A microgrid monitoring and protection device

Abstract

The invention discloses a microgrid monitoring and protection device, which relates to the field of microgrid monitoring equipment, and comprises a mounting rod, a protective cover, a current stabilizing device and a current recording structure. The mounting rod and the protective cover are connected to each other by two connecting handles arranged side by side up and down. The protective cover is provided with a current stabilizing device, and the current stabilizing device comprises an input part and an output part. The bottom of the input part is fixedly installed in the protective cover, the input part is fixedly connected to the current recording structure through a wire 1, the output part is connected to the input part through a sliding plate, the current recording structure is fixedly installed on the top of the protective cover, a wire 2 is provided on the current recording structure, the wire 2 is on an external power grid, and a wire 3 is provided on the output part, and the wire 3 outputs the current input by the wire 2 back to the power grid.

Description

Technical Field

[0001] The present invention relates to the field of microgrid monitoring equipment, and in particular to a microgrid monitoring and protection device. Background Art

[0002] The proposal of microgrid aims to realize the flexible and efficient application of distributed power sources and solve the problem of grid connection of a large number of distributed power sources in various forms. The general structure includes a small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, loads, monitoring and protection devices. Compared with large power grids, the entire system has the advantages of flexibility and efficiency, but because of its small size, it often does not have sufficient safety redundancy to ensure that the power grid will not be affected by current fluctuations.

[0003] In particular, due to the limitations of their own scale and investment, some microgrids are not fully equipped with devices for monitoring current fluctuations in the entire microgrid. Current fluctuations occur when the power load in the microgrid changes or when bad weather affects it. When there is a shortage of professional personnel, the occurrence and intensity of current fluctuations cannot be monitored and recorded as much as possible, and there is not enough safety redundancy to eliminate the impact of current fluctuations, which will affect the normal promotion and use of microgrids. Summary of the invention

[0004] The purpose of the present invention is to provide a microgrid monitoring and protection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a microgrid monitoring and protection device, comprising a mounting rod, a protective cover, a current stabilizing device and a current recording structure, wherein the mounting rod and the protective cover are connected to each other by two connecting handles arranged side by side up and down, a current stabilizing device is arranged in the protective cover, and the current stabilizing device comprises an input part and an output part, the bottom of the input part is fixedly installed in the protective cover, the input part is fixedly connected to the current recording structure through a wire one, the output part is connected to the input part through a sliding plate, the current recording structure is fixedly installed on the top of the protective cover, a wire two is arranged on the current recording structure, the wire two is on the external power grid, and a wire three is arranged on the output part, and the wire three outputs the current input by the wire two back to the power grid.

[0006] Preferably, an inspection door is provided on the front of the protective cover, and the inspection door is slidably connected in a guide groove on the protective cover. The protective cover is installed in a fixed frame through a mounting shaft, and the side wall of the fixed frame is connected to the connecting handle.

[0007] Preferably, the input part includes an upper fixed plate, a lower fixed plate and a shielding cover, the upper fixed plate is connected to the bottom of wire one, an electromagnet is provided in the upper fixed plate, elastic members evenly spaced are provided between the upper fixed plate and the lower fixed plate, the bottom of the lower fixed plate is fixedly installed in the protective cover, a permanent magnet is provided in the lower fixed plate, the bottom of the shielding cover is fixedly installed on the lower fixed plate and covers the upper fixed plate, a guide cover is provided in the shielding cover, and the bottom of the guide cover is fixedly installed on the lower fixed plate.

[0008] Preferably, the wire 1 passes through the shielding cover and the guide cover, the wire 1 is made of a rigid material, and the wire 1 is slidably connected to the guide cover.

[0009] Preferably, the output part includes an insulating seat, a supporting seat, a rheostat and a top fixing plate, the insulating seat is fixedly installed in the protective cover, the supporting seat is fixedly installed on the insulating seat, the bottom of the rheostat is fixed on the supporting seat, the top of the rheostat is fixedly installed on the top fixing plate, the end of the top fixing plate is fixedly installed on the side wall of the protective cover, and the rheostat is connected to the input part through a sliding plate.

[0010] Preferably, the current recording structure includes a sealing bent plate, a supporting rod, a laser generator and an electric push structure, one end of the sealing bent plate is fixedly mounted on the top of the fixed frame, and the other end is located at the end of the laser generator, the bottom of the supporting rod is fixed to the upper end of the protective cover, the end of the supporting rod is rotatably connected to a rotating rod, the end of the rotating rod is connected to the laser generator, the bottom of the electric push structure is fixedly mounted on the supporting rod, and the output shaft of the electric push structure is connected to the rotating rod.

[0011] Preferably, a surrounding frame is provided at the end of the sealing bent plate, and a rubber plate is installed on the side of the surrounding frame facing the laser generator.

[0012] Preferably, the electric push structure includes an electric push rod and a connecting head, the bottom of the electric push rod is fixedly connected to the supporting rod, the end of the output shaft of the electric push rod is rotatably connected to the connecting head, the top of the connecting head is fixedly connected to the rotating rod, and the second wire is electrically connected to the electric push rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The current recording structure provided in the invention can drive the laser generator to flip at different angles through the change of the electric push rod stroke caused by the current size of the electric push rod when the current fluctuation occurs, and judge whether the current fluctuation is generated and the range of the current fluctuation by the change of the height of the trace left by the photosensitive adhesive on the adhesive plate irradiated by light;

[0015] 2. When current fluctuation occurs, the invention adjusts the resistance of the rear-end variable resistor by changing the magnetic force of the electromagnet, and adjusts the current by increasing or decreasing the resistance to make the current as stable as possible, thereby preventing line loss caused by current fluctuation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It is a front view of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the current stabilizing device of the present invention;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the current stabilizing device of the present invention;

[0020] Figure 5 for Figure 4 A magnified view of the structure at inner B;

[0021] Figure 6 Schematic diagram of the current recording structure.

[0022] In the figure: 1-installation rod;

[0023] 2-protective cover; 21-inspection door; 22-installation shaft; 23-fixed frame;

[0024] 3-current stabilizing device; 31-input part; 311-upper fixing plate; 312-lower fixing plate; 313-shielding cover; 314-electromagnet; 315-elastic member; 316-permanent magnet; 317-guide cover;

[0025] 32-output part; 321-insulating seat; 322-support seat; 323-variator; 324-top fixing plate;

[0026] 33- sliding plate;

[0027] 4-current recording structure; 41-sealed curved plate; 411-enclosing frame; 412-rubber plate; 42-support rod; 43-laser generator;

[0028] 44-electric push structure; 441-electric push rod; 442-connector;

[0029] 45-rotating rod;

[0030] 5-connecting handle; 6-wire one; 7-wire two; 9-wire three. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 6 The present invention provides a technical solution: a microgrid monitoring and protection device, comprising a mounting rod 1, a protective cover 2, a current stabilizing device 3 and a current recording structure 4, wherein the mounting rod 1 and the protective cover 2 are connected to each other through two connecting handles 5 arranged side by side in an upper and lower manner, a top current stabilizing device 3 is arranged in the protective cover 2, the current stabilizing device 3 comprises an input part 31 and an output part 32, the bottom of the input part 31 is fixedly installed in the protective cover 2, the input part 31 is fixedly connected to the current recording structure 4 through a wire 1 6, the output part 32 is connected to the input part 31 through a sliding plate 33, the current recording structure 4 is fixedly installed on the top of the protective cover 2, a wire 2 7 is arranged on the current recording structure 4, the wire 2 7 is on an external power grid, a wire 3 9 is arranged on the output part 32, the wire 3 9 outputs the current input by the wire 2 7 back to the power grid, and is connected to the external power grid through the wire 2 7, when the current fluctuation occurs, a mark is left on the current recording structure 4, and at the same time, the fluctuating current will be eliminated under the processing of the current stabilizing device 3, so as to ensure the stability of the current in the power grid.

[0033] In this embodiment, an inspection door 21 is provided on the front of the protective cover 2. The inspection door 21 is slidably connected to the guide groove on the protective cover 2. The protective cover 2 is installed in a fixed frame 23 through a mounting shaft 22. The side wall of the fixed frame 23 is connected to the connecting handle 5. The inspection door 21 is usually in a closed state to protect the current stabilization device inside.

[0034] In this embodiment, the input part 31 includes an upper fixing plate 311, a lower fixing plate 312 and a shielding cover 313. The upper fixing plate 311 is connected to the bottom of the wire 6. An electromagnet 314 is provided in the upper fixing plate 311. Elastic members 315 are evenly spaced between the upper fixing plate 311 and the lower fixing plate 312. The bottom of the lower fixing plate 312 is fixedly installed in the protective cover 2. A permanent magnet 316 is provided in the lower fixing plate 312. The bottom of the shielding cover 313 is fixedly installed on the lower fixing plate 312 and covers the upper fixing plate 311. The shielding cover 313 is fixedly installed on the lower fixing plate 312 and covers the upper fixing plate 311. A guide cover 317 is provided in the shielding cover 313, and the bottom of the guide cover 317 is fixedly mounted on the lower fixed plate 312. Due to the elastic member 315 provided between the upper fixed plate 311 and the lower fixed plate 312, the force between the electromagnet 314 and the permanent magnet 316 can be overcome, so that the upper fixed plate 311 and the lower fixed plate 312 are in a stable state. Only when the current passing through the conductor 16 changes, the magnetic force of the electromagnet 314 can be changed, so that the elastic member 315 and the magnetic force between the two can be changed, so that the upper fixed plate 311 moves up and down, and drives the sliding plate 33 to move up and down.

[0035] In this embodiment, the wire 1 6 passes through the shielding cover 313 and the guide cover 317. The wire 1 6 is made of rigid material. The wire 1 6 is slidably connected to the guide cover 317. The shielding cover 313 can prevent the electromagnet 314 from being affected by the outside.

[0036] In this embodiment, the output part 32 includes an insulating seat 321, a support seat 322, a rheostat 323 and a top fixed plate 324. The insulating seat 321 is fixedly installed in the protective cover 2, the support seat 322 is fixedly installed on the insulating seat 321, the bottom of the rheostat 323 is fixed on the support seat 322, the top of the rheostat 323 is fixedly installed on the top fixed plate 324, and the end of the top fixed plate 324 is fixedly installed on the side wall of the protective cover 2. The rheostat 323 is connected to the input part 31 through the sliding plate 33. When the upper fixed plate 311 moves up and down, the sliding plate 33 is driven to slide up and down on the rheostat 323, so that the resistance of the connected circuit changes, thereby adjusting the current in the circuit. When the current increases, the resistance is increased, and when the current decreases, the resistance is reduced, so that the current tends to be stable.

[0037] In this embodiment, the current recording structure 4 includes a sealing bent plate 41, a supporting rod 42, a laser generator 43 and an electric push structure 44. One end of the sealing bent plate 41 is fixedly mounted on the top of the fixed frame 23, and the other end is located at the end of the laser generator 43. The bottom of the supporting rod 42 is fixed to the upper end of the protective cover 2. The end of the supporting rod 42 is rotatably connected to a rotating rod 45. The end of the rotating rod 45 is connected to the laser generator 43. The bottom of the electric push structure 44 is fixedly mounted on the supporting rod 42. The output shaft of the electric push structure 44 is connected to the rotating rod 45. The laser generator 42 emits laser and irradiates it into the sealing bent plate 41. When the current in the electric push structure 44 does not change, the light emitted by the laser generator 43 will not change either, and it will always irradiate in a fixed direction.

[0038] In this embodiment, a surrounding frame 411 is provided at the end of the sealing bent plate 41, and a glue plate 412 is installed on the side of the surrounding frame 411 facing the laser generator 43. The glue plate 412 is coated with photosensitive glue, which can leave traces on the photosensitive glue when light passes through, so as to facilitate recording of current fluctuations.

[0039] In this embodiment, the electric push structure 44 includes an electric push rod 441 and a connecting head 442. The bottom of the electric push rod 441 is fixedly connected to the support rod 42, the end of the output shaft of the electric push rod 441 is rotatably connected to the connecting head 442, and the top of the connecting head 442 is fixedly connected to the rotating rod 45. The wire 27 is electrically connected to the electric push rod 441. When the current in the power grid is stable, the push distance of the electric push rod 441 remains unchanged. When fluctuations occur, the push distance will change due to the change in current, causing the rotating rod 45 to rotate, which will cause the light of the laser generator 43 to change, and will produce marks on the rubber plate 412 to record the occurrence and intensity of the current fluctuations.

[0040] Working principle: When in use, the entire device is installed in a fixed position through the mounting rod 1, and then connected to the microgrid. When current fluctuations occur, the push-out distance of the electric push rod 441 caused by the current change will change, causing the illumination of the laser generator 43 to change. The change in illumination will produce traces on the rubber plate 412, recording the occurrence and intensity of current fluctuations. When the current passes through the wire 2 7 and the wire 1 6 and flows into the input part 31, the current changes, and the magnetic force of the electromagnet 314 changes, causing the upper fixed plate 311 to move up and down, and driving the sliding plate 33 to move up and down. When the upper fixed plate 311 moves up and down, it drives the sliding plate 33 to slide up and down on the rheostat 323, causing the resistance of the connected circuit to change, thereby adjusting the current in the circuit. When the current increases, the resistance increases, and when the current decreases, the resistance decreases, so that the current tends to be stable.

[0041] Based on the above, the current recording structure set up in the invention can push the laser generator to flip at different angles through the change of the electric push rod stroke caused by the current size of the electric push rod when current fluctuation occurs, and judge whether current fluctuation is generated and the range of current fluctuation by the change of the height of the trace left by the photosensitive glue on the glue board irradiated with light.

[0042] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A microgrid monitoring and protection device, characterized in that: The invention comprises a mounting rod (1), a protective cover (2), a current stabilizing device (3) and a current recording structure (4), wherein the mounting rod (1) and the protective cover (2) are connected to each other via two connecting handles (5) arranged side by side in an upper and lower manner, the protective cover (2) is provided with a current stabilizing device (3), the current stabilizing device (3) comprises an input part (31) and an output part (32), the bottom of the input part (31) is fixedly mounted in the protective cover (2), the input part (31) is fixedly connected to the current recording structure (4) via a wire 1 (6), the output part (32) is connected to the input part (31) via a sliding plate (33), the current recording structure (4) is fixedly mounted on the top of the protective cover (2), the current recording structure (4) is provided with a wire 2 (7), the wire 2 (7) is on an external power grid, the output part (32) is provided with a wire 3 (9), the wire 3 (9) outputs the current inputted by the wire 2 (7) back to the power grid; The current recording structure (4) comprises a sealing bent plate (41), a supporting rod (42), a laser generator (43) and an electric push structure (44); one end of the sealing bent plate (41) is fixedly mounted on the top of the fixed frame (23), and the other end is located at the end of the laser generator (43); the bottom of the supporting rod (42) is fixed to the upper end of the protective cover (2); the end of the supporting rod (42) is rotatably connected to a rotating rod (45); the end of the rotating rod (45) is connected to the laser generator (43); the bottom of the electric push structure (44) is fixedly mounted on the supporting rod (42); and the output shaft of the electric push structure (44) is connected to the rotating rod (45); An enclosing frame (411) is provided at the end of the sealing bent plate (41), and a rubber plate (412) is installed on the side of the enclosing frame (411) facing the laser generator (43); The electric push structure (44) comprises an electric push rod (441) and a connector (442); the bottom of the electric push rod (441) is fixedly connected to the support rod (42); the end of the output shaft of the electric push rod (441) is rotatably connected to the connector (442); the top of the connector (442) is fixedly connected to the rotating rod (45); and the second wire (7) is electrically connected to the electric push rod (441).

2. A microgrid monitoring and protection device according to claim 1, characterized in that: An inspection door (21) is provided on the front of the protective cover (2), and the inspection door (21) is slidably connected to a guide groove on the protective cover (2). The protective cover (2) is installed in a fixed frame (23) via a mounting shaft (22), and a side wall of the fixed frame (23) is connected to the connecting handle (5).

3. A microgrid monitoring and protection device according to claim 1, characterized in that: The input part (31) comprises an upper fixing plate (311), a lower fixing plate (312) and a shielding cover (313); the upper fixing plate (311) is connected to the bottom of the wire 1 (6); an electromagnet (314) is provided in the upper fixing plate (311); elastic members (315) are provided between the upper fixing plate (311) and the lower fixing plate (312) and are evenly spaced; the bottom of the lower fixing plate (312) is fixedly mounted in the protective cover (2); a permanent magnet (316) is provided in the lower fixing plate (312); the bottom of the shielding cover (313) is fixedly mounted on the lower fixing plate (312) and covers the upper fixing plate (311); a guide cover (317) is provided in the shielding cover (313); the bottom of the guide cover (317) is fixedly mounted on the lower fixing plate (312).

4. A microgrid monitoring and protection device according to claim 3, characterized in that: The wire one (6) passes through the shielding cover (313) and the guide cover (317); the wire one (6) is made of a rigid material; and the wire one (6) is slidably connected to the guide cover (317).

5. A microgrid monitoring and protection device according to claim 1, characterized in that: The output part (32) comprises an insulating seat (321), a supporting seat (322), a rheostat (323) and a top fixing plate (324); the insulating seat (321) is fixedly mounted in the protective cover (2); the supporting seat (322) is fixedly mounted on the insulating seat (321); the bottom of the rheostat (323) is fixed on the supporting seat (322); the top of the rheostat (323) is fixedly mounted on the top fixing plate (324); the end of the top fixing plate (324) is fixedly mounted on the side wall of the protective cover (2); and the rheostat (323) is connected to the input part (31) via a sliding plate (33).

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