Stable electric energy transmission device for wind-solar complementary micro-grid and installation method of stable electric energy transmission device

Abstract

The invention relates to a wind-solar complementary micro-grid electric energy stable transmission device and an installation method thereof, and belongs to the technical field of electric energy transmission. The structure of the transmission device comprises a transmission unit, a wind driven generator and a photovoltaic panel; the photovoltaic panel and the wind driven generator are arranged on the side of the conveying unit; the photovoltaic panel and the wind driven generator are connected to the conveying unit; the conveying unit comprises a box body and a power distribution switch box, and the power distribution switch box is fixedly arranged on the outer side wall of the box body; a direct-current busbar, a bidirectional converter and an energy storage battery pack are arranged in the box body, the output end of the wind driven generator and the output end of the photovoltaic panel are connected with the direct-current busbar, and the positive end and the negative end of the energy storage battery pack are connected to the direct-current busbar in parallel. The direct-current busbar is connected with the direct-current bus end of the bidirectional converter; the AC output end of the bidirectional converter is connected with the power distribution switch box. The invention has the technical effect of improving the power supply and electric energy transmission stability.

Description

Technical Field

[0001] This application relates to the technical field of power transmission, and in particular to a stable power transmission device for a wind-solar hybrid microgrid and its installation method. Background Technology

[0002] With the rapid development of the new energy industry, wind and solar energy, as clean and renewable energy sources, have received widespread attention for their comprehensive utilization. Wind-solar complementary microgrid power transmission devices have emerged as an important carrier for distributed energy supply. They can realize the coordinated capture, conversion and stable transmission of wind and solar energy, effectively alleviate the energy crisis and environmental pollution problems, and at the same time meet the reliable power needs of various loads.

[0003] Existing wind-solar hybrid microgrid power transmission devices are mostly composed of wind turbines, photovoltaic panels, power transmission units, and energy storage components. They achieve power capture, conversion, and transmission through simple splicing and assembly. The installation method is mostly to fix each component in stages and then connect the lines. However, the existing devices and installation methods have obvious shortcomings. The integration of each component is low, the coordination is poor, and the stability of power transmission needs to be improved.

[0004] Regarding the aforementioned technologies, the inventors believe that they suffer from low stability in power supply and transmission. Summary of the Invention

[0005] To address the aforementioned technical issues, this application provides a wind-solar hybrid microgrid power transmission device and its installation method.

[0006] This application provides a wind-solar hybrid microgrid power transmission stabilization device and its installation method, which adopts the following technical solution: A wind-solar hybrid microgrid power transmission device includes a transmission unit, a wind turbine, and a photovoltaic panel. The photovoltaic panel and the wind turbine are disposed on the side of the transmission unit. The photovoltaic panel and the wind turbine are connected to the transmission unit. The transmission unit includes a housing and a power distribution switch box, which is fixedly disposed on the outer wall of the housing. The housing contains a DC bus, a bidirectional converter, and an energy storage battery pack. The output terminals of the wind turbine and the photovoltaic panel are connected to the DC bus. The positive and negative terminals of the energy storage battery pack are connected in parallel to the DC bus. The DC bus is connected to the DC bus terminal of the bidirectional converter. The AC output terminal of the bidirectional converter is connected to the power distribution switch box.

[0007] By adopting the above technical solution and using dual energy inputs of photovoltaic panels and wind turbines, the solar and wind energy resources can be fully utilized to achieve multi-energy complementary power generation, significantly improving the continuity and reliability of power generation, effectively reducing power supply fluctuations caused by environmental and weather factors, and improving the overall power supply stability of the microgrid. The DC bus, bidirectional converter, and energy storage battery pack are centrally arranged inside the enclosure to achieve unified collection, efficient conversion, and energy storage regulation of DC power. The energy storage battery pack is directly connected in parallel to the DC bus, which can quickly perform charge and discharge regulation, smooth power fluctuations on the generation side, stabilize the DC bus voltage, and ensure the quality of output power. One end of the bidirectional converter is connected to the DC bus, and the other end is directly connected to the distribution switch box. The power conversion path is simple and the transmission loss is low. It can stably invert DC power into AC power and output it to the outside through the distribution switch box. The whole adopts a modular integrated design, with direct connection between the wind turbine, photovoltaic panels, and transmission unit. The electrical layout is clear and standardized, reducing line redundancy and connection nodes, improving the safety and reliability of system operation, and facilitating maintenance.

[0008] Preferably, the photovoltaic panel is provided with a protective unit, which includes a cleaning component and a protective component; the cleaning component includes a support frame, a scraper, a reset spring, a drive rod, and a drive tube; the support frame is fixedly mounted on the photovoltaic panel; the drive tube is located at one end of the support frame, one end of the drive rod is slidably mounted inside one end of the drive tube, the scraper is fixedly mounted at the other end of the drive rod, the scraper is slidably connected to the support frame, and the bottom of the scraper abuts against the surface of the photovoltaic panel; the reset spring is sleeved on the drive rod, one end of the reset spring is fixedly mounted on the scraper, and the other end of the reset spring is fixedly mounted on the drive tube.

[0009] By adopting the above technical solution, the cleaning component is fixed to the photovoltaic panel by the support frame. The overall structure is highly compatible with the photovoltaic panel, the installation is stable and does not affect the photovoltaic panel's light-gathering efficiency. At the same time, the scraper, drive rod, drive tube and reset spring are integrated and arranged in a compact and reasonable manner, occupying little space on the surface of the photovoltaic panel, avoiding shading interference to the photovoltaic panel's light absorption, and ensuring that the photovoltaic panel's power generation efficiency is not affected. The drive rod is slidably set inside the drive tube, and with the elastic action of the reset spring, it forms a reciprocating sliding cleaning structure. The scraper is slidably connected to the support frame and its bottom abuts against the surface of the photovoltaic panel, which can achieve precise scraping of stains and dust on the surface of the photovoltaic panel, effectively avoiding the decline in photovoltaic panel power generation efficiency caused by the accumulation of stains blocking light, and ensuring that the photovoltaic panel is in a stable and efficient power generation state for a long time.

[0010] Preferably, the protective assembly includes an open box, a protective film, and a drive hose; one end of the open box is rotatably mounted on one end of the support frame, and the protective film is fixedly covering the opening surface of the open box; one end of the drive hose is fixedly mounted on one side of the open box, the drive hose communicates with the interior of the open box, and the other end of the drive hose is connected to the other end of the drive tube.

[0011] By adopting the above technical solution, one end of the open box is rotatably mounted on one end of the support frame, allowing for rotational adjustment according to changes in the outdoor environment. This adapts to complex outdoor wind and weather conditions, ensuring that the normal light-gathering and power generation of the photovoltaic panels is not affected when there is no wind or little wind, while also providing rapid protection in harsh environments, thus balancing protection and practicality. The cooperation between the protective film and the open box effectively blocks the impact and erosion of the photovoltaic panel surface by strong winds, dust, and debris, preventing scratches, damage, or stains from accumulating on the photovoltaic panel surface. This protects the structural integrity and light-gathering performance of the photovoltaic panel, thereby ensuring the stability of the photovoltaic panel's power generation efficiency, extending the service life of the photovoltaic panel, and reducing equipment replacement and maintenance costs. When wind acts on the protective film, the pressure inside the open box changes, which is transmitted to the drive pipe through the drive hose, thereby pushing the drive rod to slide and driving the scraper to clean the photovoltaic panel.

[0012] Preferably, a limiting plate is provided at one end of the support frame, and the limiting plate is used to limit the rotation angle of the open box.

[0013] By adopting the above technical solution, the limiting plate can accurately limit the rotation angle of the open box, preventing the open box from rotating excessively under the action of wind.

[0014] Preferably, the other end of the open box is provided with multiple sets of holding mechanisms, the holding mechanisms including a flexible suction cup, a negative pressure pipe, and an air collection pipe; the diameters at both ends of the air collection pipe are larger than the diameter at the middle of the air collection pipe, one end of the air collection pipe is located on the bottom surface of the open box, and the end face of the one end of the air collection pipe is perpendicular to the bottom surface of the open box; the other end of the air collection pipe is fixedly located on the side of the open box, and an air collection hopper is provided at the other end of the air collection pipe, the end face of the air collection hopper is parallel to the bottom surface of the open box; the flexible suction cup is located on the bottom surface of the open box, one end of the negative pressure pipe is connected to the flexible suction cup, and the other end of the negative pressure pipe is connected to the middle of the air collection pipe.

[0015] By adopting the above technical solution, the open box can be automatically stabilized in the protective state, adapting to outdoor wind environments. The air collection pipe adopts a design where the diameter at both ends is larger than the diameter in the middle. With the air collection bucket set at the end, it can efficiently collect wind airflow. The design of the end face of the air collection bucket being parallel to the bottom surface of the open box can capture wind from different directions to the maximum extent, ensuring that the airflow enters the air collection pipe smoothly. When the airflow flows through the middle of the air collection pipe, negative pressure is generated due to the contraction of the pipe diameter. The negative pressure is quickly transmitted to the flexible suction cup through the negative pressure pipe, so that the flexible suction cup is tightly attached to the support frame, firmly fixing the open box in the protective position, improving the protective reliability of the protective film, preventing debris from hitting the photovoltaic panel, and ensuring the stable power generation of the photovoltaic panel.

[0016] Preferably, a flushing assembly is provided on the side of the photovoltaic panel; the flushing assembly includes a collection shell and a water outlet pipe, and a water collection hopper is provided on the top of the collection shell; a water outlet is provided at the bottom of the other side of the collection shell, one end of the water outlet pipe is located at the water outlet, and the other end of the water outlet pipe is located at the other end of the support frame.

[0017] By adopting the above technical solution, the flushing component is independently arranged on the side of the photovoltaic panel, without occupying the photovoltaic panel's light-receiving area. A water collection hopper is set on the top of the collection housing to efficiently collect and store natural rainwater. A water outlet is set at the bottom of the collection housing and connected to a water outlet pipe. The water outlet pipe extends to the other end of the support frame, which can accurately guide the collected rainwater to the surface of the photovoltaic panel, forming a stable and uniform water supply path. Combined with the cleaning component, wet cleaning is achieved, which greatly improves the cleaning effect of dust and stubborn stains, avoids scratches on the surface of the photovoltaic panel caused by dry scraping, and protects the light-transmitting panel of the photovoltaic panel.

[0018] Preferably, an abutment rod is provided on the side of the other end of the open box.

[0019] Preferably, the outlet is provided with a switch valve, which includes a ball valve, a rotating shaft, a switch rod, and a torsion spring; the ball valve is rotatably disposed inside the outlet and has a through hole; the rotating shaft passes through the outlet and is rotatably connected to the outlet; one end of the rotating shaft is fixedly disposed on the ball valve, and one end of the switch rod is fixedly disposed on the other end of the rotating shaft; the torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fixedly disposed on the outlet, and the other end of the torsion spring is fixedly disposed on the switch rod.

[0020] By adopting the above technical solution, the ball valve is rotated inside the outlet and used with the through hole to achieve on / off control. It has good sealing performance and fast opening and closing response, which can effectively prevent the rainwater stored in the collection shell from seeping or dripping, improve the rainwater utilization rate, and ensure that clean water is supplied on demand. The rotating shaft, switch rod and ball valve are fixedly linked, and the abutment rod realizes trigger opening. The action transmission is direct and the trigger is precise. It can open the water outlet at the same time as the open box enters the protective position, realizing seamless connection of protection, flushing and cleaning. The torsion spring is sleeved on the rotating shaft and connected to the switch rod and the outlet. It can automatically drive the switch rod, rotating shaft and ball valve to reset after the abutment rod is disengaged from the switch rod, and quickly close the outlet, realizing automatic opening and automatic closing.

[0021] Preferably, a heat dissipation vent is provided on one side of the housing, and an air inlet is provided on the other side of the housing; a ventilation fan is provided on the air inlet; and filters are provided on the heat dissipation vent and the air inlet.

[0022] By adopting the above technical solution, the convection layout of the air inlet on one side and the heat dissipation vent on the other side of the enclosure, combined with the ventilation fan, forms a forced ventilation and heat dissipation circuit. This can quickly expel the heat generated by the DC bus, bidirectional converter, and energy storage battery pack during operation, significantly reducing the temperature rise inside the enclosure and preventing the efficiency of components from decreasing due to high temperatures. The ventilation fan at the air inlet can actively introduce external cool air according to heat dissipation needs, improving heat dissipation efficiency and response speed, and keeping the temperature inside the enclosure within a safe and reasonable range. This is especially suitable for high-load, continuous operation of wind-solar hybrid microgrids, improving power supply reliability. Both the air inlet and the heat dissipation vent are equipped with filters, which can effectively block external dust, insects, debris, and sand from entering the enclosure, preventing dust from adhering to the surface of circuit boards, busbars, and components, causing poor heat dissipation, reduced insulation, or short circuit hazards, keeping the internal environment clean, and extending the service life of electrical components.

[0023] An installation method for a wind-solar hybrid microgrid power transmission stabilization device includes the following steps: Step S1: Fix the housing of the conveyor unit, ensuring that the housing is placed horizontally, and then fix the power distribution switch box in the preset position on the outer side wall of the housing. The wiring port of the power distribution switch box is located inside the housing. Step S2: Install internal components. Install the DC bus, bidirectional converter, and energy storage battery pack in the preset mounting positions inside the enclosure in sequence, with a safe distance between the DC bus, bidirectional converter, and energy storage battery pack. Step S3: Connect the circuit inside the box. First, connect the positive and negative terminals of the energy storage battery pack in parallel to the corresponding terminals of the DC bus. Then, fix the DC bus terminal of the bidirectional converter to the DC bus. Step S4: Wind turbine and photovoltaic panel installation. Install the wind turbine and photovoltaic panel on the side of the conveying unit box at preset positions, keeping the wind turbine and photovoltaic panel at a preset distance from the box. The installation orientation of the photovoltaic panel should be adapted to the sunlight, and the installation angle of the wind turbine should be adapted to the wind force. Step S5: Connect the external circuit to the transmission unit. Connect the output terminals of the wind turbine and the photovoltaic panel to the corresponding terminals of the DC busbar inside the enclosure, and then connect the AC output terminal of the bidirectional converter to the power distribution switch box on the outer wall of the enclosure.

[0024] By adopting the above technical solution and using dual energy inputs of photovoltaic panels and wind turbines, the solar and wind energy resources can be fully utilized to achieve multi-energy complementary power generation, significantly improving the continuity and reliability of power generation, effectively reducing power supply fluctuations caused by environmental and weather factors, and improving the overall power supply stability of the microgrid. The DC bus, bidirectional converter, and energy storage battery pack are centrally arranged inside the enclosure to achieve unified collection, efficient conversion, and energy storage regulation of DC power. The energy storage battery pack is directly connected in parallel to the DC bus, which can quickly perform charge and discharge regulation, smooth power fluctuations on the generation side, stabilize the DC bus voltage, and ensure the quality of output power. One end of the bidirectional converter is connected to the DC bus, and the other end is directly connected to the distribution switch box. The power conversion path is simple and the transmission loss is low. It can stably invert DC power into AC power and output it to the outside through the distribution switch box. The whole adopts a modular integrated design, with direct connection between the wind turbine, photovoltaic panels, and transmission unit. The electrical layout is clear and standardized, reducing line redundancy and connection nodes, improving the safety and reliability of system operation, and facilitating maintenance.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The cleaning component is fixed to the photovoltaic panel via a support frame. The overall structure is highly compatible with the photovoltaic panel, ensuring stable installation without affecting the panel's light-gathering efficiency. The scraper, drive rod, drive tube, and reset spring are integrated into a compact and reasonable arrangement, occupying minimal space on the photovoltaic panel surface and avoiding shading interference with light absorption, thus ensuring the photovoltaic panel's power generation efficiency remains unaffected. The drive rod is slidably positioned inside the drive tube, working in conjunction with the elasticity of the reset spring to form a reciprocating cleaning structure. The scraper is slidably connected to the support frame and its bottom abuts against the photovoltaic panel surface, enabling precise removal of dirt and dust from the panel surface. This effectively prevents dirt accumulation from blocking light and causing a decrease in photovoltaic panel power generation efficiency, ensuring the photovoltaic panel remains in a stable and highly efficient power generation state for a long period.

[0026] 2. The open box is rotatably mounted at one end of the support frame, allowing for rotational adjustment according to changes in the outdoor environment. This adapts to complex outdoor wind and weather conditions, ensuring normal solar power generation of the photovoltaic panels even in windless or low-wind conditions, while also providing rapid protection in harsh environments, balancing protection and practicality. The cooperation between the protective film and the open box effectively blocks the impact and erosion of the photovoltaic panel surface by strong winds, dust, and debris, preventing scratches, damage, or stains. This protects the structural integrity and light-gathering performance of the photovoltaic panels, thereby ensuring the stability of their power generation efficiency, extending their service life, and reducing equipment replacement and maintenance costs. When wind acts on the protective film, the pressure inside the open box changes, transmitted through the drive hose to the drive pipe, which in turn pushes the drive rod to slide, driving the scraper to clean the photovoltaic panels. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure in the embodiment.

[0028] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the box in the embodiment.

[0029] Figure 3 This is a schematic diagram of the cleaning component and flushing component in the embodiment.

[0030] Figure 4 This is a schematic diagram of the protective component in the embodiment.

[0031] Figure 5 This is a cross-sectional schematic diagram of the internal structure of the switching valve in the embodiment.

[0032] Explanation of reference numerals in the attached drawings: 1. Conveying unit; 11. Housing; 111. DC bus; 112. Bidirectional converter; 113. Energy storage battery pack; 114. Heat dissipation vent; 115. Air inlet; 1151. Ventilation fan; 116. Filter screen; 12. Power distribution switch box; 2. Wind turbine; 3. Photovoltaic panel; 4. Protection unit; 41. Cleaning assembly; 411. Support frame; 4111. Limit plate; 412. Scraper; 413. Return spring; 414. Drive rod; 415. Drive tube; 42. Protective components; 421. Open box; 4211. Abutment rod; 422. Protective film; 423. Drive hose; 424. Holding mechanism; 4241. Flexible suction cup; 4242. Negative pressure pipe; 4243. Air collection pipe; 4244. Air collection hopper; 5. Flushing components; 51. Collection shell; 511. Water outlet; 52. Water outlet pipe; 53. Water collection hopper; 54. Switch valve; 541. Ball valve; 5411. Through hole; 542. Rotating shaft; 543. Switch rod; 544. Torsion spring. Detailed Implementation

[0033] The following is in conjunction with the appendixFigures 1-5 This application will be described in further detail. Example

[0034] This application discloses a wind-solar hybrid microgrid power transmission stabilization device. (Refer to...) Figure 1 and Figure 2 The system includes a transmission unit 1, a wind turbine 2, and a photovoltaic panel 3. The photovoltaic panel 3 and the wind turbine 2 are located on the side of the transmission unit 1. The photovoltaic panel 3 and the wind turbine 2 are connected to the transmission unit 1. The transmission unit 1 includes a housing 11 and a power distribution switch box 12, which is fixedly installed on the outer wall of the housing 11. Inside the housing 11, there is a DC busbar 111, a bidirectional converter 112, and an energy storage battery pack 113. The output terminals of the wind turbine 2 and the photovoltaic panel 3 are connected to the DC busbar 111. The positive and negative terminals of the energy storage battery pack 113 are connected in parallel to the DC busbar 111. The DC busbar 111 is connected to the DC bus of the bidirectional converter 112. The AC output terminal of the bidirectional converter 112 is connected to the power distribution switch box 12. A heat dissipation vent 114 is provided on one side of the housing 11, and a heat dissipation vent 115 is provided on the other side of the housing 11. An air inlet 115 is provided; a ventilation fan 1151 is installed on the air inlet 115; a filter screen 116 is installed on the heat dissipation vent 114 and the air inlet 115; the photovoltaic panel 3 and the wind turbine 2 convert solar energy and wind energy into electrical energy and output it to the DC bus 111; the positive and negative terminals of the energy storage battery pack 113 are connected in parallel to the DC bus 111, which can be charged for energy storage or discharged for power supply; the DC bus 111 sends DC power to the bidirectional converter 112, which is converted into AC power after inversion, and then connected to the power distribution switch box 12 for external power supply; at the same time, the air inlet 115 on one side of the enclosure 11 introduces external air under the action of the ventilation fan 1151. The airflow flows through the enclosure to dissipate heat from the DC bus 111, bidirectional converter 112, energy storage battery pack 113 and other components, and then is discharged from the heat dissipation vent 114 on the other side. The filter screen 116 can filter impurities in the air to ensure the stable operation of the internal equipment.

[0035] Reference Figure 3 and Figure 4A protective unit 4 is provided on the photovoltaic panel 3. The protective unit 4 includes a cleaning component 41 and a protective component 42. The cleaning component 41 includes a support frame 411, a scraper 412, a reset spring 413, a drive rod 414, and a drive tube 415. The support frame 411 is fixedly mounted on the photovoltaic panel 3. The drive tube 415 is located at one end of the support frame 411. One end of the drive rod 414 is slidably mounted inside one end of the drive tube 415. The scraper 412 is fixedly mounted at the other end of the drive rod 414. The scraper 412 is slidably connected to the support frame 411, and the bottom of the scraper 412 abuts against the surface of the photovoltaic panel 3. The reset spring 413 is sleeved on the drive rod 414, and one end of the reset spring 413 is fixedly mounted on the scraper 412. The other end of the positioning spring 413 is fixedly mounted on the drive tube 415; the protective assembly 42 includes an open box 421, a protective film 422, and a drive hose 423; one end of the open box 421 is rotatably mounted on one end of the support frame 411, and the protective film 422 is fixedly covered on the opening surface of the open box 421; one end of the drive hose 423 is fixedly mounted on one side of the open box 421, and the drive hose 423 communicates with the inside of the open box 421, and the other end of the drive hose 423 is connected to the other end of the drive tube 415; one end of the support frame 411 is provided with a limiting plate 4111, which is used to limit the rotation angle of the open box 421; the other end of the open box 421 is provided with an abutment rod 4211 on the side.

[0036] When affected by strong winds, the wind will blow the protective unit 4 up, causing the open box 421 to rotate around one end of the support frame 411. At this time, the open box 421 is parallel to the support frame 411 and blocks the photovoltaic panel 3. Through the open box 421 and the protective film 422 fixedly covering its surface, the blown debris is prevented from hitting the photovoltaic panel 3, avoiding damage to the photovoltaic panel 3 and ensuring stable power transmission. At the same time, the strong wind will blow the protective film 422, which will rise and fall with the wind force, moving the protective film 422 around the photovoltaic panel 3. The drive hose 423 connected inside the open box 421 generates airflow changes, which in turn pushes the drive rod 414 to slide inside the drive tube 415; the scraper 412 at one end of the drive rod 414 slides with the drive rod 414, and the bottom of the scraper 412 abuts against the surface of the photovoltaic panel 3 and slides in connection with the support frame 411, thereby removing the dirt from the surface of the photovoltaic panel 3; after the scraping is completed, the return spring 413 sleeved on the drive rod 414 drives the drive rod 414 and the scraper 412 to return to their original positions.

[0037] Reference Figure 4The open box 421 has multiple holding mechanisms 424 at its other end. Each holding mechanism 424 includes a flexible suction cup 4241, a negative pressure pipe 4242, and a collecting pipe 4243. The diameters at both ends of the collecting pipe 4243 are larger than the diameter at its middle. One end of the collecting pipe 4243 is located on the bottom surface of the open box 421, and its end face is perpendicular to the bottom surface of the open box 421. The other end of the collecting pipe 4243 is fixedly located on the side of the open box 421, and a collecting hopper 4244 is provided at the other end. The end face of the collecting hopper 4244 is parallel to the bottom surface of the open box 421. The flexible suction cup 4241 is located on the bottom surface of the open box 421. One end of the negative pressure pipe 4242 is connected to the flexible suction cup 4241. The other end of 242 is connected to the middle of the air collection pipe 4243. When the protective component 42 is blown up by the wind, a sufficiently large airflow enters the air collection pipe 4243 from the air collection hopper 4244. Since the diameters at both ends of the air collection pipe 4243 are larger than the diameter in the middle, the airflow forms a negative pressure in the middle of the air collection pipe 4243. The negative pressure is transmitted to the flexible suction cup 4241 through the negative pressure pipe 4242, so that the flexible suction cup 4241 generates an adsorption force to attract and fix the open box 421 and the support frame 411, thereby improving the stability of the protective component 42 in a windy environment. When the air volume decreases, the negative pressure decreases and the flexible suction cup 4241 stops adsorbing, so that the protective component 42 resets and rotates. The limiting plate 4111 limits the angle of reset rotation to ensure the normal operation of the photovoltaic panel 3 in the absence of wind or with little wind.

[0038] Reference Figure 3 and Figure 5A flushing assembly 5 is provided on the side of the photovoltaic panel 3; the flushing assembly 5 includes a collection housing 51 and a water outlet pipe 52, and a water collection hopper 53 is provided on the top of the collection housing 51; a water outlet 511 is provided at the bottom of the other side of the collection housing 51, one end of the water outlet pipe 52 is provided at the water outlet 511, and the other end of the water outlet pipe 52 is provided at the other end of the support frame 411; a switch valve 54 is provided on the water outlet 511, and the switch valve 54 includes a ball valve 541, a rotating shaft 542, and a switch. The device includes a lever 543 and a torsion spring 544; a ball valve 541 is rotatably mounted inside the outlet 511, and the ball valve 541 has a through hole 5411. A rotating shaft 542 passes through the outlet 511 and is rotatably connected to the outlet 511; one end of the rotating shaft 542 is fixedly mounted on the ball valve 541, and one end of the lever 543 is fixedly mounted on the other end of the rotating shaft 542; the torsion spring 544 is sleeved on the rotating shaft 542, and one end of the torsion spring 544 is fixed to the outlet 511. The other end of the torsion spring 544 is fixedly mounted on the switch rod 543; the flushing assembly 5 collects rainwater through the water collection hopper 53 and stores it in the collection housing 51; when the protection assembly 42 is blown by the wind to a designated position to protect the photovoltaic panel 3, the abutment rod 4211 on the other side of the open box 421 will abut against the switch rod 543, driving the rotating shaft 542 to rotate, causing the ball valve 541 in the outlet 511 to rotate and open the through hole 5411, while the torsion spring 544 deforms; the collection housing 5 Rainwater in section 1 flows through outlet 511 and outlet pipe 52 to the other end of support frame 411 and falls onto photovoltaic panel 3; then the airflow brought by air collection pipe 4243 blows the water downward, so that the water flows to cover the surface of photovoltaic panel 3, and with the help of scraper 412 to achieve wet cleaning; when the protection component 42 is reset, the abutment rod 4211 disengages from the switch rod 543, the torsion spring 544 resets and drives the switch rod 543, rotating shaft 542 and ball valve 541 to rotate, close outlet 511 and stop water discharge. Example

[0039] This embodiment discloses an installation method for a wind-solar hybrid microgrid power stabilization transmission device, including the following steps: Step S1: Fix the housing 11 of the conveying unit 1 to ensure that the housing 11 is placed horizontally, and then fix the power distribution switch box 12 to the preset position on the outer side wall of the housing 11. The wiring port of the power distribution switch box 12 is set inside the housing 11. Step S2: Install the internal components of the enclosure 11. Install the DC bus 111, bidirectional converter 112 and energy storage battery pack 113 in the preset installation positions inside the enclosure 11 in sequence. A safe distance is left between the DC bus 111, bidirectional converter 112 and energy storage battery pack 113. Step S3: Connect the circuit inside the housing 11. First, connect the positive and negative terminals of the energy storage battery pack 113 in parallel to the corresponding terminals of the DC bus 111. Then, fix the DC bus terminal of the bidirectional converter 112 to the DC bus 111. Step S4: Install wind turbine 2 and photovoltaic panel 3. Install wind turbine 2 and photovoltaic panel 3 on the side of the housing 11 of the conveying unit 1 at a preset position, so that wind turbine 2 and photovoltaic panel 3 are kept at a preset distance from housing 11. The installation orientation of photovoltaic panel 3 is adapted to the sunlight, and the installation angle of wind turbine 2 is adapted to the wind force. Step S5: Connect the external circuit to the transmission unit 1, connect the output terminal of the wind turbine 2 and the output terminal of the photovoltaic panel 3 to the corresponding terminals of the DC busbar 111 inside the housing 11, and then connect the AC output terminal of the bidirectional converter 112 to the power distribution switch box 12 on the outer wall of the housing 11.

[0040] The working principle of the wind-solar hybrid microgrid power stable transmission device and its installation method in this application is as follows: the photovoltaic panel 3 and the wind turbine 2 convert solar energy and wind energy into electrical energy and input them into the DC bus 111; the energy storage battery pack 113 is connected in parallel to the DC bus 111 to realize charging energy storage or discharging energy replenishment; the DC power is inverted into AC power by the bidirectional converter 112 and then connected to the distribution switch box 12 for external power supply; the air inlet 115 on the box 11 introduces air under the action of the ventilation fan 1151, which dissipates air from the internal components. Heat is then exhausted through the heat dissipation vent 114, and impurities are filtered out by the filter screen 116 to ensure stable operation of the equipment. In windy conditions, the wind blows the open box 421 of the protective unit 4 up and blocks it in front of the photovoltaic panel 3. Under the limit plate 4111, the protective film 422 prevents debris from hitting the photovoltaic panel 3, protecting the power generation stability. The wind blows the protective film 422 to generate airflow changes, which drive the drive rod 414 to slide inside the drive tube 415 through the drive hose 423, causing the scraper 412 to slide along the support frame 411 and scrape off the photovoltaic panel. 3. Surface stains are cleaned, and the scraper 412 is reset by the reset spring 413 after cleaning. Strong air enters the air collection pipe 4243 through the air collection hopper 4244, creating negative pressure in the middle by utilizing the pipe diameter change. This negative pressure acts on the flexible suction cup 4241 through the negative pressure pipe 4242, causing the open box 421 to be attracted and fixed to the support frame 411, improving the stability of the protection state. When the air volume decreases, the negative pressure disappears, the protection component 42 resets, ensuring the photovoltaic panel 3 can normally collect light and generate electricity. The flushing component 5 collects rainwater through the water collection hopper 53 and stores it in the collection shell. Inside 51; when the protection component 42 rotates to the designated position, the abutment rod 4211 presses against the switch rod 543, driving the rotating shaft 542 and the ball valve 541 to rotate and open the water outlet 511, and water is discharged under the deformation of the torsion spring 544; rainwater flows to the photovoltaic panel 3 through the water outlet pipe 52, and then the airflow of the air collection pipe 4243 spreads the water to cover the panel surface, and with the help of the scraper 412, it achieves moist cleaning; after the protection component 42 is reset, the abutment rod 4211 disengages from the switch rod 543, and the torsion spring 544 drives the ball valve 541 to automatically close the water outlet 511.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wind-solar hybrid microgrid power transmission stabilization device, characterized in that: The system includes a conveying unit (1), a wind turbine (2), and a photovoltaic panel (3); the photovoltaic panel (3) and the wind turbine (2) are disposed on the side of the conveying unit (1); the photovoltaic panel (3) and the wind turbine (2) are connected to the conveying unit (1); the conveying unit (1) includes a housing (11) and a power distribution switch box (12), the power distribution switch box (12) being fixedly disposed on the outer side wall of the housing (11); a DC busbar (111) is disposed inside the housing (11). The wind turbine (2) and the photovoltaic panel (3) are connected to the DC bus (111), and the positive and negative terminals of the energy storage battery pack (113) are connected in parallel on the DC bus (111). The DC bus (111) is connected to the DC bus terminal of the wind turbine (2) and the photovoltaic panel (3). The AC output terminal of the wind turbine (2) is connected to the distribution switch box (12).

2. The wind-solar hybrid microgrid power transmission stabilization device according to claim 1, characterized in that: A protective unit (4) is provided on the photovoltaic panel (3). The protective unit (4) includes a cleaning component (41) and a protective component (42). The cleaning component (41) includes a support frame (411), a scraper (412), a reset spring (413), a drive rod (414), and a drive tube (415). The support frame (411) is fixedly mounted on the photovoltaic panel (3). The drive tube (415) is located at one end of the support frame (411), and one end of the drive rod (414) slides. The drive tube (415) is movably disposed inside one end of the drive tube (415), the scraper (412) is fixedly disposed at the other end of the drive rod (414), the scraper (412) is slidably connected to the support frame (411), and the bottom of the scraper (412) abuts against the surface of the photovoltaic panel (3); the reset spring (413) is sleeved on the drive rod (414), one end of the reset spring (413) is fixedly disposed on the scraper (412), and the other end of the reset spring (413) is fixedly disposed on the drive tube (415).

3. The wind-solar hybrid microgrid power transmission stabilization device according to claim 2, characterized in that: The protective assembly (42) includes an open box (421), a protective film (422), and a drive hose (423); one end of the open box (421) is rotatably mounted on one end of the support frame (411), and the protective film (422) is fixedly covered on the opening surface of the open box (421); one end of the drive hose (423) is fixedly mounted on one side of the open box (421), the drive hose (423) is connected to the inside of the open box (421), and the other end of the drive hose (423) is connected to the other end of the drive pipe (415).

4. The wind-solar hybrid microgrid power transmission stabilization device according to claim 3, characterized in that: One end of the support frame (411) is provided with a limiting plate (4111), which is used to limit the rotation angle of the open box (421).

5. The wind-solar hybrid microgrid power transmission stabilization device according to claim 4, characterized in that: The open box (421) is provided with multiple sets of holding mechanisms (424) at the other end. The holding mechanism (424) includes a flexible suction cup (4241), a negative pressure pipe (4242), and an air collection pipe (4243). The diameters at both ends of the air collection pipe (4243) are larger than the diameter at the middle of the air collection pipe (4243). One end of the air collection pipe (4243) is located on the bottom surface of the open box (421), and the end face of one end of the air collection pipe (4243) is perpendicular to the bottom surface of the open box (421). The other end of the air collecting pipe (4243) is fixedly installed on the side of the open box (421). The other end of the air collecting pipe (4243) is provided with an air collecting hopper (4244), and the end face of the air collecting hopper (4244) is parallel to the bottom surface of the open box (421). The flexible suction cup (4241) is installed on the bottom surface of the open box (421). One end of the negative pressure pipe (4242) is connected to the flexible suction cup (4241), and the other end of the negative pressure pipe (4242) is connected to the middle part of the air collecting pipe (4243).

6. The wind-solar hybrid microgrid power transmission stabilization device according to claim 2, characterized in that: The photovoltaic panel (3) is provided with a flushing assembly (5) on its side; the flushing assembly (5) includes a collection housing (51) and a water outlet pipe (52), the top of the collection housing (51) is provided with a water collection hopper (53); the bottom of the other side of the collection housing (51) is provided with a water outlet (511), one end of the water outlet pipe (52) is provided at the water outlet (511), and the other end of the water outlet pipe (52) is provided at the other end of the support frame (411).

7. A wind-solar hybrid microgrid power transmission stabilization device according to claim 5, characterized in that: An abutment rod (4211) is provided on the side of the other end of the open box (421).

8. A wind-solar hybrid microgrid power transmission stabilization device according to claim 6, characterized in that: A switch valve (54) is provided on the outlet (511). The switch valve (54) includes a ball valve (541), a rotating shaft (542), a switch rod (543), and a torsion spring (544). The ball valve (541) is rotatably disposed inside the outlet (511). The ball valve (541) is provided with a through hole (5411). The rotating shaft (542) passes through the outlet (511) and is rotatably connected to the outlet (511). One end of the rotating shaft (542) is fixedly disposed on the ball valve (541), and one end of the switch rod (543) is fixedly disposed on the other end of the rotating shaft (542). The torsion spring (544) is sleeved on the rotating shaft (542). One end of the torsion spring (544) is fixedly disposed on the outlet (511), and the other end of the torsion spring (544) is fixedly disposed on the switch rod (543).

9. A wind-solar hybrid microgrid power transmission stabilization device according to claim 1, characterized in that: A heat dissipation vent (114) is provided on one side of the housing (11), and an air inlet (115) is provided on the other side of the housing (11); a ventilation fan (1151) is provided on the air inlet (115); and a filter screen (116) is provided on the heat dissipation vent (114) and the air inlet (115).

10. An installation method for a wind-solar hybrid microgrid power transmission stabilization device, characterized in that, Includes the following steps: Step S1: Fix the housing (11) of the conveying unit (1) to ensure that the housing (11) is placed horizontally, and then fix the power distribution switch box (12) in the preset position on the outer side wall of the housing (11). The wiring port of the power distribution switch box (12) is set inside the housing (11). Step S2: Install the internal components of the enclosure (11). Install the DC bus (111), bidirectional converter (112) and energy storage battery pack (113) in the preset installation positions inside the enclosure (11) in sequence. A safe distance is left between the DC bus (111), bidirectional converter (112) and energy storage battery pack (113). Step S3: Connect the circuit inside the box (11). First, connect the positive and negative terminals of the energy storage battery pack (113) in parallel to the corresponding terminals of the DC bus (111). Then, fix the DC bus terminal of the bidirectional converter (112) to the DC bus (111). Step S4: Install the wind turbine (2) and photovoltaic panel (3). Install the wind turbine (2) and photovoltaic panel (3) on the side of the conveying unit (1) box (11) at a preset position, so that the wind turbine (2) and photovoltaic panel (3) are kept at a preset distance from the box (11). The installation orientation of the photovoltaic panel (3) is adapted to the sunlight, and the installation angle of the wind turbine (2) is adapted to the wind force. Step S5: Connect the external circuit to the transmission unit (1), connect the output end of the wind turbine (2) and the output end of the photovoltaic panel (3) to the corresponding terminals of the DC busbar (111) inside the box (11), and then connect the AC output end of the bidirectional converter (112) to the power distribution switch box (12) on the outer wall of the box (11).

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