CN115441826A

CN115441826A - Photovoltaic system and inclination angle control method thereof

Info

Publication number: CN115441826A
Application number: CN202211224984.2A
Authority: CN
Inventors: 庞亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2022-12-06

Abstract

The invention discloses a photovoltaic system and a tilt angle control method thereof, wherein the photovoltaic system comprises: a support device; the photovoltaic panels are movably arranged on the supporting device respectively, the photovoltaic panels are arranged in a row at least along a first direction to form a photovoltaic group, and under the condition that one photovoltaic group is arranged, the inclination angles of at least two adjacent photovoltaic panels of the photovoltaic group are adjustable respectively, so that the inclination angles of the at least two adjacent photovoltaic panels are different, and wind loads borne by the two adjacent photovoltaic panels are offset by at least one part of each other on the supporting device; and the driving device is connected with the photovoltaic panels to drive the photovoltaic panels. According to the photovoltaic system provided by the embodiment of the invention, the photovoltaic panels of the photovoltaic system are positioned at different inclination angles in a wind-resistant state, so that the resultant force of wind load on the supporting device born by the photovoltaic system can vertically offset at least one part, the influence of wind power on the photovoltaic system is effectively reduced, the safety of the photovoltaic system is improved, and the service life of the photovoltaic system is prolonged.

Description

Photovoltaic system and inclination angle control method thereof

Technical Field

The invention belongs to the technical field of photovoltaic equipment, and particularly relates to a photovoltaic system and a tilt angle control method of the photovoltaic system.

Background

At present, photovoltaic module arrays commonly used in the photovoltaic field are generally composed of a plurality of individual photovoltaic panels, which are generally rectangular panels about 2 meters long and about 1 meter wide. The photovoltaic industry currently typically arranges photovoltaic modules in rows to achieve higher land utilization. The photovoltaic modules arranged in rows form a larger rectangle.

The existing photovoltaic system can control the whole row of photovoltaic modules to rotate along with the sunlight irradiation direction through a driving mechanism, so that a better positive is obtained. When a large rectangular structure formed by the photovoltaic modules forms an inclination angle with the horizontal plane and wind blows in the direction of the inclination angle, the rectangular structure is equivalent to a classical flat-plate airfoil in aerodynamics, and the inclination angle is an attack angle. Depending on the angle of attack, the rectangular area is subjected to wind forces of different direction and magnitude, which are detrimental to the structural stability of the photovoltaic system. The angle of attack is positive, produces ascending lift and positive moment of torsion, and the angle of attack is negative, produces decurrent holding down force and negative moment of torsion, and the angle of attack is zero, is in the horizontality promptly, does not have lift nor holding down force, also does not have the moment of torsion, nevertheless because present photovoltaic support rigidity is generally on the low side, the photovoltaic module of horizontal placement can make the structure unstability because the negative rigidity problem that aeroelasticity arouses, consequently can generally not rotate the photovoltaic board to the horizontality under the anti-wind state, but makes all photovoltaic boards all rotate to certain specific angle and come the anti-wind.

However, in a state that all wind-affected areas of the photovoltaic module are rotated to the same inclination angle, the wind load direction of each wind-affected area is the same, the resultant force acts on the supporting mechanism, the resultant force is larger, the structure of the photovoltaic bracket is more unfavorable, and especially for some flexible structures such as a cable structure or some soft foundation forms such as a floating foundation, a foundation above silt, an ocean foundation, a mining backfill area foundation and the like, the structure of the photovoltaic system is easily damaged, the safety is reduced, and the service life is shortened.

Disclosure of Invention

The present invention is directed to a photovoltaic system and a tilt angle control method thereof, which at least solve one of the problems of the related art.

In order to solve the technical problem, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a photovoltaic system, including: a support device; the photovoltaic panels are movably arranged on the supporting device respectively, the photovoltaic panels are arranged in a row along a first direction to form a photovoltaic group, and under the condition that one photovoltaic group is arranged, the inclination angles of at least two adjacent photovoltaic panels of the photovoltaic group are adjustable respectively, so that the inclination angles of at least two adjacent photovoltaic panels are different, and wind loads borne by the two adjacent photovoltaic panels offset at least one part of each other on the supporting device; in the case that there are a plurality of photovoltaic groups, the inclination angle of the photovoltaic panel of each photovoltaic group is adjustable, so that the inclination angle of the photovoltaic panels of two adjacent photovoltaic groups is different, and/or the inclination angle of at least two adjacent photovoltaic panels of one photovoltaic group is different, so that the wind load on two adjacent photovoltaic panels or two adjacent photovoltaic groups on the supporting device can offset at least a part of each other; and the driving device is connected with the photovoltaic panels to drive the photovoltaic panels.

According to the photovoltaic system provided by the embodiment of the invention, the inclination angles of the two adjacent photovoltaic panels of one row of photovoltaic groups are adjusted to be different, or the inclination angles of the two adjacent rows of photovoltaic panels are adjusted to be different, so that the photovoltaic panels of the photovoltaic system are positioned at different inclination angles in a wind-resistant state, at least a part of resultant force of wind load borne by the photovoltaic system on the supporting device can be vertically offset, the influence of wind force on the photovoltaic system is effectively reduced, the safety of the photovoltaic system is improved, and the service life of the photovoltaic system is prolonged.

According to one embodiment of the invention, the number of the photovoltaic groups is one, and the inclination angles of any two adjacent photovoltaic panels in the photovoltaic groups are respectively adjustable, so that the inclination angles of any two adjacent photovoltaic panels are different.

According to one embodiment of the invention, the photovoltaic groups are plural, and the plural photovoltaic groups are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.

According to one embodiment of the invention, the inclination angles of any two adjacent photovoltaic panels of the photovoltaic group are respectively adjustable, so that the inclination angles of any two adjacent photovoltaic panels are different.

According to one embodiment of the invention, the support device comprises: at least two support frames, wherein the at least two support frames are arranged along the first direction at intervals; the flexible connecting piece, flexible connecting piece extends along first direction, flexible connecting piece's both ends and at least two the support frame is connected, the photovoltaic board is located flexible connecting piece.

According to an embodiment of the present invention, the flexible connecting member is a pulling cable, the pulling cable is applied with a pre-tightening force, and the supporting device further includes: the anti twist beam, the anti twist beam is rotationally located around the axis that extends along first direction the flexonics spare, the photovoltaic board is located the anti twist beam.

According to an embodiment of the present invention, there is one photovoltaic group, there are a plurality of torsion beams, and the plurality of photovoltaic panels of one photovoltaic group are sequentially spaced apart from and disposed on the corresponding torsion beams.

According to an embodiment of the present invention, the number of the photovoltaic groups is plural, each of the photovoltaic groups is provided with one of the torsion beams, and the plurality of the photovoltaic panels of each of the photovoltaic groups is provided with one of the torsion beams.

According to one embodiment of the invention, the photovoltaic groups are multiple, each photovoltaic group is provided with a plurality of torsion beams, and the photovoltaic plates of each photovoltaic group are sequentially arranged on the corresponding torsion beams at intervals.

According to the second aspect of the invention, the tilt angle control method of the photovoltaic system comprises the following steps: monitoring the wind direction and the wind speed received by the photovoltaic system; monitoring the incident angle of sunlight; and adjusting the inclination angles of two adjacent photovoltaic panels of the photovoltaic system to be different and/or adjusting the inclination angles of the photovoltaic panels of two adjacent photovoltaic groups of the photovoltaic system to be different according to the monitored sunlight incidence angle, the wind direction and the wind speed.

According to an embodiment of the invention, the tilt angle control method further comprises: setting a plurality of extreme wind working conditions, wherein each extreme wind working condition comprises a set included angle and a set wind speed, and the set included angle is an included angle formed by a wind direction and the first direction; when the monitored wind speed is larger than the set wind speed under a certain extreme wind working condition, and the monitored included angle between the wind power direction and the first direction is smaller than the set included angle under the certain extreme wind working condition, adjusting the inclination angles of two adjacent photovoltaic panels of the photovoltaic system to be different; and when the monitored wind speed and the monitored included angle between the wind power direction and the first direction do not meet any limit wind working condition, adjusting the inclination angle of the photovoltaic panel according to the sunlight incident angle.

According to one embodiment of the invention, the inclination angle of two adjacent photovoltaic panels of the photovoltaic system or two adjacent photovoltaic groups of the photovoltaic system ranges from 10 ° to 15 ° when any one of the extreme wind conditions is met.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a photovoltaic system according to one embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a photovoltaic system according to another embodiment of the present invention;

FIG. 3 is a side view of a photovoltaic system according to another embodiment of the present invention;

fig. 4 is a side view of a photovoltaic system according to yet another embodiment of the present invention.

Reference numerals are as follows:

a photovoltaic system 100;

a support device 10; a flexible connecting member 11; a torsion beam 12; a support frame 13;

a photovoltaic panel 20;

a drive device 30; a first synchronization mechanism 31; a second synchronization mechanism 32.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The features of the terms first and second in the description and in the claims of the invention may explicitly or implicitly comprise one or more of these features. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The photovoltaic system 100 according to an embodiment of the present invention is first described in detail with reference to the drawings.

As shown in fig. 1 to 4, a photovoltaic system 100 according to an embodiment of the present invention includes: a support means 10, a plurality of photovoltaic panels 20 and a drive means 30.

Specifically, the photovoltaic panels 20 are movably disposed on the supporting device 10, the photovoltaic panels 20 are arranged in a row along a first direction to form a photovoltaic group, and when there is one photovoltaic group, the tilt angles of at least two adjacent photovoltaic panels 20 of the photovoltaic group are adjustable, so that the tilt angles of at least two adjacent photovoltaic panels 20 are different, and the wind loads applied to two adjacent photovoltaic panels 20 on the supporting device 10 offset each other by at least a part of each other; in the case of a plurality of photovoltaic groups, the inclination angle of the photovoltaic panels 20 of each photovoltaic group is respectively adjustable so that the inclination angles of the photovoltaic panels 20 of two adjacent photovoltaic groups are different and/or the inclination angles of at least two adjacent photovoltaic panels 20 of one photovoltaic group are different so that the wind loads experienced by two adjacent photovoltaic panels 20 or two adjacent photovoltaic groups cancel each other out at least partially on the support device 10. The driving device 30 is connected to the plurality of photovoltaic panels 20 to drive the photovoltaic panels 20.

In other words, the photovoltaic system 100 according to the embodiment of the present invention is mainly composed of a plurality of photovoltaic panels 20, a supporting device 10 for supporting the photovoltaic panels 20, and a driving device 30 for driving the photovoltaic panels 20 to rotate. Wherein, the supporting device 10 can be a structure commonly used in the art and can support the photovoltaic panel 20, and the photovoltaic panel 20 can move on the supporting device 10 to adjust the inclination angle thereof relative to the horizontal plane, and the driving device 30 can drive a single photovoltaic panel 20 to move, or can drive a plurality of photovoltaic panels 20 to move simultaneously.

The inclination angle of the photovoltaic panel 20 refers to the angle at which the photovoltaic panel 20 is inclined with respect to the horizontal plane, which can be adjusted by the position of the photovoltaic panel 20 on the support device 10. The adjustment of the photovoltaic panel 20 on the support device 10 can be performed by a driving device 30, and the driving device 30 can be a conventional structure capable of rotating the photovoltaic panel 20, such as a structure that drives the photovoltaic panel 20 to rotate through a support arm and the like.

The principle of the wind resistance effect achieved by the different inclination angles of the photovoltaic panel 20 will be described in detail below.

As shown in fig. 1, taking the example that the inclination angles of the adjacent two photovoltaic panels 20 are different, the plurality of photovoltaic panels 20 in fig. 1 are arranged at intervals in the left-right direction, one of the adjacent two photovoltaic panels 20 is inclined forward to form an inclination angle, and the other of the adjacent two photovoltaic panels 20 is inclined backward to form an inclination angle.

When the photovoltaic panels 20 are subjected to wind force in the front-to-rear direction as shown in fig. 1, a part of the wind force blows to the front surface of one photovoltaic panel 20 of the two adjacent photovoltaic panels 20, and the wind force is decomposed by the front surface of the photovoltaic panel 20, and a part of the acting force forms an upward lifting force. Another part of the wind blows to the back surface of the other photovoltaic panel 20 of the two adjacent photovoltaic panels 20, and the wind force is decomposed through the back surface of the photovoltaic panel 20, and a part of the acting force forms downward pressure.

When the inclination directions of the two adjacent photovoltaic panels 20 are opposite, but the inclination angles are not equal, the two adjacent photovoltaic panels 20 can counteract part of the vertical acting force. In the case that the inclination angles of two adjacent photovoltaic panels 20 are equal but the inclination directions are opposite, the two adjacent photovoltaic panels 20 can sufficiently counteract the wind force in the vertical direction, so as to reduce the pressure and torque on the supporting device 10 and improve the safety of the photovoltaic system 100.

Therefore, according to the photovoltaic system 100 of the embodiment of the present invention, by adjusting the inclination angles of two adjacent photovoltaic panels 20 of one row of photovoltaic groups to be different, or adjusting the inclination angles of two adjacent rows of photovoltaic panels 20 to be different, the photovoltaic panels 20 of the photovoltaic system 100 are at different inclination angles in a wind-resistant state, so that a resultant force of wind load applied to the photovoltaic system 100 on the supporting device 10 can vertically offset at least a portion, thereby effectively reducing the influence of wind force on the photovoltaic system 100, improving the safety of the photovoltaic system 100, and prolonging the service life of the photovoltaic system 100.

According to one embodiment of the present invention, the supporting device 10 comprises: at least two support brackets 13 and a flexible connecting member 11.

Wherein, two at least support frames 13 set up along first direction interval, and flexible connectors 11 extend along first direction, and flexible connectors is connected with two at least support frames 13 at the both ends of flexible connectors 11, and flexible connectors is located to photovoltaic board 20.

That is, the supporting device 10 may be composed of two supporting frames 13 arranged at intervals in the first direction and a flexible connecting member 11 disposed between the two supporting frames 13, the two supporting frames 13 may function to support the flexible connecting member 11, and the flexible connecting member 11 may be used to mount the photovoltaic panel 20 and facilitate the rotation of the photovoltaic panel 20 on the flexible connecting member 11.

Optionally, in some embodiments of the present invention, the flexible connecting element 11 is a pulling cable, the pulling cable is applied with a pre-tightening force, and the supporting device 10 further includes: the torsion-resistant beam 12, the torsion-resistant beam 12 are rotatably arranged on the flexible connecting piece 11 around the axis of the torsion-resistant beam 12, and the photovoltaic panel 20 is arranged on the torsion-resistant beam 12.

In other words, the flexible connecting member 11 may be formed by a cable, a pretightening force is applied to two ends of the cable to connect with the corresponding supporting frames 13, the cable is provided with a torsion beam 12, the torsion beam 12 may be a columnar structure, the torsion beam 12 may rotate around an axis of the cable, or rotate around an axis of the torsion beam 12 itself, the photovoltaic panel 20 is disposed on the torsion beam 12, so as to be driven by the torsion beam 12, and the driving device 30 is connected with the torsion beam 12, and thus an inclination angle of the photovoltaic panel 20 can be adjusted by driving the torsion beam 12.

The supporting device 10 is a device supporting frame 13 that can fix and support the photovoltaic panel 20, and may include, but is not limited to, conventional supporting structures such as beams, columns, cables, and the like, and building foundations such as pile foundations, gravity foundations, bucket foundations, and roof foundations. The torsion beam 12 may be used to mount the photovoltaic panel 20 and allow the photovoltaic panel 20 to rotate therewith about an axis. The driving device 30 can control and drive the photovoltaic panel 20 to rotate, and the driving device 20 can be a rotating motor, a push rod, a control arm, etc. in the prior art, and is not limited in detail herein. Therefore, the supporting device 10 is simple and feasible in structure and high in practicability.

According to one embodiment of the present invention, there is one photovoltaic group, and the inclination angles of any two adjacent photovoltaic panels 20 of the photovoltaic group are respectively adjustable, so that the inclination angles of any two adjacent photovoltaic panels 20 are different.

Correspondingly, the photovoltaic group is one, the torsion beam 12 is multiple, and the photovoltaic panels 20 of the photovoltaic group are sequentially arranged on the corresponding torsion beam 12 in a spaced manner.

That is, as shown in fig. 1, when the plurality of photovoltaic panels 20 are arranged in a row in a first direction (a left-right direction shown in fig. 1), the plurality of photovoltaic panels 20 form a photovoltaic group, the supporting device 10 may include a flexible connecting member 11 extending in the first direction, for example, a pulling cable, a pre-tightening force is applied to both ends of the pulling cable, a plurality of torsion beams 12 spaced apart from each other in the first direction are provided on the pulling cable, the torsion beams 12 may be of a steel tube structure, one photovoltaic panel 20 is provided on each torsion beam 12, each torsion beam 12 is rotatably provided on the pulling cable around its own axis, and each torsion beam 12 is connected to one driving device 30, so that the driving device 30 can drive each photovoltaic panel 20 to independently move to adjust the tilt angle.

Any two adjacent photovoltaic panels 20 of the plurality of photovoltaic panels 20 can be driven by the driving device 30, so that the inclination angles of the two adjacent photovoltaic panels 20 are different. In order to facilitate synchronous control of the plurality of photovoltaic panels 20, the driving devices 30 may be divided into two groups, where one group of driving devices 30 is connected to one of the two adjacent photovoltaic panels 20, and the other group of driving devices 30 is connected to the other of the two adjacent photovoltaic panels 20, that is, the photovoltaic panels 20 connected to the two groups of driving devices 30 are sequentially and alternately distributed, so that the inclination angles of any two adjacent photovoltaic panels 20 are different.

In other embodiments of the present invention, the photovoltaic groups are a plurality of photovoltaic groups, and the plurality of photovoltaic groups are spaced apart along a second direction, the second direction being perpendicular to the first direction.

Optionally, the inclination angles of any two adjacent photovoltaic panels 20 of the photovoltaic group are respectively adjustable, so that the inclination angles of any two adjacent photovoltaic panels 20 are different.

Accordingly, there are a plurality of photovoltaic groups, each photovoltaic group is provided with a plurality of torsion beams 12, and a plurality of photovoltaic panels 20 of each photovoltaic group are sequentially arranged at intervals on the corresponding torsion beams 12.

As shown in fig. 2 and 3, when a plurality of photovoltaic panels 20 are arranged in a row in a first direction (a left-right direction shown in fig. 2) and a plurality of rows in a second direction (a front-back direction shown in fig. 2), the plurality of rows of photovoltaic groups may be disposed on the same support device 10, or each row of photovoltaic groups may be individually disposed on one support device 10. Taking the example of individually arranging each row of photovoltaic groups on one support device 10, the support device 10 may include a flexible connection member 11 extending along a first direction, such as a cable, to which a pre-tightening force is applied at two ends, the cable is provided with a plurality of torsion beams 12 spaced apart along the first direction, the torsion beams 12 may be of a steel tube structure, each torsion beam 12 is provided with one photovoltaic panel 20, each torsion beam 12 is rotatably arranged on the cable around its own axis or an axis extending along the first direction, the driving device 30 may be divided into a first synchronization mechanism 31 and a second synchronization mechanism 32, wherein the first synchronization mechanism 31 is connected to a portion of the photovoltaic panels 20 corresponding to a position in the rows of photovoltaic groups to synchronously drive the plurality of photovoltaic panels 20 to move, the second synchronization mechanism 32 is spaced apart from the first synchronization mechanism 31, and the second synchronization mechanism 32 is connected to the remaining photovoltaic panels 20 corresponding to a position in the rows of photovoltaic groups to synchronously drive the remaining photovoltaic panels 20 to move.

That is to say, in this embodiment, the photovoltaic groups include a plurality of rows, the photovoltaic groups in each row can make the inclination angles of two adjacent photovoltaic panels 20 different, and the photovoltaic panels 20 of a plurality of photovoltaic groups can be simultaneously driven synchronously by the first synchronization mechanism 31 and the second synchronization mechanism 32, which not only can ensure the efficiency of adjustment, but also can ensure the consistency of a plurality of photovoltaic panels 20, thereby improving the wind resistance and safety.

In other embodiments of the present invention, there are a plurality of photovoltaic groups, each photovoltaic group is provided with one torsion beam 12, and a plurality of photovoltaic panels 20 of each photovoltaic group are provided with one torsion beam 12.

When there are a plurality of photovoltaic groups, as shown in fig. 4, each row of photovoltaic groups can also be controlled by one driving structure individually, so that the inclination angles of the photovoltaic panels 20 of each row of photovoltaic groups are the same. For example, the support device 10 of each row of photovoltaic group includes the flexible connection 11 that extends along the first direction, for example, the pretightning force is exerted at the both ends of cable, can only set up a torsion beam 12 on the cable, and a torsion beam 12 is located in proper order to a plurality of photovoltaic board 20 spaced apart, and drive arrangement 30 only need drive a torsion beam 12 and rotate, can drive the photovoltaic board 20 synchronous rotation of whole photovoltaic group simultaneously in order to adjust the inclination. When the photovoltaic system 100 needs to be adjusted to resist wind, the inclination angles of the photovoltaic panels 20 of two adjacent rows of photovoltaic groups can be adjusted to be different, so as to achieve the wind-resistant effect.

The tilt angle control method of the photovoltaic system 100 according to an embodiment of the present invention is specifically described below.

The tilt angle control method of the photovoltaic system 100 according to the embodiment of the present invention includes the steps of:

the wind direction and wind speed received by the photovoltaic system 100 are monitored.

The sunlight incident angle is monitored.

According to the monitored sunlight incident angle, wind direction and wind speed, the inclination angles of two adjacent photovoltaic panels 20 of the photovoltaic system 100 are adjusted to be different, and/or the inclination angles of the photovoltaic panels 20 of two adjacent photovoltaic groups of the photovoltaic system 100 are adjusted to be different.

Specifically, according to an embodiment of the present invention, the tilt angle control method further includes: setting a plurality of extreme wind working conditions, wherein each extreme wind working condition comprises a set included angle and a set wind speed, and the set included angle is an included angle formed by a wind direction and a first direction; when the monitored wind speed is larger than the set wind speed of a certain extreme wind working condition, and the included angle between the monitored wind direction and the first direction is smaller than the set included angle of the certain extreme wind working condition, adjusting the inclination angles of two adjacent photovoltaic panels 20 of the photovoltaic system 100 to be different; when the monitored wind speed is smaller than the set wind speed of a certain extreme wind working condition, and the included angle between the monitored wind direction and the first direction is larger than the set included angle of the certain extreme wind working condition, adjusting the inclination angles of the photovoltaic panels 20 of two adjacent photovoltaic modules of the photovoltaic system 100 to be different; and when the monitored wind speed and the monitored included angle between the wind direction and the first direction do not meet any limit wind working condition, adjusting the inclination angle of the photovoltaic panel 20 according to the sunlight incident angle.

Under any condition of meeting the extreme wind working condition, the inclination angle of two adjacent photovoltaic panels 20 of the photovoltaic system 100 or the inclination angle of the photovoltaic panels 20 of two adjacent photovoltaic groups of the photovoltaic system 100 ranges from 10 degrees to 15 degrees.

In other words, the photovoltaic system 100 according to the embodiment of the present invention does not need to consider the wind resistance of the photovoltaic panel 20 under the normal use condition, for example, when the wind speed is low, and at this time, only the tilt angle of the photovoltaic panel 20 needs to be adjusted according to the monitored angle of the incident angle of the sunlight. When the photovoltaic system 100 monitors that the wind direction and the wind speed exceed the set limit wind condition, the inclination angles of the two adjacent photovoltaic panels 20 or the inclination angles of the photovoltaic panels 20 of the two adjacent photovoltaic groups may be adjusted to be different according to the actual monitoring result. And the inclination angles of the two adjacent photovoltaic panels 20 or the photovoltaic panels 20 of the two adjacent photovoltaic groups can be controlled within the range of 10 ° to 15 °, thereby ensuring the offsetting effect on the wind power.

Therefore, according to the inclination angle control method of the photovoltaic system 100 provided by the embodiment of the invention, the inclination angle of the photovoltaic panel 20 can be adjusted in time according to the wind direction and the wind speed, so that the influence of wind on the photovoltaic system 100 is effectively reduced, and the safety of the photovoltaic system 100 is improved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A photovoltaic system, comprising:

a support device;

a plurality of photovoltaic panels movably arranged on the supporting device respectively, the photovoltaic panels are at least arranged in a row along a first direction to form a photovoltaic group,

in the case of one photovoltaic group, the inclination angles of at least two adjacent photovoltaic panels of the photovoltaic group are respectively adjustable, so that the inclination angles of at least two adjacent photovoltaic panels are different, so that the wind loads applied to two adjacent photovoltaic panels offset each other by at least a part on the supporting device;

in the case that there are a plurality of photovoltaic groups, the inclination angle of the photovoltaic panel of each photovoltaic group is adjustable, so that the inclination angle of the photovoltaic panels of two adjacent photovoltaic groups is different, and/or the inclination angle of at least two adjacent photovoltaic panels of one photovoltaic group is different, so that the wind load on two adjacent photovoltaic panels or two adjacent photovoltaic groups on the supporting device can offset at least a part of each other;

a driving device connected with the plurality of photovoltaic panels to drive the photovoltaic panels.

2. The pv system according to claim 1, wherein there is one pv group, and the tilt angles of any two adjacent pv panels in the pv group are respectively adjustable, so that the tilt angles of any two adjacent pv panels are different.

3. The photovoltaic system of claim 1, wherein the plurality of photovoltaic groups are spaced apart along a second direction, the second direction being perpendicular to the first direction.

4. The photovoltaic system of claim 3, wherein the tilt angles of any two adjacent photovoltaic panels of the photovoltaic group are adjustable, respectively, such that the tilt angles of any two adjacent photovoltaic panels are different.

5. The photovoltaic system of claim 1, wherein the support device comprises:

at least two support frames, wherein the at least two support frames are arranged along the first direction at intervals;

the flexible connection piece, flexible connection piece follows the first direction extends, flexible connection piece's both ends and at least two the support frame is connected, the photovoltaic board is located flexible connection piece.

6. The photovoltaic system of claim 5, wherein the flexible connector is a tension cable to which a pre-tension is applied, the support device further comprising:

the anti twist beam, the anti twist beam is rotationally located around the axis that extends along first direction the flexonics spare, the photovoltaic board is located the anti twist beam.

7. The photovoltaic system of claim 6, wherein the number of the photovoltaic groups is one, the number of the torsion beams is plural, and the plurality of photovoltaic panels of one photovoltaic group are sequentially spaced apart from each other and disposed on the corresponding torsion beam.

8. The pv system of claim 6, wherein said pv groups are a plurality, each said pv group having one said torsion beam, and a plurality of said pv panels of each said pv group having one said torsion beam.

9. The photovoltaic system of claim 6, wherein the photovoltaic groups are a plurality of photovoltaic groups, each photovoltaic group is provided with a plurality of torsion beams, and the plurality of photovoltaic panels of each photovoltaic group are sequentially spaced apart from the corresponding torsion beams.

10. Method for tilt control of a photovoltaic system according to any one of claims 1 to 9, characterized in that it comprises the following steps:

monitoring the wind direction and the wind speed received by the photovoltaic system;

monitoring the incident angle of sunlight;

and adjusting the inclination angles of two adjacent photovoltaic panels of the photovoltaic system to be different and/or adjusting the inclination angles of the photovoltaic panels of two adjacent photovoltaic groups of the photovoltaic system to be different according to the monitored sunlight incidence angle, the wind direction and the wind speed.

11. The method of claim 10, further comprising:

setting a plurality of extreme wind working conditions, wherein each extreme wind working condition comprises a set included angle and a set wind speed, and the set included angle is an included angle formed by a wind direction and the first direction;

when the monitored wind speed is larger than the set wind speed under a certain extreme wind working condition, and the monitored included angle between the wind power direction and the first direction is smaller than the set included angle under the certain extreme wind working condition, adjusting the inclination angles of two adjacent photovoltaic panels of the photovoltaic system to be different;

and when the monitored wind speed and the monitored included angle between the wind power direction and the first direction do not meet any limit wind working condition, adjusting the inclination angle of the photovoltaic panel according to the sunlight incident angle.

12. The method according to claim 11, wherein the angle of inclination of two adjacent photovoltaic panels of the photovoltaic system, or of two adjacent photovoltaic groups of the photovoltaic system, is in the range of 10 ° -15 ° when any of the extreme wind conditions is met.