional personnel are required to carry out modeling analysis, so that time and labor are consumed.
In a related scenario, modeling analysis was performed using Google (i.e., google) SketchUp (i.e., sketch master) software. FIG. 5 is a schematic diagram of an embodiment of a parapet shadow area. As shown in FIG. 5, the shadow area of the parapet on each surface is calculated, a model is created for the length and the height of the parapet in Google SketchUp software, and then the shadow length is calculated according to different time, namely the length D in FIG. 5 1 And length D 2 The area of each shadow area is then calculated based on the length. Here, the model obtained by modeling may be a roof, or may be another space, or if there is an obstacle around or in the middle of the space, the obstacle size may be modeled in Google SketchUp software, and the shadow generated by the shadow is produced.
Parapet walls are the surrounding barriers around the roof, and not all roofs are provided. Sketchup is a set of design tools directly facing the design scheme creation process, and the creation process not only can fully express the ideas of designers, but also completely meets the requirement of instant communication with clients, so that the designers can directly perform quite visual conception on a computer, and the Sketchup is a tool for three-dimensional building design scheme creation.
In some embodiments, the invention provides a shadow calculation method, in particular to a method for calculating the area of a paved photovoltaic module through shadow analysis, which is applied to shadow analysis and calculation of a photovoltaic power generation system, does not need professional technicians and technical methods, and can realize the shadow calculation of operators with zero technical threshold.
Specifically, the scheme of the invention provides a shadow calculating method, wherein the shadow generated by the obstacle at each time point is calculated by collecting the height and the length of the obstacle in the area where the shadow calculating is required and combining the place where the project is located and the type of the obstacle, so that the area where the photovoltaic panel can be actually paved and related drawings are obtained.
As can be seen from the CAD building bottom drawing, fig. 7 is a plan view of a roof, the outermost perimeter represents the outline of the roof, and the rectangular blocks are laid photovoltaic panels, and mark how many blocks can be laid; the right side is provided with a cross rectangle, is like a ventilation shaft or other wells, cannot lay a photovoltaic panel, sometimes a machine room is arranged on a roof, and the like, and can be seen from the drawing. A class of obstacles comprising: ventilation shaft, computer lab, electricity room, glass room etc..
FIG. 6 is a flow chart of an embodiment of a method for calculating a paved photovoltaic module area by shadow analysis. As shown in fig. 6, the process of the method for calculating the area of the paved photovoltaic module through shadow analysis comprises the following steps:
and 1, collecting shadow analysis area data.
Wherein the shadow analysis zone data comprises: the location, the area azimuth (can be measured or obtained according to the display condition of the drawing), the parapet height, the parapet length, the barrier height and the barrier length. The orientation of the shadow analysis zone, comprising: north-south, south-east, south-west. Parapet height, length, barrier height, length, including: if the roof is a roof, collecting the height and the length of each face of the parapet of the roof, and the height, the east-west length and the north-south length of the highest point of the roof barrier relative to the roof; if the obstacle is in other types of areas, the height, the east-west length and the north-south length of the obstacle in the area are collected.
Specifically, the local longitude and latitude are called out according to the location of the shadow analysis area. For example: the shadow analysis area is located in Beijing, and the longitude and latitude of Beijing are called. And (5) calling the longitude and latitude of the Shanghai when the shadow analysis area is in the Shanghai.
First, the declination angle δ is calculated according to the formula (1) and the formula (2), and n represents the date number in one year, i.e., the number of days from the primordial denier (e.g., n=1 at 1 month and 1 day):
secondly, according to the formula (3), the formula (4) and the formula (5), the solar zenith angle theta is calculated z Omega is the time angle, and omega is the time angle,
representing local latitude:
ω＝15°(t-12) (3)；
calculating the sun azimuth angle gamma according to the formula (6) s ：
Where t represents a time within a period of 9:00-15:00, and t may be selected from 9 points and 15 points.
Representing the local latitude. Bs, which may be referred to as the solar angle, is an angle value.
And finally, calculating the shadow length generated in each direction according to the height of each surface of the parapet wall, the height of the highest point of the obstacle relative to the roof or the height of the obstacle, the east-west length and the north-south length.
When the shadow analysis area is oriented to be positive north-south:
south parapet shadow length D 1 ：D 1 ＝|H 1 *tan(θ z )*cos(γ s )|。
Shadow length D of east parapet wall 2 ：D 2 ＝|H 2 *tan(θ z )*sin(γ s )|。
West parapet shadow length D 3 ：D 3 ＝|H 3 *tan(θ z )*sin(γ s )|。
Wherein H is 1 、H 2 、H 3 The heights of the parapet are respectively the height of the south, east and west parapet.
Shadow length created by roof other obstructions or other types of regional obstructions:
north shadow length D 4 ：D 4 ＝|Htanθ z cosγ s |。
East shadow length D 5 ：D 5 ＝|Htanθ z sinγ s |。
Length D of western shade 6 ：D 6 ＝|Htanθ z sinγ s |。
Wherein H is the height of the highest point of the obstacle relative to the roof.
When the shadow analysis region is oriented south-east:
south parapet shadow length: d (D) 1 ＝|H 1 *tanθ z *cos(|γ s |-|γ 1 |)|。
Shadow length of parapet: d (D) 2 ＝|H 2 *tanθ z *sin(|γ s |-|γ 1 |)|。
West parapet shadow length: d (D) 3 ＝|H 3 *tanθ z *sin(|γ s |+|γ 1 |)|。
When the shadow analysis region is oriented south-west:
south girlWall shadow length: d (D) 1 ＝|H 1 *tanθ z *cos(|γ s |-|γ 1 |)|。
Shadow length of parapet: d (D) 2 ＝|H 2 *tanθ z *sin(|γ s |+|γ 1 |)|。
West parapet shadow length: d (D) 3 ＝|H 3 *tanθ z *sin(|γ s |-|γ 1 |)|。
Wherein, gamma 1 Indicating that the shadow analysis region is oriented with a bias toward the region azimuth as in the case of the southward and southward.
When the shadow analysis area faces south east or south west, the shadow length calculation formula generated by other barriers on the roof or other types of regional barriers is the same as when the shadow analysis area faces north south or south north.
And 2, judging whether the parapet wall is a plurality of groups of barriers. If yes, a plurality of groups are added, shadow calculation is carried out, and a calculation result is output; otherwise, directly performing shadow calculation and outputting a calculation result.
Specifically, the shadow area generated at each time point (i.e., t represents) can be calculated according to the calculated shadow length, the length of parapet wall at each direction, the length of the barrier in the north-south direction and the length in the east-west direction. For example: the product of the shadow length of the obstacle and the physical length or height of the obstacle is taken as the shadow area. Wherein, each time point, namely, the time t in the period of 9:00-15:00, t can be selected from 9 points and 15 points.
Taking parapet as an example, supposing parapet with lengths of L respectively on three sides of south, east and west 1 、L 2 、L 3 These lengths are obtained from a construction drawing (such as the construction drawing shown in FIG. 7), and the shadow lengths D of the south, east and west are calculated according to the formula 1 、D 2 、D 3 Area S generated by parapet wall in south, east and west 1 、S 2 、S 3 The method comprises the following steps of:
S 1 ＝L 1 *D 1 ；
S 2 ＝L 2 *D 2 ；
S 3 ＝L 3 *D 3 ；
total shadow area = S produced by parapet wall 1 +S 2 +S 3 。
Calculating the shadow area of the obstacle:
collecting or considering the length L of the input barrier in the north-south direction from the drawing 4 Length L in east-west direction 5 Calculating the shadow lengths D of the north, east and west of the obstacle according to a formula 4 、D 5 、D 6 。
Area S generated by North, east and west obstacles 4 、S 5 、S 6 The method comprises the following steps of:
S 4 ＝L 5 *D 4 ；
S 5 ＝L 4 *D 5 ；
S 6 ＝L 4 *D 6 ；
area S of obstacle itself 7 ＝L 4 *L 5 ；
Total area of shadows generated by obstacles = s4+s5+s6+s7.
When parapet walls are arranged in a certain direction or parapet walls with different heights are arranged in a certain direction, multiple groups of calculation can be added according to actual conditions, and the same is true for other barriers of a roof or other types of regional barriers.
And subtracting the shadow areas generated by each time point according to the total roof area measured at the beginning to obtain the actual effective area of each time point, marking the calculated length on a building drawing, and drawing the drawing of the actual mountable photovoltaic panel. Of course, in the case of a roof without parapet and obstructions, the actual effective area at each time point is the total roof area measured initially.
The total roof area measured initially may be: the area of the area to be shadow analyzed is measured by Auto CAD (Autodesk Computer Aided Design, automated computer aided design software) or other drawing building base map software, and the area is calculated and the data is transmitted to the photovoltaic power generation system.
In the scheme of the invention, the formula can be imported into an EXCEL (electronic form software) form, the shadow area in each direction can be automatically calculated by inputting the height length (if any) of the parapet wall and the height length (if any) of the barrier, or a small program or software can be made, the shadow area in each direction can be automatically calculated by inputting the height length (if any) of the parapet wall and the height length (if any) of the barrier, and thus the shadow calculation is not needed to be performed by modeling each time.
Since the processing and functions implemented by the photovoltaic power generation system of this embodiment basically correspond to the embodiments, principles and examples of the apparatus shown in fig. 4, the description of this embodiment is not exhaustive, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.
Through a large number of experiments, the technical scheme of the invention is adopted, the height and the length of the obstacle in the area needing to be calculated by the shadow are collected, the shadow generated by the obstacle at each time point is calculated by combining the place where the project is located and the obstacle type, so that the area and drawing parameters of the practical paved photovoltaic panel are obtained, and the manual labor amount can be saved.
According to an embodiment of the present invention, there is also provided a storage medium corresponding to a photovoltaic area determination method of a photovoltaic power generation system, the storage medium including a stored program, wherein the device in which the storage medium is controlled to execute the above-described photovoltaic area determination method of the photovoltaic power generation system when the program runs.
Since the processes and functions implemented by the storage medium of the present embodiment substantially correspond to the embodiments, principles and examples of the methods shown in fig. 1 to 3, the description of the present embodiment is not exhaustive, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.
Through a large number of experiments, the technical scheme of the invention is adopted, the shadow calculation efficiency of the photovoltaic power generation system can be improved by collecting the height and the length of the obstacle in the area where the shadow calculation is required and combining the shadow generated by the obstacle at each time point calculated by the place where the project is located and the obstacle type, so that the area and drawing parameters of the photovoltaic panel can be paved practically.
According to an embodiment of the present invention, there is also provided a processor corresponding to the photovoltaic area determination method of a photovoltaic power generation system, the processor being configured to execute a program, wherein the program executes the photovoltaic area determination method of a photovoltaic power generation system described above when running.
Since the processes and functions implemented by the processor of the present embodiment substantially correspond to the embodiments, principles and examples of the methods shown in fig. 1 to 3, the description of the present embodiment is not exhaustive, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.
Through a large number of experiments, the technical scheme of the invention is adopted, the height and the length of the obstacle in the area needing to be calculated by the shadow are collected, the shadow generated by the obstacle at each time point is calculated by combining the place where the project is located and the obstacle type, so that the area and drawing parameters of the practical paved photovoltaic panel are obtained, the manual labor amount can be reduced, and the calculation efficiency is improved.
In summary, it is readily understood by those skilled in the art that the above-described advantageous ways can be freely combined and superimposed without conflict.
The above description is only an example of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (7)
1. A photovoltaic area determination method of a photovoltaic power generation system, comprising:
under the condition that a shadow analysis area is provided with a shielding object, acquiring area parameters of the shadow analysis area, and acquiring shielding object parameters of the shielding object; the shadow analysis area is an area which needs shadow analysis to be used for installing the photovoltaic panel; the shelter comprises: at least one of parapet and an obstacle; wherein the area parameters of the shadow analysis area include: at least one of a location and a region orientation of the shadow analysis region; the region orientation includes: any azimuth of north-south, south-east, south-west; the shelter parameters of the shelter include: in the case that the shielding object is a parapet, the parapet is high and long; in the case that the obstruction is an obstacle, the length and height of the obstacle; the length comprises: any one of east-west length and north-south length; the number of parapet walls is more than one, and the length of the barrier is more than one;
determining a shadow area of the shade according to the region parameter and the shade parameter; determining a shadow area of the obstruction according to the region parameter and the obstruction parameter, including: determining the longitude and latitude of the shadow analysis area according to the location of the shadow analysis area in the area parameter; determining the declination angle of the shadow analysis area according to the current days; determining a solar zenith angle and a solar azimuth angle according to the declination angle of the shadow analysis area and the setting time of the photovoltaic panel; determining shadow parameters of the shade according to the solar zenith angle and the solar azimuth angle and combining the shade parameters of the shade; determining the product of the shadow parameters of the shade and the corresponding parameters in the shade parameters as the shadow area of the shade; wherein, according to the solar zenith angle and the solar azimuth angle, combining the shelter parameter of the shelter, determining the shadow parameter of the shelter comprises: when the shielding object is a parapet and the direction of the shadow analysis area is positive north and south, the shadow length of the parapet is the absolute value of the product of the length of the parapet, the tangent value of the solar zenith angle and the sine value or the cosine value of the solar azimuth angle; when the shielding object is a parapet and the shadow analysis area is oriented in the south east or the south west direction, the shadow length of the parapet is the absolute value of the product of the length of the parapet, the tangent value of the solar zenith angle and the sine value or the cosine value of the azimuth difference or the azimuth sum of the solar azimuth angle and the area azimuth; when the shielding object is an obstacle and the direction of the shadow analysis area is positive north-positive or south-east or south-west, the shadow length of the obstacle is the absolute value of the product of the length of the obstacle, the tangent value of the solar zenith angle and the sine value or the cosine value of the solar azimuth angle; the length of the obstacle is the distance between the roof where the shadow analysis area is located and the highest point of the obstacle;
Taking the area difference between the measured area of the shadow analysis area and the shadow area as the effective area of the shadow analysis area;
determining the number of photovoltaic panels that can be installed in the shadow analysis zone according to the effective area of the shadow analysis zone and the photovoltaic area of each photovoltaic panel in the photovoltaic power generation system;
the shadow generated by the obstacle at each time point is calculated by collecting the height and the length of the obstacle in the shadow calculation region and combining the place where the project is located and the type of the obstacle, so that the area and drawing parameters of the practical paved photovoltaic panel are obtained.
2. The method for determining a photovoltaic area of a photovoltaic power generation system according to claim 1, further comprising:
determining whether the shadow analysis area has a shielding object;
if the shadow analysis area has the shielding object, acquiring the area parameter of the shadow analysis area and the shielding object parameter of the shielding object, and determining the shadow area of the shielding object according to the area parameter and the shielding object parameter;
and if the shadow analysis area does not have the shielding object, taking the measurement area of the shadow analysis area as the effective area of the shadow analysis area.
3. A photovoltaic area determination apparatus of a photovoltaic power generation system, comprising:
an acquisition unit configured to acquire, in a case where a shadow analysis area has a shutter, an area parameter of the shadow analysis area, and acquire a shutter parameter of the shutter; the shadow analysis area is an area which needs shadow analysis to be used for installing the photovoltaic panel; the shelter comprises: at least one of parapet and an obstacle; wherein the area parameters of the shadow analysis area include: at least one of a location and a region orientation of the shadow analysis region; the region orientation includes: any azimuth of north-south, south-east, south-west; the shelter parameters of the shelter include: in the case that the shielding object is a parapet, the parapet is high and long; in the case that the obstruction is an obstacle, the length and height of the obstacle; the length comprises: any one of east-west length and north-south length; the number of parapet walls is more than one, and the length of the barrier is more than one;
a determining unit configured to determine a shadow area of the obstruction according to the region parameter and the obstruction parameter; the determining unit determines a shadow area of the obstruction according to the region parameter and the obstruction parameter, and includes: determining the longitude and latitude of the shadow analysis area according to the location of the shadow analysis area in the area parameter; determining the declination angle of the shadow analysis area according to the current days; determining a solar zenith angle and a solar azimuth angle according to the declination angle of the shadow analysis area and the setting time of the photovoltaic panel; determining shadow parameters of the shade according to the solar zenith angle and the solar azimuth angle and combining the shade parameters of the shade; determining the product of the shadow parameters of the shade and the corresponding parameters in the shade parameters as the shadow area of the shade; the determining unit, according to the solar zenith angle and the solar azimuth angle, combines the shade parameter of the shade, determines the shadow parameter of the shade, and includes: when the shielding object is a parapet and the direction of the shadow analysis area is positive north and south, the shadow length of the parapet is the absolute value of the product of the length of the parapet, the tangent value of the solar zenith angle and the sine value or the cosine value of the solar azimuth angle; when the shielding object is a parapet and the shadow analysis area is oriented in the south east or the south west direction, the shadow length of the parapet is the absolute value of the product of the length of the parapet, the tangent value of the solar zenith angle and the sine value or the cosine value of the azimuth difference or the azimuth sum of the solar azimuth angle and the area azimuth; when the shielding object is an obstacle and the direction of the shadow analysis area is positive north-positive or south-east or south-west, the shadow length of the obstacle is the absolute value of the product of the length of the obstacle, the tangent value of the solar zenith angle and the sine value or the cosine value of the solar azimuth angle; the length of the obstacle is the distance between the roof where the shadow analysis area is located and the highest point of the obstacle;
The determination unit is further configured to determine an area difference between the measured area of the shadow analysis area and the shadow area as an effective area of the shadow analysis area;
the determining unit is further configured to determine the number of the photovoltaic panels that can be installed in the shadow analysis area according to the effective area of the shadow analysis area and the photovoltaic area of each photovoltaic panel in the photovoltaic power generation system;
the shadow generated by the obstacle at each time point is calculated by collecting the height and the length of the obstacle in the shadow calculation region and combining the place where the project is located and the type of the obstacle, so that the area and drawing parameters of the practical paved photovoltaic panel are obtained.
4. A photovoltaic area determining apparatus of a photovoltaic power generation system according to claim 3, further comprising:
the determining unit is further configured to determine whether the shadow analysis area has a shielding object;
the determining unit is further configured to acquire an area parameter of the shadow analysis area and a shutter parameter of the shutter if the shadow analysis area has the shutter, and determine a shadow area of the shutter according to the area parameter and the shutter parameter;
The determination unit is further configured to take a measurement area of the shadow analysis area as an effective area of the shadow analysis area if the shadow analysis area has no obstruction.
5. A photovoltaic power generation system, comprising: the photovoltaic area determination apparatus of a photovoltaic power generation system according to any one of claims 3 to 4.
6. A storage medium comprising a stored program, wherein the program, when run, controls a device in which the storage medium is located to perform the photovoltaic area determination method of the photovoltaic power generation system of any one of claims 1 to 2.
7. A processor, characterized in that the processor is configured to run a program, wherein the program when run performs the photovoltaic area determination method of the photovoltaic power generation system of any one of claims 1 to 2.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106447231A (en) * | 2016-11-01 | 2017-02-22 | 中国能源建设集团江苏省电力设计院有限公司 | Method of calculating the time without shielding of shadow for photovoltaic assembly for photovoltaic power generation project |
| CN109375650A (en) * | 2018-10-12 | 2019-02-22 | 远景能源（南京）软件技术有限公司 | Different roofing situation barrier shadow occlusion calculation methods |
| CN110288203A (en) * | 2019-05-31 | 2019-09-27 | 中国计量大学 | A kind of irradiation amount loss rate Dynamic calculation method of barrier shadow region photovoltaic array |
| CN110851945A (en) * | 2019-08-08 | 2020-02-28 | 上海电气分布式能源科技有限公司 | Photovoltaic array arrangement method and photovoltaic array arrangement scheme automatic generation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106447231A (en) * | 2016-11-01 | 2017-02-22 | 中国能源建设集团江苏省电力设计院有限公司 | Method of calculating the time without shielding of shadow for photovoltaic assembly for photovoltaic power generation project |
| CN109375650A (en) * | 2018-10-12 | 2019-02-22 | 远景能源（南京）软件技术有限公司 | Different roofing situation barrier shadow occlusion calculation methods |
| CN110288203A (en) * | 2019-05-31 | 2019-09-27 | 中国计量大学 | A kind of irradiation amount loss rate Dynamic calculation method of barrier shadow region photovoltaic array |
| CN110851945A (en) * | 2019-08-08 | 2020-02-28 | 上海电气分布式能源科技有限公司 | Photovoltaic array arrangement method and photovoltaic array arrangement scheme automatic generation system |
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