Photovoltaic power station inverter cluster regulation and control method and device

Abstract

A photovoltaic power station inverter cluster regulation and control method and device. The photovoltaic power station inverter cluster regulation and control device comprises an inverter (1) and a housing (2) located on the outer side of the inverter (1); vertical rods (3) are vertically fixed in the housing (2) at four corners thereof; sliding frames (4) are disposed in the housing (2) on two sides thereof; two ends of each sliding frame (4) are slidably sleeved on the surfaces of two vertical rods (3), respectively; nuts (41) are disposed at two ends of each of the top surface and the bottom surface of each sliding frame (4); the nuts (41) are screwed onto the surfaces of the vertical rods (3); slide grooves (42) are formed in the inner side surfaces of the sliding frames (4); and movable frames (5) for limiting the inverter (1) are slidably clamped to the inner sides of the slide grooves (42).

Description

Photovoltaic power station inverter cluster control method and equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 18, 2023, with application number 202311197139.5, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of inverter control, for example, to a method and device for controlling a photovoltaic power station inverter cluster. Background Art

[0003] As people pay more and more attention to clean energy, more and more factories are willing to choose to use photovoltaic power stations to provide electricity needs within the factory.

[0004] When the direct current output by a photovoltaic power station is converted and regulated by an inverter, the inverter itself is easily damaged by the impact of external components, thereby affecting the normal operation of the inverter.

[0005] Summary of the Invention

[0006] The embodiments of the present application disclose a photovoltaic power station inverter cluster control method and device to prevent damage to the inverter due to impact force.

[0007] The embodiment of the present application provides a photovoltaic power station inverter cluster control device, including an inverter and a shell on the outside of the inverter, vertical rods are vertically fixed at the four corners inside the shell, slides are provided on both sides of the inside of the shell, and the two ends of the slide are respectively slidably sleeved on the surfaces of the two vertical rods, and nuts are provided at both ends of the top and bottom surfaces of the slide, and the nuts are screwed on the surfaces of the vertical rods, a sliding groove is provided on the inner side of the slide, and a movable frame that limits the inverter is slidably engaged on the inner side of the sliding groove, the slide is limited to the side of the inverter by the movable frame, the movable frame is vertically arranged, and the inner side of the movable frame is provided with side grooves, and the top and bottom surfaces of the inverter are provided with splints. The two ends of the splint are respectively located in the side grooves of the two movable frames, and the side grooves are provided with screws that spirally penetrate the ends of the two splints, and the ends of the splints are provided with screw grooves corresponding to the screws. The screw grooves at the ends of the splints at the top and bottom of the inverter have opposite thread directions. When the screw is rotated, the screw and the spiral cooperation of the screw and the two splints make the two splints approach or move away from each other. The front and rear sides of the inverter are provided with wiring frames, and the inverter uses two wiring frames to connect external power plugs. The two power plugs are respectively configured to connect input power equipment and output power equipment. The front and rear sides of the casing are both installed with sealing plates using screws, and a through hole corresponding to the power plug is provided at the center of the sealing plate.

[0008] In some embodiments, two side panels are oppositely provided on both sides of the shell, and frame-shaped elastic plates are installed on the inner sides of the two side panels, and the inner sides of the side panels are fitted with the sides of the shell by means of the elastic plates. Notches are provided at the centers of both sides of the shell, and the outer ends of the two rotating plates are rotated and clamped at the centers of the side panels, and the two rotating plates correspond to the notches passing through the shell. Connecting rods are provided at the top and bottom of the slide, and the inner ends of the two rotating plates are respectively rotated and sleeved on the surfaces of the two connecting rods. Slides are fixed at both ends of the connecting rods, and the two connecting rods at the top of the slide are fixedly connected by means of two slides. The two connecting rods and the two slides form a frame, and the four corners of the frame are respectively slidably sleeved on the surfaces of the four vertical rods.

[0009] In some embodiments, the side plate and the two connecting rods on one side of the inverter cooperate to define two rotating plates, and the distance between the inner ends of the two rotating plates is smaller than the distance between the outer ends of the two rotating plates. When the side plate approaches the side of the shell, the side plate pushes the rotating plate to rotate, and the rotating rotating plate causes the two connecting rods on one side of the inverter to approach each other.

[0010] In some embodiments, a pressure plate is provided on the top of the shell, and protruding rods passing through the pressure plate are fixed at the four corners of the top surface of the shell. Inclined plates are provided on both sides of the bottom surface of the pressure plate, and the bottom surfaces of the two inclined plates are respectively attached to the tops of the two side plates. When the pressure plate is pushed downward, the pressure plate uses the two inclined plates to push the two side plates close to the shell, and a plurality of rubber sheets arranged equidistantly and parallelly are fixed on the bottom surface of the pressure plate.

[0011] In some embodiments, the top and bottom surfaces of the wiring frame are provided with two opposite limiting grooves, and the top and bottom of the wiring frame are movably connected to a movable frame by means of the limiting grooves, and the movable frame includes a limiting plate and a push plate, the limiting plate is located on the inner side of the wiring frame, and the push plate is located on the outer side of the wiring frame, and a sliding rod is fixed between the limiting plate and the push plate, which slides with the limiting groove. The top and bottom of the inner end face of the power plug correspond to the two limiting plates respectively, and the two slides at the top and bottom of the front side of the inverter correspond to the two push plates at the top and bottom of the wiring frame respectively.

[0012] In some embodiments, a clamping rod passing through both ends of the limiting plate is provided on both sides of the interior of the wiring frame, a spring is sleeved on the surface of the clamping rod, and the two limiting plates are connected by the spring. A clamping block at the center of the limiting spring is fixed at the center of the clamping rod, and a cross bar passing through the center of the clamping block is fixed on both sides of the interior of the wiring frame, an elastic part is sleeved on the surface of the cross bar. When the power plug enters the interior of the wiring frame, the power plug uses the two limiting plates to push the clamping rod and the clamping block to slide on the surface of the cross bar.

[0013] In some embodiments, the top and bottom of the wiring frame are hinged with card plates, and the two side surfaces of the card plates are connected to the wiring frame by torsion springs. The inner ends of the two card plates correspond to two limiting plates respectively, and the limiting plates are provided with card slots corresponding to the inner ends of the card plates. When the power plug is connected to the inverter, the inner end of the card plate is correspondingly buckled on the inside of the card slot, and a protrusion corresponding to the outer end of the card plate is fixed on the limiting plate.

[0014] The present application also provides a photovoltaic power station inverter cluster control method, which uses the photovoltaic power station inverter cluster control device described above, including:

[0015] The screw is rotated synchronously. The spiral action of the screw and the end of the clamp increases the distance between the top clamp and the bottom clamp. The inverter is placed on the top of the bottom clamp. The screw is rotated in the opposite direction. The spiral action of the screw and the end of the clamp brings the top clamp and the bottom clamp closer to each other. The initial confinement of the inverter is completed by the clamping of the clamp.

[0016] Rotate the nut on the surface of the vertical rod to drive the slide to move up and down on the surface of the vertical rod. Use the movable frame and the clamping plate to limit the inverter. During the movement of the slide, the slide drives the inverter to move up and down inside the shell, so that the positions of the wiring frames at the front and rear ends of the inverter correspond to the openings of the cover plate and the two power plugs connected to the two wiring frames can be exposed from the openings of the cover plate. The two power plugs are respectively configured to connect to the input power device and the output power device;

[0017] The DC power generated by the PV power station is stored by the input power device, which then feeds the DC power into the inverter through a power plug. The inverter converts the DC power into frequency- and voltage-regulated AC power, which is then transmitted to the output power device through another power plug. The inverter is connected to an external cluster monitoring device, which regulates the DC power generated by the PV power station based on the frequency- and voltage-regulated AC power generated by the inverter.

[0018] When the housing is impacted during inverter operation, the pressure plate moves down and approaches the housing, and the inclined plate drives the two side plates to gradually approach the housing. As the pressure plate approaches the housing, the pressure plate squeezes the rubber sheet, and as the side plates approach the housing, the side plates squeeze the elastic plates. The rubber sheet and elastic plates absorb the impact force on the pressure plate, preventing the impact force from directly impacting the housing surface.

[0019] When the side plate is close to the shell, the movement of the side plate drives the two rotating plates to rotate. Since the side plate limits the outer end of the rotating plate, the rotating rotating plate uses the connecting rod to move the top frame downward, so that the bottom frame moves upward. The frames moving toward each other cause the top and bottom slides to be squeezed onto the movable racks at the top and bottom of the wiring frame respectively. The movable rack uses the sliding rod to drive the limiting plate close to the inner end of the power plug, and the protrusion of the push plate squeezes the outer end of the card plate. At this time, the card slot of the limiting plate is separated from the inner end of the card plate. The elastic force of the elastic member drives the sliding rods of the two movable racks to slide inside the limiting groove through the card block and the card rod. The movable rack uses the limiting plate to push the power plug out of the wiring frame, thereby completing the separation of the power plug and the wiring frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following is a brief introduction to the drawings required for use in the embodiments or related technical descriptions. The drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] FIG1 is a schematic diagram of the overall structure of a photovoltaic power station inverter cluster control device according to an embodiment of the present application;

[0022] FIG2 is a schematic diagram of the internal structure of a photovoltaic power station inverter cluster control device according to an embodiment of the present application;

[0023] FIG3 is a schematic structural diagram of the cooperation of the sliding frame, movable frame, clamping plate and screw rod of the photovoltaic power station inverter cluster control device according to an embodiment of the present application;

[0024] FIG4 is a schematic diagram of the internal structure of the photovoltaic power station inverter cluster adjustment device from another angle according to an embodiment of the present application;

[0025] FIG5 is a schematic structural diagram of the connection frame and power plug of the photovoltaic power station inverter cluster control device according to an embodiment of the present application;

[0026] In the figure: 1. inverter; 2. housing; 3. vertical rod; 4. slide; 5. movable frame; 6. clamping plate; 7. screw; 8. wiring frame; 9. power plug; 10. sealing plate; 11. side plate; 12. elastic plate; 13. rotating plate; 14. connecting rod; 15. slide plate; 16. pressure plate; 17. inclined plate; 18. rubber sheet; 19. limiting groove; 20. limiting plate; 21. push plate; 22. slide rod; 23. clamping rod; 24. spring; 25. clamping block; 26. cross bar; 27. elastic member; 28. clamping plate; 29. ​​clamping groove; 41. nut; 42. slide groove; 51. side groove; 61. screw groove; 201. notch; 31. protruding rod; 211. protruding block. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present application, the present application is described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments described are only a portion of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0028] A photovoltaic power station inverter cluster control device provided in the embodiment of the present application, as shown in Figures 1 to 4, includes an inverter 1 and a shell 2 on the outside of the inverter 1, vertical rods 3 are vertically fixed at the four corners inside the shell 2, slides 4 are provided on both sides of the inside of the shell 2, and the two ends of the slide 4 are respectively slidably sleeved on the surfaces of the two vertical rods 3, and nuts 41 are provided on the top and bottom surfaces of the slide 4, and the nuts 41 are spirally sleeved on the surfaces of the vertical rods 3, the inner side of the slide 4 is provided with a slide groove 42, and the inner side of the slide groove 42 is slidably clamped with a movable frame 5 that limits the inverter 1, and the slide 4 is used to A movable frame 5 is used to limit the side of the inverter 1. The movable frame 5 is vertically arranged, and a side groove 51 is provided on the inner side of the movable frame 5. A clamping plate 6 is provided on the top and bottom surfaces of the inverter 1. The two ends of the clamping plate 6 are respectively located in the side grooves 51 of the two movable frames 5. A screw 7 that spirally passes through the ends of the two clamping plates 6 is provided inside the side grooves 51. The ends of the clamping plates 6 are provided with screw grooves 61 that correspond to the screw 7. The screw grooves 61 at the ends of the clamping plates 6 at the top and bottom of the inverter 1 have opposite thread directions. When the screw 7 is rotated, the spiral cooperation between the screw 7 and the two clamping plates 6 makes the two clamping plates 6 approach or move away from each other. Rotate the screw 7 synchronously, and the spiral action of the screw 7 and the end of the splint 6 increases the distance between the top splint 6 and the bottom splint 6, and place the inverter 1 on the top of the bottom splint 6. Rotate the screw 7 in the opposite direction, and the spiral action of the screw 7 and the end of the splint 6 brings the top splint 6 and the bottom splint 6 closer to each other, and use the clamping of the splint 6 to complete the preliminary definition of the inverter 1.

[0029] The inverter 1 is provided with a wiring frame 8 on both the front and rear sides. The inverter 1 utilizes two wiring frames 8 to connect to external power plugs 9, which are respectively configured to connect to the input power device and the output power device. Closing plates 10 are mounted on the front and rear sides of the housing 2 using screws, and openings corresponding to the power plugs 9 are provided at the center of the closing plates 10. Nuts 41 on the surface of the vertical rods 3 are rotated, and the screwing action of the nuts 41 and the vertical rods 3 drives the slide 4 to move up and down on the surface of the vertical rods 3. The slide 4 is restrained by the movable frame 5 and the clamping plate 6. During movement, the slide 4 drives the inverter 1 up and down inside the housing 2, so that the positions of the wiring frames 8 at the front and rear ends of the inverter 1 correspond to the openings of the closing plates 10. The two closing plates 10 are respectively mounted on the front and rear ends of the housing 2 using multiple screws. The input power device and the output power device are respectively plugged into the interior of the wiring frames 8 at the front and rear ends of the inverter 1 via the two power plugs 9. It can be understood that during the movement, the slide 4 drives the inverter 1 to move up and down inside the casing 2, so that the positions of the wiring frames 8 at the front and rear ends of the inverter 1 correspond to the openings of the cover plate 10 and the two power plugs 9 respectively connected to the two wiring frames 8 can be exposed at the openings of the cover plate 10, wherein the two power plugs 9 are respectively configured to connect the input power device and the output power device.

[0030] After the DC power generated by the photovoltaic power station is stored by the input power device, the input power device inputs the DC power into the inverter 1 through the power plug 9. After the inverter 1 converts the DC power into frequency-modulated and voltage-regulated AC power, it transmits the frequency-modulated and voltage-regulated AC power to the output power device through another power plug 9. Inverter 1 is externally connected to a cluster monitoring device, which regulates the DC power generated by the photovoltaic power station based on the frequency-modulated and voltage-regulated AC power generated by inverter 1.

[0031] In Figures 1, 2 and 4, two side panels 11 are oppositely provided on both sides of the shell 2, and frame-shaped elastic plates 12 are installed on the inner sides of the two side panels 11, and the inner sides of the side panels 11 are fitted with the sides of the shell 2 by means of the elastic plates 12. Notches 201 are provided at the centers of both sides of the shell 2, and the outer ends of the two rotating plates 13 are rotated and clamped at the centers of the side panels 11. The two rotating plates 13 correspond to the notches 201 that pass through the shell 2. Connecting rods 14 are provided at the top and bottom of the slide 4, and the inner ends of the two rotating plates 13 are respectively rotated and sleeved on the surfaces of the two connecting rods 14. Slides 15 are fixed at both ends of the connecting rods 14, and the two connecting rods 14 at the top of the slide 4 are fixedly connected by two slides 15. The two connecting rods 14 and the two slides 15 form a frame, and the four corners of the frame are respectively slidably sleeved on the surfaces of the four vertical rods 3. When an external component impacts the side panel 11, the side panel 11 approaches the outer shell 2 under the action of the impact force. In the process of approaching the outer shell 2, the side panel 11 correspondingly squeezes the frame-shaped elastic plate 12, and the elastic plate 12 absorbs the impact force of the external component on the side panel 11, thereby preventing the external component from directly impacting the outer shell 2.

[0032] In Figures 2 and 4 , the side panels 11 and the two connecting rods 14 on one side of the inverter 1 cooperate to define two rotating plates 13. The distance between the inner ends of the two rotating plates 13 is smaller than the distance between their outer ends. When the side panels 11 approach the side of the housing 2, the side panels 11 push the rotating plates 13 to rotate, and the rotating rotating plates 13 bring the two connecting rods 14 on the inverter 1 closer to each other. When the side panels 11 approach the housing 2, the side panels 11 drive the outer ends of the rotating plates 13 to move. Because the side panels 11 define the rotating plates 13, the rotating plates 13 rotate under the drive of the side panels 11. The rotating rotating plates 13, using the connecting rods 14, cause the frame to move along the surface of the vertical rods 3, at which point the top and bottom frames approach each other. When the side panels 11 move away from the housing 2, the elastic force of the elastic plates 12 causes the side panels 11 to pull the outer ends of the rotating plates 13 to move. The rotating rotating plates 13, using the connecting rods 14, cause the frame to move along the surface of the vertical rods 3, at which point the top and bottom frames move away from each other.

[0033] In Figures 1, 2 and 4, a pressure plate 16 is provided on the top of the shell 2, and protruding rods 31 passing through the pressure plate 16 are fixed at the four corners of the top surface of the shell 2. Inclined plates 17 are provided on both sides of the bottom surface of the pressure plate 16. The bottom surfaces of the two inclined plates 17 are respectively attached to the tops of the two side plates 11. When the pressure plate 16 is pushed downward, the pressure plate 16 uses the two inclined plates 17 to push the two side plates 11 close to the shell 2. A plurality of rubber sheets 18 arranged equidistantly and parallelly are fixed on the bottom surface of the pressure plate 16. When the housing 2 is impacted during the operation of the inverter 1, the impact causes the pressure plate 16 to move downward. The downward movement of the pressure plate 16 drives the two side plates 11 to gradually approach the housing 2 using the inclined plate 17. In the process of the pressure plate 16 approaching the housing 2, the pressure plate 16 correspondingly squeezes the rubber sheet 18, and in the process of the side plate 11 approaching the housing 2, the side plate 11 correspondingly squeezes the elastic plate 12. The rubber sheet 18 and the elastic plate 12 absorb the impact force received by the pressure plate 16, thereby preventing the impact force from directly impacting the surface of the housing 2, thereby improving the protectiveness of the housing 2.

[0034] In Figures 1 and 5, the top and bottom surfaces of the wiring frame 8 are each provided with two opposing limiting grooves 19. The top and bottom surfaces of the wiring frame 8 are both movably connected to a movable frame using the limiting grooves 19. The movable frame includes a limiting plate 20 and a push plate 21. The limiting plate 20 is located inside the wiring frame 8, and the push plate 21 is located outside the wiring frame 8. A slide bar 22 that slidably cooperates with the limiting grooves 19 is fixed between the limiting plate 20 and the push plate 21. The top and bottom of the inner end surface of the power plug 9 correspond to the two limiting plates 20, respectively, and the two slides 15 at the top and bottom of the front side of the inverter 1 correspond to the two push plates 21 at the top and bottom of the wiring frame 8, respectively. When the power plug 9 is inserted into the wiring frame 8, the top and bottom of the inner end of the power plug 9 drive the top and bottom movable frames to move, respectively, and the movable frame moves inside the limiting grooves 19 of the wiring frame 8 using the slide bar 22.

[0035] The wiring frame 8 is internally provided with a clamping rod 23 on both sides thereof, which passes through the ends of the limiting plate 20. A spring 24 is sleeved on the surface of the clamping rod 23, and the two limiting plates 20 are connected by the spring 24. A clamping block 25 is fixed at the center of the clamping rod 23, which limits the center of the spring 24. A crossbar 26 is fixed on both sides thereof, which passes through the center of the clamping block 25. An elastic member 27 is sleeved on the surface of the crossbar 26. When the power plug 9 enters the wiring frame 8, the power plug 9 uses the two limiting plates 20 to push the clamping rod 23 and the clamping block 25 to slide on the surface of the crossbar 26. Due to the restriction of the two movable frames by the spring 24, the limiting plates 20 of the two movable frames are respectively located at the top and bottom of the inner side of the wiring frame 8. When the two movable frames move synchronously, the two movable frames drive the clamping rod 23 and the clamping block 25 to slide on the surface of the crossbar 26. The crossbar 26 is used to restrict the clamping block 25, and the limiting groove 19 is used to restrict the clamping rod 23, thereby preventing the movable frames from deflecting or rotating during movement.

[0036] In Figures 1 and 5, the top and bottom of the wiring frame 8 are hinged with a card plate 28, and the two side surfaces of the card plate 28 are connected to the wiring frame 8 by a torsion spring. The inner ends of the two card plates 28 correspond to the two limiting plates 20 respectively. The limiting plates 20 are provided with a card slot 29 corresponding to the inner end of the card plate 28. When the power plug 9 is connected to the inverter 1, the inner end of the card plate 28 is correspondingly buckled in the inner side of the card slot 29, and the limiting plate 20 is fixed with a protrusion 211 corresponding to the outer end of the card plate 28. The movable frame uses the block 25 at the center of the card rod 23 to squeeze the elastic member 27 on the surface of the cross bar 26 until the power plug 9 is connected to the power socket of the inverter 1. The limiting plate 20 of the movable frame drives the inner end of the card plate 28 to rotate when it moves. When the card plate 28 rotates, the torsion spring is twisted until the inner end of the card plate 28 corresponds to the position of the card slot 29. The twisting force of the torsion spring causes the card plate 28 to rotate in the opposite direction. The inner end of the card plate 28 is correspondingly buckled in the inside of the card slot 29. The buckle cooperation between the card plate 28 and the card slot 29 ensures the stability of the connection between the power plug 9 and the power socket of the inverter 1.

[0037] When the side panel 11 approaches the outer shell 2, the movement of the side panel 11 drives the two rotating plates 13 to rotate. Since the side panel 11 limits the outer end of the rotating plate 13, the rotating rotating plate 13 uses the connecting rod 14 to move the top frame downward, so that the bottom frame moves upward. The frames moving toward each other cause the top and bottom slides 15 to be squeezed onto the movable racks at the top and bottom of the wiring frame 8 respectively. The movable rack uses the sliding rod 22 to drive the limiting plate 20 close to the inner end of the power plug 9, and the protrusion 211 of the push plate 21 squeezes the outer end of the card plate 28. At this time, the card slot 29 of the limiting plate 20 is separated from the inner end of the card plate 28. The elastic force of the elastic member 27 drives the slide bars 22 of the two movable racks to slide inside the limiting groove 19 through the card block 25 and the card rod 23. The movable rack uses the limiting plate 20 to push the power plug 9 out of the wiring frame 8, completing the separation of the power plug 9 and the wiring frame 8.

[0038] When the inverter 1 is damaged by an impact, the elastic force of the elastic member 27 is used to conveniently separate the power plug 9 from the inverter 1, thereby preventing the inverter 1 from being overloaded and burned when the input power device inputs DC power into the inverter 1.

[0039] The present application also provides a photovoltaic power station inverter cluster control method, which uses the photovoltaic power station inverter cluster control device described above, and as shown in Figures 1 to 5, includes the following steps:

[0040] S1. Synchronously rotate the screw 7. The spiral action of the screw 7 and the end of the clamping plate 6 increases the distance between the top clamping plate 6 and the bottom clamping plate 6. Place the inverter 1 on top of the bottom clamping plate 6. Rotate the screw 7 in the opposite direction. The spiral action of the screw 7 and the end of the clamping plate 6 brings the top clamping plate 6 and the bottom clamping plate 6 closer to each other. The initial confinement of the inverter 1 is completed by the clamping of the clamping plate 6.

[0041] S2. Rotate the nut 41 on the surface of the vertical rod 3, and use the spiral action of the nut 41 and the vertical rod 3 to drive the slide 4 to move up and down on the surface of the vertical rod 3. The slide 4 uses the movable frame 5 and the clamping plate 6 to limit the inverter 1. During the movement, the slide 4 drives the inverter 1 to move up and down on the inside of the shell 2, so that the positions of the wiring frames 8 at the front and rear ends of the inverter 1 correspond to the openings of the cover plate 10, and the input power device and the output power device are respectively plugged into the inside of the wiring frames 8 at the front and rear ends of the inverter 1 through two power plugs 9; it can be understood that, during the movement, the slide 4 drives the inverter 1 to move up and down on the inside of the shell 2, so that the positions of the wiring frames 8 at the front and rear ends of the inverter 1 correspond to the openings of the cover plate 10 and the two power plugs 9 respectively connected to the two wiring frames 8 can be exposed at the openings of the cover plate 10, wherein the two power plugs 9 are respectively configured to connect the input power device and the output power device;

[0042] S3. After the DC power generated by the photovoltaic power station is stored by the input power supply device, the input power supply device inputs the DC power into the inverter 1 through the power plug 9. The inverter 1 converts the DC power into frequency-modulated and voltage-regulated AC power, and then transmits the frequency-modulated and voltage-regulated AC power to the output power supply device through another power plug 9. The inverter 1 is externally connected to a cluster monitoring device, which regulates the DC power generated by the photovoltaic power station based on the frequency-modulated and voltage-regulated AC power generated by the inverter 1.

[0043] S4. When the housing 2 is impacted during the operation of the inverter 1, the impact causes the pressure plate 16 to move downward, and the inclined plate 17 drives the two side plates 11 to gradually approach the housing 2. As the pressure plate 16 approaches the housing 2, the pressure plate 16 correspondingly squeezes the rubber sheet 18, and as the side plates 11 approach the housing 2, the side plates 11 correspondingly squeeze the elastic plates 12. The rubber sheet 18 and the elastic plates 12 absorb the impact force on the pressure plate 16, preventing the impact force from directly impacting the surface of the housing 2.

[0044] S5. When the side panel 11 approaches the outer shell 2, the movement of the side panel 11 drives the two rotating plates 13 to rotate. Since the side panel 11 limits the outer end of the rotating plate 13, the rotating rotating plate 13 uses the connecting rod 14 to move the top frame downward, so that the bottom frame moves upward. The frames moving toward each other make the top and bottom slides 15 squeezed on the movable racks at the top and bottom of the wiring frame 8 respectively. The movable rack uses the sliding rod 22 to drive the limiting plate 20 close to the inner end of the power plug 9, and the protrusion 211 of the push plate 21 squeezes the outer end of the card plate 28. At this time, the card slot 29 of the limiting plate 20 is separated from the inner end of the card plate 28. The elastic force of the elastic member 27 drives the slide bars 22 of the two movable racks to slide inside the limiting groove 19 through the card block 25 and the card rod 23. The movable rack uses the limiting plate 20 to push the power plug 9 out of the wiring frame 8, completing the separation of the power plug 9 and the wiring frame 8.

[0045] The embodiments of the present application have the following advantages:

[0046] 1. When the housing in the present application is impacted during the operation of the inverter, the impact causes the pressure plate to move downward, and the downward movement of the pressure plate drives the two side plates to gradually approach the housing by using the inclined plate. In the process of the pressure plate approaching the housing, the pressure plate correspondingly squeezes the rubber sheet, and in the process of the side plate approaching the housing, the side plate correspondingly squeezes the elastic plate. The rubber sheet and the elastic plate are used to absorb the impact force received by the pressure plate to prevent the impact force from directly impacting the surface of the housing. The housing is used to protect the inverter to prevent the inverter from being damaged by the impact force.

[0047] 2. When the side plate in the present application is close to the outer shell, the movement of the side plate drives the two rotating plates to rotate, and the rotation of the rotating plates causes the two frame shapes to move toward each other, thereby causing the top and bottom slides to be squeezed on the movable racks at the top and bottom of the wiring frame respectively. The movable rack uses the sliding rod to drive the limiting plate close to the inner end of the power plug, and the protrusion of the push plate squeezes the outer end of the card plate. At this time, the card slot of the limiting plate is separated from the inner end of the card plate, and the elastic force of the elastic member drives the sliding rods of the two movable racks to slide inside the limiting groove through the card block and the card rod. The movable rack uses the limiting plate to push the power plug out of the wiring frame, completing the separation of the power plug and the wiring frame. When the inverter is damaged by impact, the elastic force of the elastic member is used to conveniently separate the power plug from the inverter, thereby avoiding the inverter overload and burning caused by the input power equipment inputting DC power into the inverter.

[0048] 3. The mobile rack in the present application utilizes the card block at the center of the card rod to squeeze the elastic part on the surface of the cross bar until the power plug is connected to the power socket of the inverter. The limiting plate of the mobile rack drives the inner end of the card plate to rotate when it moves. When the card plate rotates, the torsion spring is twisted until the inner end of the card plate corresponds to the position of the card slot. The twisting force of the torsion spring causes the card plate to rotate in the opposite direction. The inner end of the card plate is correspondingly buckled inside the card slot. The buckle cooperation between the card plate and the card slot ensures the stability of the connection between the power plug and the power socket of the inverter; and the cross bar is used to limit the card block, and the limiting slot is used to limit the card rod to avoid displacement or rotation of the mobile rack during movement.

[0049] The above is a detailed introduction to a photovoltaic power station inverter cluster control method and device provided by the present application. For those skilled in the art, according to the ideas of the embodiments of the present application, there may be changes in the specific implementation methods and application scope.

Claims

1. A photovoltaic power station inverter cluster control device, comprising an inverter (1) and a housing (2) located outside the inverter (1), wherein: Vertical rods (3) are vertically fixed at the four corners inside the shell (2), and slides (4) are arranged on both sides inside the shell (2), and the two ends of the slides (4) are respectively slidably sleeved on the surfaces of the two vertical rods (3), and nuts (41) are arranged on the top and bottom surfaces of the slides (4), and the nuts (41) are spirally sleeved on the surfaces of the vertical rods (3). The inner side surface of the slide (4) is provided with a slide groove (42), and the inner side of the slide groove (42) is slidably clamped with a movable frame (5) that limits the inverter (1), and the slide (4) is correspondingly limited to the side of the inverter (1) by the movable frame (5), and the movable frame (5) is arranged vertically, and the inner side surface of the movable frame (5) is provided with a side groove (51), and the top and bottom surfaces of the inverter (1) are provided with a clamping plate (6), and the two ends of the clamping plate (6) are respectively located in the side grooves (51) of the two movable frames (5). ), the side groove (51) is provided with a screw rod (7) that spirally penetrates the ends of the two clamping plates (6), and the ends of the clamping plates (6) are provided with screw grooves (61) that match the screw rod (7). The screw grooves (61) at the ends of the clamping plates (6) at the top and bottom of the inverter (1) have opposite thread directions. When the screw rod (7) is rotated, the screw rod (7) and the two clamping plates (6) are spirally matched to make the two clamping plates (6) approach or move away from each other. The front and rear sides of the inverter (1) are provided with wiring frames (8), and the inverter (1) uses the two wiring frames (8) to connect external power plugs (9). The two power plugs (9) are respectively provided to connect input power equipment and output power equipment. The front and rear sides of the housing (2) are both installed with sealing plates (10) by means of screws, and a through hole corresponding to the power plug (9) is provided at the center of the sealing plate (10).

2. The photovoltaic power station inverter cluster control device according to claim 1, wherein: Two side plates (11) are arranged opposite to each other on the two side surfaces of the shell (2), frame-shaped elastic plates (12) are installed on the inner sides of the two side plates (11), and the inner sides of the side plates (11) are fitted with the side surfaces of the shell (2) by means of the elastic plates (12), notches (201) are arranged at the centers of the two side surfaces of the shell (2), the outer ends of the two rotating plates (13) are rotatably clamped at the centers of the side plates (11), and the two rotating plates (13) correspond to the notches (201) penetrating the shell (2), and the top and bottom of the slide (4) are provided with connecting rods (14), the inner ends of the two rotating plates (13) are respectively rotatably sleeved on the surfaces of the two connecting rods (14), and slide plates (15) are fixed on both ends of the connecting rods (14), and the two connecting rods (14) at the top of the slide (4) are fixedly connected by means of the two slide plates (15), the two connecting rods (14) and the two slide plates (15) form a frame, and the four corners of the frame are respectively slidably sleeved on the surfaces of the four vertical rods (3).

3. The photovoltaic power station inverter cluster control device according to claim 2, wherein: The side plate (11) and two connecting rods (14) on one side of the inverter (1) cooperate to define two rotating plates (13); the distance between the inner ends of the two rotating plates (13) is smaller than the distance between the outer ends thereof; when the side plate (11) approaches the side of the housing (2), the side plate (11) pushes the rotating plate (13) to rotate; the rotating rotating plate (13) causes the two connecting rods (14) on one side of the inverter (1) to approach each other.

4. The photovoltaic power station inverter cluster control device according to claim 3, wherein: A pressure plate (16) is arranged on the top of the shell (2), and protruding rods (31) penetrating the pressure plate (16) are fixed at the four corners of the top surface of the shell (2). Inclined plates (17) are arranged on both sides of the bottom surface of the pressure plate (16), and the bottom surfaces of the two inclined plates (17) are respectively attached to the tops of the two side plates (11). When the pressure plate (16) is pushed downward, the pressure plate (16) uses the two inclined plates (17) to push the two side plates (11) closer to the shell (2), and a plurality of rubber sheets (18) arranged in parallel and at equal distances are fixed to the bottom surface of the pressure plate (16).

5. The photovoltaic power station inverter cluster control device according to claim 4, wherein: The top and bottom surfaces of the wiring frame (8) are both provided with two opposite limiting grooves (19); the top and bottom of the wiring frame (8) are both movably connected with a movable frame by utilizing the limiting grooves (19); the movable frame comprises a limiting plate (20) and a push plate (21); the limiting plate (20) is located inside the wiring frame (8); the push plate (21) is located outside the wiring frame (8); a slide bar (22) that slidably cooperates with the limiting grooves (19) is fixed between the limiting plate (20) and the push plate (21); the top and bottom of the inner end surface of the power plug (9) correspond to the two limiting plates (20) respectively, and the two slide plates (15) at the top and bottom of the front side end of the inverter (1) correspond to the two push plates (21) at the top and bottom of the wiring frame (8) respectively.

6. The photovoltaic power station inverter cluster control device according to claim 5, wherein: A clamping rod (23) penetrating the two ends of the limiting plate (20) is arranged on both sides of the wiring frame (8), a spring (24) is sleeved on the surface of the clamping rod (23), and the two limiting plates (20) are connected by the spring (24), a clamping block (25) at the center of the limiting spring (24) is fixed at the center of the clamping rod (23), a cross bar (26) penetrating the center of the clamping block (25) is fixed on both sides of the wiring frame (8), an elastic member (27) is sleeved on the surface of the cross bar (26), and when the power plug (9) enters the wiring frame (8), the power plug (9) uses the two limiting plates (20) to push the clamping rod (23) and the clamping block (25) to slide on the surface of the cross bar (26).

7. The photovoltaic power station inverter cluster control device according to claim 6, wherein: The top and bottom of the wiring frame (8) are both hingedly connected with a card plate (28), and the two side surfaces of the card plate (28) are connected to the wiring frame (8) by means of a torsion spring. The inner ends of the two card plates (28) correspond to the two limiting plates (20) respectively, and the limiting plates (20) are provided with a card slot (29) corresponding to the inner end of the card plate (28). When the power plug (9) is connected to the inverter (1), the inner end of the card plate (28) is correspondingly buckled in the inner side of the card slot (29), and a protrusion (211) corresponding to the outer end of the card plate (28) is fixed on the limiting plate (20).

8. A photovoltaic power station inverter cluster control method, the method being applied to the photovoltaic power station inverter cluster control device according to claim 7, comprising: The screw rod (7) is rotated synchronously, and the spiral action of the screw rod (7) and the end of the clamping plate (6) increases the distance between the top clamping plate (6) and the bottom clamping plate (6), and the inverter (1) is placed on the top of the bottom clamping plate (6) accordingly. The screw rod (7) is rotated in the opposite direction, and the spiral action of the screw rod (7) and the end of the clamping plate (6) causes the top clamping plate (6) and the bottom clamping plate (6) to approach each other, and the initial restriction of the inverter (1) is completed by clamping the clamping plate (6); The nut (41) on the surface of the vertical rod (3) is rotated to drive the slide (4) to move up and down on the surface of the vertical rod (3). The movable frame (5) and the clamping plate (6) are used to limit the inverter (1). During the movement of the slide (4), the slide (4) drives the inverter (1) to move up and down inside the housing (2), so that the positions of the wiring frames (8) at the front and rear ends of the inverter (1) correspond to the openings of the sealing plate (10) and the two power plugs (9) respectively connected to the two wiring frames (8) can be exposed at the openings of the sealing plate (10), wherein the two power plugs (9) are respectively configured to connect an input power device and an output power device; After the direct current generated by the photovoltaic power station is stored by the input power supply device, the input power supply device inputs the direct current into the inverter (1) through a power plug (9). After the inverter (1) converts the direct current into frequency-modulated and voltage-regulated alternating current, the frequency-modulated and voltage-regulated alternating current is transmitted to the output power supply device through another power plug (9). The inverter (1) is externally connected to a cluster monitoring device, and the cluster monitoring device regulates the direct current generated by the photovoltaic power station according to the frequency-modulated and voltage-regulated alternating current generated by the inverter (1); When the housing (2) is impacted during the operation of the inverter (1), the pressure plate (16) moves downward to approach the housing (2), and the inclined plate (17) drives the two side plates (11) to gradually approach the housing (2). When the pressure plate (16) approaches the housing (2), the pressure plate (16) correspondingly squeezes the rubber sheet (18), and when the side plate (11) approaches the housing (2), the side plate (11) correspondingly squeezes the elastic plate (12). The rubber sheet (18) and the elastic plate (12) absorb the impact force on the pressure plate (16), thereby preventing the impact force from directly impacting the surface of the housing (2). When the side plate (11) approaches the housing (2), the movement of the side plate (11) drives the two rotating plates (13) to rotate. Since the side plate (11) limits the outer end of the rotating plate (13), the rotating rotating plate (13) uses the connecting rod (14) to move the top frame downward and the bottom frame upward. The frames moving toward each other cause the top and bottom slide plates (15) to be pressed against the top and bottom moving frames of the wiring frame (8) respectively. The moving frames use the sliding rod (22) to drive the limiting plate (20) close to the power plug. (9) inner end, and the protrusion (211) of the push plate (21) presses the outer end of the card plate (28), at which time the card slot (29) of the limiting plate (20) is separated from the inner end of the card plate (28), and the elastic force of the elastic member (27) drives the slide bars (22) of the two moving frames to slide inside the limiting groove (19) through the card block (25) and the card rod (23), and the moving frame uses the limiting plate (20) to push the power plug (9) out of the wiring frame (8), thereby completing the separation of the power plug (9) and the wiring frame (8).

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