CN-122021403-A - Floating type photovoltaic panel array wind load calculation method and related equipment

CN122021403ACN 122021403 ACN122021403 ACN 122021403ACN-122021403-A

Abstract

The application provides a floating type photovoltaic panel array wind load calculation method and related equipment, belonging to the technical field of photovoltaic power generation, wherein the method comprises the following steps: calculating the body type coefficient of the first row of photovoltaic panels at the windward side according to the relation between the width ratio of the photovoltaic arrays and the body type coefficient; calculating the overall shielding effect reduction coefficient of the photovoltaic panel array according to the body type coefficient of the first row of photovoltaic panels at the windward side by adopting a two-dimensional blunt body flow-around model; and calculating the wind load of the photovoltaic panel array according to the overall shielding effect reduction coefficient of the photovoltaic panel array. The application aims to calculate the wind load of the photovoltaic panel array according to the influence of the row spacing on the wind load of the photovoltaic panel array, and improve the calculation accuracy of the wind load of the photovoltaic panel array.

Inventors

WANG KAI
ZENG SHAOPENG
WU YUNPENG
XU DONG
JIANG HONGYANG
ZHANG DEYUN

Assignees

中国电建集团湖北工程有限公司

Dates

Publication Date: 20260512
Application Date: 20251230

Claims (10)

1. The wind load calculation method for the floating type photovoltaic panel array is characterized by comprising the following steps of: Calculating the body type coefficient of the first row of photovoltaic panels at the windward side according to the relation between the width ratio of the photovoltaic arrays and the body type coefficient; calculating the overall shielding effect reduction coefficient of the photovoltaic panel array according to the body type coefficient of the first row of photovoltaic panels at the windward side by adopting a two-dimensional blunt body flow-around model; and calculating the wind load of the photovoltaic panel array according to the overall shielding effect reduction coefficient of the photovoltaic panel array.
2. The method for calculating wind load of a floating photovoltaic panel array according to claim 1, wherein calculating the figure factor of the first row of photovoltaic panels on the windward side according to the relation between the width ratio between the photovoltaic arrays and the figure factor comprises: and (3) keeping the wind direction angle and the inclination angle of the photovoltaic panel unchanged, and calculating the wind vibration type coefficients of the first row of photovoltaic panels at different line spacings by using a CFD numerical simulation method.
3. The method for calculating wind load of a floating photovoltaic panel array according to claim 2, wherein calculating the overall shading effect reduction coefficient of the photovoltaic panel array according to the body type coefficient of the first row of photovoltaic panels at the windward side by using the two-dimensional blunt body detour model comprises: Calculating to obtain the body type coefficients of each row of photovoltaic panels of the photovoltaic array based on a two-dimensional blunt body flow-around model by using a CFD numerical simulation method; and calculating the integral shielding effect reduction coefficient of the photovoltaic panel array according to the body type coefficient of each row of photovoltaic panels of the photovoltaic array.
4. A method of calculating wind load of a floating photovoltaic panel array according to claim 3, wherein said calculating wind load of a photovoltaic panel array based on an overall shading effect reduction coefficient of said photovoltaic panel array comprises: and calculating the wind load of the photovoltaic panel array according to the horizontal wind load of the first row of photovoltaic panels at the windward side and the overall shielding effect reduction coefficient of the photovoltaic panel array.
5. The method for calculating wind load of a floating photovoltaic panel array according to claim 1, wherein after calculating the overall shading effect reduction coefficient of the photovoltaic panel array according to the body type coefficient of the first row of photovoltaic panels at the windward side by using a two-dimensional blunt body flow around model, the method further comprises: and calculating the relation between the row spacing of the photovoltaic array and the shielding effect reduction coefficient of the sixty rows of photovoltaic panel arrays.
6. The method of claim 5, wherein calculating the wind load of the photovoltaic array according to the overall shading effect reduction coefficient of the photovoltaic array further comprises: When the photovoltaic panel array is larger than sixty rows, the wind load of the photovoltaic panel array is calculated according to the number of rows of the photovoltaic panel array, the horizontal wind load of the first row of photovoltaic panels on the windward side and the relation between the row spacing of the photovoltaic array and the shielding effect reduction coefficient of the sixty-pi photovoltaic panel array.
7. A method of wind load calculation for a floating photovoltaic array according to any one of claims 1 to 6, wherein the overall shadowing reduction factor of the photovoltaic array The method comprises the following steps: Wherein, the Is the figure coefficient of the k row of photovoltaic panels, The first row of photovoltaic panel body type coefficients, and N is the total row number of the photovoltaic panel array.
8. A floating photovoltaic panel array wind load computing system, comprising: the body type coefficient calculation module is used for calculating the body type coefficient of the first row of photovoltaic panels at the windward side according to the relation between the width ratio between the photovoltaic arrays and the body type coefficient; The reduction coefficient calculation module is used for calculating the overall shielding effect reduction coefficient of the photovoltaic panel array according to the body type coefficient of the first row of photovoltaic panels at the windward side by adopting a two-dimensional blunt body flow-around model; And the wind load calculation module is used for calculating the wind load of the photovoltaic panel array according to the integral shielding effect reduction coefficient of the photovoltaic panel array.
9. An electronic device comprising a processor and a memory for storing computer program code, the computer program code comprising computer instructions, the processor implementing a floating photovoltaic panel array wind load calculation method according to any one of claims 1 to 7 when the computer program is executed.
10. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements a floating photovoltaic panel array wind load calculation method according to any one of claims 1 to 7.

Description

Floating type photovoltaic panel array wind load calculation method and related equipment Technical Field The invention relates to the technical field of photovoltaic power generation, in particular to a floating type photovoltaic panel array wind load calculation method and related equipment. Background Solar energy is taken as a renewable, green and pollution-free clean energy source, which is an important part of a future diversified power generation mode, and water surface floating type photovoltaic power generation is taken as an important form of solar energy innovative application, and is one of the hot spots of engineering application and scientific research at home and abroad at present by virtue of the unique advantages and great potential. The construction of floating photovoltaic power plants will face multiple challenges, where safety and economic challenges are the first to go against, both to ensure that the floating structures have sufficient stability and bearing capacity in harsh marine environments, and to take into account the cost and benefits of the photovoltaic power plant systems. Wind load is the primary environmental load for determining the safety and stability of a floating photovoltaic system in a fresh water area or an offshore area, wind load calculation of a photovoltaic panel array is one of key problems which must be solved when a floating photovoltaic power station is designed, structural damage is directly caused due to insufficient wind resistance, an anchor system is also caused to be invalid, and an integral array drift accident occurs. The current method for determining the wind load of the whole photovoltaic panel array mainly comprises the following three steps of calculating the horizontal wind load of the 1st row on the windward side, calculating the average shielding effect coefficient and calculating the horizontal wind load of the whole photovoltaic panel array. For the floating type photovoltaic panel array, the key of calculating wind load is to determine the body type coefficient, the conventional building structure is in a single form and belongs to the three-dimensional blunt body flow-around problem, while the floating type photovoltaic panel is in an array form, the first row is not only provided with one photovoltaic panel, but also provided with tens of columns or even hundreds of columns of photovoltaic panels, and the floating type photovoltaic panel can be approximately regarded as the two-dimensional blunt body flow-around problem, so that the corresponding body type coefficient in the prior art is not suitable to be directly selected. In fact, when the wind direction angle and the wind direction angle are kept unchanged, the group shielding effect is changed by changing the distance between each row of photovoltaic plates in the photovoltaic plate array, so that the body type coefficient of each row of photovoltaic plates is changed, and accordingly, the wind load acting on the photovoltaic plate array is changed accordingly, and therefore, the calculated value and the actual value of the wind load can be greatly accessed by adopting the unified wind carrier type coefficient and shielding coefficient based on the specification without considering the influence of the line distance of the photovoltaic plate array. Disclosure of Invention The embodiment of the application mainly aims to provide a floating type photovoltaic panel array wind load calculation method and related equipment, which aim to calculate the wind load of a photovoltaic panel array according to the influence of the line spacing on the wind load of the photovoltaic panel array and improve the calculation accuracy of the wind load of the photovoltaic panel array. In order to achieve the above objective, an aspect of an embodiment of the present application provides a method for calculating wind load of a floating photovoltaic panel array, including: Calculating the body type coefficient of the first row of photovoltaic panels at the windward side according to the relation between the width ratio of the photovoltaic arrays and the body type coefficient; calculating the overall shielding effect reduction coefficient of the photovoltaic panel array according to the body type coefficient of the first row of photovoltaic panels at the windward side by adopting a two-dimensional blunt body flow-around model; and calculating the wind load of the photovoltaic panel array according to the overall shielding effect reduction coefficient of the photovoltaic panel array. In some embodiments, calculating the figure of merit for the first row of windward side photovoltaic panels from the relationship between the width ratio and the figure of merit between the photovoltaic arrays comprises: and (3) keeping the wind direction angle and the inclination angle of the photovoltaic panel unchanged, and calculating the wind vibration type coefficients of the first row of photovoltaic panels at different