CN110233592B - Design method of photovoltaic curtain wall for realizing matching of power generation and power utilization - Google Patents
Design method of photovoltaic curtain wall for realizing matching of power generation and power utilization Download PDFInfo
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- CN110233592B CN110233592B CN201910570016.9A CN201910570016A CN110233592B CN 110233592 B CN110233592 B CN 110233592B CN 201910570016 A CN201910570016 A CN 201910570016A CN 110233592 B CN110233592 B CN 110233592B
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- 238000010248 power generation Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005611 electricity Effects 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 abstract description 23
- 230000002269 spontaneous effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/88—Curtain walls
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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
- H02S20/20—Supporting structures directly fixed to an immovable object
- H02S20/22—Supporting structures directly fixed to an immovable object specially adapted for buildings
- H02S20/26—Building materials integrated with PV modules, e.g. façade elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention relates to the technical field of photovoltaic curtain wall installation, and discloses a method for designing a photovoltaic curtain wall for realizing matching of power generation and power utilization, which comprises the following steps: determining the sum of the solar irradiation amount corresponding to each photovoltaic module at each time point, and calculating the sum of the power generation amount of each photovoltaic module at each time point according to the sum of the solar irradiation amount to form a curve A1; collecting real-time electricity sum data of users in a target building and forming a curve B1; the curve A1 and the curve B1 are placed in the same coordinate system to be compared, the curve A1 is adjusted to trend to the curve B1, and then a target power generation sum curve A2 of each photovoltaic module at each time point is obtained; and determining target power generation amounts of the photovoltaic modules with different installation inclination angles and different orientations according to the curve A2, and calculating the areas of the photovoltaic modules with different installation inclination angles and different orientations according to the power generation amounts of the photovoltaic modules in unit area. The matching of power generation and power utilization is realized to the greatest extent, the surplus of power generation is reduced, and the energy utilization rate is improved.
Description
Technical Field
The invention relates to the technical field of photovoltaic curtain wall installation, in particular to a design method of a photovoltaic curtain wall for realizing matching of power generation and power utilization.
Background
The photovoltaic system is a power generation system which directly converts solar energy into electric energy by utilizing a solar cell, and with the strong support of the country on new energy, the photovoltaic industry is rapidly developed, namely, the solar energy is converted into the electric energy for spontaneous self-use. Compared with the existing mainstream power generation mode, the working point of the photovoltaic system changes rapidly, because the photovoltaic system is greatly influenced by external environmental factors such as illumination, temperature, air quality and the like, and similarly, the electricity utilization in the building also has a peak period and a valley period, and the peak period of the electricity generation and the peak value of the electricity utilization are not matched, so that the phenomenon of surplus electricity generation can occur. At present, the method for solving the problem generally adopts a mode of 'spontaneous self-use and residual electricity on-line' or stores the residual electricity in a storage battery for standby application, namely, the 'spontaneous self-use and residual electricity on-line' is that the residual electricity is supplied to a low-voltage public network nearby, but the method needs to be connected with a national power grid, the operation is complex, and the cost of the storage battery is higher, so that the best mode is to match power generation with electricity to the greatest extent so as to reduce surplus power generated.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method for designing a photovoltaic curtain wall for matching power generation with power consumption, which determines target power generation amounts of photovoltaic modules with different installation inclination angles and orientations by collecting real-time power consumption sum data of users in a target building, thereby determining areas of the photovoltaic modules with different installation inclination angles and orientations, and further matching power generation with power consumption as much as possible, reducing surplus power generated during power generation, and improving energy utilization rate.
The invention provides a design method of a photovoltaic curtain wall for realizing matching of power generation and power utilization, which comprises the following steps:
s1: determining the sum of the solar irradiation amount corresponding to each photovoltaic module at each time point based on the position of the target building and the inclination angle and the orientation of each inclined plane of each photovoltaic module on the target building, and calculating the sum of the power generation amount of each photovoltaic module at each time point according to the sum of the solar irradiation amount to form a curve A1;
s2: collecting real-time electricity sum data of users in a target building and forming a curve B1;
s3: the curve A1 and the curve B1 are placed in the same coordinate system to be compared, the curve A1 is adjusted to trend to the curve B1, and then a target power generation sum curve A2 of each photovoltaic module at each time point is obtained;
s4: and determining target power generation amounts of the photovoltaic modules with different installation inclination angles and different orientations according to the curve A2, and calculating the areas of the photovoltaic modules with different installation inclination angles and different orientations according to the power generation amounts of the photovoltaic modules in unit area.
According to the technical scheme, the target power generation amount of the photovoltaic modules with different installation inclination angles and orientations is determined by collecting the real-time power utilization sum data of the users in the target building, so that the areas of the photovoltaic modules with different installation inclination angles and orientations are determined, then the power generation and the power utilization are matched as much as possible, the surplus of the power generation is reduced, and the energy utilization rate is improved.
In some embodiments, S1 includes:
s11, determining the solar irradiation amount corresponding to each photovoltaic module at each time point based on the position of the target building and the inclination angle and the orientation of each inclined surface of each photovoltaic module on the target building, and forming a curve (h1, h2,. hn), wherein n is the number of the photovoltaic modules with different inclination angles and orientations;
the power generation of the photovoltaic modules with different inclination angles and different orientations at each time is calculated and a curve is formed (a1, a 2.. an).
By adopting the technical scheme, the formula is adopted: the generated energy is calculated from the solar energy irradiation quantity, a curve is formed, and the design and comparison are convenient.
In some embodiments, S1 includes:
s12, placing curves (a1, a2,. an) of the power generation amount of each photovoltaic module with different time inclination angles and different orientation directions in the same coordinate system, superposing the power generation amounts of the photovoltaic modules at the same time to form the sum of the power generation amounts of the photovoltaic modules at each time point, and forming a curve A1 in the coordinate system.
By adopting the technical scheme, the generated energy sum of each photovoltaic module is obtained according to the generated energy of each photovoltaic module.
In some embodiments, S4 includes:
s41, placing the curve A2 and the curve A1 in the same coordinate system to obtain a time period within which the sum of the generated energy of each photovoltaic module needs to be adjusted;
and S42, determining the target power generation amount of the photovoltaic module with different installation inclination angles and orientations by combining the inclination angle and the solar irradiation amount corresponding to the photovoltaic module with different orientations at each time point and the time period which is obtained in the S41 and needs to be adjusted, and calculating the area of the photovoltaic module with different installation inclination angles and orientations.
Through adopting above-mentioned technical scheme, confirm the area of the photovoltaic module of different installation inclination and orientation, then make electricity generation and power consumption realize the matching as far as possible, reduce the surplus of electricity generation, improve energy utilization.
In some embodiments, S4 includes:
and S43, determining the target power generation amount of each photovoltaic module with different time inclination angles and different orientation according to the areas of the photovoltaic modules with different installation inclination angles and different orientation, and forming a curve (a1 ', a2 ',. an ').
By adopting the technical scheme, the change of the target power generation amount of each photovoltaic module with different time inclination angles and different orientations can be conveniently and visually displayed, so that the design and comparison are facilitated.
In some embodiments, curve a2 is placed in the same coordinate system as curve (a1 ', a2 ',.. an ').
By adopting the technical scheme, the relation between the total target power generation amount of each photovoltaic module at each time point and the change of the target power generation amount of each photovoltaic module with different time inclination angles and orientations along with the time can be conveniently and visually displayed, so that the design and comparison are facilitated.
In some embodiments, the location based on the target building includes a latitude based on the location, a declination angle of the sun corresponding to each time point of the location, and a time angle corresponding to each time point of the location.
By adopting the technical scheme, aiming at each time point, the solar energy irradiation amount corresponding to each photovoltaic module at each time point is determined according to the following formula:
wherein:
representing the solar irradiation amount corresponding to a group of photovoltaic components of the photovoltaic system at the inclination angle at each time point;
β represents the inclination angle and orientation;
Hbrepresenting the direct irradiation amount on the horizontal plane corresponding to a group of photovoltaic modules at each time point;
Hdrepresenting the scattering irradiation amount on the horizontal plane corresponding to a group of photovoltaic modules at each time point;
δ represents the solar declination angle at each time point;
ω represents the time angle at each time point.
In some embodiments, the factor for determining the solar irradiance for each photovoltaic module at each time point further includes air quality.
By adopting the technical scheme, the solar irradiation amount is more accurate.
In summary, compared with the prior art, the photovoltaic curtain wall design method for realizing matching of power generation and power utilization provided by the invention has the beneficial technical effects that:
the target generating capacity of the photovoltaic modules with different installation inclination angles and different orientations is determined by collecting real-time power utilization sum data of users in a target building, so that the areas of the photovoltaic modules with different installation inclination angles and different orientations are determined, power generation and power utilization are matched to the greatest extent, power generation surplus is reduced, and the energy utilization rate is improved.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
The invention discloses a design method of a photovoltaic curtain wall for realizing matching of power generation and power utilization, which comprises the following steps:
s1: based on the position of the target building and the inclination angle and the orientation of each inclined plane of the photovoltaic module on the target building, the sum of the solar irradiation amount corresponding to each photovoltaic module at each time point is determined, and the sum of the power generation amount of each photovoltaic module at each time point is calculated according to the sum of the solar irradiation amount to form a curve A1, which specifically comprises the following steps:
s11, determining the solar irradiation amount corresponding to each photovoltaic module at each time point based on the location of the target building and the inclination angle and the orientation of each inclined surface of each photovoltaic module on the target building, that is: based on the latitude of the position, the solar declination angle corresponding to each time point of the position and the time angle corresponding to each time point of the position, the solar irradiation amount corresponding to each photovoltaic module at each time point is determined according to the following formula for each time point:
wherein:
representing the solar irradiation amount corresponding to a group of photovoltaic components of the photovoltaic system at the inclination angle at each time point;
β represents the inclination angle and orientation;
Hbrepresenting the direct irradiation amount on the horizontal plane corresponding to a group of photovoltaic modules at each time point;
Hdrepresenting the scattering irradiation amount on the horizontal plane corresponding to a group of photovoltaic modules at each time point;
δ represents the solar declination angle at each time point;
ω represents the time angle at each time point;
then, forming a curve (h1, h 2.. hn) by the solar irradiation amount corresponding to each photovoltaic module at each time point, wherein n is the inclination angle and the number of photovoltaic modules with different orientations;
and finally adopting a formula: the power generation (solar irradiation) and the area of the photovoltaic module and the conversion efficiency of the photovoltaic module and the system efficiency are 0.28, so that the power generation of each time inclination angle and different photovoltaic modules is calculated and a curve (a1, a 2.. an) is formed;
s12, placing curves (a1, a2,. an) of the power generation amount of each photovoltaic module with different time inclination angles and different orientation directions in the same coordinate system, superposing the power generation amounts of the photovoltaic modules at the same time to form the sum of the power generation amounts of the photovoltaic modules at each time point, and forming a curve A1 in the coordinate system.
In order to obtain a more accurate result, the determination factor of the solar irradiation amount corresponding to each photovoltaic module at each time point may also include air quality, which is not described herein in detail.
S2: real-time electricity usage summary data for the user in the subject building is collected and curve B1 is formed.
S3: the curve a1 and the curve B1 are placed in the same coordinate system for comparison, and the curve a1 is adjusted to trend to the curve B1, so that a target power generation sum curve a2 of each photovoltaic module at each time point is obtained.
S4: the method includes the steps of determining target power generation amounts of photovoltaic modules with different installation inclination angles and orientations according to a curve A2, and calculating the areas of the photovoltaic modules with different installation inclination angles and orientations according to the power generation amount of the photovoltaic modules in unit area, and specifically includes the following steps:
s41, placing the curve A2 and the curve A1 in the same coordinate system to obtain a time period within which the sum of the generated energy of each photovoltaic module needs to be adjusted;
and S42, determining the target power generation amount of the photovoltaic module with different installation inclination angles and orientations by combining the inclination angle and the solar irradiation amount corresponding to the photovoltaic module with different orientations at each time point and the time period which is obtained in the S41 and needs to be adjusted, and calculating the area of the photovoltaic module with different installation inclination angles and orientations.
S43, determining the target power generation amount of each photovoltaic module with different time inclination angles and different orientation according to the areas of the photovoltaic modules with different installation inclination angles and different orientation, forming a curve (a1 ', a 2',... an '), and finally placing the curve A2 and the curve (a 1', a2 ',. an') in the same coordinate system, so that the change of the target power generation amount of each photovoltaic module with different time inclination angles and different orientation along with the time can be visually displayed, and the design and comparison are convenient.
According to the design method of the photovoltaic curtain wall for realizing power generation and power utilization matching, disclosed by the invention, the target power generation amount of the photovoltaic modules with different installation inclination angles and orientations is determined by collecting the real-time power utilization sum data of users in a target building, so that the areas of the photovoltaic modules with different installation inclination angles and orientations are determined, the power generation and the power utilization are matched to the greatest extent, the surplus of the power generation is reduced, and the energy utilization rate is improved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. The photovoltaic curtain wall design method for realizing matching of power generation and power utilization is characterized by comprising the following steps of:
s1: determining the sum of the solar irradiation amount corresponding to each photovoltaic module at each time point based on the position of the target building and the inclination angle of each photovoltaic module inclined plane on the target building, and calculating the sum of the power generation amount of each photovoltaic module at each time point according to the sum of the solar irradiation amount to form a curve A1;
s2: collecting real-time electricity utilization data of users in a target building and forming a curve B1;
s3: the curve A1 and the curve B1 are placed in the same coordinate system to be compared, the curve A1 is adjusted to trend to the curve B1, and then a target power generation sum curve A2 of each photovoltaic module at each time point is obtained;
s4: determining target power generation amounts of the photovoltaic modules with different inclination angles according to the curve A2, and calculating the areas of the photovoltaic modules with different inclination angles according to the power generation amounts of the photovoltaic modules with unit areas, wherein the method specifically comprises the following steps:
s41, placing the curve A2 and the curve A1 in the same coordinate system to obtain a time period within which the sum of the generated energy of each photovoltaic module needs to be adjusted;
and S42, determining the target power generation amount of the new photovoltaic module with different inclination angles by combining the solar irradiation amount corresponding to the photovoltaic module with different inclination angles at each time point and the time period which is obtained in the S41 and needs to be adjusted, and calculating the area of the photovoltaic module with different inclination angles.
2. The method for designing the photovoltaic curtain wall for realizing the matching of the power generation and the electricity utilization as claimed in claim 1, wherein the step S1 comprises the following steps:
s11, determining the solar irradiation amount corresponding to each photovoltaic module at each time point based on the position of the target building and the inclination angle of each photovoltaic module inclined plane on the target building, and forming a curve (h1, h2,. hn), wherein n is the number of the photovoltaic modules with different inclination angles;
and calculating the power generation amount of each photovoltaic module with different inclination angles at each time, and forming a curve (a1, a 2.. an).
3. The method for designing the photovoltaic curtain wall for realizing the matching of the power generation and the electricity utilization as claimed in claim 2, wherein the step S1 comprises the following steps:
s12, placing curves (a1, a2, a.. an) of the power generation amount of each photovoltaic module with different time inclination angles in the same coordinate system, superposing the power generation amounts of the photovoltaic modules at the same time to form the sum of the power generation amounts of the photovoltaic modules at each time point, and forming a curve A1 in the coordinate system.
4. The method for designing the photovoltaic curtain wall for realizing the matching of the power generation and the electricity utilization as claimed in claim 3, wherein S4 comprises:
and S43, determining the target power generation amount of each photovoltaic module with different inclination angles at each time according to the areas of the photovoltaic modules with different inclination angles, and forming a curve (a1 ', a2 ',. an ').
5. The method for designing the photovoltaic curtain wall for realizing the matching of the power generation and the power utilization as claimed in claim 4, wherein the curve A2 and the curve (a1 ', a2 ',. an ') are placed in the same coordinate system.
6. The method as claimed in claim 1, wherein the location of the target-based building includes a latitude based on the location, a declination angle of the sun at each time point of the location, and a time angle at each time point of the location.
7. The method for designing a photovoltaic curtain wall to realize matching between power generation and power utilization as claimed in claim 1, wherein the factor for determining the solar irradiance corresponding to each photovoltaic module at each time point further includes air quality.
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| CN111900911A (en) * | 2020-06-24 | 2020-11-06 | 西安中易建科技有限公司 | Method and device for time-domain matching of photovoltaic power generation of building facade and load power utilization |
| GB2618069A (en) * | 2022-04-20 | 2023-11-01 | Empati Ltd | Real-time energy tracking method and system |
| CN114665518B (en) * | 2022-05-25 | 2022-10-14 | 深圳市中旭新能源有限公司 | Household ultra-long string photovoltaic system, power optimization device and overvoltage protection method |
| CN116722802A (en) * | 2023-06-13 | 2023-09-08 | 安徽华晟新能源科技有限公司 | Method, device, equipment and medium for installing and configuring components of photovoltaic power station |
| CN116742716A (en) * | 2023-06-13 | 2023-09-12 | 安徽华晟新能源科技有限公司 | Photovoltaic power station output power adjusting method and device and computer equipment |
| CN117937715A (en) * | 2024-03-21 | 2024-04-26 | 时代绿建(福建)工程科技有限公司 | Intelligent building photovoltaic glass power supply control method and system thereof |
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