Active wind resistance response analysis and flexibility adjustment method and device for flexible photovoltaic support

Abstract

The invention provides an active wind resistance response analysis and flexibility adjustment method and device for a flexible photovoltaic support, and the method comprises the following steps: S1, collecting the tensile force and vibration acceleration of a steel strand of the flexible photovoltaic support and the overturning angle of a photovoltaic panel in real time, and collecting the wind direction and wind speed information of a photovoltaic power generation area in real time; s2, calculating the flexibility of the flexible photovoltaic support through the collected tension, vibration acceleration and overturning angle information, and generating a local wind-resistant modal matrix and a global wind-resistant modal matrix; s3, according to the wind direction and wind speed information collected in real time, carrying out rapid verification on the local and global wind resistance modal matrixes; and S4, according to a verification result, dynamically adjusting the local or overall flexibility of the flexible photovoltaic support so as to ensure that the wind power value which can be resisted by the local wind resistance mode or the overall wind resistance mode of the flexible photovoltaic support is greater than the current real-time wind power. The flexibility of the flexible photovoltaic support can be dynamically adjusted, the wind resistance of the flexible photovoltaic support is enhanced, and challenges brought by a complex wind field environment are effectively handled.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and particularly to an active wind resistance response analysis and flexibility adjustment method and device for a flexible photovoltaic support. Background Art

[0002] With the improvement of the power generation efficiency and the reduction of the cost of photovoltaic power generation panels, as well as the increasing progress of power transmission and transformation technologies, photovoltaic power generation, as a new form of clean energy, is being developed and utilized on a large scale worldwide. However, in areas with poor terrains such as rugged terrains and swampy ponds, traditional rigid photovoltaic support systems face difficulties in installation and use, which greatly limits the application of photovoltaic power generation.

[0003] Flexible photovoltaic supports are increasingly being promoted and applied in newly signed photovoltaic projects due to their advantages of large span, low cost, and little or no occupation of site. However, as an emerging form of photovoltaic support, the wind resistance ability and self-adjustment and adaptation ability of flexible photovoltaic supports are aspects that need to be focused on in the design and application of flexible photovoltaic supports.

[0004] Currently, in the prior art, there is a lack of real-time monitoring and active adjustment means for the local and global wind resistance responses of flexible photovoltaic supports, making it difficult to effectively cope with the challenges brought by complex wind field environments, which limits the application and promotion of flexible photovoltaic supports in harsh environments.

[0005] Based on the above situation, the present invention proposes an active wind resistance response analysis and flexibility adjustment method and device for a flexible photovoltaic support, which can effectively solve the above problems. Summary of the Invention

[0006] Aiming at the deficiencies in the prior art, the first object of the present invention is to provide an active wind resistance response analysis and flexibility adjustment method for a flexible photovoltaic support. The present invention collects the steel strand tension, vibration, panel angle, and wind speed of the flexible photovoltaic support in real time, dynamically adjusts the flexibility of the flexible photovoltaic support, enhances its wind resistance ability, and effectively copes with the challenges brought by complex wind field environments.

[0007] In a first aspect, an embodiment of the present invention provides an active wind resistance response analysis and flexibility adjustment method for a flexible photovoltaic support, including the following steps:

[0008] S1. Collect the tension of the steel strands, vibration acceleration, and flipping angle of the photovoltaic panel of the flexible photovoltaic support in real time, and simultaneously collect the wind direction and wind speed information at different positions and different heights in the photovoltaic power generation area;

[0009] S2. Calculate the flexibility of the flexible photovoltaic support through the collected tension, vibration acceleration, and flipping angle information, and generate a local wind resistance modal matrix and a global wind resistance modal matrix;

[0010] S3. Rapidly verify the local wind resistance mode matrix and the global wind resistance mode matrix of the photovoltaic power generation field according to the real-time collected wind direction and wind speed information;

[0011] S4. Dynamically adjust the local or overall flexibility of the flexible photovoltaic support according to the verification result of step S3 to ensure that the wind force value that the local wind resistance mode or the global wind resistance mode of the flexible photovoltaic support can resist is greater than the current real-time wind force.

[0012] In one embodiment, in step S4, for the verification result of the local wind resistance mode matrix, it includes:

[0013] Step S4.1: According to the verification result, mark and prompt the wind resistance safe area and the wind resistance dangerous area of the photovoltaic power generation field;

[0014] Step S4.2: According to the marked wind resistance dangerous area, dynamically adjust the local flexibility of this area of the flexible photovoltaic support until the wind force value that the local wind resistance mode of the flexible photovoltaic support in this area can resist is greater than the current real-time wind force.

[0015] In one embodiment, for the wind resistance dangerous area marked in step S4.1, perform dynamic tensioning or relaxation operations on the steel strands of the flexible photovoltaic support in this area until the wind force value that the local wind resistance mode of the flexible photovoltaic support in this area can resist is greater than the current real-time wind force.

[0016] In one embodiment, in step S4, for the verification result of the global wind resistance mode matrix, if the current real-time wind force exceeds the wind force value that the global wind resistance mode of the photovoltaic power generation field can resist, perform dynamic tensioning or relaxation operations on all the steel strands of the flexible photovoltaic support until the wind force value that the global wind resistance mode of the flexible photovoltaic support can resist is greater than the current real-time wind force.

[0017] In one embodiment, the mode early warning center rapidly verifies the local wind resistance mode matrix and the global wind resistance mode matrix according to the real-time collected wind direction and wind speed information; the mode early warning center issues instructions to the flexible photovoltaic supports within the global or local range to command the dynamic adjustment of the local or overall flexibility of the flexible photovoltaic supports.

[0018] In one embodiment, the matrix data acquisition and analyzer real-time collects the tension, vibration acceleration of the steel strands of the flexible photovoltaic support and the flipping angle of the photovoltaic panel, calculates the flexibility of the flexible photovoltaic support, and generates the local wind resistance mode matrix and the global wind resistance mode matrix, and transmits them to the mode early warning center in real time.

[0019] In a second aspect, the second object of the present invention is to provide an active wind resistance response analysis and flexibility adjustment device for a flexible photovoltaic support, including a distributed dynamometer, a distributed accelerometer, and a cable tension rotator arranged on the steel strand of the flexible photovoltaic support, and a distributed deflectometer arranged on the photovoltaic panel. The distributed dynamometer, the distributed accelerometer, and the distributed deflectometer are all signal-connected to a matrix data acquisition and analyzer; a distributed wind direction and wind speed meter is arranged on the wind measurement tower around the photovoltaic power generation area, and the distributed wind direction and wind speed meter and the cable tension rotator are both signal-connected to the modal early warning center; the matrix data acquisition and analyzer and the modal early warning center are signal-connected.

[0020] In one embodiment, the distributed dynamometer and the distributed accelerometer are arranged on the steel strand segment between two supports; the distributed dynamometer is arranged at the end of the steel strand segment between two supports; the distributed accelerometer is arranged in the middle of the steel strand segment between two supports.

[0021] In one embodiment, the cable tension rotator is installed on the steel strand segment between the anchor frame and the support.

[0022] In one embodiment, the distributed deflectometer is installed on the back of the photovoltaic panel.

[0023] The beneficial effects of the active wind resistance response analysis and flexibility adjustment method and device for the flexible photovoltaic support provided by the embodiments of the present invention are as follows:

[0024] 1. The present invention realizes the synchronous real-time acquisition of multiple parameters such as the tension of the steel strand, the vibration acceleration of the steel strand, the flipping angle of the photovoltaic panel, the wind direction and wind speed in the photovoltaic power generation area through the distributed dynamometer, the distributed accelerometer, the distributed deflectometer, and the distributed wind direction and wind speed meter. The collected data is systematically processed by the matrix data acquisition and analyzer, calculates the flexibility of the flexible photovoltaic support in the photovoltaic power generation area, and automatically generates the local wind resistance modal matrix and the global wind resistance modal matrix of the area, providing accurate data support for the wind resistance response analysis.

[0025] 2. In the flexible photovoltaic support device of the present invention, the cable tension rotator and the modal early warning center form an efficient real-time feedback adjustment mechanism. The modal early warning center dynamically issues instructions to the cable tension rotator according to the real-time collected wind direction and wind speed information and the verification results of the wind resistance modal matrix. The cable tension rotator adjusts the tensile force of the steel strand, thereby realizing the dynamic adjustment of the local or overall flexibility of the flexible photovoltaic support. This mechanism can ensure that under extreme weather conditions, the wind force value that the local or global wind resistance mode of the flexible photovoltaic support can resist is always greater than the current real-time wind force, effectively guaranteeing the safe and stable operation of the photovoltaic power generation area. In addition, the modal early warning center can also mark and prompt the wind resistance safe area and dangerous area of the area, and perform precise adjustment for the dangerous area, further improving the wind resistance ability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 FIG. is a schematic structural diagram of an active wind resistance response analysis and flexibility adjustment device for a flexible photovoltaic support provided by an embodiment of the present invention.

[0028] Reference numerals: 1 - support; 2 - steel strand; 3 - anchor frame; 4 - photovoltaic panel; 5 - cable tension rotator; 6 - distributed dynamometer; 7 - distributed accelerometer; 8 - distributed deflectometer; 9 - distributed wind direction and wind speed meter; 10 - matrix data acquisition and analyzer; 11 - modal warning center; 12 - steel strand segment between two supports; 13 - steel strand segment between the anchor frame and the support. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following describes the preferred implementation solutions of the present invention in combination with specific embodiments. However, it should be understood that the drawings are only for illustrative purposes and cannot be construed as a limitation to the present invention; for better illustration of this embodiment, some components in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as a limitation to the present invention.

[0030] The following further describes the present invention in combination with the drawings and embodiments, but it is not used as a basis for limiting the present invention.

[0031] The active wind resistance response analysis and flexibility adjustment method for a flexible photovoltaic support includes the following steps:

[0032] S1. Real-time collect the tension, vibration acceleration of the steel strand 2 of the flexible photovoltaic support, and the flipping angle of the photovoltaic panel 4, and at the same time, real-time collect the wind direction and wind speed information at different positions and different heights in the photovoltaic power generation area.

[0033] S2. Calculate the flexibility of the flexible photovoltaic support based on the collected tension, vibration acceleration, and flipping angle information, and generate a local wind resistance modal matrix and a global wind resistance modal matrix.

[0034] S3. Rapidly verify the local and global wind - resistance modal matrices of the photovoltaic power generation area according to the wind direction and wind speed information collected in real - time;

[0035] S4. According to the verification results of step S3, dynamically adjust the local or overall flexibility of the flexible photovoltaic support to ensure that the wind - resistance value that the local or global wind - resistance mode of the flexible photovoltaic support can resist is greater than the current real - time wind force.

[0036] In the said step S4, for the verification results of the local wind - resistance modal matrix, it includes:

[0037] Step S4.1: According to the verification results, mark and prompt the wind - resistance safe area and the wind - resistance dangerous area of the photovoltaic power generation area;

[0038] Step S4.2: According to the marked wind - resistance dangerous area, dynamically adjust the local flexibility of the flexible photovoltaic support in this area until the wind - resistance value that the local wind - resistance mode of the flexible photovoltaic support in this area can resist is greater than the current real - time wind force.

[0039] In the said step S4.2, the wind - resistance safe area means that the current wind force does not exceed the wind - resistance value that the local wind - resistance mode of the flexible photovoltaic support can resist, and the wind - resistance dangerous area means that the current wind force exceeds the wind - resistance value that the local wind - resistance mode of the flexible photovoltaic support can resist.

[0040] For the wind - resistance dangerous area marked in step S4.1, perform dynamic tensioning or relaxation operations on the steel strands 2 of the flexible photovoltaic support in this area until the wind - resistance value that the local wind - resistance mode of the flexible photovoltaic support in this area can resist is greater than the current real - time wind force.

[0041] In the said step S4, for the verification results of the global wind - resistance modal matrix, if the current real - time wind force exceeds the wind - resistance value that the global wind - resistance mode of the photovoltaic power generation area can resist, perform dynamic tensioning or relaxation operations on all the steel strands 2 of the flexible photovoltaic support until the wind - resistance value that the global wind - resistance mode of the flexible photovoltaic support can resist is greater than the current real - time wind force.

[0042] The modal warning center 11 rapidly verifies the local and global wind - resistance modal matrices according to the wind direction and wind speed information collected in real - time; the modal warning center 11 issues instructions to the flexible photovoltaic supports within the global or local range to command the dynamic adjustment of the local or overall flexibility of the flexible photovoltaic supports.

[0043] The matrix - type data acquisition and analyzer 10 real - time collects the tension, vibration acceleration of the steel strands 2 of the flexible photovoltaic support and the flipping angle of the photovoltaic panel 4, calculates the flexibility of the flexible photovoltaic support, and generates the local and global wind - resistance modal matrices, and transmits them to the modal warning center 11 in real - time.

[0044] AsFigure 1 As shown, the present invention also provides an active wind-resistant response analysis and flexibility adjustment device for a flexible photovoltaic support, including a distributed dynamometer 6, a distributed accelerometer 7 and a cable force rotator 5 arranged on the steel strand 2 of the flexible photovoltaic support, and a distributed deflectometer 8 arranged on the photovoltaic panel 4, the distributed dynamometer 6, the distributed accelerometer 7 and the distributed deflectometer 8 are all connected to the matrix data acquisition and analyzer 10 by signal; distributed wind direction and anemometers 9 are arranged on the wind measurement towers around the photovoltaic power generation area, which are used to measure the wind direction and wind speed information at different positions and heights in the photovoltaic power generation area, the distributed wind direction and anemometer 9 and the cable force rotator 5 are all connected to the modal warning center 11 by signal; the matrix data acquisition and analyzer 10 is connected to the modal warning center 11 by signal.

[0045] The matrix data acquisition and analysis instrument 10 collects the tension, vibration acceleration and flip angle information measured by the distributed dynamometer 6, the distributed accelerometer 7 and the distributed deflectometer 8 in real time through the built-in wireless signal receiving module.

[0046] The distributed dynamometer 6 and distributed accelerometer 7 are arranged on the steel strand segment 12 between the two supports. The distributed dynamometer 6 is arranged at the end of the steel strand segment 12 between the two supports to measure the tension borne by the steel strand 2; the distributed accelerometer 7 is arranged in the middle of the steel strand segment 12 between the two supports to measure the vibration acceleration of the steel strand there.

[0047] The cable force rotator 5 is installed on the steel strand segment 13 between the anchor frame and the bracket. The cable force rotator 5 has built-in electronic components, which can receive wireless signal instructions sent by the modal warning center 11 and adjust the tension of the steel strand 2 by rotating the built-in capstan.

[0048] The distributed deflectometer 8 is installed on the back of the photovoltaic panel 4 and is used to measure the flip angle of the corresponding photovoltaic panel 4 .

[0049] According to the description and drawings of the present invention, those skilled in the art can easily manufacture or use the active wind resistance response analysis and flexibility adjustment method and device of the flexible photovoltaic bracket of the present invention, and can produce the positive effects recorded in the present invention.

[0050] Unless otherwise specified, in the present invention, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial direction", "radial direction", "circumferential direction", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms used to describe the orientation or positional relationship in the present invention are only for illustrative purposes and should not be construed as a limitation to the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood by combining the drawings and according to specific circumstances.

[0051] Unless otherwise clearly specified and defined, in the present invention, if there are terms such as "arranged", "connected" and "coupled", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The above are only the preferred embodiments of the present invention, and do not impose any formal limitations on the present invention. Any simple modifications and equivalent changes made to the above embodiments based on the technical essence of the present invention all fall within the protection scope of the present invention.

Claims

1. Active wind resistance response analysis and flexibility adjustment method of flexible photovoltaic support, characterized in that: It includes the following steps: S1. Collect the tension, vibration acceleration of the steel strand of the flexible photovoltaic support and the flipping angle of the photovoltaic panel in real time, and at the same time collect the wind direction and wind speed information at different positions and heights in the photovoltaic power generation area in real time; S2. Calculate the flexibility of the flexible photovoltaic support based on the collected tension, vibration acceleration and flipping angle information, and generate a local wind resistance modal matrix and a global wind resistance modal matrix; S3. Quickly verify the local wind resistance modal matrix and the global wind resistance modal matrix of the photovoltaic power generation area according to the real-time collected wind direction and wind speed information; S4. According to the verification result of step S3, dynamically adjust the local or overall flexibility of the flexible photovoltaic support to ensure that the wind force value that the local wind resistance mode or the global wind resistance mode of the flexible photovoltaic support can resist is greater than the current real-time wind force.

2. The active wind resistance response analysis and flexibility adjustment method of the flexible photovoltaic support according to claim 1, characterized in that: In step S4, for the verification result of the local wind resistance modal matrix, it includes: Step S4.1: According to the verification result, mark and prompt the wind resistance safe area and the wind resistance dangerous area in the photovoltaic power generation area; Step S4.2: According to the marked wind resistance dangerous area, dynamically adjust the local flexibility of this area of the flexible photovoltaic support until the wind force value that the local wind resistance mode of the flexible photovoltaic support in this area can resist is greater than the current real-time wind force.

3. The active wind resistance response analysis and flexibility adjustment method of the flexible photovoltaic support according to claim 2, characterized in that: For the wind resistance dangerous area marked in step S4.1, perform dynamic tensioning or relaxation operations on the steel strands of the flexible photovoltaic support in this area until the wind force value that the local wind resistance mode of the flexible photovoltaic support in this area can resist is greater than the current real-time wind force.

4. The active wind resistance response analysis and flexibility adjustment method of the flexible photovoltaic support according to claim 1, characterized in that: In step S4, for the verification result of the global wind resistance modal matrix, if the current real-time wind force exceeds the wind force value that the global wind resistance mode of the photovoltaic power generation area can resist, perform dynamic tensioning or relaxation operations on all the steel strands of the flexible photovoltaic support until the wind force value that the global wind resistance mode of the flexible photovoltaic support can resist is greater than the current real-time wind force.

5. The active wind resistance response analysis and flexibility adjustment method of the flexible photovoltaic support according to claim 1, characterized in that: The modal warning center quickly verifies the local wind resistance modal matrix and the global wind resistance modal matrix according to the real-time collected wind direction and wind speed information; the modal warning center issues instructions to the flexible photovoltaic supports within the global or local range to command the dynamic adjustment of the local or overall flexibility of the flexible photovoltaic supports.

6. The active wind resistance response analysis and flexibility adjustment method of the flexible photovoltaic support according to claim 5, characterized in that: The matrix data acquisition and analyzer collects the tension, vibration acceleration of the steel strand of the flexible photovoltaic support and the flipping angle of the photovoltaic panel in real time, calculates the flexibility of the flexible photovoltaic support, generates a local wind resistance modal matrix and a global wind resistance modal matrix, and transmits them to the modal warning center in real time.

7. Active wind resistance response analysis and flexibility adjustment device of flexible photovoltaic support, characterized in that, It includes a distributed dynamometer, a distributed accelerometer and a cable force rotator arranged on the steel strand of the flexible photovoltaic support, and a distributed deflectometer arranged on the photovoltaic panel. The distributed dynamometer, the distributed accelerometer and the distributed deflectometer are all connected to the matrix data acquisition and analyzer by signals; distributed wind direction and wind speed meters are arranged on the wind measurement towers around the photovoltaic power generation area. The distributed wind direction and wind speed meters and the cable force rotator are all connected to the modal warning center by signals; the matrix data acquisition and analyzer and the modal warning center are connected by signals.

8. The active wind resistance response analysis and flexibility adjustment device for the flexible photovoltaic support according to claim 7, characterized in that: The distributed dynamometers and distributed accelerometers are arranged on the strand segment between two brackets; the distributed dynamometers are arranged at the ends of the strand segment between two brackets; the distributed accelerometers are arranged in the middle of the strand segment between two brackets.

9. The active wind resistance response analysis and flexibility adjustment device for the flexible photovoltaic support according to claim 7, characterized in that: The cable tension rotator is installed on the strand segment between the anchor bracket and the bracket.

10. The active wind resistance response analysis and flexibility adjustment device for the flexible photovoltaic support according to claim 7, characterized in that: The distributed deflectometer is installed on the back of the photovoltaic panel.

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