Photovoltaic integrated power distribution control box-type substation

Abstract

The invention belongs to the technical field of photovoltaic box-type substations, and particularly relates to a photovoltaic integrated power distribution control box-type substation which comprises a power distribution box, a reflecting plate, a reflecting curtain and a monitoring module, a photovoltaic power generation plate is installed outside the power distribution box, and the reflecting plate is installed on the edge of the photovoltaic power generation plate and used for refracting sunlight to the photovoltaic power generation plate. The shady face of the reflecting plate is provided with a telescopic joint used for stretching when meeting illumination, the reflecting curtain is arranged outside the reflecting plate through the telescopic joint, when the reflecting curtain is illuminated, the reflecting curtain is unfolded through the telescopic joint to form a double-layer tile type reflecting structure with the reflecting plate, and a rain leakage interval is reserved, and when no illumination exists, the reflecting curtain is shrunk through the telescopic joint to form a double-layer tile type reflecting structure. The folding reflective curtain is hidden in the shady face of the reflective plate, and the monitoring module is arranged outside the distribution box. When illuminated, the reflective curtain can be unfolded to form a double-layer laminated tile type reflective structure with the reflective plate, the reflective surface is enlarged, and the reflective curtain can be folded and hidden to keep away from rain and snow when no illumination exists.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic box-type substations, and particularly relates to a photovoltaic integrated power distribution control box-type substation. Background Art

[0002] A photovoltaic substation refers to a place that uses the photovoltaic effect to convert solar energy into electrical energy and performs voltage conversion and power distribution through the equipment of the substation. It can not only directly convert solar energy into electrical energy, but also transmit the electrical energy to the power grid through equipment such as transformers to achieve power distribution and transmission.

[0003] In some places with limited space, the photovoltaic substation will install the photovoltaic panels on top of the electrical cabinet, and the three-dimensional layout is more compact. However, the light-receiving area of the photovoltaic panels is limited. Some photovoltaic substations install a reflecting mirror at their edges to refract more sunlight onto the photovoltaic panels. For example, a Chinese invention with the publication number CN111245337A, a rooftop concentrating photovoltaic power generation device, is retrieved, which sets up movable reflecting mirrors and inclined reflecting mirrors, and installs them in the middle and both sides of the photovoltaic panels respectively to refract sunlight onto the photovoltaic panels. However, there are still the following areas that need improvement: 1. The inclined reflecting mirrors are often arranged in a single plate shape on both sides of the photovoltaic panels. Due to the projection during sunrise and sunset, it is difficult to rise and fall with the change of light, resulting in partial occlusion, which greatly reduces the overall light-receiving effect.

[0004] 2. The movable reflecting mirrors and the inclined reflecting mirrors are erected, which is easy to block rainwater and form water accumulation. These accumulated water soaks the photovoltaic panels, causing accelerated aging, rusting, etc. In addition, the impurities in the rainwater need to be cleaned additionally after precipitation and adhesion, increasing the maintenance cost. Summary of the Invention

[0005] The purpose of the present invention is to provide a photovoltaic integrated power distribution control box-type substation, which can form a double-layer overlapping tile-shaped reflecting structure with a reflecting curtain and a reflecting plate when receiving light, expand the reflecting surface, and fold and hide to avoid rain and snow when there is no light.

[0006] The technical solutions adopted by the present invention are specifically as follows: A photovoltaic integrated power distribution control box-type substation, comprising: A distribution box, on the outside of which a photovoltaic panel is installed; A reflecting plate, which is installed at the edge of the photovoltaic panel and is used to refract sunlight onto the photovoltaic panel. A telescopic joint for elongation when encountering light is arranged on the backlight surface of the reflecting plate; A reflecting curtain, which is arranged outside the reflecting plate through the telescopic joint; When exposed to light, the expansion joint opens the reflective curtain, forming a double-layer overlapping tile-shaped reflective structure with the reflector, and leaving a rain leakage interval; When there is no light, the expansion joint contracts to fold the reflective curtain and hide it on the backlight side of the reflector; A monitoring module, which is arranged outside the distribution box, is used to collect the light receiving time of the photovoltaic panel and the opening duration of the reflective curtain, compare the two and send the result to the cloud.

[0007] As an alternative solution, the edge of the photovoltaic panel is provided with a hinge seat in an inverted concave shape, a hinge shaft located inside the hinge seat, a bearing ball joint arm connected to the hinge shaft, a guide hole located outside the hinge seat, a guide rod passing through the guide hole, and a limit nut located at the end of the guide rod; When the limit nut is tightened along the thread at the end of the guide rod, it is used to lock the bearing ball joint arm; When the limit nut is loosened, the inclination angle of the bearing ball joint arm is changed by sliding the guide rod along the guide hole.

[0008] As an alternative solution, the expansion joint includes an arc-shaped slide rail fixed to the end of the bearing ball joint arm and in a hollow shape; Inside the arc-shaped slide rail, a curved rod connected to the reflective curtain, a compression cylinder connected to the curved rod, a piston member located inside the compression cylinder, and a photosensitive booster for pushing the piston member when receiving light are sequentially arranged along the curve; Both sides of the arc-shaped slide rail are provided with slide holes and ball head rods passing through the slide holes. One end of the ball head rod is in a ball head shape, and the other end is fixedly connected to the end of the curved rod.

[0009] As an alternative solution, the monitoring module includes a controller installed on the outer surface of the distribution box, a light sensor and a pressure sensor electrically connected to the controller; The light sensor is arranged outside the photovoltaic panel; The detection end of the pressure sensor extends into the arc-shaped slide rail and is used to contact the ball head rod when the curved rod extends to indicate the opening signal of the reflective curtain.

[0010] As an alternative solution, a wire conduit penetrates through the top of the distribution box and a water blocking ring sleeving the wire conduit is fixed; The wire conduit is used for the cable passing through the photovoltaic panel.

[0011] As an alternative solution, inside the distribution box, an electric control room for DC busbar connection and AC conversion, a monitoring room for boosting voltage, and a distribution room for grid connection are spaced apart.

[0012] As an alternative, a rainwater diversion sheet connected to the light sensor is fixed to the bottom of the photovoltaic power generation panel; An air-cooled box is also embedded and installed on the outer surface of the distribution box, and a fan for cooling the monitoring room and the distribution room is installed inside the air-cooled box.

[0013] As an alternative, a light-transmitting glass plate connected to the arc-shaped slide rail is installed at the bottom of the reflector; A reflective sticker staggered from the expansion joint is fixed to one side of the reflector close to the photovoltaic power generation panel.

[0014] As an alternative, a cord is tied to the end of the curved rod and connected to the edge of the reflective curtain; A hanging ring connected to the reflective curtain is sleeved outside the curved rod.

[0015] As an alternative, light-collecting bushings in an open shape are fixed to both sides of the top of the arc-shaped slide rail; A water leakage plate for supporting the compression cylinder is fixed to the bottom of the arc-shaped slide rail.

[0016] The technical effects achieved by the present invention are as follows: When the present invention is illuminated, sunlight passes through the light-transmitting part of the reflector and the light-transmitting glass plate, the photosensitive booster contacts the light beam and expands, pushes the piston part, so as to extend the curved rod at the port of the compression cylinder, thereby pulling up the upper edge of the reflective curtain, and forms a double-layer overlapping tile-shaped reflective structure by spreading out the reflective curtain and the reflector, amplifying the reflective surface, enhancing the overall light-receiving effect, and being able to concentrate more light beams on the photovoltaic power generation panel. When there is no light, due to the contraction of the photosensitive booster, the reflective curtain is pulled down below the light-transmitting glass plate, so as to fold the reflective curtain and hide it on the backlight side of the reflector, enabling rainwater to flow down along the light-transmitting glass plate, preventing rainwater from precipitating and adhering to the reflective curtain, and avoiding the precipitation and adhesion of impurities in the rainwater. In this way, the later maintenance and cleaning workload is small and the maintenance cost is low.

[0017] The present invention is carried by the hinge seat on the back of the photovoltaic power generation panel, so that the reflector, the light-transmitting glass plate and the bearing ball joint arm are suspended, leaving a certain distance from the photovoltaic power generation panel, which can allow rainwater to leak and prevent water accumulation, and can also make the projection of the reflector avoid the photovoltaic power generation panel. When the limit nut is tightened along the thread, it is used to lock the bearing ball joint arm to stably support the double-layer overlapping tile-shaped reflective structure and the light-transmitting glass plate. When the limit nut is loosened, the inclination angle of the bearing ball joint arm is changed by sliding the guide rod along the guide hole, thereby driving the double-layer overlapping tile-shaped reflective structure to change the reflection angle, which is convenient for the staff to adjust adaptively according to different latitudes.

[0018] The present invention collects the light-receiving time of the photovoltaic power generation panel and the opening duration of the reflective curtain, compares the two, sends the comparison result to the cloud, and sets a standard value. When the comparison result is not higher than the standard value, it indicates that the utilization rate of the reflective curtain is relatively high and no adjustment is required. Or when the comparison result is higher than the standard value, it indicates that the utilization rate of the reflective curtain is relatively low, and it is necessary to release the locking state of the guide rod and timely change the inclination angle of the double-layer overlapping tile-type reflective structure so as to contact more light beams and increase the opening duration of the reflective curtain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the front view of a photovoltaic integrated power distribution control box-type substation of the present invention; Figure 2 is the rear view of a photovoltaic integrated power distribution control box-type substation of the present invention; Figure 3 is the front view of the erected state of a photovoltaic integrated power distribution control box-type substation of the present invention; Figure 4 is the rear view of the erected state of a photovoltaic integrated power distribution control box-type substation of the present invention; Figure 5 is the front view of the distribution box of the present invention; Figure 6 is the front view of the light steel keel of the present invention; Figure 7 is the front view of the expansion joint of the present invention; Figure 8 is the front view of the state where the compression cylinder extends the curved rod of the present invention; Figure 9 is the cross-sectional view of the compression cylinder of the present invention; Figure 10 is the front view of the hinge seat of the present invention; Figure 11 is the top view of the water leakage plate of the present invention; Figure 12 is the system block diagram of the controller of the present invention; Figure 13 is the expansion change curve diagram of the hydrogel of the present invention under three environments.

[0020] In the drawings, the list of components represented by each reference numeral is as follows: 1. Distribution box; 101. Photovoltaic panel; 102. Water-blocking ring; 103. Conduit; 104. Electric control room; 105. Monitoring room; 106. Distribution room; 107. Rainwater diversion sheet; 108. Air-cooled box; 109. Fan; 2. Reflector; 201. Hinge seat; 202. Hinge shaft; 203. Load-bearing ball joint arm; 204. Guide hole; 205. Guide rod; 206. Limit nut; 207. Transparent glass plate; 208. Reflective sticker; 3. Reflective curtain; 301. Rope belt; 302. Suspension ring; 4. Arc-shaped slide rail; 401. Curved rod; 402. Compression cylinder; 403. Piston part; 404. Photosensitive booster; 405. Slide hole; 406. Ball head rod; 407. Condensing bushing; 408. Leakage plate; 5. Controller; 6. Light sensor; 7. Pressure sensor. Detailed implementation manners

[0021] In order to make the purpose and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the scope of protection specifically claimed by the present invention.

[0022] The integrated photovoltaic box-type substation is a comprehensive device integrating photovoltaic power generation, electric box and transformer, and plays a crucial role in the photovoltaic power generation system. Its appearance not only greatly improves the efficiency of the photovoltaic power generation system, but also solves the problems of space waste and energy loss caused by the independent setting of the electric box and transformer. Moreover, with the integrated design, the box-type substation can be prefabricated modularly in the factory building and then dispatched to the designated place according to the work order for on-site construction.

[0023] As Figures 1-13 shown, a photovoltaic integrated power distribution control box-type substation includes a distribution box 1. After being prefabricated modularly in the factory building, it is dispatched to the designated place for on-site construction as Figure 5 shown for the distribution box 1, and alloy keels are constructed on the top of the distribution box 1 and the ground beside it through aluminum alloy square tubes. As Figure 3 , Figure 4 and Figure 6 shown, the alloy keels are divided into two layers. The lower layer is used for grounding, and the upper layer is fixed on the top of the distribution box 1 by bolts. Then, multiple photovoltaic panels 101 are arrayed outside the distribution box 1 through the alloy keels. In this embodiment, The distributed photovoltaic power generation panels 101 are arranged facing the sun. According to the on-site site conditions, the number of photovoltaic power generation panels 101 can also be increased. The photovoltaic power generation panels 101 and the distribution box 1 can be integrated in a stacked manner, greatly saving the occupied space. The photovoltaic power generation panels 101 convert light energy into electrical energy and send it into the distribution box 1. After DC busbar connection and distribution, the inverter converts DC into AC, the AC is distributed, and the transformer steps up the voltage for grid connection, realizing the full-process power distribution control of photovoltaic power generation.

[0024] Among them, due to the use of alloy keels, the photovoltaic power generation panels 101 and the distribution box 1 are stacked vertically. The photovoltaic power generation panels 101 can block the rain and snow above the distribution box 1, which is convenient for the distribution box 1 to remain dry, reducing the moisture-proof burden. Moreover, using the distribution box 1 as a support structure, the firmness is better, and it is more wind-resistant and anti-falling.

[0025] Refer to the appendix Figure 2 、 Figure 4 and Figure 5 In the distribution box 1, an electrical control room 104, a monitoring room 105, and a distribution room 106 are separated by intervals. Among them, the electrical control room 104 is equipped with a DC busbar box (equipped with anti-reverse diodes and fuse protection) and a photovoltaic inverter. The monitoring room 105 is equipped with a low-voltage cabinet, a step-up transformer (boosting from 0.4KV to 35KV), and a high-voltage switch cabinet. The distribution room 106 is equipped with a metering cabinet (installed with a two-way electric meter), a grid connection cabinet (the connection point with the power grid, meeting the technical specifications of the power grid company, such as the low-voltage ride-through ability), an energy storage system (configured with batteries to store excess electrical energy), an intelligent communication component (communicating with the power grid dispatching center through 4G, 5G, or optical fiber to achieve remote control), and a SCADA system (remotely monitoring power generation, equipment status, fault alarm, etc.). When there is light, the current of the photovoltaic power generation panels 101 flows sequentially through the DC busbar box, the photovoltaic inverter, the low-voltage cabinet, the step-up transformer, the high-voltage switch cabinet, the metering cabinet, the SCADA system, and the grid connection cabinet, and the energy storage system and the intelligent communication component are connected in series to the above circuit.

[0026] Refer to the appendix Figure 2 and Figure 4 In terms of waterproofing, in this embodiment, a wire conduit 103 penetrates through the top of the distribution box 1, and a water-blocking ring 102 that sleeves the wire conduit 103 is bonded. The wire conduit 103 is used for the cable passing through the photovoltaic power generation panels 101 and connecting to the DC busbar box. Since the water-blocking ring 102 made of rubber seals the side seams of the wire conduit 103, it can prevent water seepage. Among them, Figure 5 The distribution box 1 without the water-blocking ring 102 and the wire conduit 103 is built on the hardened ground, and the bottom is raised by a steel beam to avoid waterlogging on the ground.

[0027] Refer to the appendix Figure 1 、 Figure 2 and Figure 7, in this embodiment, a reflector 2 is installed at the edge of the photovoltaic power generation panel 101. The reflector 2 is set in three groups and distributed on three sides of the photovoltaic power generation panel 101 to refract sunlight onto the photovoltaic power generation panel 101. The reflector 2 forms a 90° inclination angle with the photovoltaic power generation panel 101, which is convenient for reflecting the sunlight rising and setting onto the photovoltaic power generation panel 101; Furthermore, the three groups of reflectors 2 are respectively denoted as group A, group B, and group C. Among them, group A and group B are respectively located on two symmetric sides of the photovoltaic power generation panel 101, and group C is located in the middle of group A and group B, so as to reflect sunlight from three directions, and the height dimensions of the three do not exceed 1 / 4 of the width dimension of the photovoltaic power generation panel 101 to prevent projection onto the photovoltaic power generation panel 101 from causing occlusion.

[0028] Refer to the appendix Figure 1 、 Figure 2 and Figure 7 , a light-transmitting glass plate 207 parallel to the photovoltaic power generation panel 101 is glued to the bottom of the reflector 2 with glass glue, and the reflector 2 can be made of a partially light-transmitting acrylic material or a partially light-transmitting glass material, which is convenient for sunlight to pass through the reflector 2 and the light-transmitting glass plate 207, and to block rain and snow above. Also, a reflective sticker 208 perpendicular to the photovoltaic power generation panel 101 is bonded to the side of the reflector 2 close to the photovoltaic power generation panel 101, so that the sunlight is reflected by the reflective sticker 208 onto the photovoltaic power generation panel 101.

[0029] Refer to the appendix Figure 2 、 Figure 7 and Figure 10, to leave a gap for rainwater to leak, in this embodiment, a concave-shaped hinge seat 201 is provided at the edge of the photovoltaic panel 101, a hinge shaft 202 located inside the hinge seat 201, a load-bearing ball joint arm 203 connected to the hinge shaft 202, a guide hole 204 located outside the hinge seat 201, a guide rod 205 passing through the guide hole 204, and a limit nut 206 located at the end of the guide rod 205. Since the hinge seat 201 is fixed to the back of the photovoltaic panel 101 by screws, and the end of the load-bearing ball joint arm 203 is fixed to the bottom of the light-transmitting glass plate 207 and the bottom of the reflector 2 by screws, the reflector 2, the light-transmitting glass plate 207, and the load-bearing ball joint arm 203 are suspended, leaving a certain distance from the photovoltaic panel 101, which can allow rainwater to leak and prevent water accumulation. It can also make the projection of the reflector 2 avoid the photovoltaic panel 101. Also, since the guide rod 205 is welded to the load-bearing ball joint arm 203, when the limit nut 206 is tightened along the thread at the end of the guide rod 205, it is used to lock the load-bearing ball joint arm 203 and stably support the reflector 2 and the light-transmitting glass plate 207. When the limit nut 206 is loosened, by sliding the guide rod 205 along the guide hole 204, the inclination angle of the load-bearing ball joint arm 203 can be changed, thereby driving the reflector 2 and the reflective sticker 208 to swing upward to reduce the inclination angle, or driving the reflector 2 and the reflective sticker 208 to swing downward to increase the inclination angle, which is convenient for the staff to adjust adaptively according to different latitudes.

[0030] Among them, since the higher the latitude, the smaller the solar altitude angle, and the less light received per unit area, it is necessary to increase the inclination angle of the reflective sticker 208. And the lower the latitude, the larger the solar altitude angle and the stronger the light, so it is necessary to reduce the inclination angle of the reflective sticker 208.

[0031] Refer to the appendix Figure 1 and Figure 2 , to gather more sunlight, in this embodiment, an arc-shaped reflective curtain 3 is further provided outside the reflector 2. By unfolding the reflective curtain 3, a double-layer overlapping tile-shaped reflective structure is formed with the reflector 2, expanding the reflective surface and enhancing the overall light-receiving effect, which can gather more light beams onto the photovoltaic panel 101. When there is no light, the reflective curtain 3 can be shielded and stored under the reflector 2 and the light-transmitting glass plate 207, which is convenient for protecting against wind and rain and avoiding the precipitation and adhesion of impurities in the rainwater. In this way, the later maintenance and cleaning workload is small and the maintenance cost is low.

[0032] Refer to the appendix Figure 7 , Figure 8 and Figure 9In order to freely open the reflective curtain 3, in this embodiment, a hollow arc-shaped slide rail 4 is fixed at the end of the bearing ball joint arm 203 through a folding plate, which is used to suspend the reflective curtain 3, wherein the middle of the arc-shaped slide rail 4 is fixed to the light-transmitting glass plate 207 by screws. Since the arc-shaped slide rail 4 is sequentially provided with a curved rod 401 connected to the reflective curtain 3, a compression cylinder 402 connected to the curved rod 401, a piston member 403 located inside the compression cylinder 402, and a photosensitive booster 404 for pushing the piston member 403 when receiving light, when receiving light, since the reflective sticker 208 is staggered from the arc-shaped slide rail 4, sunlight passes through the reflected The light-transmitting part of the plate 2 and the light-transmitting glass plate 207 expand when contacting the light beam through the photosensitive booster 404, pushing the piston 403 to extend the curved rod 401 at the end of the compression cylinder 402, thereby pulling the upper edge of the reflective curtain 3 to rise, and opening along the arc-shaped slide rail 4 at a position higher than the reflective plate 2. When there is no light, the photosensitive booster 404 contracts, driving the piston 403 and the curved rod 401 to retract, pulling the reflective curtain 3 to fall below the light-transmitting glass plate 207, so that the reflective curtain 3 is folded and hidden on the backlight side of the reflective plate 2, so that rainwater flows down along the light-transmitting glass plate 207, and prevents rainwater from settling and adhering to the reflective curtain 3; Furthermore, both sides of the arc-shaped slide rail 4 are provided with a slide hole 405 and a ball head rod 406 passing through the slide hole 405. One end of the ball head rod 406 is in a ball head shape, and the other end is welded to the end of the curved rod 401, so that the ball head rod 406 slides along the slide hole 405 when the curved rod 401 moves, and can limit the curved rod 401, and stably drive the reflective curtain 3 to move forward or retract along the arc-shaped slide rail 4; Furthermore, the photosensitive booster 404 is a water-soluble spiropyran molecule containing both polymerizable methacrylic acid groups and sulfonate groups. It is synthesized in the presence of NIPAM monomer (N-isopropylacrylamide), BIS crosslinker (such as methylene bisacrylamide or disuccinimidyl suberate sulfonic acid sodium salt) and APS (ammonium persulfate) / TEMED (N,N,N',N'-tetramethylethylenediamine) initiator. The volume of the hydrogel containing sulfonated spiropyran expands after light treatment in acidic water, such as Figure 13 As shown, the red circle indicates that the hydrogel exhibits a secondary light-induced expansion change curve when illuminated after spontaneous expansion at a higher solution pH, the blue triangle indicates that the same final expansion rate curve is obtained by applying the two stimuli in opposite orders to the same gel, and the black square indicates the hydrogel expansion change curve under pH and light. Simultaneous stimulation will produce faster expansion dynamics. Therefore, the hydrogel under a higher pH is selected in this embodiment.

[0033] See attached Figure 7 , Figure 8 and Figure 9Since the end of the curved rod 401 is tied with a rope 301 connected to the edge of the reflective curtain 3, the reflective curtain 3 is pulled open by the rope 301 when the curved rod 401 is raised, and a ring 302 connected to the reflective curtain 3 is sleeved on the outside of the curved rod 401, and the ring 302 is divided into three rows of different heights, which can divide the reflective curtain 3 into four folding shapes. The four foldings are opened in sequence. Conversely, when descending, the four foldings are folded together in sequence, which is convenient for storage under the light-transmitting glass plate 207.

[0034] Of course, for the opening of the reflective curtain 3, the curved rod 401, the compression cylinder 402, the piston member 403, and the photosensitive booster 404 can also be replaced by an electric push rod, which is tilted and hinged on the load-bearing ball joint arm 203. When the cylinder rod is extended, the cylinder rod uses the rope 301 to pull the upper edge of the reflective curtain 3, pushing the upper edge of the reflective curtain 3 to rise along the arc-shaped slide rail 4. When the cylinder rod is shortened, the reflective curtain 3 is pulled back to below the light-transmitting glass plate 207. At the same time, the electric push rod can be powered by the energy storage system in the distribution chamber 106 (such as a battery pack).

[0035] See attached Figure 1 , Figure 7 and Figure 12 The monitoring module includes a controller 5 installed on the outer surface of the distribution box 1, a light sensor 6 and a pressure sensor 7 electrically connected to the controller 5, wherein the light sensor 6 is arranged outside the photovoltaic panel 101, and the detection end of the pressure sensor 7 extends into the arc-shaped slide rail 4, and is used to contact the ball head rod 406 when the curved rod 401 is extended to indicate the opening signal of the reflective curtain 3, and is used to collect the light receiving time of the photovoltaic panel 101. and the opening time T' of the reflective curtain 3, and compare the two Q = The comparison results are sent to the cloud and the standard value is set ,when When , it means that the utilization rate of the reflective curtain 3 is high and no adjustment is required, or when When , it indicates that the utilization rate of the reflective curtain 3 is low, and it is necessary to release the locking state of the guide rod 205 and change the inclination angle of the double-layer imbricate reflective structure in time so as to contact more light beams and increase the opening time of the reflective curtain 3.

[0036] Among them, the light sensor 6 can use the ABL-0008 model light intensity sensor, the maximum monitored light range can reach 200KLUX, and the pressure signal is transmitted to the controller 5 through RS485 communication; the pressure sensor 7 can use the EGCS-A2 model piezoresistive pressure sensor, which transmits the pressure signal to the controller 5 through RS485 communication and has 10000g overload limit protection.

[0037] See attached Figure 1 , Figure 4 andFigure 12 A rainwater diversion sheet 107 connected to the light sensor 6 is bonded to the bottom of the photovoltaic panel 101 for carrying the light sensor 6. An air cooling box 108 is also embedded and installed on the outer surface of the distribution box 1. A fan 109 for dissipating heat in the monitoring room 105 and the distribution room 106 is installed inside the air cooling box 108. The fan 109 blows cold air into the distribution box 1 in an environment where the photovoltaic panel 101 is sheltered from wind and rain, so as to dissipate heat for the DC junction box, photovoltaic inverter, low-voltage cabinet, step-up transformer, high-voltage switch cabinet, and metering cabinet.

[0038] Refer to the attached Figure 7 and Figure 11 , both sides of the top of the arc-shaped slide rail 4 are fixed with open focusing bushings 407, and the two open focusing bushings 407 are made of forged aluminum alloy as a whole, and the surface is sprayed with a reflective coating, which can gather sunlight to the compression cylinder 402; Furthermore, in order to allow the photosensitive booster 404 in the compression cylinder 402 to be exposed to sunlight, the compression cylinder 402 can be made of high-strength light-transmitting glass as a whole, or can be made of a stainless steel cylinder, and a curved high-strength light-transmitting glass is embedded in the top surface of the stainless steel cylinder to allow sunlight to penetrate the compression cylinder 402 and reach the photosensitive booster 404; Furthermore, a water leakage plate 408 for supporting the compression cylinder 402 is fixed to the bottom of the arc-shaped slide rail 4 by screws. The water leakage plate 408 can support the compression cylinder 402 and leak rainwater to prevent accumulated water from settling and adhering to the compression cylinder 402.

[0039] The working principle of the present invention is: when working, by building an alloy keel, the photovoltaic panel 101 and the distribution box 1 are integrated and stacked up and down, so as to shield the rain and snow above the distribution box 1, keep it dry, and reduce the moisture-proof burden.

[0040] When the light is on, the current of the photovoltaic panel 101 flows to the DC combiner box, the photovoltaic inverter, the low-voltage cabinet, the step-up transformer, the high-voltage switch cabinet, the metering cabinet, the SCADA system, and the grid cabinet in sequence.

[0041] When exposed to light, since the reflective tape 208 is offset from the arc-shaped slide rail 4, sunlight passes through the light-transmitting part of the reflective plate 2 and the light-transmitting glass plate 207, and expands by contacting the light beam through the photosensitive booster 404, pushing the piston 403 to extend the curved rod 401 at the port of the compression cylinder 402, thereby pulling the upper edge of the reflective curtain 3 up and opening along the arc-shaped slide rail 4 at a position higher than the reflective plate 2.

[0042] When there is no light, the photosensitive booster 404 contracts, driving the piston 403 and the curved rod 401 to retract, pulling the reflective curtain 3 to fall under the transparent glass plate 207, so that the folded reflective curtain 3 is hidden under the backlight surface of the reflective plate 2, allowing rainwater to flow down along the transparent glass plate 207, preventing rainwater from settling and adhering to the reflective curtain 3.

[0043] Meanwhile, the light sensor 6 collects the light receiving time of the photovoltaic panel 101 , and the pressure sensor 7 collects the opening duration T' of the reflective curtain 3. The two are compared and the comparison result is sent to the cloud, and a standard value is set , when , it indicates that the utilization rate of the reflective curtain 3 is relatively low, and the locking state of the guide rod 205 needs to be released, and the inclination angle of the double-layer overlapping tile type reflective structure should be changed in time so as to contact more light beams and increase the opening duration of the reflective curtain 3

[0044] The above are only optional embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention. The structures, devices and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art

Claims

1. A photovoltaic integrated power distribution control box substation, characterized in that: include: A distribution box (1), wherein a photovoltaic power generation panel (101) is installed outside the distribution box (1); A reflector (2), the reflector (2) being mounted on the edge of the photovoltaic power generation panel (101) and used for refracting sunlight to the photovoltaic power generation panel (101), the backlight surface of the reflector (2) being provided with a telescopic joint used for extending when exposed to light; A reflective curtain (3), wherein the reflective curtain (3) is arranged outside the reflective plate (2) via a telescopic joint; When exposed to light, the telescopic joint opens the reflective curtain (3) to form a double-layer imbricate reflective structure with the reflective plate (2), and leaves a gap for rain leakage; When there is no light, the telescopic joint contracts to fold the reflective curtain (3) and hide it behind the backlight surface of the reflective plate (2); A monitoring module, the monitoring module is arranged outside the distribution box (1), and is used to collect the light receiving time of the photovoltaic panel (101) and the opening time of the reflective curtain (3), compare the two and send the result to the cloud.

2. A photovoltaic integrated power distribution control box substation according to claim 1, characterized in that: The edge of the photovoltaic power generation panel (101) is provided with an inverted concave hinge seat (201), a hinge shaft (202) located inside the hinge seat (201), a bearing ball joint arm (203) connected to the hinge shaft (202), a guide hole (204) located outside the hinge seat (201), a guide rod (205) passing through the guide hole (204), and a limit nut (206) located at the end of the guide rod (205); When the limiting nut (206) is tightened along the thread at the end of the guide rod (205), it is used to lock the bearing ball joint arm (203); When the limiting nut (206) is loosened, the guide rod (205) is slid along the guide hole (204) to change the inclination angle of the bearing ball joint arm (203).

3. A photovoltaic integrated power distribution control box substation according to claim 2, characterized in that: The telescopic joint comprises a hollow arc-shaped slide rail (4) fixed to the end of the bearing ball joint arm (203); The arc-shaped slide rail (4) is provided with a curved rod (401), a compression cylinder (402) connected to the curved rod (401), a piston member (403) located inside the compression cylinder (402), and a photosensitive booster (404) for pushing the piston member (403) when receiving light in sequence along a curve; Both sides of the arc-shaped slide rail (4) are provided with slide holes (405) and ball head rods (406) passing through the slide holes (405); one end of the ball head rod (406) is in a ball head shape, and the other end is fixedly connected to the end of the curved rod (401).

4. A photovoltaic integrated power distribution control box substation according to claim 3, characterized in that: The monitoring module comprises a controller (5) mounted on the outer surface of the distribution box (1), a light sensor (6) and a pressure sensor (7) electrically connected to the controller (5); The light sensor (6) is arranged outside the photovoltaic power generation panel (101); The detection end of the pressure sensor (7) extends into the interior of the arc-shaped slide rail (4) and is used to contact the ball head rod (406) when the curved rod (401) is extended, so as to indicate an opening signal of the reflective curtain (3).

5. The photovoltaic integrated power distribution control box substation according to claim 1 is characterized in that: A wire tube (103) is passed through the top of the distribution box (1), and a water-blocking ring (102) is fixedly mounted to cover the wire tube (103); The conduit (103) is used for passing cables of the photovoltaic panel (101).

6. A photovoltaic integrated power distribution control box type substation according to claim 4, characterized in that: The distribution box (1) is internally provided with an electric control room (104) for direct current convergence and conversion of alternating current, a monitoring room (105) for voltage boosting, and a distribution room (106) for incorporating into a power grid.

7. A photovoltaic integrated power distribution control box type substation according to claim 6, characterized in that: A rainwater diversion sheet (107) connected to the light sensor (6) is fixed at the bottom of the photovoltaic power generation panel (101); An air cooling box (108) is also embedded in the outer surface of the distribution box (1), and a fan (109) for dissipating heat from the monitoring room (105) and the distribution room (106) is installed inside the air cooling box (108).

8. The photovoltaic integrated power distribution control box substation according to claim 3 is characterized by: A light-transmitting glass plate (207) connected to the arc-shaped slide rail (4) is installed at the bottom of the reflective plate (2); A reflective sticker (208) staggered from the telescopic joint is fixed on a side of the reflective plate (2) close to the photovoltaic power generation panel (101).

9. The photovoltaic integrated power distribution control box substation according to claim 3, characterized in that: The end of the curved rod (401) is provided with a rope (301) connected to the edge of the reflective curtain (3); The curved rod (401) is externally sleeved with a hanging ring (302) connected to the reflective curtain (3).

10. The photovoltaic integrated power distribution control box substation according to claim 3, characterized in that: Opened focusing bushings (407) are fixed on both sides of the top of the arc-shaped slide rail (4); A water leakage plate (408) for supporting the compression cylinder (402) is fixed to the bottom of the arc-shaped slide rail (4).

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