Off-grid low-voltage photovoltaic building material integrated power generation system applied to camping house

Abstract

The utility model discloses an off-grid low-voltage photovoltaic building material integrated power generation system applied to a camping house, which relates to the technical field of photovoltaic power generation and comprises the camping house, a diesel generator is arranged in the camping house, the output end of the diesel generator is connected with a power generation circuit, and the power generation circuit is connected with an electricity load; the plurality of photovoltaic tiles are obliquely mounted on the roof of the camping house, the plurality of photovoltaic tiles are connected with a plurality of inverters, and the inverters are mounted at the bottoms of the photovoltaic tiles; the photovoltaic grid-connected box is located in the camping house, the input end of the photovoltaic grid-connected box is connected with the inverter, and the output end of the photovoltaic grid-connected box is connected with the power generation circuit; and the energy storage device is positioned in the camping house, is connected with the power generation circuit and is used for storing the electric energy generated by the photovoltaic tiles and transmitting the stored electric energy to an electric load. A low-voltage direct-current inversion technology is adopted, an off-grid inversion and energy storage integrated system is developed, an off-grid low-voltage photovoltaic building material integrated power generation system suitable for an oil testing site is formed, and the off-grid low-voltage photovoltaic building material integrated power generation system is very suitable for a field operation environment.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power generation, and more specifically to an off-grid low-voltage photovoltaic building material integrated power generation system applied to a camping house. Background Art

[0002] At present, there are a large number of oil and gas fields in my country, and the exploration and development areas are scattered. Most of them are located in remote areas, and grid electricity cannot be fully popularized. Diesel generators are used at the oil and gas production site to power production and life, but diesel generators are expensive, inefficient, noisy, poor in economic benefits, and cause serious pollution and waste. In order to fundamentally solve this problem, new energy can be used as a clean alternative. Solar energy, as a mature, cheap and abundant resource, has been widely used. However, solar photovoltaic products have not been well used at the oil and gas field production site. The main reasons are as follows:

[0003] (1) Traditional photovoltaic panels have PID effect and hot spot effect. The mutual influence of photovoltaic panels can easily cause fire and explosion at the oil and gas field exploration and development site;

[0004] (2) Traditional photovoltaic panels are prone to high-voltage DC arcing, which poses a risk of electric shock and injury;

[0005] (3) Photovoltaic power generation is not linked to diesel generators. If the photovoltaic energy storage is used up and there is no photovoltaic power generation (such as at night or on rainy days), it is necessary to reinstall the diesel generator, connect it to the grid, and then use diesel generators to supply power. The operation is extremely inconvenient. Utility Model Content

[0006] In order to overcome the defects in the above-mentioned prior art, the purpose of the utility model is to provide an off-grid low-voltage photovoltaic building material integrated power generation system for camping houses. The utility model combines BIPV photovoltaic building material power generation technology with the camping house for oil and gas test units, which not only solves the problem that the oil and gas test operation site is scattered and the grid electricity cannot be popularized, but also overcomes some shortcomings of traditional photovoltaic tiles, replaces most of the fuel power generation, realizes energy conservation and emission reduction, and has great help in achieving the "dual carbon" goal.

[0007] In order to achieve the above objectives, the technical solution adopted by the utility model is:

[0008] An off-grid low-voltage photovoltaic building material integrated power generation system for camping houses, comprising:

[0009] A camping house, wherein a diesel generator is arranged in the camping house, an output end of the diesel generator is connected to a power generation circuit, and the power generation circuit is connected to a useful power load;

[0010] A plurality of photovoltaic tiles, wherein the plurality of photovoltaic tiles are obliquely installed on the roof of the camping house, and the plurality of photovoltaic tiles are connected to a plurality of inverters, wherein the inverters are installed at the bottom of the photovoltaic tiles;

[0011] A photovoltaic grid-connected box located in the camping house, the input end of the photovoltaic grid-connected box is connected to the inverter, and the output end is connected to the power generation circuit;

[0012] An energy storage device located in the camping house and connected to the power generation circuit, storing the electric energy generated by the photovoltaic tiles and transmitting the stored electric energy to the electrical load;

[0013] A controller that controls photovoltaic power generation on-load, photovoltaic power generation to charge energy storage devices, and switching between energy storage device on-load and diesel generator on-load.

[0014] Preferably, the roof of the camping house is provided with a truss, purlins are laid on the truss, and the photovoltaic tiles are laid on the purlins.

[0015] Preferably, the photovoltaic tiles are laid on the roof of the camping house at an angle of 5°.

[0016] Preferably, the photovoltaic tile is a 280WpBIPV photovoltaic tile.

[0017] Preferably, several photovoltaic tiles are connected in series to form a photovoltaic string, and several photovoltaic strings are connected in parallel. After parallel connection, they are connected to inverter cables, and the inverter cables are connected to the inverter; the inverter cables are arranged in wire tubes at the left and right overlaps of the photovoltaic tiles and are adhered with waterproof tape.

[0018] Preferably, a plurality of inverters are connected in parallel to form an inverter group, and a plurality of inverter groups are connected in parallel to a photovoltaic grid-connected box.

[0019] Preferably, the photovoltaic grid-connected box is provided with an input circuit, a grid-connected circuit and an output circuit; the input circuit is provided with a plurality of second circuit breakers, each of which is provided with a second circuit breaker, and the two ends of the input circuit are respectively connected to the inverter group and the grid-connected circuit; the output circuit is provided with a first circuit breaker and a switch, and the two ends of the output circuit are respectively connected to the grid-connected circuit and the power generation circuit.

[0020] Preferably, the energy storage device comprises an energy storage inverter, a battery manager and an energy storage battery which are connected in sequence.

[0021] Preferably, the power generation circuit is connected to a grounding circuit.

[0022] Preferably, the power generation circuit is connected to a fire-fighting mechanism, a smoke sensing mechanism and a constant temperature mechanism, and the fire-fighting mechanism, the smoke sensing mechanism and the constant temperature mechanism are all arranged in the camping house and are control-connected to the controller.

[0023] The main significance of this utility model is as follows:

[0024] (1) Photovoltaic building materials power generation tiles were introduced to the oil and gas testing site, and the photovoltaic tiles were laid on the roof of the camping house at a 5° angle, so that the photovoltaic tiles and the camping house became one, which increased the service life of the house, facilitated the drainage of the camping house, and realized the self-cleaning of the photovoltaic tiles.

[0025] (2) The use of a low-voltage DC inverter power generation solution avoids the risk of fire caused by the high DC voltage of traditional photovoltaic technology, ensuring the safety of residents in the camping house.

[0026] (3) The photovoltaic system cooperates with the energy storage system and is compatible and linked with the diesel generator. The system uses photovoltaic power generation to carry load and charge the energy storage system during the day, and uses energy storage to supply power at night. When the stored power is exhausted, it automatically switches to the generator for power supply. The three complement each other and can achieve 24-hour uninterrupted power supply, replacing fuel power generation and achieving energy conservation and emission reduction.

[0027] Beneficial effects of the utility model:

[0028] 1. By combining BIPV photovoltaic products with building roofs and adopting low-voltage DC inverter technology, an off-grid inverter energy storage integrated system is developed based on the actual circuit system and power consumption on site, forming an off-grid low-voltage photovoltaic building materials integrated power generation system suitable for oil testing sites, which is very suitable for field working environments.

[0029] 2. Taking into full consideration the actual conditions of outdoor sandstorms and thick snow in winter, a simple low-angle flat-laying structure is adopted to install it on the top of the camping house, and a micro inverter (inverter) is used to hide the line at the bottom of the power generation panel, avoiding the risk of weathering leakage and electric shock caused by long-term exposure of the line.

[0030] 3. Compared with the current photovoltaic application technology, by analyzing the particularities of the oil and gas field exploration and development site, the low-voltage safety of photovoltaic building materials power generation technology is innovatively adopted, and the photovoltaic tiles are laid at a 5° angle, so that the photovoltaic tiles and the camping house become one, achieving waterproofing and self-cleaning of the photovoltaic tiles.

[0031] 4. The application of safe low-voltage photovoltaic power generation technology avoids the risk of injury from photovoltaic high-voltage DC power generation, solves the industry pain points of traditional photovoltaic high-voltage DC arcing, PID effect, and hot spot effect, and ensures the safety of residential buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the power generation system of the utility model;

[0033] Figure 2 This is the layout diagram of the trusses and purlins of the camping house of the utility model;

[0034] Figure 3 This is a schematic diagram of the inclined installation of photovoltaic tiles of the utility model;

[0035] Figure 4 This is a schematic diagram of the photovoltaic tile of the utility model;

[0036] Figure 5 This is a schematic diagram of the electrical wiring of the photovoltaic tile string of the utility model;

[0037] Figure 6 The wiring principle from photovoltaic tiles to micro inverters of this utility model;

[0038] Figure 7 The micro inverter of the utility model is connected to the photovoltaic grid-connected box through a T connection;

[0039] Reference numerals:

[0040] 1. Camping house; 11. Truss; 12. Purlin; 2. Diesel generator; 3. Power generation circuit; 31. Grounding circuit; 32. Fire fighting mechanism; 33. Smoke detection mechanism; 34. Constant temperature mechanism; 4. Photovoltaic tile; 5. Inverter; 6. Photovoltaic grid-connected box; 61. Input circuit; 62. Grid-connected circuit; 63. Output circuit; 64. Second circuit breaker; 65. First circuit breaker; 66. Switch; 7. Energy storage device; 71. Energy storage converter; 72. Battery manager; 73. Energy storage battery. DETAILED DESCRIPTION

[0041] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in combination with the embodiments and drawings to fully understand the purpose, features and effects of the present invention.

[0042] Example 1

[0043] An off-grid low-voltage photovoltaic building material integrated power generation system for camping houses, such as Figure 1-7 As shown, including:

[0044] A camping house 1 is provided with a diesel generator 2, an output end of the diesel generator 2 is connected to a power generation circuit 3, and the power generation circuit 3 is connected to a useful electrical load;

[0045] A plurality of photovoltaic tiles 4, wherein the plurality of photovoltaic tiles 4 are obliquely installed on the roof of the camping house 1, and the plurality of photovoltaic tiles 4 are connected to a plurality of inverters 5, wherein the inverters 5 are installed at the bottom of the photovoltaic tiles 4;

[0046] A photovoltaic grid-connected box 6 is located in the camping house 1, the input end of the photovoltaic grid-connected box 6 is connected to the inverter 5, and the output end is connected to the power generation circuit 3;

[0047] An energy storage device 7 located in the camping house 1 and connected to the power generation circuit 3, storing the electric energy generated by the photovoltaic tiles 4 and transmitting the stored electric energy to the electric load;

[0048] A controller for controlling photovoltaic power generation on-load, photovoltaic power generation to charge the energy storage device 7, and switching between the energy storage device 7 on-load and the diesel generator 2 on-load.

[0049] In this embodiment, the photovoltaic tile 4 absorbs solar energy and converts it into electric energy, which is then transmitted to the inverter 5. The inverter 5 is a micro inverter, which is used to convert direct current into 220V alternating current. The electric energy is then transmitted to the photovoltaic grid-connected box 6 for grid connection, and then transmitted to the power generation circuit 3, which is then transmitted to the energy storage device 7 for storage and use by the electrical load.

[0050] In this embodiment, the photovoltaic tiles 4 generate electricity in conjunction with the energy storage device 7, and are compatible and linked with the diesel generator 2. The system uses the photovoltaic tiles 4 to generate electricity and charge the energy storage device 7 during the day, and uses the energy storage device 7 to supply electricity at night. When the energy storage device 7 runs out of power, it automatically switches to the diesel generator 2 for power supply. The three complement each other and can achieve 24-hour uninterrupted power supply, replacing fuel power generation and achieving energy conservation and emission reduction.

[0051] Example 2

[0052] This embodiment is further described on the basis of embodiment 1. Figure 2 and 3 As shown, the roof of the camping house 1 is provided with a truss 11, on which a purlin 12 is laid, and the photovoltaic tile 4 is laid on the purlin 12. The photovoltaic tile 4 is laid at an angle of 5° on the roof of the camping house 1, that is, on the purlin 12. The photovoltaic tile 4 is a 280WpBIPV photovoltaic tile 4.

[0053] In this embodiment, each camping house 1 is equipped with 12 280WpBIPV photovoltaic tiles 4, which are laid on the roof of the camping house 1 at a 5° angle, so that the photovoltaic tiles 4 and the camping house 1 are integrated, which increases the service life of the house, facilitates drainage of the camping house 1, and also realizes self-cleaning of the photovoltaic tiles 4. The photovoltaic tiles 4 use Helios monocrystalline BIPV smart photovoltaic tiles (280Wp), with an effective installation size of 2400*645mm and a weight of 15Kg.

[0054] like Figure 5 and 6 As shown, several photovoltaic tiles 4 are connected in series to form a photovoltaic string, and several photovoltaic strings are connected in parallel. After parallel connection, the inverter cable is connected, and the inverter cable is connected to the inverter 5; the inverter cable is arranged in the wire tube at the left and right overlaps of the photovoltaic tiles 4, and is adhered with waterproof tape.

[0055] In this embodiment, 3 photovoltaic tiles 4 form a string, 2 strings are connected in parallel to a micro-inverter cable, and the cables are laid in the groove formed by the left and right overlaps of the photovoltaic tiles. After laying, waterproof tape needs to be pasted.

[0056] This embodiment adopts a low-voltage inverter power generation solution on the DC side. The low-voltage inverter on the DC side specifically means that the working voltage of the photovoltaic tile is 14.5V, and a three-string and two-parallel mode is adopted to achieve a low-voltage DC operation mode of less than 48V, and a 1.5KW micro inverter is used to convert it into 220V AC.

[0057] In this embodiment, the photovoltaic tile itself has the series-parallel technology, so that the internal structure and external installation method of the photovoltaic tile are modular. If one module has a problem, it will not affect the power generation effect of other modules. It solves the problem that traditional photovoltaic tiles have PID effect and hot spot effect, and the mutual influence of photovoltaic tiles easily causes fire and explosion at the oil and gas field exploration and development operation site.

[0058] like Figure 1 and 7 As shown, a plurality of inverters 5 are connected in parallel to form an inverter group, and a plurality of inverter groups are connected in parallel to a photovoltaic grid-connected box 6 .

[0059] Example 3

[0060] This embodiment is further described on the basis of embodiment 2. Figure 1 As shown, the photovoltaic grid-connected box 6 is provided with an input circuit 61, a grid-connected circuit 62 and an output circuit 63; the input circuit 61 is provided with a plurality of second circuit breakers 64, each of which is provided with a second circuit breaker 64, and the two ends of the input circuit 61 are respectively connected to the inverter group and the grid-connected circuit 62; the output circuit 63 is provided with a first circuit breaker 65 and a switch 66, and the two ends of the output circuit 63 are respectively connected to the grid-connected circuit 62 and the power generation circuit 3.

[0061] like Figure 1 As shown, the energy storage device 7 includes an energy storage converter 71 (PCS), a battery manager 72 (BMS) and an energy storage battery 73 which are connected in sequence. The energy storage converter 71 is used to convert AC power into DC power; the battery manager 72 is used to manage the energy storage battery 73; and the energy storage battery 73 is used to store electrical energy.

[0062] like Figure 1 As shown, the power generation circuit 3 is connected to a ground circuit 31. The power generation circuit 3 is connected to a fire fighting mechanism 32, a smoke sensing mechanism 33 and a constant temperature mechanism 34, which are all arranged in the camping house 1 and are control-connected to the controller.

[0063] In this embodiment, the fire fighting mechanism 32 can be a conventional water pump, water spray pipe or other structure; the smoke sensing mechanism 33 can be a smoke sensor; and the constant temperature mechanism 34 can be an air conditioner. The power generation circuit 3 supplies power to the fire fighting mechanism 32, the smoke sensing mechanism 33 and the constant temperature mechanism 34; and the controller controls the operation of the fire fighting mechanism 32, the smoke sensing mechanism 33 and the constant temperature mechanism 34.

[0064] In this embodiment, according to the on-site power consumption, a 60KW / 113kwh intelligent energy storage system is matched, and active fire protection systems, smoke detection systems, constant temperature systems and other safety protection systems are installed, which can not only realize intelligent operation control, but also meet the on-site safety production requirements.

[0065] In this embodiment, by combining BIPV photovoltaic products with building roofs and adopting low-voltage DC inverter technology, an off-grid inverter energy storage integrated system is developed based on the actual circuit system and power consumption on site, forming an off-grid low-voltage photovoltaic building materials integrated power generation system suitable for the oil test site.

[0066] The implementation methods of the present invention are described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalents or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. An off-grid low-voltage photovoltaic building material integrated power generation system for camping houses, characterized in that: include: A camping house (1), wherein a diesel generator (2) is provided in the camping house (1), an output end of the diesel generator (2) is connected to a power generation circuit (3), and the power generation circuit (3) is connected to a useful electrical load; A plurality of photovoltaic tiles (4), the plurality of photovoltaic tiles (4) being obliquely installed on the roof of the camping house (1), the plurality of photovoltaic tiles (4) being connected to a plurality of inverters (5), the inverters (5) being installed at the bottom of the photovoltaic tiles (4); A photovoltaic grid-connected box (6) located in the camping house (1), wherein the input end of the photovoltaic grid-connected box (6) is connected to the inverter (5), and the output end is connected to the power generation circuit (3); An energy storage device (7) located in the camping house (1) and connected to the power generation circuit (3), storing the electric energy generated by the photovoltaic tiles (4), and transmitting the stored electric energy to the electrical load; A controller for controlling photovoltaic power generation with load, photovoltaic power generation to charge an energy storage device (7), and switching between the energy storage device (7) with load and the diesel generator (2) with load.

2. The power generation system according to claim 1, wherein: The roof of the camping house (1) is provided with a truss (11), purlins (12) are laid on the truss (11), and the photovoltaic tiles (4) are laid on the purlins (12).

3. The power generation system according to claim 1, wherein: The photovoltaic tiles (4) are laid on the roof of the camping house (1) at an angle of 5°.

4. The power generation system according to claim 1, wherein: The photovoltaic tile (4) is a 280WpBIPV photovoltaic tile (4).

5. The power generation system according to claim 1, wherein: A plurality of photovoltaic tiles (4) are connected in series to form a photovoltaic string, and a plurality of photovoltaic strings are connected in parallel. After the parallel connection, the inverter cable is connected, and the inverter cable is connected to the inverter (5); the inverter cable is arranged in a wire tube at the left and right overlaps of the photovoltaic tiles (4) and is adhered with waterproof tape.

6. The power generation system according to claim 1, wherein: A plurality of inverters (5) are connected in parallel to form an inverter group, and a plurality of inverter groups are connected in parallel to a photovoltaic grid-connected box (6).

7. The power generation system according to claim 6, wherein: The photovoltaic grid-connected box (6) is provided with an input circuit (61), a grid-connected circuit (62) and an output circuit (63); the input circuit (61) is provided with a plurality of second circuit breakers (64) each provided thereon, and the two ends of the input circuit (61) are respectively connected to the inverter group and the grid-connected circuit (62); the output circuit (63) is provided with a first circuit breaker (65) and a switch (66), and the two ends of the output circuit (63) are respectively connected to the grid-connected circuit (62) and the power generation circuit (3).

8. The power generation system according to claim 1, wherein: The energy storage device (7) comprises an energy storage converter (71), a battery manager (72), and an energy storage battery (73) connected in sequence.

9. The power generation system according to claim 1, wherein: The power generation circuit (3) is connected to a grounding circuit (31).

10. The power generation system according to claim 1, wherein: The power generation circuit (3) is connected to a fire-fighting mechanism (32), a smoke sensing mechanism (33), and a constant temperature mechanism (34); the fire-fighting mechanism (32), the smoke sensing mechanism (33), and the constant temperature mechanism (34) are all arranged in the camping house (1) and are control-connected to the controller.

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