A portable microgrid fault detection device and detection method thereof

Abstract

The present invention discloses a portable microgrid fault detection device and a detection method thereof, comprising a box body and a box cover, one end of the box cover is fixed to the box body by a hinge, an electric board and two electric clip limit slots are fixed to the bottom of the box body, a test lamp is electrically connected to the electric board, the two electric clip limit slots are respectively arranged on both sides of the electric board, a positive electric clip pen and a negative electric clip pen are respectively arranged in the two electric clip limit slots, the positive electric clip pen and the negative electric clip pen are respectively connected to the electric board by electric wires, and the box body and the box cover are fixed by buckles. The present invention utilizes the principle of the current type fault detection method, tests the fault route by a detection lamp, and adds a retractable bracket to reduce the volume of the device, making it easy to carry and use.

Description

Technical Field

[0001] The present invention relates to a microgrid fault detection device, in particular to a portable microgrid fault detection device and a detection method thereof, and belongs to the application field of microgrid fault detection equipment. Background Art

[0002] Microgrid, also translated as microgrid, refers to a small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, loads, monitoring and protection devices, etc.

[0003] The proposal of microgrid aims to realize the flexible and efficient application of distributed power sources and solve the problem of grid connection of large number of distributed power sources in various forms. The development and extension of microgrid can fully promote the large-scale access of distributed power sources and renewable energy, realize the highly reliable supply of various energy forms to loads, and is an effective way to realize active distribution network, making the transition from traditional power grid to smart grid.

[0004] Existing microgrid fault detection methods are divided into voltage-type fault detection methods, current-type fault detection methods and intelligent fault detection methods. Among them, the voltage-type fault detection method takes a relatively long time to judge, isolate and restore non-fault power supply. In addition, the power grid will be subjected to multiple shocks. The intelligent fault detection method requires the use of automated terminal hardware and software equipment, which results in a large size of the detection equipment, which is not convenient to carry around. Summary of the invention

[0005] The purpose of the present invention is to provide a convenient microgrid fault detection device and a detection method thereof in order to solve the above-mentioned problems.

[0006] The present invention achieves the above-mentioned purpose through the following technical scheme: a portable microgrid fault detection device, including a box body and a box cover, one end of the box cover is fixed to the box body by a hinge, an electric board and two electric clip limit grooves are fixed to the bottom of the box body, a test light is electrically connected to the electric board, the two electric clip limit grooves are respectively arranged on both sides of the electric board, a positive electric clip pen and a negative electric clip pen are respectively arranged in the two electric clip limit grooves, the positive electric clip pen and the negative electric clip pen are respectively connected to the electric board by electric wires, and the box body and the box cover are fixed by buckles.

[0007] Preferably, a pull ring is fixed on the side wall of the box body, a box cover limiting groove is provided on the upper surface of the box body, the box cover is embedded in the box cover limiting groove, a test lampshade is fixed in the box cover, a lampshade limiting groove is provided at the bottom of the box body, the lampshade limiting groove is arranged at the periphery of the electric board, the test lampshade is embedded in the lampshade limiting groove, and a battery is fixed at the bottom of the box body.

[0008] Preferably, two shaft limiting grooves are provided in the box body, and the shaft limiting grooves are located directly below the electric clamp limiting grooves. The bottom surface of the electric clamp limiting grooves is provided with connecting wire grooves, and the connecting wire grooves are connected to the shaft limiting grooves. A shaft is spirally fixed in the shaft limiting grooves, and the positive electric clamp pen and the negative electric clamp pen are respectively connected to the shafts through connecting wires.

[0009] Preferably, a No. 1 fixing ring and a No. 2 fixing ring are fixed on the rotating shaft, and fixing rings are respectively sleeved on the No. 1 fixing ring and the No. 2 fixing ring, and a spring belt is connected to the fixing ring on the No. 1 fixing ring, and a welding disk is fixed to the front end of the spring belt, and the welding disk is fixed to the bottom surface of the rotating shaft limiting groove, and the other end of the connecting line is fixed to the fixing ring on the No. 2 fixing ring.

[0010] Preferably, a soft magnet is fixed to the bottom surface of the electric clamp limiting groove, iron sheets are fixed to the side walls of the positive pole electric clamp pen and the negative pole electric clamp pen, the iron sheets and the soft magnets are attracted to each other, and the connecting wire is fixed to the iron sheets.

[0011] Preferably, an electric clip pen cover is fixed on the inner end surface of the electric clip limiting groove.

[0012] Preferably, a bracket groove is provided at the bottom of the box body, a universal wheel limiting groove is provided on the end surface of the bracket groove, a bracket is spirally fixed in the bracket groove by a fixing pin, a universal wheel is fixed at the front end of the bracket, and the universal wheel is embedded in the universal wheel limiting groove.

[0013] Preferably, the bracket comprises a No. 1 tube, a No. 2 tube and a moving rod, the fixing pin passes through the No. 1 tube, a threaded tube is provided at the bottom of the No. 1 tube, a threaded column is fixed at the upper end of the No. 2 tube, the threaded column is spirally fixed in the threaded tube, two guide grooves with symmetrical structures are provided in the No. 2 tube, two guide strips with symmetrical structures are fixed on the side wall of the moving rod, a spring column is fixed on the upper surface of the moving rod, the guide strip is embedded in the guide groove, the upper end of the spring column is fixed inside the No. 2 tube, and the universal wheel is fixed at the bottom of the moving rod.

[0014] Preferably, the inner diameter of the threaded tube is smaller than the inner diameter of the No. 1 tube, and the diameter of the threaded column is larger than the diameter of the No. 2 tube.

[0015] A detection method of a portable microgrid fault detection device comprises the following steps:

[0016] (1) Open the box cover, take out the positive and negative electrode clip pens, and clamp the positive and negative electrode clip pens at both ends of the test circuit respectively;

[0017] (2) If the test light is on, it means the circuit is normal. If the test light cannot be on, it means the circuit is faulty.

[0018] The beneficial effects of the present invention are as follows: a portable microgrid fault detection device and a detection method thereof disclosed by the present invention utilize the principle of a current-type fault detection method to test the fault route through a detection lamp, and at the same time, a retractable bracket is added to reduce the size of the device, making it easy to carry and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the overall bottom surface structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the box body of the present invention.

[0022] Figure 4 It is a schematic diagram of the rotating shaft structure of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the negative electrode clamp pen of the present invention.

[0024] Figure 6 It is a schematic diagram of the support structure of the present invention.

[0025] In the figure: 1, box body, 2, box cover, 3, electric board, 4, test light, 5, electric clip limit slot, 6, positive electric clip pen, 7, negative electric clip pen, 8, electric clip pen cover, 9, test lamp cover, 10, box cover limit slot, 11, pull ring, 12, bracket slot, 13, universal wheel limit slot, 14, bracket, 15, wire, 16, connecting wire slot, 17, soft magnet, 18, shaft limit slot, 19, No. 1 fixing ring, 20. No. 2 fixing ring, 21. Fixing ring, 22. Spring belt, 23. Welding disk, 24. Rotating shaft, 25. Connecting wire, 26. Iron sheet, 27. Lampshade limiting groove, 28. No. 1 tube, 29. No. 2 tube, 30. Moving rod, 31. Threaded tube, 32. Threaded column, 33. Guide groove, 34. Guide strip, 35. Spring column, 36. Buckle, 37. Battery, 38. Fixing pin, 39. Universal wheel. DETAILED DESCRIPTION

[0026] 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.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner" and "outer" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figure 1-6 As shown, a portable microgrid fault detection device includes a box body 1 and a box cover 2, one end of the box cover 2 is fixed to the box body 1 by a hinge, an electric board 3 and two electric clamp limit grooves 5 are fixed to the bottom of the box body 1, a test light 4 is electrically connected to the electric board 3, the two electric clamp limit grooves 5 are respectively arranged on both sides of the electric board 3, a positive electric clamp pen 6 and a negative electric clamp pen 7 are respectively arranged in the two electric clamp limit grooves 5, the positive electric clamp pen 6 and the negative electric clamp pen 7 are respectively connected to the electric board 3 by an electric wire 15, and the box body 1 and the box cover 2 are fixed by a buckle 36.

[0030] A pull ring 11 is fixed on the side wall of the box body 1 , a box cover limiting groove 10 is provided on the upper surface of the box body 1 , and the box cover 2 is embedded in the box cover limiting groove 10 .

[0031] A test lampshade 9 is fixed inside the box cover 2, a lampshade limiting groove 27 is provided at the bottom of the box body 1, the lampshade limiting groove 27 is arranged at the periphery of the electric board 3, the test lampshade 9 is embedded in the lampshade limiting groove 27, and a battery 37 is fixed at the bottom of the box body 1.

[0032] Before testing the circuit, first take out the positive electrode clamp pen 6 and the negative electrode clamp pen 7, and fix them to the positive and negative electrodes of the battery 37 respectively. If the test light 4 is on, it means that the test light 4 itself is in good condition, avoiding the possibility of misleading the test result due to the failure of the test light 4 itself.

[0033] Two shaft limiting grooves 18 are provided in the box body 1, and the shaft limiting grooves 18 are located directly below the electric clamp limiting groove 5. The bottom surface of the electric clamp limiting groove 5 is provided with a connecting wire groove 16, and the connecting wire groove 16 is connected to the shaft limiting groove 18. A shaft 24 is spirally fixed in the shaft limiting groove 18, and the positive pole electric clamp pen 6 and the negative pole electric clamp pen 7 are respectively connected to the shaft 24 through connecting wires 25.

[0034] A first fixing ring 19 and a second fixing ring 20 are fixed on the rotating shaft 24, and fixing rings 21 are respectively sleeved on the first fixing ring 19 and the second fixing ring 20. A spring belt 22 is connected to the fixing ring 21 on the first fixing ring 19, and a welding disk 23 is fixed to the front end of the spring belt 22. The welding disk 23 is fixed to the bottom surface of the rotating shaft limiting groove 18, and the other end of the connecting line 25 is fixed to the fixing ring 21 on the second fixing ring 20.

[0035] A soft magnet 17 is fixed to the bottom surface of the electric clamp limiting groove 5 , and iron sheets 26 are fixed to the side walls of the positive electric clamp pen 6 and the negative electric clamp pen 7 . The iron sheets 26 and the soft magnet 17 are attracted to each other, and the connecting wire 25 is fixed to the iron sheets 26 .

[0036] When the positive electrode clamp pen 6 or the negative electrode clamp pen 7 is pulled outward, the rotating shaft 24 rotates clockwise and the connecting wire 25 is pulled out; when the positive electrode clamp pen 6 or the negative electrode clamp pen 7 is put back to its original position, the spring belt 22 drives the rotating shaft 24 to rotate counterclockwise and automatically retracts the connecting wire 25.

[0037] The iron sheet 26 and the soft magnet 17 are attracted to each other, thereby improving the stability of the positive electrode clamp pen 6 and the negative electrode clamp pen 7 in the clamp limiting groove 5 .

[0038] An electric clamp pen cover 8 is fixed on the inner end surface of the electric clamp limiting groove 5 .

[0039] A bracket groove 12 is provided at the bottom of the box body 1, and a universal wheel limiting groove 13 is provided on the end face of the bracket groove 12. A bracket 14 is spirally fixed in the bracket groove 12 through a fixing pin 38, and a universal wheel 39 is fixed at the front end of the bracket 14, and the universal wheel 39 is embedded in the universal wheel limiting groove 13.

[0040] The bracket 14 includes a No. 1 tube 28, a No. 2 tube 29 and a moving rod 30, the fixing pin 38 passes through the No. 1 tube 28, a threaded tube 31 is provided at the bottom of the No. 1 tube 28, a threaded column 32 is fixed at the upper end of the No. 2 tube 29, the threaded column 32 is spirally fixed in the threaded tube 31, two symmetrical guide grooves 33 are provided in the No. 2 tube 29, two symmetrical guide strips 34 are fixed on the side wall of the moving rod 30, a spring column 35 is fixed on the upper surface of the moving rod 30, the guide strip 34 is embedded in the guide groove 33, the upper end of the spring column 35 is fixed inside the No. 2 tube 29, and the universal wheel 39 is fixed at the bottom of the moving rod 30.

[0041] The inner diameter of the threaded tube 31 is smaller than the inner diameter of the No. 1 tube 28 , and the diameter of the threaded column 32 is larger than the diameter of the No. 2 tube 29 .

[0042] The moving rod 30 is squeezed inwards and retracted into the No. 2 tube 29 , the overall length of the bracket 14 is shortened, and the universal wheel 39 is disengaged from the universal wheel limiting groove 13 , making it easy to take the bracket 14 out of the bracket groove 12 .

[0043] Take out the bracket 14, rotate the No. 1 tube 28 to be vertical to the box body 1, slide the No. 2 tube 29 out of the No. 1 tube 28, screw the threaded column 32 onto the threaded tube 31, and adjust the overall length of the bracket 14.

[0044] A detection method of a portable microgrid fault detection device comprises the following steps:

[0045] (1) Open the box cover 2, take out the positive electrode clamp pen 6 and the negative electrode clamp pen 7, and clamp the positive electrode clamp pen 6 and the negative electrode clamp pen 7 at the two ends of the test circuit respectively;

[0046] (2) If the test light 4 lights up normally, it means the circuit is normal; if the test light 4 cannot light up normally, it means there is a fault in the circuit.

[0047] The staff can determine whether the circuit is faulty by observing the state of the test light 4.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A portable microgrid fault detection device, Features: The invention comprises a box body (1) and a box cover (2), wherein one end of the box cover (2) is fixed to the box body (1) by a hinge, an electric board (3) and two electric clamp limit grooves (5) are fixed to the bottom of the box body (1), a test light (4) is electrically connected to the electric board (3), the two electric clamp limit grooves (5) are respectively arranged on both sides of the electric board (3), a positive electric clamp pen (6) and a negative electric clamp pen (7) are respectively arranged in the two electric clamp limit grooves (5), the positive electric clamp pen (6) and the negative electric clamp pen (7) are respectively connected to the electric board (3) by an electric wire (15), and the box body (1) and the box cover (2) are fixed by a buckle (36); Two rotating shaft limiting grooves (18) are arranged in the box body (1), and the rotating shaft limiting grooves (18) are located directly below the electric clamp limiting groove (5). The bottom surface of the electric clamp limiting groove (5) is provided with a connecting wire through groove (16), and the connecting wire through groove (16) is connected with the rotating shaft limiting groove (18). A rotating shaft (24) is screwed fixed in the rotating shaft limiting groove (18), and the positive electric clamp pen (6) and the negative electric clamp pen (7) are respectively connected to the rotating shaft (24) through connecting wires (25); The bottom of the box body (1) is provided with a bracket groove (12), the end surface of the bracket groove (12) is provided with a universal wheel limiting groove (13), a bracket (14) is screw-fixed in the bracket groove (12) through a fixing pin (38), a universal wheel (39) is fixed at the front end of the bracket (14), and the universal wheel (39) is embedded in the universal wheel limiting groove (13); The bracket (14) comprises a No. 1 tube (28), a No. 2 tube (29) and a moving rod (30); the fixing pin (38) penetrates the No. 1 tube (28); a threaded tube (31) is provided at the bottom of the No. 1 tube (28); a threaded column (32) is fixed at the upper end of the No. 2 tube (29); the threaded column (32) is spirally fixed in the threaded tube (31); two guide grooves (33) with symmetrical structures are provided in the No. 2 tube (29); two guide strips (34) with symmetrical structures are fixed on the side wall of the moving rod (30); a spring column (35) is fixed on the upper surface of the moving rod (30); the guide strip (34) is embedded in the guide groove (33); the upper end of the spring column (35) is fixed inside the No. 2 tube (29); and the universal wheel (39) is fixed at the bottom of the moving rod (30).

2. A portable microgrid fault detection device according to claim 1, Features: A pull ring (11) is fixed on the side wall of the box body (1); a box cover limiting groove (10) is provided on the upper surface of the box body (1); the box cover (2) is embedded in the box cover limiting groove (10); a test lampshade (9) is fixed in the box cover (2); a lampshade limiting groove (27) is provided at the bottom of the box body (1); the lampshade limiting groove (27) is arranged on the periphery of the electric board (3); the test lampshade (9) is embedded in the lampshade limiting groove (27); and a storage battery (37) is fixed at the bottom of the box body (1).

3. A portable microgrid fault detection device according to claim 1, Features: A first fixing ring (19) and a second fixing ring (20) are fixed on the rotating shaft (24); a fixing ring (21) is sleeved on the first fixing ring (19) and the second fixing ring (20); a spring belt (22) is connected to the fixing ring (21) on the first fixing ring (19); a welding disk (23) is fixed at the front end of the spring belt (22); the welding disk (23) is fixed on the bottom surface of the rotating shaft limiting groove (18); and the other end of the connecting wire (25) is fixed on the fixing ring (21) on the second fixing ring (20).

4. A portable microgrid fault detection device according to claim 1, Features: A soft magnet (17) is fixed on the bottom surface of the electric clamp limiting groove (5), and iron sheets (26) are fixed on the side walls of the positive electric clamp pen (6) and the negative electric clamp pen (7). The iron sheets (26) and the soft magnet (17) are mutually attracted, and the connecting wire (25) is fixed on the iron sheets (26).

5. A portable microgrid fault detection device according to claim 4, Features: An electric clamp pen cover (8) is fixed on the inner end surface of the electric clamp limiting groove (5).

6. A portable microgrid fault detection device according to claim 1, Features: The inner diameter of the threaded tube (31) is smaller than the inner diameter of the No. 1 tube (28), and the diameter of the threaded column (32) is larger than the diameter of the No. 2 tube (29).

7. A detection method for the portable microgrid fault detection device according to any one of claims 1 to 6, Features: The following steps are involved: (1) Open the box cover (2), take out the positive electrode clamp pen (6) and the negative electrode clamp pen (7), and clamp the positive electrode clamp pen (6) and the negative electrode clamp pen (7) at the two ends of the test circuit respectively; (2) The test light (4) lights up normally, indicating that the circuit is normal; If the test light (4) fails to light up normally, it means that there is a circuit fault.

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