A prefabricated substation with AC / DC hybrid power distribution and energy mutual assistance

Abstract

This invention relates to the field of AC / DC hybrid power distribution technology, specifically to a hybrid AC / DC power distribution power mutual assistance type box-type substation, comprising a housing, a mutual assistance control unit disposed at the lower part of the housing, and a mutual assistance power unit disposed above the mutual assistance control unit inside the housing. By using a pressure block positioned below a base plate, the pressure block moves downwards with the base plate, thereby fixing the photovoltaic wires inside the connecting pipe. This prevents unstable connections of the photovoltaic wires inside the connecting pipe, which could cause them to slip out. Correspondingly, the pressure block firmly fixes the photovoltaic wires inside the connecting pipe, increasing the stability of the connecting pipe, reducing voltage instability caused by weak connections between the photovoltaic wires and the connecting pipe, decreasing contact resistance, improving the power generation efficiency of the photovoltaic system, and enabling efficient transmission and utilization of electrical energy.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of AC / DC hybrid power distribution, and particularly relates to an AC / DC hybrid power distribution energy interconnection type box-type substation. BACKGROUND

[0002] The AC / DC hybrid power distribution energy interconnection type box-type substation is a new type of box-type substation integrating AC and DC power distribution functions and having an energy interconnection capability, which can flexibly adapt to various application scenarios such as distributed energy access, electric vehicle charging, energy storage systems, and the like, and improve power supply reliability and energy utilization efficiency.

[0003] By using new technologies of power electronic devices, AC / DC and DC / DC type power electronic devices are used to construct a DC power distribution network, and distributed power sources, microgrids, energy storage and charging facilities, data centers and other DC type loads are more flexibly connected in the DC system, so that current sources such as photovoltaic power generation or energy storage can be quickly charged and discharged, and the load power balance of double transformer areas can be maintained.

[0004] However, the following problems still exist when the traditional device is used:

[0005] Patent application No. CN113488320B discloses a high-low voltage transformer with high safety protection, which is beneficial to realize heat dissipation control of the winding, and the iron core body can enter the transformer heat dissipation oil through the two side openings, and the heat dissipation treatment of the winding and the iron core body is ensured through the cooperation of the multiple insertion spacers, so that the heat dissipation adjustment capability of the iron core mechanism and the winding can be effectively improved, and the subsequent maintenance universality is realized through the adjustable insertion spacers, and the disassembly and maintenance efficiency is improved.

[0006] In the prior art, when the photovoltaic line is inserted into the connection pipe of the box-type substation, if the photovoltaic line is not firmly connected with the connection pipe, the contact area between the photovoltaic line and the connection pipe will be reduced, the contact resistance will be significantly increased, thereby causing additional power loss, reducing the power generation efficiency of the photovoltaic system, and affecting the effective transmission and utilization of electric energy.

[0007] Therefore, we need an AC / DC hybrid power distribution energy interconnection type box-type substation to solve the problem of power loss caused by the insecure connection between the photovoltaic line and the connection pipe, which can reduce the loss of electric energy. SUMMARY

[0008] In view of the deficiencies in the prior art, the purpose of the present application is to provide an AC / DC hybrid power distribution energy interconnection type box-type substation, which has the advantage of reducing power loss.

[0009] In order to achieve the above object, the present application provides the following technical scheme: including the shell, the shell, the lower part of the inside of the shell is provided with mutual aid control unit, the inside of the shell is located above the mutual aid control unit and is provided with mutual aid power unit, the back of the mutual aid power unit is connected with the back of the mutual aid control unit by wire, the outer wall of the back of the mutual aid power unit is fixedly connected with the bus, the outer wall of the back of the shell is fixedly connected with the connecting assembly one at the position of the bus, the outer wall of the back of the shell is fixedly connected with the connecting assembly two at one side of the connecting assembly one, the inside of the connecting assembly one is fixedly connected with the connecting pipe, the outer wall of the connecting pipe is connected with the inside of the shell, one end of the inside of the connecting pipe is fixedly connected with one end of the bus, the connecting assembly one is provided with a fixing mechanism, the other end of the inside of the connecting pipe is movably inserted with the photovoltaic wire, the outer wall of the connecting assembly one is provided with a protection mechanism, the fixing mechanism comprises a threaded rod, the outer wall of the threaded rod is threadedly connected with the inside of the top of the connecting assembly one, the protection mechanism comprises a mounting seat one, the outer wall of the opposite side of the two mounting seat ones is fixedly connected with the outer wall of the connecting assembly one.

[0010] Preferably, the inside of the mounting seat one is slidably connected with a sliding block, the outer wall of the top of the sliding block is fixedly connected with a shielding plate, the outer wall of one side of the shielding plate is fixedly connected with an expansion plate, and the outer wall of the bottom of the shielding plate is fixedly connected with a connecting rod one at the position close to the expansion plate.

[0011] Preferably, the outer wall of the top of the connecting assembly one is fixedly connected with a mounting seat two, the inside of the mounting seat two is slidably connected with a connecting rod two, the outer wall of one side of the connecting rod two is fixedly connected with a rack, and the outer wall of the top of the connecting rod two is fixedly connected with the outer wall of the bottom of the connecting rod one.

[0012] Preferably, the outer wall of the top of the threaded rod is fixedly connected with a gear one, the bottom of the threaded rod is rotatably connected with a base, the outer wall of the base is fixedly connected with a bottom plate, the outer wall of the bottom of the bottom plate is movably contacted with a pressing block, the inside of the threaded rod is slidably connected with a fixing rod, and the outer wall of the gear one is meshedly connected with the inner wall of the rack.

[0013] Preferably, the inner wall of one side of the mounting seat one is movably inserted with a inserting rod one, the inner wall of one side of the inserting rod one is fixedly connected with a return spring one, the outer wall of one end of the return spring one is fixedly connected with the inner wall of one side of the mounting seat one, the inner wall of one side of the sliding block is provided with an insertion hole one at the position of the inserting rod one, and the inside of the insertion hole one is movably inserted with the outer wall of one end of the inserting rod one.

[0014] Preferably, a strip-shaped groove is formed in the bottom plate, a sliding strip is slidably connected in the inside of the strip-shaped groove, and the outer wall of the bottom of the sliding strip is fixedly connected with the outer wall of the top of the pressing block.

[0015] Preferably, the outer wall of the fixed rod is provided with a square slot, a square plate is slidably connected in the square slot, the outer wall of both ends of the square plate is fixedly connected with the inner part of the fixed rod, the outer wall of the bottom of the square plate is fixedly connected with a third pushing spring, the outer wall of the bottom of the third pushing spring is fixedly connected with the lower part of the inner wall of the square slot, the outer wall of the top of the pressing block is provided with a fixed hole, and the outer wall of the bottom of the fixed rod is movably inserted into the inner part of the fixed hole.

[0016] Preferably, the inner part of the gear one is fixedly connected with a second reset spring, the outer wall of one end of the second reset spring is fixedly connected with a second inserting rod, the outer wall of one side of the fixed rod is provided with a second inserting hole, and the outer wall of one end of the second inserting rod penetrates through the inner part of the fixed rod and is movably inserted into the inner part of the second inserting hole.

[0017] Preferably, the outer wall of the gear one is meshingly connected with an accelerating wheel, the position of the shaft center of the accelerating wheel is fixedly connected with a first supporting rod, the outer wall of the bottom of the first supporting rod is rotatably connected with the outer wall of the top of the connecting assembly one, the outer wall of one side of the accelerating wheel is meshingly connected with a third gear, the position of the shaft center of the third gear is fixedly connected with a second supporting rod, the outer wall of the front of the connecting assembly one is fixedly connected with a mounting bracket, the inner part of the mounting bracket is rotatably connected with the outer wall of the second supporting rod, and the outer wall of the front of the connecting assembly one is fixedly connected with a sealing sleeve.

[0018] Preferably, one end of the inner part of the sealing sleeve is fixedly connected with a tension strip, the outer wall of the tension strip is slidably connected with the inner part of the mounting bracket, the outer wall of the second gear is fixedly connected with the outer wall of the bottom of the second supporting rod, the inner wall of one side of the tension strip is provided with a square hole, and the outer wall of the second gear is movably inserted into the inner part of the square hole.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] By arranging the pressing block below the bottom plate, the pressing block can be driven to move downward with the bottom plate, thereby fixing the photovoltaic wire inside the connecting pipe, avoiding unstable connection of the photovoltaic wire inside the connecting pipe, causing the photovoltaic wire to slide out of the connecting pipe, and correspondingly fixing the photovoltaic wire by the pressing block, thereby stably fixing the photovoltaic wire inside the connecting pipe, increasing the stability of the connecting pipe, reducing unstable connection between the photovoltaic wire and the connecting pipe, causing unstable voltage, reducing the increase of contact resistance, improving the power generation efficiency of the photovoltaic system, and effectively transmitting and utilizing electric energy. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure of the present application is shown in the figure.

[0022] Figure 2 The structure of the back of the shell of the present application is shown in the figure.

[0023] Figure 3 Schematic diagram of the internal structure of the shell of the present application.

[0024] Figure 4 Schematic diagram of the side structure of the shell of the present application.

[0025] Figure 5 Schematic diagram of the Figure 4 Schematic diagram of the enlarged structure at A.

[0026] Figure 6 Schematic diagram of the connecting assembly of the present application.

[0027] Figure 7 Schematic diagram of the controller of the present application.

[0028] Figure 8 Schematic diagram of the insertion rod of the present application.

[0029] Figure 9 Schematic diagram of the top structure of the connecting assembly of the present application.

[0030] Figure 10 Schematic diagram of the Figure 9 Schematic diagram of the enlarged structure at B.

[0031] Figure 11 Schematic diagram of the front structure of the connecting assembly of the present application.

[0032] Figure 12 Schematic diagram of the connecting pipe of the present application.

[0033] Figure 13 Schematic diagram of the Figure 12 Schematic diagram of the enlarged structure at C.

[0034] Figure 14 Schematic diagram of the cross-section of the sealing sleeve of the present application.

[0035] Figure 15 Schematic diagram of the cross-section of the threaded rod of the present application.

[0036] Figure 16 Schematic diagram of the electric push rod of the present application.

[0037] In the figure: 1, the shell; 11, mutual power unit; 12, bus; 13, mutual control unit; 2, connecting assembly one; 21, photovoltaic line; 22, connecting pipe; 3, connecting assembly two; 4, mounting seat one; 41, shielding plate; 411, plug rod one; 412, plug hole one; 413, reset spring one; 42, connecting rod one; 43, rack; 44, expansion plate; 45, sliding block; 46, mounting seat two; 47, connecting rod two; 5, threaded rod; 51, gear one; 52, pressing block; 521, sliding bar; 522, strip-shaped groove; 523, bottom plate; 6, sealing sleeve; 61, tension bar; 62, accelerating wheel; 63, gear three; 64, support rod one; 65, support rod two; 66, mounting frame; 67, gear two; 68, square hole; 7, controller; 71, photosensitive sensor; 72, conductive spring; 73, conductive plate; 74, insulating rod; 75, push plate; 76, electric push rod; 8, fixed rod; 81, fixed hole; 82, square plate; 83, push spring three; 811, plug hole two; 812, reset spring two; 813, plug rod two. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme of the present application clear, complete description, and the advantages are more clear and obvious, the following combining with the drawings of the present application embodiment is further described in detail. It should be understood that the specific embodiments described here are part of the embodiments of the present application, rather than all the embodiments, only to explain the embodiments of the present application, and not for the purpose of limiting the embodiments of the present application, all other embodiments obtained by the person skilled in the art without doing creative work, belong to the scope of the present application.

[0039] Embodiment one, please refer to Figures 1 to 16The application provides a kind of alternating current and direct current hybrid power distribution electric energy mutual aid type box-type substation technical scheme: including shell 1, shell 1, the lower part of the inside of shell 1 is provided with mutual aid control unit 13, the inside of shell 1 is located above mutual aid control unit 13 and is provided with mutual aid power unit 11, the back of mutual aid power unit 11 is connected with the back of mutual aid control unit 13 by wire, the outer wall of the back of mutual aid power unit 11 is fixedly connected with busbar 12, the outer wall of the back of shell 1 is fixedly connected with connection assembly one 2 at the position of busbar 12, the outer wall of the back of shell 1 is fixedly connected with connection assembly two 3 at one side of connection assembly one 2, connection assembly one 2 is fixedly connected with connecting pipe 22 in the inside, the outer wall of connecting pipe 22 is connected with the inside of shell 1, one end in the inside of connecting pipe 22 is fixedly connected with one end of busbar 12, fixed mechanism is provided on connection assembly one 2, photovoltaic line 21 is movably inserted into the other end in the inside of connecting pipe 22, the outer wall of connection assembly one 2 is provided with protection mechanism, fixed mechanism includes threaded rod 5, the outer wall of threaded rod 5 is screw-connected with the inside of the top of connection assembly one 2, protection mechanism includes mounting seat one 4, the outer wall of the opposite side of two mounting seat one 4 is fixedly connected with the outer wall of connection assembly one 2.

[0040] Direct current electric energy is converted from solar energy by photovoltaic module through photovoltaic effect, and is output through photovoltaic line 21, and then is transmitted to busbar 12 through conductive plate 73 and conductive spring 72 as elastic conductor, to ensure electrical contact between photovoltaic line 21 and busbar 12, reduce contact resistance and energy loss, and transmit direct current electric energy to busbar 12 through conductive spring 72, and busbar 12 is a hub of electric energy distribution, and is responsible for transmitting electric energy to mutual aid power unit 11, and the core of mutual aid power unit 11 is to convert electric energy, and convert direct current into alternating current for power supply.

[0041] In the embodiment two, on the basis of the embodiment one, sliding connection has sliding block 45 in the inside of mounting seat one 4, fixed connection has shielding plate 41 on the top of sliding block 45, fixed connection has telescopic plate 44 on one side of shielding plate 41, fixed connection has connecting rod one 42 on the bottom of shielding plate 41 close to the position of telescopic plate 44, fixed connection has mounting seat two 46 on the top of connection assembly one 2, sliding connection has connecting rod two 47 in the inside of mounting seat two 46, fixed connection has rack 43 on one side of connecting rod two 47, fixed connection has mounting seat two 46 on the top of connecting rod two 47 and the bottom of connecting rod one 42, movable insertion has insertion rod one 411 in the inside of one side of mounting seat one 4, fixed connection has reset spring one 413 on one side of insertion rod one 411, fixed connection has one end of reset spring one 413 and one side of mounting seat one 4, opening has insertion hole one 412 in the inside of one side of sliding block 45 at the position of insertion rod one 411, movable insertion has insertion hole one 412 in the inside and one end of insertion rod one 411.

[0042] The telescopic plate 44 is driven to move on the mounting base one 4 by the shielding plate 41, so that the shortened telescopic plate 44 is elongated, the connecting assembly one 2 is covered by the cooperation of the mounting base one 4 and the telescopic plate 44, the aging of the connecting assembly one 2 is avoided when the connecting assembly one 2 is blown by wind and rained on outdoors, meanwhile, the interface of the photovoltaic wire 21 and the connecting pipe 22 is covered, the rainwater dropping on the interface is reduced, the service life of the connecting assembly one 2 is correspondingly increased, and the safety of the interface is increased.

[0043] When the sliding block 45 is fixed through the fixed connection between the sliding block 45 and the shielding plate 41 and the fixed connection between the shielding plate 41 and the connecting rod two 47, the rack 43 can be fixed, at the moment, the connecting rod two 47 cannot move when the rack 43 is pushed, so that the movement of the rack 43 is limited, the movement of the rack 43 when it is not needed to move is avoided, and the stability of the rack 43 is correspondingly increased.

[0044] In example three, on the basis of example two, the outer wall of the top of the threaded rod 5 is fixedly connected with a gear one 51, the outer wall of the bottom of the threaded rod 5 is rotatably connected with a base, the outer wall of the base is fixedly connected with a bottom plate 523, the outer wall of the bottom of the bottom plate 523 movably contacts a pressing block 52, the inside of the threaded rod 5 is slidably connected with a fixing rod 8, the outer wall of the gear one 51 is meshingly connected with the inner wall of the rack 43, a strip-shaped groove 522 is formed in the bottom plate 523, the inside of the strip-shaped groove 522 is slidably connected with a sliding bar 521, the outer wall of the bottom of the sliding bar 521 is fixedly connected with the outer wall of the top of the pressing block 52, the outer wall of the fixing rod 8 is provided with a square groove, the inside of the square groove is slidably connected with a square plate 82, the outer walls of the two ends of the square plate 82 are fixedly connected with the inside of the fixing rod 8, the outer wall of the bottom of the square plate 82 is fixedly connected with a pushing spring three 83, the outer wall of the bottom of the pushing spring three 83 is fixedly connected with the lower part of the inner wall of the square groove, the outer wall of the top of the pressing block 52 is provided with a fixed hole 81, the outer wall of the bottom of the fixing rod 8 is movably inserted into the inside of the fixed hole 81, the inside of the gear one 51 is fixedly connected with a reset spring two 812, one end of the outer wall of the reset spring two 812 is fixedly connected with a plug rod two 813, the outer wall of one side of the fixing rod 8 is provided with a plug hole two 811, one end of the outer wall of the plug rod two 813 penetrates through the inside of the fixing rod 8 and is movably inserted into the inside of the plug hole two 811.

[0045] The pressing block 52 is arranged below the bottom plate 523, and when the bottom plate 523 moves downward, the pressing block 52 is driven to move downward, thereby fixing the photovoltaic wire 21 in the connecting pipe 22, avoiding unstable connection of the photovoltaic wire 21 in the connecting pipe 22, causing the photovoltaic wire 21 to slide out of the connecting pipe 22, and correspondingly, the photovoltaic wire 21 is fixed in the connecting pipe 22 by the pressing of the pressing block 52, thereby stably fixing the photovoltaic wire 21 in the connecting pipe 22, increasing the stability of the connecting pipe 22, reducing unstable voltage caused by unstable connection between the photovoltaic wire 21 and the connecting pipe 22, reducing the increase of contact resistance, improving the power generation efficiency of the photovoltaic system, and effectively transmitting and utilizing electric energy.

[0046] The pressing block 52 drives the sliding bar 521 to move away from the bottom plate 523, so that the pressing block 52 can be replaced, avoiding aging of the pressing block 52 after long-term use, and correspondingly, the pressing block 52 can always maintain a good working state by replacing the pressing block 52. When the pressing block 52 is replaced, only the insertion rod two 813 needs to be pushed to complete the replacement operation, which is simple and fast and convenient for operators to operate.

[0047] In the fourth embodiment, the outer wall of the gear one 51 is engaged with the acceleration wheel 62, the axis of the acceleration wheel 62 is fixedly connected with the support rod one 64, the outer wall of the bottom of the support rod one 64 is rotatably connected with the top of the outer wall of the connecting assembly one 2, the outer wall of one side of the acceleration wheel 62 is engaged with the gear three 63, the axis of the gear three 63 is fixedly connected with the support rod two 65, the outer wall of the front of the connecting assembly one 2 is fixedly connected with the mounting frame 66, the inside of the mounting frame 66 is rotatably connected with the outer wall of the support rod two 65, the outer wall of the front of the connecting assembly one 2 is fixedly connected with the sealing sleeve 6, one end of the inside of the sealing sleeve 6 is fixedly connected with the tension strip 61, the outer wall of the tension strip 61 is slidably connected with the inside of the mounting frame 66, the outer wall of the bottom of the support rod two 65 is fixedly connected with the gear two 67, the inside of the square hole 68 in the inner wall of the tension strip 61 is movably inserted with the outer wall of the gear two 67.

[0048] The tension strip 61 drives one end of the sealing sleeve 6 to contract, so that the sealing sleeve 6 contacts the outer wall of the photovoltaic wire 21, thereby closing the connecting port of the connecting pipe 22 and the photovoltaic wire 21, avoiding dust entering the inside of the connecting pipe 22, correspondingly preventing the increase of contact resistance caused by dust adhering to the inner wall of the connecting pipe 22, reducing the short circuit caused by dust, thereby improving the power generation efficiency, reducing the maintenance cost, improving the overall economic benefit and safety of the photovoltaic assembly, and only by pushing the gear rack 43 to move, multiple mechanisms can be driven to move simultaneously, thereby reducing the operation time of the operator.

[0049] In example five, on the basis of example one, the outer wall of one end of the busbar 12 is fixedly connected with the conductive spring 72, the outer wall of one end of the conductive spring 72 is fixedly connected with the conductive plate 73, the outer wall of one side of the conductive plate 73 is fixedly connected with the insulating rod 74, the outer wall of one side of the connecting pipe 22 close to the insulating rod 74 is provided with a sliding groove, the inner part of the connecting assembly 2 is fixedly connected with the electric push rod 76, the output end of the electric push rod 76 is fixedly connected with the push plate 75, the outer wall of one end of the push plate 75 is in movable contact with the outer wall of one side of the insulating rod 74, the shape of the insulating rod 74 is L-shaped, the outer wall of one side of the connecting assembly 2 is fixedly connected with the controller 7, and the outer wall of the top of the controller 7 is connected with the photosensitive sensor 71 through wires.

[0050] The conductive plate 73 is separated from one end of the photovoltaic wire 21 by extruding the conductive spring 72, so that the connection between the conductive plate 73 and the photovoltaic wire 21 is disconnected, at this time the connecting assembly two 3 starts to work, this operation is convenient for replacing different power supply systems in daytime and nighttime, avoids that the power grid may supply power to the photovoltaic assembly in reverse through the inverter, causes the photovoltaic assembly to be damaged, correspondingly, the connection between the photovoltaic assembly and the power grid is disconnected in time, the power grid reverse power supply is effectively prevented, the service life of the photovoltaic assembly is prolonged, when the sunlight is sufficient in daytime, the system is automatically switched to the photovoltaic power supply mode, solar power generation is fully utilized, when it is night or the sunlight is insufficient, the system is automatically switched to the standby power supply system, the continuity and stability of power supply are ensured, and the efficiency and reliability of the whole power supply system are improved.

[0051] The working principle and use process of the application are as follows: it should be noted that the AC / DC bidirectional converter is adopted to realize flexible transmission and distribution system of direct current electric energy, and the flexible interconnection technology of distribution network breaks through the limitation of open loop operation of the original low-voltage alternating current distribution system, brings good network connectivity and flexibility of various AC / DC power sources and loads, enhances the control ability of the power grid to random fluctuations, and helps the high-quality development of modern intelligent distribution network.

[0052] In order to increase the photovoltaic collaborative consumption effect, first, the operator inserts the photovoltaic wire 21 into the inner part of the connecting pipe 22, so that one end of the photovoltaic wire 21 is in contact with the conductive plate 73, after the photovoltaic wire 21 is in contact with the conductive plate 73, the photovoltaic assembly and the intelligent power equipment of energy interdependence are connected, at this time, the photovoltaic assembly converts solar energy into direct current electric energy through the photovoltaic effect, outputs the direct current electric energy through the photovoltaic wire 21, and ensures the electrical contact between the photovoltaic wire 21 and the busbar 12 through the conductive plate 73 and the conductive spring 72 as elastic conductors, reduces the contact resistance and energy loss, the conductive spring 72 transmits the direct current electric energy to the busbar 12, the busbar 12 is the hub of electric energy distribution, is responsible for delivering electric energy to the interdependence power unit 11, and the core of the interdependence power unit 11 is to convert electric energy, that is, to convert direct current into alternating current for power supply.

[0053] When the photovoltaic wire 21 is inserted into the inside of the connecting pipe 22, the rack 43 can be pushed inward by the operator, and the gear one 51 is driven to rotate through the meshing connection between the rack 43 and the gear one 51. Then, the threaded rod 5 is driven to rotate through the rotation of the gear one 51, so that the threaded rod 5 moves downward along the thread direction in the connecting assembly one 2. At the same time, the base and the bottom plate 523 are driven to move downward, and the pressing block 52 is arranged below the bottom plate 523, so that the pressing block 52 is driven to move downward when the bottom plate 523 moves downward, thereby fixing the photovoltaic wire 21 in the connecting pipe 22. The photovoltaic wire 21 is not unstable in the connecting pipe 22, and the photovoltaic wire 21 is prevented from sliding out of the connecting pipe 22. Correspondingly, the photovoltaic wire 21 is fixed by the pressing block 52, so that the photovoltaic wire 21 is stably fixed in the connecting pipe 22, thereby increasing the stability of the connecting pipe 22, reducing the unstable voltage caused by the unstable connection between the photovoltaic wire 21 and the connecting pipe 22, reducing the increase of the contact resistance, improving the power generation efficiency of the photovoltaic system, and effectively transmitting and utilizing the electric energy.

[0054] At the same time, the connecting rod two 47 drives the inside of the mounting seat two 46 to slide, and then the connecting rod one 42 is driven to move through the contact between the connecting rod two 47 and the connecting rod one 42. At the same time, the connecting rod one 42 moves, and the shutter plate 41 drives the telescopic plate 44 to move on the mounting seat one 4 through the connection between the connecting rod one 42 and the shutter plate 41, so that the shortened telescopic plate 44 is elongated. The connecting assembly one 2 is covered through the cooperation of the mounting seat one 4 and the telescopic plate 44, thereby avoiding the acceleration of the aging of the connecting assembly one 2 when the connecting assembly one 2 is exposed to wind and rain outdoors. At the same time, the interface between the photovoltaic wire 21 and the connecting pipe 22 is covered, the rainwater falling on the interface is reduced, the service life of the connecting assembly one 2 is increased, and the safety of the interface is increased.

[0055] It should be noted that the sliding block 45 in contact with the bottom of the telescopic plate 44 has a telescopic function.

[0056] When the blocking plate 41 drives the sliding block 45 to move to one end inside the mounting seat 14, the sliding block 45 can be fixed by inserting the insertion rod 411 into the insertion hole 412 by the operator, and then the sliding block 45 is fixed by the fixed connection between the sliding block 45 and the blocking plate 41 and the fixed connection between the blocking plate 41 and the connecting rod 47. When the sliding block 45 is fixed, the rack 43 can be fixed, at this time, the connecting rod 47 cannot move when the rack 43 is pushed, thereby limiting the movement of the rack 43, avoiding the movement of the rack 43 when it is not needed, and accordingly increasing the stability of the rack 43.

[0057] When the gear 51 rotates, the accelerating wheel 62 drives the gear 63 to rotate, and the gear 63 and the gear 67 are connected to the same support rod 65, so that the support rod 65 drives the gear 67 to rotate when the gear 63 rotates. The rotation of the gear 67 drives the square hole 68 to move forward when the teeth of the gear 67 move, and the rotation of the square hole 68 drives the tension strip 61 inside the sealing sleeve 6, so that the tension strip 61 drives one end of the sealing sleeve 6 to shrink and contact the outer wall of the photovoltaic wire 21. The connection port of the connecting pipe 22 can be closed, avoiding dust entering the inside of the connecting pipe 22, and accordingly preventing dust from adhering to the inner wall of the connecting pipe 22 to cause an increase in contact resistance, reducing the short-circuit contact failure phenomenon caused by dust, thereby improving the power generation efficiency, reducing the maintenance cost, improving the overall economic benefit and safety of the photovoltaic module, and by only pushing the rack 43 to move, multiple mechanisms can be driven to move at the same time, thereby reducing the operation time of the operator.

[0058] The light-sensitive sensor 71 is arranged to detect light and transmit the detection result to the controller 7. When the controller 7 receives the signal of the light-sensitive sensor 71, it determines whether the current light intensity reaches the preset threshold through internal program processing. If the condition is met, a control signal is output to control the electric push rod 76 to start, and then the movement of the electric push rod 76 drives the push plate 75 to move forward. When the push plate 75 continues to move in contact with the insulating rod 74, the insulating rod 74 is driven to move, so that the insulating rod 74 drives the conductive plate 73 to move. The conductive plate 73 is separated from one end of the photovoltaic wire 21, and the connection between the conductive plate 73 and the photovoltaic wire 21 is disconnected. At this time, the second connection assembly 3 starts to work. This operation facilitates the replacement of different power supply systems in daytime and nighttime, avoids the reverse power supply of the power grid to the photovoltaic assembly through the inverter, causes the damage of the photovoltaic assembly, and correspondingly timely disconnects the connection between the photovoltaic assembly and the power grid. The reverse power supply of the power grid is effectively prevented, the service life of the photovoltaic assembly is prolonged, the system automatically switches to the photovoltaic power supply mode when the sunlight is sufficient in daytime, solar energy is fully utilized, the system automatically switches to the standby power supply system at night or when the sunlight is insufficient, the continuity and stability of power supply are ensured, and the efficiency and reliability of the whole power supply system are improved.

[0059] It should be noted that the second connection assembly 3 and the first connection assembly 2 are the same in structure.

[0060] When the shielding plate 41 is driven, the operator can push the second plug rod 813 to move away from the inside of the second plug hole 811, so as to release the limiting of the second plug hole 811 to the fixed rod 8. At this time, under the action of the third pushing spring 83, the fixed rod 8 can be pushed upward to move away from the inside of the fixed hole 81, so as to release the fixing of the fixed rod 8 and the square plate 82. At this time, the operator can pull the pressing block 52 to drive the sliding strip 521 to move away from the bottom plate 523, so as to replace it. The aging of the pressing block 52 after long-term use is avoided, and the pressing block 52 can always maintain a good working state by replacing the pressing block 52. When the pressing block 52 is replaced, the operator only needs to push the second plug rod 813 to complete the replacement operation. This operation is simple and fast, and is convenient for the operator to operate.

[0061] It should be noted that when the photovoltaic wire 21 needs to be taken out from the inside of the connecting pipe 22, the rack 43 only needs to be pushed reversely to drive a series of mechanical movements through the power source of the rack 43, so as to release the fixing of the photovoltaic wire 21 by the pressing block 52, and facilitate the taking out of the photovoltaic wire 21.

[0062] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. An alternating current-direct current hybrid power distribution energy interconnection type box-type substation comprising a housing (1), characterized in that: The shell (1), the lower part of the shell (1) is provided with a mutual control unit (13), the inside of the shell (1) is provided with a mutual power unit (11) above the mutual control unit (13), the back of the mutual power unit (11) is connected with the back of the mutual control unit (13) by wire, the outer wall of the back of the mutual power unit (11) is fixedly connected with a busbar (12), the outer wall of the back of the shell (1) is fixedly connected with a connecting assembly one (2) at the position of the busbar (12), the outer wall of the back of the shell (1) is fixedly connected with a connecting assembly two (3) on one side of the connecting assembly one (2), the inside of the connecting assembly one (2) is fixedly connected with a connecting pipe (22), the outer wall of the connecting pipe (22) is connected with the inside of the shell (1) through, one end of the inside of the connecting pipe (22) is fixedly connected with one end of the busbar (12), the connecting assembly one (2) is provided with a fixing mechanism, the other end of the inside of the connecting pipe (22) is movably inserted with a photovoltaic wire (21), the outer wall of the connecting assembly one (2) is provided with a protection mechanism; The fixing mechanism comprises a threaded rod (5), the outer wall of the threaded rod (5) is screwed with the inside of the top of the connecting assembly one (2), the outer wall of the top of the threaded rod (5) is fixedly connected with a gear one (51), the outer wall of the bottom of the threaded rod (5) is rotatably connected with a base, the outer wall of the base is fixedly connected with a bottom plate (523), the outer wall of the bottom of the bottom plate (523) movably contacts a pressing block (52), the inside of the threaded rod (5) is slidably connected with a fixing rod (8), the outer wall of the gear one (51) is meshingly connected with the inner wall of a rack (43), the outer wall of the gear one (51) is meshingly connected with an accelerator wheel (62), the axis of the accelerator wheel (62) is fixedly connected with a supporting rod one (64), the outer wall of the bottom of the supporting rod one (64) is rotatably connected with the outer wall of the top of the connecting assembly one (2), the outer wall of one side of the accelerator wheel (62) is meshingly connected with a gear three (63), the axis of the gear three (63) is fixedly connected with a supporting rod two (65), the outer wall of the front of the connecting assembly one (2) is fixedly connected with a mounting bracket (66) above, the inside of the mounting bracket (66) is rotatably connected with the outer wall of the supporting rod two (65), the outer wall of the front of the connecting assembly one (2) is fixedly connected with a sealing sleeve (6), one end of the inside of the sealing sleeve (6) is fixedly connected with a tension strip (61), the outer wall of the tension strip (61) is slidably connected with the inside of the mounting bracket (66), the outer wall of the bottom of the supporting rod two (65) is fixedly connected with a gear two (67), a square hole (68) is formed in the inner wall of one side of the tension strip (61), the outer wall of the gear two (67) is movably inserted into the inside of the square hole (68). The protection mechanism, including the mounting seat one (4), two said mounting seat one (4) opposite side wall and the outer wall of connecting component one (2) fixed connection, the top of connecting component one (2) outer wall fixedly connected with mounting seat two (46), the inside of mounting seat two (46) slidingly connected with connecting rod two (47), the outer wall of connecting rod two (47) one side fixedly connected with rack (43), the outer wall of connecting rod two (47) top and the outer wall of connecting rod one (42) bottom fixedly connected.

2. The AC / DC hybrid distribution energy intertie box-type substation of claim 1, wherein: The inside of mounting seat one (4) slidingly connected with sliding block (45), the outer wall of sliding block (45) top fixedly connected with baffle (41), the outer wall of baffle (41) one side fixedly connected with telescopic plate (44), the outer wall of baffle (41) bottom fixedly connected with connecting rod one (42) near telescopic plate (44) position.

3. The AC / DC hybrid distribution energy intertie box-type substation of claim 2, wherein: The inner wall of mounting seat one (4) one side movably inserted with plug rod one (411), the inner wall of plug rod one (411) one side fixedly connected with reset spring one (413), the outer wall of reset spring one (413) one end and the inner wall of mounting seat one (4) one side fixedly connected, the inner wall of sliding block (45) one side is located in the position of plug rod one (411) and is provided with insertion hole one (412), the inside of insertion hole one (412) and the outer wall of plug rod one (411) one end movably inserted.

4. The AC / DC hybrid power distribution energy intertie box-type substation of claim 1, wherein: The bottom plate (523) is provided with a strip-shaped groove (522), and the inside of the strip-shaped groove (522) is slidably connected with a sliding strip (521), and the outer wall of the bottom of the sliding strip (521) is fixedly connected with the outer wall of the top of the pressing block (52).

5. The AC / DC hybrid power distribution energy intertie box-type substation of claim 1, wherein: The outer wall of the fixed rod (8) is provided with a square groove, the inside of the square groove is slidably connected with a square plate (82), the outer wall of both ends of the square plate (82) is fixedly connected with the inside of the fixed rod (8), the outer wall of the bottom of the square plate (82) is fixedly connected with a pushing spring three (83), the outer wall of the bottom of the pushing spring three (83) is fixedly connected with the lower part of the inner wall of the square groove, the outer wall of the top of the pressing block (52) is provided with a fixed hole (81), and the outer wall of the bottom of the fixed rod (8) is movably inserted into the inside of the fixed hole (81).

6. The AC / DC hybrid power distribution energy intertie box-type substation of claim 1, wherein: The inside of the gear one (51) is fixedly connected with a reset spring two (812), the outer wall of one end of the reset spring two (812) is fixedly connected with a plug rod two (813), the outer wall of one end of the plug rod two (813) is movably inserted into the inside of the fixed rod (8) and the inside of the insertion hole two (811).

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