CN214480417U - Parasitic power generation unit of photovoltaic power station - Google Patents

Abstract

A parasitic power generation unit of a photovoltaic power station comprises a folding wing support attached to a main body support, a photovoltaic component plate is arranged at the top of the main body support, the folding wing support comprises a connection beam fixedly connected with beams which are in the same direction and parallel to each other in the main body support, a rotating shaft support is arranged at one end, far away from the main body support, of the connection beam, a rotating shaft is arranged in the rotating shaft support, a light irradiation receiving plate is fixed on the rotating shaft, the rotating shaft and the light irradiation receiving plate are driven to rotate by a rotation driving mechanism, when the light irradiation receiving plate rotates to be flush with or at a certain angle with the photovoltaic component plate, the light irradiation receiving plate is unfolded for power generation, unusable light energy is converted into usable energy, the capacity of the photovoltaic power station can be greatly increased under the condition that the land area is not increased or is rarely increased, and when the light irradiation receiving plate rotates to be folded under the photovoltaic component plate, wind shielding is realized, the method can avoid the strong wind weather in real time and quickly enter a wind-sheltering state.

Description

Parasitic power generation unit of photovoltaic power station

Technical Field

The utility model relates to a photovoltaic power generation technical field especially relates to a photovoltaic power plant's parasitic power generation unit.

Background

The construction of a photovoltaic power station is started in large scale in 2010 in China, the construction enters a stage of canceling national subsidies and flat price Internet surfing in 2018, and 2021 is a first year of comprehensive flat price Internet surfing. In 23/10/2020, the "photovoltaic power generation system performance standard" (NB/T10394) is approved by the national energy agency, and the standard releases the limit of the capacity and proportion, and recommends: the optimal volume ratio of the first-class light irradiation resource area is about 1.2, the optimal volume ratio of the second-class light irradiation resource area is about 1.4, and the optimal volume ratio of the third-class light irradiation resource area can reach about 1.8. This will be powerful to promote the progress of the national photovoltaic power generation on line at a flat price.

Therefore, a large number of old power stations urgently need to be subjected to technical transformation of the capacity of the super-assembling machine to improve the power generation capacity, and a large number of newly-built power stations also need to be designed and built according to the concept of the capacity of the super-assembling machine to improve the power generation capacity. Old power stations are limited by original land areas and support structure forms, and large-scale increase of installed capacity is limited. And the large-scale increase of installed capacity of newly built power stations also requires a large amount of land area to be increased. So far, the accumulation of the photovoltaic installed capacity of China exceeds 250GWP, the consumed land area exceeds 4000 square km, the installed capacity is newly increased to exceed 1000GWP in 10 years in the future, and the land area of more than 2 ten thousand square km is consumed.

The design arrangement of the existing photovoltaic array has a large space area between clear distances, and light irradiation resources corresponding to the part of land area cannot be effectively utilized generally, so that the design arrangement of the existing photovoltaic array is significant if the light irradiation resources can be developed and utilized. Therefore, it is necessary to find a technical scheme that the method does not need to greatly increase the land area, explores and utilizes the light irradiation resources between the photovoltaic array clear distances, can realize large-scale increase of the direct current side installed capacity, greatly improves the alternating current side generated energy, and increases the investment cost.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model provides an increase photovoltaic power plant installed capacity's by a wide margin photovoltaic power plant's parasitic power generation unit under the condition that does not increase or increase land area very little.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a parasitic power generation unit of photovoltaic power plant, is including adhering to the folding wing support on the main part support, the main part support top is equipped with the photovoltaic module board, the folding wing support include with roof beam fixed connection's of equidirectional and parallel connection roof beam in the main part support, the roof beam of plugging into is kept away from the one end of main part support is equipped with the pivot support, be equipped with the pivot in the pivot support, be fixed with the light irradiation receiver panel in the pivot, the pivot reaches the light irradiation receiver panel is rotatory by the rotation driving mechanism drive, works as the light irradiation receiver panel rotate to with photovoltaic module board parallel and level or expand the electricity generation when being certain angle, work as the light irradiation receiver panel is rotatory to draw in when the photovoltaic module board below and keep away from the wind.

Furthermore, a bushing is arranged in the rotating shaft support, the bushing is fixed in the rotating shaft support by a semicircular hoop cover, and the rotating shaft is in movable fit with the bushing so that the rotating shaft is rotated in the rotating shaft support.

Furthermore, each folding wing support is provided with at least two rotating shaft supports to support the spatial position and the posture of the rotating shaft.

Further, the connection beam of the folding wing bracket and the beam of the main body bracket are integrally arranged.

Furthermore, the rotary driving mechanism comprises a winch fixed on the main body support and a fixed pulley fixed on the rotating shaft, the fixed pulley is connected with the winch through a steel wire rope, the steel wire rope is wound on the fixed pulley for at least one and a half circles, at least one point of the steel wire rope and the fixed pulley is fixed, and the winch drives the steel wire rope to drag the rotating shaft to rotate so as to drag the light irradiation receiving plate to rotate.

Further, the light irradiation receiving plate is a photovoltaic module plate or a glass mirror reflection plate.

Further, the main body support is a fixed-inclination support or a tracking support, when the folding wing support is attached to the fixed-inclination support, the light irradiation receiving panel is driven by the rotary driving mechanism to track the movement change of the sun at an optimal inclination for power generation, and when the folding wing support is attached to the tracking support, the folding wing support generates power as the tracking support tracks the movement of the sun.

Further, it trails the support for flat single-axis tracking support or oblique single-axis tracking support or biax, fixed inclination support trail the support with the folding wing support makes up into four kinds of new supporting structure systems, fixed inclination support and folding wing support's combination, flat single-axis tracking support and folding wing support's combination, oblique single-axis tracking support and folding wing support's combination and the combination of biax tracking support and folding wing support promptly.

Further, when the main body support is a fixed inclination angle support, the light irradiation receiving plate is a photovoltaic module plate, and after the folding wing support is unfolded, the change of the movement of the sun is tracked by adjusting the inclination angle of the light irradiation receiving plate in the posture of the optimal inclination angle, so that the power generation capacity is improved.

The utility model has the advantages that:

the folding wing support is attached to the main body support, the light irradiation receiving plate on the folding wing support is driven to rotate by the rotary driving mechanism, the light irradiation receiving plate rotates to be parallel to and level with the photovoltaic assembly plate of the main body support or is unfolded to generate electricity at a certain angle, unavailable light energy is converted into available energy, the installed capacity of a photovoltaic power station can be greatly increased under the condition that the land area is not increased or is rarely increased, the light irradiation receiving plate is folded to avoid wind when rotating to the lower side of the photovoltaic assembly plate of the main body support, the windy weather can be avoided in real time, and the light irradiation receiving plate can quickly enter a wind-avoiding state. The utility model discloses parasitic power generation unit simple structure, it is safe high-efficient, reduction land usable floor area by a wide margin, reduction support by a wide margin consumes the steel volume, promotes photovoltaic power plant installed capacity by a wide margin, and investment cost is lower, is favorable to reducing the leveling degree cost of electricity.

Drawings

FIG. 1 is a schematic diagram of a tracking principle of a photovoltaic power station flat single-axis tracking bracket power generation unit;

FIG. 2 is a schematic plan view of the combination of the parasitic power generation unit and the power generation unit of the flat single-axis tracking bracket of the present invention;

fig. 3 is a plan combination view of the folding wing bracket and the flat single-axis tracking bracket of the present invention;

fig. 4 is a plane exploded view of the folding wing bracket and the flat single-axis tracking bracket of the present invention;

FIG. 5 is a schematic view of the structure of the main body support of FIG. 4;

FIG. 6 is a front view of FIG. 3;

FIG. 7 is an exploded view of the folding wing bracket of FIG. 6;

FIG. 8 is a schematic view of the connection between the light irradiation receiving plate and the rotating shaft in the parasitic power generation unit of the present invention;

fig. 9 is a schematic structural view of a rotation driving mechanism in the parasitic power generation unit of the present invention;

fig. 10 shows the movement process of a folding wing bracket following a flat single-axis tracking bracket according to an embodiment of the present invention;

FIG. 11 is a view showing the wind shielding movement of the light irradiation receiving panel of a foldable wing bracket according to an embodiment of the present invention;

fig. 12 is a diagram illustrating a state where the light radiation receiving panel is flush with the photovoltaic module panel when the two-fold wing bracket according to the embodiment of the present invention is attached to the fixed-inclination bracket;

FIG. 13 is a schematic view of a second embodiment of the present invention showing an increased tilt angle of a light receiving panel;

FIG. 14 is a schematic view of a second embodiment of the present invention showing a reduced tilt angle of a light receiving panel;

FIG. 15 is a schematic view showing a vertical state of a second light irradiation receiving panel according to an embodiment of the present invention;

fig. 16 is a schematic view of the two-folded wing bracket according to the embodiment of the present invention being folded to shield wind;

fig. 17 is a schematic view of the mounting position of the three-folding-wing bracket attached to two sides of the oblique single-axis tracking bracket according to the embodiment of the present invention;

fig. 18 is a schematic view of the installation position of the four-fold wing bracket attached to the periphery of the dual-axis tracking bracket according to the embodiment of the present invention;

fig. 19 is a schematic structural view of a light irradiation receiving plate in a five-folded wing bracket according to the embodiment of the present invention, which adopts a mirror reflection plate;

fig. 20 is a wind-shielding movement process of the glass mirror reflection plate in the five-folding-wing bracket according to the embodiment of the present invention;

in the figure, 1-main body support, 2-upright post, 3-rotating shaft longitudinal beam, 4-inclined strut, 5-beam, 6-photovoltaic module plate, 7-folding wing support, 8-connecting beam, 9-rotating shaft support, 10-rotating shaft, 11-lining, 12-semicircular hoop cover, 13-light irradiation receiving plate, 14-connecting piece, 15-winch, 16-fixed pulley and 17-steel wire rope.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Fig. 1 is a schematic diagram of a tracking principle of a power generation unit of a flat single-axis tracking support of a photovoltaic power station, and the flat single-axis tracking support can rotate from east to west following the rising or falling of the sun, so that the inclination angle of a photovoltaic module plate on the flat single-axis tracking support is changed, and the photovoltaic module plate of the flat single-axis tracking support receives light energy to the maximum extent and converts the light energy into electric energy.

As shown in fig. 2 to 4, the present invention provides a parasitic power generation unit of a photovoltaic power station, which comprises a folding wing bracket 7 attached to a main body bracket 1, wherein the folding wing bracket 7 is attached to both sides of the main body bracket 1 in the present embodiment, the folding wing bracket 7 can be attached to one side of the main body bracket 1 in another embodiment, and the folding wing bracket 7 can be attached to the periphery of the main body bracket 1 in other embodiments.

As shown in fig. 3 and 5, the main body support 1 includes a vertical column 2 installed on the ground, a rotating shaft longitudinal beam 3 is arranged at the top of the vertical column 2, a transverse beam 5 is installed on the rotating shaft longitudinal beam 3, a photovoltaic module plate 6 for generating electricity is arranged at the top of the beam 5, and an inclined strut 4 is arranged below the beam 5 and used for supporting the reinforcing beam 5.

As shown in fig. 3 and 6 to 8, the folding wing support 7 includes a connection beam 8 fixedly connected to the beam 5 in the main support 1 in the same direction and parallel to each other, a rotation shaft support 9 is disposed at an end of the connection beam 8 away from the main support 1, a rotation shaft 10 is disposed in the rotation shaft support 9, a light irradiation receiving plate 13 is fixed to the rotation shaft 10, the rotation shaft 10 and the light irradiation receiving plate 13 are driven to rotate by a rotation driving mechanism, the light irradiation receiving plate 13 is unfolded to generate power when rotated to be flush with or at a certain angle to the photovoltaic module plate 6, and the light irradiation receiving plate 13 is folded to avoid wind when rotated to be below the photovoltaic module plate 6. The connection beam 8 is technically retrofitted to old power stations, and in other embodiments, the connection beam 8 may be provided integrally with the beam 5 of the main body frame 1 if the folding wing frame 7 is to be used in the design and construction of a newly built power station.

A bush 11 is arranged in the rotating shaft support 9, the bush 11 is fixed on the rotating shaft support 9 by a semicircular hoop cover 12, and the rotating shaft 10 is movably matched with the bush 11 so that the rotating shaft 10 can rotate in the bush 11 of the rotating shaft support 9. Preferably, each folding wing bracket 7 is provided with at least two or more rotating shaft supports 9 for supporting the spatial position and posture of the rotating shaft 10. The shaft 10 is preferably made of steel pipe material, and at least two axial positioning rings are fixed on the shaft 10 to limit excessive axial displacement of the shaft 10.

As shown in fig. 8, the light irradiation receiving plate 13 is fixedly connected to the rotary shaft 10 by a connecting member 14 so that the light irradiation receiving plate 13 and the rotary shaft 10 can be rotated in synchronization. The function of the light irradiation receiving plate 13 is to convert unusable light energy into usable energy. Preferably, the light irradiation receiving plate 13 is a photovoltaic module plate or a specular reflection plate, and the surface of the specular reflection plate may be glass, stainless steel, an organic coating, or the like. When the light irradiation receiving plate 13 is a photovoltaic module plate, direct power generation is performed, and when the light irradiation receiving plate 13 is a specular reflection plate (see fig. 19 and 20), indirect power generation is performed by transferring the light irradiation after reception and reflection to the adjacent photovoltaic module plate 6.

As shown in fig. 9, the rotation driving mechanism includes a winch 15 fixed on the main body frame 1 and a fixed pulley 16 fixed on the rotating shaft 10, the fixed pulley 16 is connected with the winch 15 through a steel wire rope 17, the steel wire rope 17 is wound around the fixed pulley 16 for at least one and a half turns to prevent locking, at least one point of the steel wire rope 17 and the fixed pulley 16 is fixed, and the winch 15 drives the steel wire rope 17 to drag the rotating shaft 10 to rotate, thereby dragging the light radiation receiving plate 13 to rotate. Of course, in other embodiments, the rotation driving mechanism is not limited to the wire rope 17 and the winch 15, and other driving mechanisms may be adopted, such as chain transmission and synchronous belt transmission, or a worm gear reducer may be directly adopted to directly drag the steel pipe rotating shaft to rotate, so long as the purposes of controlling and driving the rotating shaft 10 to rotate and stop positioning can be achieved.

Preferably, the main body support 1 is a fixed-inclination support or a tracking support, and when the folding wing support 7 is attached to the fixed-inclination support, the light irradiation receiving panel 13 is driven by the rotary driving mechanism to track the movement change of the sun at an optimum inclination to change the inclination for power generation, and when the folding wing support 7 is attached to the tracking support, the folding wing support 7 generates power as the tracking support tracks the movement of the sun.

The main body support 1 is a fixed inclination angle support or a tracking support, the tracking support is a flat single-axis tracking support or an inclined single-axis tracking support or a double-axis tracking support, and the fixed inclination angle support, the tracking support and the folding wing support 7 are combined into four new support structure systems, namely the combination of the fixed inclination angle support and the folding wing support 7, the combination of the flat single-axis tracking support and the folding wing support 7, the combination of the inclined single-axis tracking support and the folding wing support 7 and the combination of the double-axis tracking support and the folding wing support 7. The structure of these main body brackets 1 is well known in the art and will not be described in detail herein. When the main body support 1 is a support with a fixed inclination angle, the light irradiation receiving plate 13 only can be a photovoltaic module plate, and after the folding wing support 7 is unfolded, the change of the movement of the sun is tracked by adjusting the inclination angle of the light irradiation receiving plate 13 in the posture of the optimal inclination angle, so that the power generation capacity is improved. When the subject support 1 is a tracking type support, the light irradiation receiving plate 13 may be either a photovoltaic module plate or a glass mirror reflection plate.

The power generation process of the traditional photovoltaic power station is explained by taking the main body support as a flat single-axis tracking support as an example, and the process that the flat single-axis tracking support in the conventional sense tracks the movement of the sun is as follows:

1. the horizontal single-shaft tracking bracket is in a horizontal wind-sheltering standby state at night;

2. in the early morning, when the rising height angle of the sun from the east is gradually increased, the horizontal single-shaft tracking support starts from a horizontal state, the rotating inclination angle is gradually increased from the west to the east, and the tracking process is stopped when the sun rotates to the maximum inclination angle of the east side, is opposite to the moving direction of the sun and is called as the early morning reverse tracking process, and the process is not allowed to be blocked by the shadow of the east side support;

3. then, the horizontal single-axis tracking support tracks the movement of the sun from east to west and rotates, and in the process, the array plate surface of the horizontal single-axis tracking support has at least one dimensional axis which is perpendicular to the sunlight;

4. when the altitude of the sun is gradually reduced in the west direction, the rotating inclination angle of the flat single-axis tracking support is gradually increased from east to west, and the rotation is stopped when the inclination angle is changed to the maximum inclination angle of the west side, at least one dimension axis of the array plate surface of the flat single-axis tracking support is perpendicular to sunlight in the process;

5. then, the sun lands on the west, the inclination angle of the horizontal single-axis tracking support is gradually reduced from the west to the east, the horizontal single-axis tracking support stops when the horizontal single-axis tracking support is turned to the horizontal state, the horizontal wind-sheltering standby state is entered at night, the tracking process is opposite to the moving direction of the sun, the process is called as the late evening reverse tracking process, and shadow shielding of the west-side support is not allowed.

The utility model discloses on being attached to the main part support with folding wing support, not only need control the main part support, still need insert the local control motion process of folding wing support in real time, just unified tracking sun motion, and the at utmost generates electricity.

Example one

As shown in fig. 10 and 11, the main body support 1 is a flat single-axis tracking support, and the light irradiation receiving plate 13 will follow the flat single-axis tracking support together. Figure 10 shows the movement of the folding wing support 7 following a flat single axis tracking support. The process is as follows:

1. at night, the tracking support is in a horizontal posture, the folding wing support 7 is in a furled state, and the light irradiation receiving plate 13 is positioned below the photovoltaic module plate 6;

2. in the early morning, the sun moves from east to west, the tracking support starts to rotate to east, and stops rotating to the maximum inclination angle towards east, which is a reverse tracking process, and shadow shielding of the east tracking support is not allowed in the process;

3. unfolding the east-side folding wing support 7, rotating the light irradiation receiving plate 13 on the east side from the lower part of the photovoltaic module plate 6 to the upper side, wherein the east-side folding wing support 7 is positioned in the shadow of the adjacent east-side tracking support, the tracking support starts to rotate towards the west to track the movement of the sun, which is a positive tracking process, and the folding wing support 7 rotates towards the west along with the tracking support and is separated from the shadow influence of the adjacent east-side tracking support;

4. unfolding the west folding wing bracket 7, enabling the shadow of the west folding wing bracket 7 to shield the east folding wing bracket 7 of the adjacent west tracking bracket, continuously rotating the tracking bracket to the west, eliminating the influence of the west folding wing bracket 7 on the shadow of the adjacent west tracking bracket, and continuously performing the positive tracking process;

5. at noon, the tracking bracket is in a horizontal state, continues to rotate towards the west, and continues to track;

6. in the afternoon, when the shadow of the east folding wing bracket 7 blocks the west folding wing bracket 7 of the adjacent east tracking bracket, the east folding wing bracket 7 is folded, the tracking bracket continues to rotate towards the west, and the positive tracking process continues;

7. then, after the west folding wing bracket 7 is shielded by the shadow of the adjacent west tracking bracket, the west folding wing bracket 7 is folded, the tracking bracket stops when rotating to the west maximum inclination angle, the positive tracking process is finished, and the reverse tracking process is started;

8. in the evening, the sun continues moving towards the west until the sun falls down, the tracking bracket stops when rotating towards the east to the horizontal state, the reverse tracking process is finished, and the night wind-sheltering standby state is entered.

Fig. 11 shows the course of the movement of the light radiation receiving panel 13 of the folded wing support 7 against the wind, in this embodiment, the light radiation receiving panel 13 is a photovoltaic module panel. When the folding wing support 7 is sheltered from wind, the rotary driving mechanism drives the light irradiation receiving plate 13 to rotate, so that the light irradiation receiving plate 13 and the photovoltaic component plate 6 of the main body support 1 are in a parallel state, rotate to be vertical to the photovoltaic component plate 6, rotate to the lower part of the photovoltaic component plate 6 and are parallel to the photovoltaic component plate 6, and are folded below the main body support 1.

When the folding wing support 7 is applied specifically, the folding wing support is attached to the flat single-axis tracking support and moves along with the flat single-axis tracking support. But the wind load bearing capacity is preferably controlled according to one third of the bearing capacity of the flat single-shaft tracking support, for example, the safe working wind speed of the flat single-shaft tracking support is 20 meters/s, the corresponding wind pressure is 25 kg/square meter, the safe working wind speed of the folding wing support 7 is 11.3 meters/s, and the corresponding wind pressure is 8 kg/square meter.

In the first embodiment, when the wind pressure is 8 kg/square meter, that is, the wind speed reaches the beginning of the 6-level strong wind interval, the folded wing support 7 immediately enters the self-protection wind-shielding state, that is, the light radiation receiving plate 13 of the folded wing support 7 rotates to the position below the photovoltaic module plate 6 of the flat single-axis tracking support. When the wind pressure is 25 kg/square meter, namely the wind speed reaches the top of a large wind interval of 8 grades, the flat single-shaft tracking support immediately enters a self-protection horizontal wind-shielding state.

It is also important to control that when the folding wing support 7 is unfolded, it is intolerably acceptable to add additional shadow-blocking effect to the circumferentially adjacent arrays of photovoltaic module panels 6, so that the daily daytime unfolding of the folding wing support 7 receives light radiation in less time than the main body support 1. For the above reasons, when the folding wing bracket 7 is used for installing the photovoltaic module board, the single Wp power generation capacity is reduced by about 10% according to annual statistics.

When the folding wing bracket 7 of the embodiment tracks the movement of the sun along with the tracking bracket, the folding wing bracket can be expanded outwards to receive light irradiation and folded inwards to avoid the heavy wind load and the shadow effect of the adjacent array in real time according to the function requirement, the scene condition and the design performance, so that the power generation capacity is improved. The folding wing support 7 is installed on the flat single-axis tracking support to generate electricity, and the area of the photovoltaic module plate can be increased by 100% and above.

Example two

As shown in fig. 12, the light irradiation receiving plate 13 of the folding wing bracket 7 is generally flush with the photovoltaic module panel 6 of the fixed-pitch bracket. Furthermore, the inclination angle of the light irradiation receiving plate 13 can be properly adjusted to track the change of the solar altitude and azimuth angle to improve the power generation capability, and the light irradiation receiving plate can be unfolded and folded in real time according to the functional requirements, the scene conditions and the design performance. The embodiment can not be used for installing a glass mirror reflection plate, and can only be used for installing a photovoltaic module plate. For the same power of the assembly plate, the single-Wp annual power generation of the photovoltaic assembly plate exceeds the single-Wp annual power generation of the fixed-inclination main body bracket. Especially in summer for half a year, the phenomenon is a peculiar phenomenon and has unexpected surprising effect. And meanwhile, according to the functional requirements, scene conditions and design performance, the light irradiation is received in an outward expansion mode and the light irradiation is received in an inward contraction mode in real time, so that the heavy wind load is avoided, and the shadow effect of adjacent arrays is avoided. The folding wing bracket 7 is arranged on the fixed inclination angle bracket to generate electricity, and the area of a photovoltaic module board can be increased by 25% or more at least in an old power station. If the daytime develops prematurely, its additional shadow effect on the heel row occurs only within about 60 days before and after winter solstice, and has no effect during the half-summer season (the middle half-year with summer solstice as the center, the spring equinox to the fall).

As shown in fig. 13, when the shadow of the folding wing bracket 7 has no adverse effect on the rear row, the inclination of the light irradiation receiving plate 13 can be suitably increased during midday hours such as the winter half year (the middle half year with winter solstice as the center, the fall to spring equinox) to increase the power generation amount.

As shown in fig. 14, the inclination of the light irradiation receiving panel 13 may be appropriately decreased during the noon period of the half year in the summer to increase the amount of power generation. In the early morning and evening of spring equinox and fall solar terms, the power generation amount can be increased by appropriately lowering the inclination of the light irradiation receiving panel 13.

As shown in fig. 15, in the early morning and evening of the half-year summer, the light radiation receiving plate 13 is nearly vertical and can receive direct light from the north east and the north west, thereby increasing the power generation amount.

As shown in fig. 16, the wind load of the fixed inclination angle support is generally designed according to the local basic wind pressure, and the working state of the tracking support is designed according to the wind speed of 20 m/s (corresponding to the wind pressure of 25 kg/square meter). The folding wing support 7 should be controlled according to the initial wind speed of 6 levels, that is, the wind speed of 6 levels (corresponding to wind pressure of 8kg per square meter) should be immediately in a wind-avoiding state, so as to eliminate adverse load effect on the main body support structure.

EXAMPLE III

Fig. 17 is a schematic view showing the mounting position of the flap holder 7 attached to the diagonal single-axis tracking holder, and the flap holder 7 is mounted on both sides of the diagonal single-axis tracking holder. In the present embodiment, the light irradiation receiving plate 13 may be a glass mirror reflection plate, or may be a photovoltaic module plate. For the component boards with the same power, the single-Wp annual power generation amount of the photovoltaic component board is slightly less than that of the oblique single-axis tracking main body support. And meanwhile, according to the functional requirements, scene conditions and design performance, the light irradiation is received in an outward expansion mode and the light irradiation is received in an inward contraction mode in real time, so that the heavy wind load is avoided, and the shadow effect between adjacent arrays is avoided. The embodiment generates electricity by installing the folding wing bracket 7 on the oblique single-axis tracking bracket, and can increase the area of the photovoltaic module board by 45 percent and above.

Example four

As shown in fig. 18, the mounting position of the folding wing bracket 7 to the biaxial tracking bracket is schematically shown, and the folding wing bracket 7 is mounted around the biaxial tracking bracket. In the present embodiment, the light irradiation receiving plate 13 may be a glass mirror reflection plate, or may be a photovoltaic module plate. For the component boards with the same power, the single-Wp annual power generation amount of the photovoltaic component board is slightly less than that of the double-axis tracking main body support. And meanwhile, according to the functional requirements, scene conditions and design performance, the light irradiation is received in an outward expansion mode and the light irradiation is received in an inward contraction mode in real time, so that the heavy wind load is avoided, and the shadow effect between adjacent arrays is avoided. The folding wing support 7 is installed on the double-shaft tracking support to generate electricity, and the area of the photovoltaic module board can be increased by 67% or more.

EXAMPLE five

As shown in fig. 19, the light irradiation receiving plate 13 of the folding wing bracket 7 is a glass mirror reflector, the main body bracket 1 is a flat single-axis tracking bracket, and a schematic diagram of the glass mirror reflector mounted on the flat single-axis tracking bracket is shown, and the principle of tracking the sun movement is the same as that of the folding wing bracket 7 attached to the tracking bracket to follow the sun movement, and is not repeated. In this embodiment, the glass mirror reflector is at an angle to the photovoltaic module panel 6 of the main body support 1.

The glass mirror reflection plates are of a symmetrical structure, when the total area of the glass mirror reflection plates on the two sides is the same as the area of the photovoltaic module plate 6 of the flat single-axis tracking support, and the included angle is 126.43 degrees, the light irradiation intensity received by the photovoltaic module plate on the main body support is improved by about 60%, namely the real-time power generation output power of the photovoltaic module plate is improved by 60%. When the area of the glass mirror reflection plates on the two sides is 2 times of the area of the photovoltaic module plate of the flat single-axis tracking support and the included angle is 120 degrees, the light irradiation intensity received by the photovoltaic module plate on the main body support is improved by 100 percent, namely the real-time power generation output power of the photovoltaic module plate is improved by 100 percent. The combination of the folded wing support 7 and the flat single axis tracking support has evolved to a low power trough concentrating array.

As shown in fig. 20, the glass mirror reflector is folded inward and withdrawn from the power generation process, and during the withdrawal from the power generation process, the glass mirror reflector is first controlled to rotate to a state flush with the photovoltaic module plate 6, and then is folded inward below the photovoltaic module plate 6. And meanwhile, according to the functional requirements, scene conditions and design performance, the light irradiation is received in an outward expansion mode and the light irradiation is received in an inward contraction mode in real time, so that the heavy wind load is avoided, and the shadow effect of adjacent arrays is avoided.

EXAMPLE six

The folded wing support 7 can also be applied to heliostats of tower-type photothermal power stations. In the present embodiment, a high-efficiency mirror is mounted on the folding wing bracket 7. In the time period without shielding between main heliostats in daytime every day, the high-efficiency mirror reflector of the folding wing support 7 is unfolded in real time, and the increased received light irradiation energy is reflected to the collector at the top of the concentrating tower, so that the energy absorbed by the collector at the top of the concentrating tower is improved, and the power generation capacity is greatly improved. And meanwhile, according to the functional requirements, scene conditions and design performance, the light irradiation is received in an outward expansion mode and the light irradiation is received in an inward contraction mode in real time, so that the heavy wind load is avoided, and the shadow effect between adjacent arrays is avoided.

EXAMPLE seven

During daytime running, when 6-level wind is met (the wind speed is 11.3 m/s, the wind pressure is 8kg per square meter), the folding wing support 7 is folded immediately to enter a wind-sheltering state, and when 8-level wind is met (the wind speed is 20 m/s, the wind pressure is 25kg per square meter), the main body support 1 immediately enters a horizontal wind-sheltering state. The main body support 1 and the folding wing support 7 are all in the horizontal wind-shielding standby state at night.

The utility model discloses photovoltaic power plant's parasitic power generation unit, its basic technical thought starting point are trending to the interest and keep away the evil, tend to more receipt solar energy promptly and improve the generated energy to reduce the land consumption rate and reduce the input cost, avoid big wind load to the adverse effect and the destruction of structure, avoid the shadow between the array and shelter from the effect each other.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses folding wing support 7 can be under the prerequisite that does not change current main part support 1 structure, easy attached to current fixed inclination support, fixed adjustable inclination support, flat single-axis tracking support, oblique single-axis tracking support, biax tracking support on, increase photovoltaic power plant installed capacity by a wide margin under the condition that does not increase land area.

(2) The utility model discloses photovoltaic power plant's parasitic power generation unit can evade strong wind weather in real time, gets into the state of keeping out the wind fast, simultaneously can be real-time according to the shadow influence to between the adjacent photovoltaic module board array all around, gets into fast and avoids shadow influence state.

(3) When the folding wing bracket 7 is attached to the tracking bracket, the parasitic power generation unit of the photovoltaic power station of the utility model tracks the movement of the sun along with the tracking bracket; when the folding wing bracket 7 is attached to the fixed inclination bracket, the folding wing bracket 7 itself can change the inclination of the light irradiation receiving panel 13 by following the change of the solar altitude and azimuth at the optimum inclination to improve the power generation amount.

(4) The utility model discloses photovoltaic power plant's parasitic power generation unit, simple structure, it is safe high-efficient, reduction land use area by a wide margin, reduction support by a wide margin consumes the steel volume, promotes photovoltaic power plant installed capacity by a wide margin, and investment Cost is lower, is favorable to reducing level degree Of charge Cost (LCOE, leveled Cost Of Energy). The large-scale increase of installed capacity of photovoltaic power stations or photothermal power stations provides basic conditions for large-scale improvement of generated energy, and the large-scale increase of generated energy also provides basic conditions for local energy storage and hydrogen production by water electrolysis of the photovoltaic power stations and power supply of nearby partition walls. This will improve photovoltaic power plant light and heat power station's price/performance ratio comprehensively, reduce the standard degree of electricity cost comprehensively.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (9)

1. A parasitic power generation element of a photovoltaic power plant, comprising: attached to the folding wing support on the main part support, the main part support top is equipped with the photovoltaic module board, the folding wing support include with roof beam fixed connection's of equidirectional and parallel in the main part support the roof beam of plugging into is kept away from the one end of main part support is equipped with the pivot support, be equipped with the pivot in the pivot support, be fixed with the light irradiation receiver plate in the pivot, the pivot reaches the light irradiation receiver plate is rotatory by the rotation of rotary drive mechanism drive, works as the light irradiation receiver plate rotate to with photovoltaic module board parallel and level or expand the electricity generation when being certain angle, works as the light irradiation receiver plate is rotatory to draw in when the photovoltaic module board below and keep away the wind.

2. Parasitic power generation unit of a photovoltaic power plant according to claim 1, characterized in that: the rotating shaft support is internally provided with a bushing which is fixed in the rotating shaft support by a semicircular hoop cover, and the rotating shaft is movably matched with the bushing so as to enable the rotating shaft to rotate in the rotating shaft support.

3. Parasitic power generation unit of a photovoltaic power plant according to claim 1, characterized in that: and each folding wing bracket is at least provided with two rotating shaft supports so as to support the spatial position and the posture of the rotating shaft.

4. Parasitic power generation unit of a photovoltaic power plant according to claim 1, characterized in that: the connection beam of the folding wing bracket and the beam of the main body bracket are integrally arranged.

5. Parasitic power generation unit of a photovoltaic power plant according to claim 1, characterized in that: the rotary driving mechanism comprises a winch fixed on the main body support and a fixed pulley fixed on the rotating shaft, the fixed pulley is connected with the winch through a steel wire rope, the steel wire rope is wound on the fixed pulley for at least one and a half circles, the steel wire rope and the fixed pulley are at least fixed at one point, and the winch drives the steel wire rope to drag the rotating shaft to rotate so as to drag the light irradiation receiving plate to do rotary motion.

6. Parasitic power generation unit of a photovoltaic power plant according to claim 1, characterized in that: the light irradiation receiving plate is a photovoltaic module plate or a mirror reflection plate.

7. Parasitic power generation unit of a photovoltaic power plant according to claim 1, characterized in that: the main body support is a fixed inclination angle support or a tracking support, when the folding wing support is attached to the fixed inclination angle support, the rotary driving mechanism drives the light irradiation receiving plate to track the movement change of the sun at the optimal inclination angle for power generation, and when the folding wing support is attached to the tracking support, the folding wing support generates power along with the tracking support tracking the movement of the sun.

8. The parasitic power generation unit of a photovoltaic power plant of claim 7, characterized in that: the tracking support is flat single-axis tracking support or oblique single-axis tracking support or biax tracking support, fixed inclination support the tracking support with the folding wing support makes up into four kinds of new supporting structure systems, fixed inclination support and folding wing support's combination, flat single-axis tracking support and folding wing support's combination, the combination of oblique single-axis tracking support and folding wing support promptly and the combination of biax tracking support and folding wing support.

9. The parasitic power generation unit of a photovoltaic power plant of claim 8, characterized in that: when the main body support is a fixed inclination angle support, the light irradiation receiving plate is a photovoltaic module plate, and after the folding wing support is unfolded, the change of the sun movement is tracked by adjusting the inclination angle of the light irradiation receiving plate in the posture of the optimal inclination angle, so that the power generation capacity is improved.

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