Microgrid network detection device and detection method

Abstract

The micro-grid network detection device comprises a mobile vehicle, a left lifting telescopic piece and a right lifting telescopic piece are connected to the upper portion of the mobile vehicle in a left-right sliding mode, the upper portion of the left lifting telescopic piece and the upper portion of the right lifting telescopic piece are connected with a detection contact block through springs, and a conductive shell is arranged in the detection contact block; the two conductive shells are connected through a connecting wire, and the connecting wire is connected with a detection power supply, a detection instrument, a detection resistor and a detection switch in series; by arranging the moving trolley, the left lifting telescopic piece, the right lifting telescopic piece, the detection contact blocks, the conductive shell, the connecting wire detection power supply, the detection instrument, the detection resistor and the detection switch, whether the circuit between the two detection contact blocks has problems or not can be judged by turning on the detection switch and observing the detection instrument; according to the method, initial detection is rapidly and gradually performed on the whole line in a segmented manner, an approximate problem segment of the faulty line is found, then fault location searching is performed on the faulty segmented line, and the searching efficiency of the fault location of the line is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of line detection devices, and in particular relates to a microgrid network detection device and a detection method. Background Art

[0002] ‌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. ‌The power grid of a microgrid is the main transmission mechanism of the microgrid. During the maintenance of the microgrid network, network detection devices are often used to detect the network lines of the microgrid.

[0003] For a network detection device, when detecting a long problematic line, it is not convenient to quickly find the line fault location, so the network cannot be repaired in time. Summary of the invention

[0004] In view of the deficiencies and defects in the prior art, the purpose of the present invention is to provide a microgrid network detection device to solve the problem that the network detection device in the prior art is not convenient to quickly find the line fault location, thereby failing to repair the network in time.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a microgrid network detection device, used for detecting microgrid lines, including a mobile car, a liftable line clamping member is provided on the left and right ends of the mobile car, and the line clamping member is used to clamp and tighten the line. A first slide groove that can extend left and right is provided on the upper part of the mobile car, and a left lifting telescopic member and a right lifting telescopic member are connected to the left and right sliding in the first slide groove. The upper parts of the left lifting telescopic member and the right lifting telescopic member are connected to a detection contact block through a spring, and a V-shaped groove is provided inside the detection contact block. The bottom of the inner side of the V-shaped groove is set to an arc shape, and an arc-shaped conductive shell in contact with the line is provided in the V-shaped groove. The inner diameter of the conductive shell is greater than or equal to the diameter of the line. The two conductive shells are connected by a connecting wire, and a detection power supply, a detection instrument, a detection resistor and a detection switch are connected in series on the connecting wire. The line between the two conductive shells, the connecting wire and the two detection contact blocks forms a circular path. The detection contact block is also provided with a line pressing marker, which is used to press the line on the detection contact block and mark the fault location.

[0006] As a further improvement of the present invention, the line clamping member includes a lifting rod, a U-shaped plate is provided on the top of the lifting rod, and an arc-shaped clamping plate is connected to the front and rear sides of the U-shaped plate through a horizontal telescopic rod. The two arc-shaped clamping plates are symmetrically arranged and enclosed in a ring to clamp the line.

[0007] As a further improvement of the present invention, a support rod extending left and right is provided on the upper part of the mobile vehicle, and both ends of the support rod are fixed to the mobile vehicle through vertical rods. A plurality of slip rings are slidably provided on the support rod, and each of the slip rings is connected to the connecting wire through a suspension rope.

[0008] As a further improvement of the present invention, the wire pressing marking component includes a wire pressing plate, which is rotatably hinged on the inner inclined surface of the detection contact block. A marking cavity is provided on the inner side of the wire pressing plate, and a marking nozzle is provided at the bottom of the wire pressing plate, which is communicated with the marking cavity.

[0009] As a further improvement of the present invention, an elastic pressing block is provided at the bottom of the wire pressing plate, and an arc-shaped groove is provided at the bottom of the elastic pressing block.

[0010] As a further improvement of the present invention, a slot is provided at the bottom of the detection contact block, the upper end of the spring is connected and arranged in the slot, and the lower end of the spring is connected to the left lifting telescopic member or the right lifting telescopic member.

[0011] As a further improvement of the present invention, an insertion hole is provided in the middle of the bottom of the detection contact block, and the end of the connecting wire passes through the insertion hole of the detection contact block and is connected to the conductive shell.

[0012] As a further improvement of the present invention, the upper ends of the left and right lifting telescopic parts are rotatably connected to two redirecting wheels through two support rods, one end of the connecting wire is wound around the redirecting wheel of the left lifting telescopic part, and is redirected from the upper end of the left lifting telescopic part to the front side of the left lifting telescopic part, and the other end of the connecting wire is wound around the redirecting wheel of the right lifting telescopic part, and is redirected from the upper end of the right lifting telescopic part to the front side of the right lifting telescopic part.

[0013] As a further improvement of the present invention, a second slide groove is provided on both sides of the first slide groove on the moving vehicle, and the line clamping member is connected to the second slide groove by sliding left and right through a second sliding block.

[0014] A detection method using a microgrid network detection device for detection includes the following steps: (1) Preparation: Adjust the line clamp and the detection contact block downward to a height lower than the line; then place the mobile vehicle parallel to the lower right end of the line; slide the left lifting telescopic part to the left to the limit position, and slide the right lifting telescopic part to the right to the limit position. At this time, the line between the two detection contact blocks is a segmented detection section; (2) Initial inspection of the segmented inspection section: adjust the left lifting telescopic member and the right lifting telescopic member upward so that the conductive shells in the detection contact blocks can all contact the line, and the line pressing marker blocks the upper side of the line. Turn on the detection switch and observe the detection instrument. If the detection instrument data is normal, it means that the section of the line between the two detection contact blocks is normal. Then proceed to step (3a) to inspect the next segmented inspection section of the line. If the detection instrument data is abnormal, it means that there is a problem with the segmented inspection section between the two detection contact blocks. Then proceed to step (3b) to conduct a specific fault location search for this segmented inspection section until the entire line is inspected. (3a) Testing the next segmented inspection section of the line: retract the left lifting telescopic member and the right lifting telescopic member downward, then move the moving vehicle to the left by the horizontal length of the segmented inspection section, and then repeat step (2) to complete the initial testing of the next segmented inspection section of the line; (3b) Finding the fault location within the segmented detection section: Move the two line clamping parts upward and clamp the line, then slide the left lifting and telescopic part to the right. When the detection instrument returns to normal, the left side of the detection contact block on the left is the first fault location. The line pressing marking part marks the first fault location. In this segmented detection section, the right side of the first fault location is the normal section, and the left side of the first fault location is the first section to be eliminated. Then, the first section to be eliminated is fault-finding; Fault finding of the first section to be eliminated: move the right telescopic lifting member to the left side of the first fault location, move the left telescopic lifting member to the left side of the right telescopic lifting member, and then gradually move the left telescopic lifting member to the left. If the detection instrument is always normal during the process of the left telescopic lifting member moving to the left to the extreme position, it means that the first section to be eliminated is completely normal and the first section to be eliminated has been found. Return to step (3a) to perform the detection of the next segmented detection section. If the detection instrument value is abnormal when the left telescopic lifting member moves to a certain position to the left, at this time, the position close to the right side of the left detection contact block is the second fault location, and the line pressing marker marks the second fault location. In this first section to be eliminated, the right side of the second fault location is the normal section, and the left side of the second fault location is the second section to be eliminated. Then, the second section to be eliminated is fault-finded according to the method of fault-finding of the first section to be eliminated. Repeat this process until all the fault locations of the segmented detection section are found. Return to step (3a) to test the next segmented detection section line.

[0015] Compared with the prior art, the present invention has the following advantages: 1. A mobile vehicle is provided, a slidable left lifting telescopic member and a slidable right lifting telescopic member are provided on the mobile vehicle, and a detection contact block is provided on each of the left lifting telescopic member and the right lifting telescopic member, a V-shaped groove is provided on the detection contact block, and a conductive shell is provided in the V-shaped groove, the two conductive shells are connected by a connecting wire, and a detection power supply, a detection instrument, a detection resistor and a detection switch are connected in series on the connecting wire. When a fault in the detection line is detected, the left lifting telescopic member and the right lifting telescopic member can be adjusted to a state of maximum distance first, and then the left lifting telescopic member and the right lifting telescopic member can be adjusted upward so that the conductive shell on the contact block can contact the wire. At this time, the section of the line between the two detection contact blocks, the connecting wire, the detection power supply, and the detection resistor The detection instrument can form a circuit. Turning on the detection switch can energize the circuit. By observing whether the detection instrument has a numerical display, it can be determined whether the line between the two detection contact blocks has a problem. Through this method, the entire line can be quickly and gradually segmented for preliminary detection. In the process of detection, if it is found that the line between the two detection contact blocks has a problem, the left lifting telescopic part and the right lifting telescopic part are moved and adjusted, and then the fault location between these segmented lines is specifically searched one by one. That is, on the whole, the lines are first segmented and detected one by one to find the approximate problem section of the problem line, and then the fault location of the problematic segmented line is searched, which can greatly improve the efficiency of line detection and fault location search.

[0016] In addition, the mobile vehicle is provided with two line clamps, which can be used to clamp the line when locating the fault location of the segmented line to avoid the pulling and shaking of the entire line when the contact block moves, and to improve the movement stability of the contact block; in addition, the setting of the line clamps allows the mobile vehicle to be translated after the line is clamped, thereby pulling the line to one side, so as to detect the fixing firmness of the line, and by translating the mobile vehicle, the sag state of the line can be changed or measured.

[0017] 2. By setting the line clamping member as a structure of a lifting rod, a U-shaped plate, a horizontal telescopic rod and an arc-shaped clamping plate, the lifting rod can drive the arc-shaped clamping plate to move up and down, so that the arc-shaped clamping plate can be directly opposite the line, and then the horizontal telescopic rod drives the two arc-shaped clamping plates to approach each other to clamp the line, and the structure is simple.

[0018] 3. By arranging a support rod on the mobile vehicle, a plurality of slip rings are slidably provided on the support rod, and each of the slip rings is connected to the connecting wire through a suspension rope, when the left lifting telescopic member and the right lifting telescopic member move left and right, the connecting wire can be driven to slide on the support rod.

[0019] 4. The wire pressing marking member is set as a wire pressing plate, a marking cavity is provided inside the wire pressing plate, a marking nozzle is provided at the bottom of the wire pressing plate, and the marking nozzle is communicated with the marking cavity. By setting the wire pressing marking member as a wire pressing plate, and providing the marking cavity and the marking nozzle on the wire pressing plate, the wire pressing plate can press the line to prevent the line from being separated from the conductive shell. In addition, the setting of the marking cavity and the marking nozzle can place a marking inkjet in the marking cavity, so that the fault location can be marked.

[0020] In addition, by providing an elastic pressing block at the bottom of the wire pressing plate, it is possible to avoid rigidly pressing the line, thereby preventing the line from being broken when the detection contact block moves.

[0021] As a further improvement of the present invention, an elastic pressing block is provided at the bottom of the wire pressing plate, and an arc-shaped groove is provided at the bottom of the elastic pressing block.

[0022] 5. By connecting the detection contact block to the left lifting telescopic member or the right lifting telescopic member through a spring, the height direction can be elastically adjusted according to the actual height of the line to ensure that the conductive shell is in contact with the line.

[0023] 6. By setting the line clamping piece to slide left and right on the mobile vehicle, when detecting the line in sections, the line can be clamped first, and then the two line clamping pieces can slide outward to tighten the sectioned line, which is convenient for detecting the movement of the contact block.

[0024] 7. A detection method using a microgrid network detection device is used to detect. The left lifting telescopic member and the right lifting telescopic member are adjusted outward to the maximum distance, and the height of the left lifting telescopic member and the right lifting telescopic member are adjusted so that the conductive shell on the detection contact block can contact the line. The section of the line between the two detection contact blocks is a segmented detection section. The connecting wire, the conductive shell, the detection power supply, the detection resistor, the detection instrument and the section of the line between the two detection contact blocks form a loop, so that the overall state of the section of the line between the two detection contact blocks can be detected for faults. If there is no problem with the section of the detection section, the mobile vehicle is directly moved horizontally, and then the next section of the detection section can be detected. This method is used until the entire line is detected. By detecting the line one by one in sections, the approximate fault area of ​​the positioning line can be quickly found. If a problem is found in a certain section of the detection section during the segmented detection process, the specific fault location of the line in the segmented detection section can be searched. In addition, when searching for a specific fault location, the normal section and the first fault location are first found by moving the left lifting telescopic member and the right lifting telescopic member, and then the normal section is eliminated. The first row of sections to be eliminated are then tested to detect whether there are other fault locations in the first section to be eliminated, and the second section to be eliminated is searched in this way, and so on, until the entire first section to be eliminated is searched, so as to quickly find multiple fault locations in the segmented detection section, and mark the fault locations, which is convenient for subsequent repair and maintenance and reduces the number of operating steps.

[0025] On the whole, the method of first inspecting the line in sections and then searching for the specific fault location can greatly improve the efficiency of finding the fault location of the entire line. In the process of the mobile vehicle moving in sections for inspection, the inspection contact block is retracted downward and then extended upward for inspection, so as to avoid the inspection contact block always moving in contact with the line, causing invalid wear of the line, or damage to the line caused by pulling and pulling on the line. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 EE cross-sectional view; Figure 3 for Figure 1 A magnified view at point A; Figure 4 for Figure 2 Enlarged view at B; Figure 5 for Figure 2 Enlarged view at C; Figure 6 is a schematic diagram of the structure of the line clamping member; Figure 7 for Figure 2 Enlarged view at D; Figure 8 An example description is provided for detecting a contact block close to the left and a contact block close to the right; In the figure: 1. mobile car; 2. line clamping member; 201. lifting rod; 202. U-shaped plate; 203. horizontal telescopic rod; 204. arc clamping plate; 3. first slide groove; 4. left lifting and telescopic member; 5. line pressing and marking member; 501. line pressing plate; 502. marking cavity; 503. marking nozzle; 504. elastic pressing block; 505. hinge plate; 6. spring; 7. detection contact block; 8. V-shaped groove; 9. conductive shell; 10. connecting wire; 11. detection power supply; 12. detection instrument; 13. detection resistor; 14. right lifting and telescopic member; 15. support rod; 16. vertical pole; 17. slip ring; 18. slot; 19. support plate; 20. first slider; 21. redirecting wheel; 22. support rod; 24. contact sensor; 25. suspension rope; 26. detection switch; 27. second slide groove; 28. second slider. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-8 The present invention is further described in detail. For a clearer illustration, only the structures related to the inventive point of the present invention are shown in the figure.

[0028] For the convenience of description, Figure 1 For example, the left-right direction is the horizontal direction, the front-back direction is the longitudinal direction, and the up-down direction is the vertical direction.

[0029] The embodiment of the present invention discloses a microgrid network detection device. Figure 1 and Figure 2 A microgrid network detection device is used to detect microgrid lines. The lines are conductors and include a mobile vehicle 1. The mobile vehicle 1 is provided with a driving mechanism that can drive it to move. The driving mechanism on the mobile vehicle 1 can adopt the walking vehicle power mechanism commonly used in the prior art. This application does not make any improvements to this, so it will not be described in detail.

[0030] like Figure 1 and Figure 2 As shown, the upper part of the mobile vehicle 1 is provided with a first slide 3 which can be extended left and right. A left lifting telescopic member 4 and a right lifting telescopic member 14 are connected to the first slide 3 by a first slider 20 for sliding left and right. The left lifting telescopic member 4 and the right lifting telescopic member 14 can adopt electric push rods or hydraulic push rods, etc. A first power mechanism (not shown in the drawings) that can drive the movement of the first slider 20 can be provided. The first power mechanism can adopt a travel motor or other power source that can drive the parts to move commonly used in the prior art. The upper parts of the left lifting telescopic member 4 and the right lifting telescopic member 14 are connected to a detection contact block 7 through a spring 6, as shown in FIG. Figure 3 and Figure 4As shown, a V-shaped groove 8 is provided inside the detection contact block 7, and the inner bottom of the V-shaped groove 8 is set to be arc-shaped. Two conductive shells 9 are connected by a connecting wire 10. An arc-shaped conductive shell 9 in contact with the line is provided in the V-shaped groove 8, and the inner diameter of the conductive shell 9 is greater than or equal to the diameter of the line. A slot 18 is provided at the bottom of the detection contact block 7, and the upper end of the spring 6 is connected and set in the slot 18. The lower end of the spring 6 is connected to the left lifting telescopic member 4 or the right lifting telescopic member 14. An insertion hole is provided in the middle of the bottom of the detection contact block 7, and the end of the connecting wire 10 passes through the insertion hole of the detection contact block 7 and is connected to the conductive shell 9. By connecting the detection contact block 7 to the left lifting telescopic member or the right lifting telescopic member 14 through the spring 6, the applicability elastic adjustment can be performed in the height direction according to the actual height of the line to ensure that the conductive shell 9 is in contact with the line.

[0031] like Figure 3 and Figure 5 As shown, a detection power supply 11, a detection instrument 12, a detection resistor 13 and a detection switch 26 are connected in series on the connecting wire 10. The detection power supply 11, the detection instrument 12, the detection resistor 13 and the detection switch 26 can be fixed on the left lifting and telescopic member 4 through an L-shaped support plate 19. The detection instrument 12 can be an ammeter or a voltmeter, and the detection power supply 11 is a battery. The lines between the two conductive shells 9, the connecting wire 10 and the two detection contact blocks 7 form a circular path. The detection contact block 7 is also provided with a line pressing marker 5, which is used to press the line on the detection contact block 7 and to mark the fault location.

[0032] In addition, if Figure 1 and Figure 3 As shown, a support rod 15 extending left and right is provided on the upper part of the mobile vehicle 1, and both ends of the support rod 15 are fixed to the mobile vehicle 1 through vertical rods 16. A plurality of slip rings 17 are slidably provided on the support rod 15, and each of the slip rings 17 is connected to the connecting wire 10 through a suspension rope 25. When the left lifting telescopic member 4 and the right lifting telescopic member 14 move left and right, the connecting wire 10 can be driven to slide on the support rod 15.

[0033] In addition, if Figure 7As shown, the upper ends of the left lifting telescopic member 4 and the right lifting telescopic member 14 are rotatably connected to two redirecting wheels 21 through two support rods 22. The lengths of the two support rods 22 can be different. When setting, they are adjusted according to the actual manufacturing situation. One end of the connecting wire 10 (the end close to the left lifting telescopic member 4) is wound around the redirecting wheel 21 of the left lifting telescopic member 4 and redirected from the upper end of the left lifting telescopic member 4 to the front side of the left lifting telescopic member 4, and the other end of the connecting wire 10 (the end close to the right lifting telescopic member 14) is wound around the redirecting wheel 21 of the right lifting telescopic member 14 and redirected from the upper end of the right lifting telescopic member 14 to the front side of the right lifting telescopic member 14, thereby guiding the connecting wire 10 in the direction of the support rod 15.

[0034] In addition, each of the conductive shells 9 is provided with a contact sensor 24, which is used to detect whether the conductive shell 9 is in contact with the line, and when the conductive shell 9 is in contact with the line, a signal is sent and transmitted to the left lifting telescopic member 4 or the right lifting telescopic member 14 on the same side as the conductive shell 9, thereby controlling the left lifting telescopic member 4 or the right lifting telescopic member 14 to stop extending upward. Through the setting of the contact sensor 24, after the conductive shell 9 is in contact with the line, the left lifting telescopic member 4 or the right lifting telescopic member 14 can stop extending upward in time, and the automation is stronger.

[0035] The wire pressing marking member 5 includes a wire pressing plate 501, which is rotatably hinged on the inner inclined surface of the detection contact block 7. Specifically, a hinged plate 505 can be set on the inner inclined surface of the detection contact block 7, and a hinge shaft is fixed on the wire pressing plate 501, and the hinge shaft is rotatably hinged with the hinged plate 505, and the hinge shaft is connected to a rotating motor (illustrated in the accompanying figure) that can drive it to rotate. The connection setting method and technical principle of the rotating motor are the same as the commonly used rotating motor drive connection method in the prior art, and this application will not go into details. Then the rotating motor can drive the hinge shaft and the wire pressing plate 501 to rotate, so that the wire pressing plate 501 can be pressed down or opened. A marking cavity 502 is provided on the inner side of the wire pressing plate 501, and a marking nozzle 503 is provided at the bottom of the wire pressing plate 501, and the marking nozzle 503 is communicated with the marking cavity 502. By setting the wire pressing marking member 5 as a wire pressing plate 501, and providing a marking cavity 502 and a marking nozzle 503 on the wire pressing plate 501, the wire pressing plate 501 can press the line to prevent the line from detaching from the conductive shell 9. In addition, the setting of the marking cavity 502 and the marking nozzle 503 can place a marking inkjet in the marking cavity 502, so that the fault location can be marked. During specific maintenance, the fault location can be repaired. In order to increase accuracy, maintenance detection can also be carried out within a certain range to the left and right of the fault location.

[0036] In addition, an elastic clamping block 504 is provided at the bottom of the wire pressing plate 501, and an arc groove is provided at the bottom of the elastic clamping block 504. By providing an elastic clamping block 504 at the bottom of the wire pressing plate 501, hard clamping of the line can be avoided, so that when the detection contact block 7 moves, the line can be prevented from being broken.

[0037] In addition, a liftable line clamping member 2 is provided at both ends of the left and right sides of the mobile vehicle 1. The two line clamping members 2 are located outside the left lifting telescopic member 4 and the right lifting telescopic member 14. The line clamping member 2 is used to clamp and tighten the line. Specifically, Figure 6 As shown, the line clamping member 2 includes a lifting rod 201, and the lifting rod 201 can be an electric push rod. A U-shaped plate 202 is provided on the top of the lifting rod 201. The front and rear sides of the U-shaped plate 202 are connected with an arc-shaped clamping plate 204 through a horizontal telescopic rod 203. The horizontal telescopic rod 203 can be an electric push rod. The two arc-shaped clamping plates 204 are symmetrically arranged and enclosed in a ring to clamp the line. The lifting rod 201 can drive the arc-shaped clamping plates 204 to move up and down, so that the arc-shaped clamping plates 204 can be just opposite to the line, and then the horizontal telescopic rod 203 drives the two arc-shaped clamping plates 204 to approach each other to clamp the line. The structure is simple. In addition, a second slide groove 27 is provided on the mobile vehicle 1 on both sides of the left and right sides of the first slide groove 3. The line clamping member 2 is connected to the second slide groove 27 by a second slider 28 for left and right sliding. The line clamping member 2 is provided with a power mechanism that can drive it to move. The power mechanism can adopt a travel motor or other power source that can drive components to move that is commonly used in the prior art. When detecting the line in sections, the line can be clamped first, and then the two line clamping members 2 can slide outward to tighten the sectioned line, so as to facilitate the movement detection of the contact block 7.

[0038] The present invention provides a mobile vehicle 1, a slidable left lifting telescopic member 4 and a slidable right lifting telescopic member 14 are provided on the mobile vehicle 1, and a detection contact block 7 is provided on each of the left lifting telescopic member 4 and the right lifting telescopic member 14, a V-shaped groove 8 is provided on the detection contact block 7, and a conductive shell 9 is provided in the V-shaped groove 8, the two conductive shells 9 are connected by a connecting wire 10, and a detection power supply 11, a detection instrument 12, a detection resistor 13 and a detection switch 26 are connected in series on the connecting wire 10. When a fault occurs in the detection line, the left lifting telescopic member 4 and the right lifting telescopic member 14 can be adjusted to a state of maximum distance first, and then the left lifting telescopic member 4 and the right lifting telescopic member 14 can be adjusted upward so that the conductive shell 9 on the contact block can contact the wire. At this time, the section of the line between the two detection contact blocks 7 and the connecting wire 10 is 0. The detection power supply 11, the detection resistor 13 and the detection instrument 12 can form a loop. By turning on the detection switch 26, the loop can be energized. By observing whether the detection instrument 12 has a numerical display, it can be determined whether the section of the line between the two detection contact blocks 7 has a problem. Through this method, the entire line can be quickly and gradually segmented for preliminary detection. In the process of detection, if it is found that the section of the line between the two detection contact blocks 7 has a problem, then the left lifting telescopic member 4 and the right lifting telescopic member 14 are moved and adjusted, and then the fault location between these section of the line is specifically searched one by one. That is, on the whole, the lines are first segmented and detected one by one to find the approximate problem section of the problem line, and then the fault location of the problematic section is searched, which can greatly improve the efficiency of line detection and fault location search.

[0039] In addition, the mobile vehicle 1 is provided with two line clamping members 2, which can be used to clamp the line when locating the fault location of the segmented line to avoid dragging and shaking of the entire line when the contact block moves, and to improve the movement stability of the contact block; in addition, the setting of the line clamping member 2 allows the mobile vehicle 1 to be translated after the line is clamped, thereby pulling the line to one side, so as to detect the fixing firmness of the line, and by translating the mobile vehicle 1, the sag state of the line can be changed or measured.

[0040] A detection method using a microgrid network detection device for detection includes the following steps: (1) Preparation: Adjust the line clamping member 2 and the detection contact block 7 downward to a height lower than the line; then place the mobile vehicle 1 parallel to the lower right end of the line; slide the left lifting telescopic member 4 to the left to the limit position, and slide the right lifting telescopic member 14 to the right to the limit position. At this time, the line between the two detection contact blocks 7 is a segmented detection section; (2) Initial inspection of the segmented inspection section: adjust the left lifting telescopic member 4 and the right lifting telescopic member 14 upwards so that the conductive shell 9 in the detection contact block 7 can all contact the line, and the line pressing marker 5 blocks the upper side of the line. Turn on the detection switch 26 and observe the condition of the detection instrument 12. If the data of the detection instrument 12 is normal, it means that the section of the line between the two detection contact blocks 7 is normal. Then proceed to step (3a) to inspect the next segmented inspection section of the line. If the data of the detection instrument 12 is abnormal, it means that there is a problem with the section of the line between the two detection contact blocks 7. Then proceed to step (3b) to conduct a specific fault location search for this section of the segmented inspection section until the entire line is inspected. (3a) Testing the next segmented detection section of the line: retract the left lifting telescopic member 4 and the right lifting telescopic member 14 downward, then move the moving vehicle 1 to the left by the horizontal length of the segmented detection section, and then repeat step (2) to complete the initial testing of the next segmented detection section of the line; (3b) Finding the fault location in the segmented detection section: Move the two line clamping members 2 upward and clamp the line, then slide the left lifting and telescopic member 4 to the right. When the detection instrument 12 returns to normal, the left side of the detection contact block 7 on the left is the first fault location. The line pressing marker 5 marks the first fault location. In this segmented detection section, the right side of the first fault location is the normal section, and the left side of the first fault location is the first section to be eliminated. Then, the first section to be eliminated is fault-finded. Fault finding of the first section to be eliminated: move the right lifting telescopic member 14 to the left side of the first fault zone, move the left lifting telescopic member 4 to the left side of the right lifting telescopic member 14, and then gradually move the left lifting telescopic member 4 to the left. If the detection instrument 12 is always normal during the process of the left lifting telescopic member 4 moving to the left to the extreme position, it means that the first section to be eliminated is all normal, the first section to be eliminated has been found, and return to step (3a) to perform the next segment detection section detection; if the value of the detection instrument 12 is abnormal when the left lifting telescopic member 4 moves to a certain position to the left, at this time, the position close to the right side of the left detection contact block 7 is the second fault zone. The line marking member 5 marks the second fault location. Then, in this first section to be eliminated, the right side of the second fault location is a normal section, that is, the section between the first fault location and the second fault location is normal, and the left side of the second fault location is the second section to be eliminated. Then, the second section to be eliminated is fault-finded according to the method of fault-finding for the first section to be eliminated, and this process is repeated until all the fault locations of the segmented detection section are completely found. That is, when the last section to be eliminated is fault-detected, the left lifting and telescopic member 4 can be moved to the left to the extreme position. The last section to be eliminated is found, and the process returns to step (3a) to detect the line of the next segmented detection section.

[0041] By using a detection method for detecting by using a microgrid network detection device, the left lifting telescopic member 4 and the right lifting telescopic member 14 are adjusted outward to the maximum distance, and the heights of the left lifting telescopic member 4 and the right lifting telescopic member 14 are adjusted so that the conductive shell 9 on the detection contact block 7 can contact the line. The section of the line between the two detection contact blocks 7 is a segmented detection section, and the connecting wire 10, the conductive shell 9, the detection power supply 11, the detection resistor 13, the detection instrument 12 and the section of the line between the two detection contact blocks 7 form a loop, so that the overall state of the section of the line between the two detection contact blocks 7 can be detected for faults. If there is no problem with the section of the segmented detection section, the mobile vehicle 1 is directly translated, and then the next segmented detection section is detected. This method is used until the entire line is detected. By detecting the line one by one in a segmented manner, the approximate fault area of ​​the positioning line can be quickly found and located. If a problem is found in a segmented detection section during the segmented detection process, the specific fault location of the line in the segmented detection section can be searched. In addition, when searching for a specific fault location, by moving the left lifting telescopic member 4 and the right lifting telescopic member 14, first find the normal section and the first fault location, then eliminate the normal section, and then detect the first row of sections to be eliminated to detect whether there are other fault locations in the first section to be eliminated, and use this method to find the second section to be eliminated, and so on, until the left lifting telescopic member 4 moves to the left to the extreme position, and the entire first section to be eliminated is completely searched, so that multiple fault locations in the segmented detection section are quickly found one by one, and the fault locations are marked, which is convenient for subsequent repair and maintenance and reduces the number of operating steps.

[0042] On the whole, the method of first detecting the line in sections and then searching for the specific fault location can greatly improve the efficiency of searching the fault location of the entire line. In the process of moving the mobile vehicle 1 to detect in sections one by one, the detection contact block 7 is retracted downward and then extended upward for detection, so as to avoid the detection contact block 7 always moving in contact with the line, causing invalid wear of the line, or damage to the line caused by pulling and pulling on the line.

[0043] In addition, it should be noted that: the close left side of the above-mentioned detection contact block 7, in actual implementation, refers to the line within the range from the point of the left side edge of the detection contact block 7 to the left (x is 15 cm) length to the right side edge of the detection contact block 7; the close right side of the detection contact block 7, in actual implementation, refers to the line within the range from the point of the right side edge of the detection contact block 7 to the right (x is 15 cm) length to the left side edge of the detection contact block 7, as shown in the specific Figure 8 shown.

[0044] 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection 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. It should be understood that the specific embodiments described herein are only used to understand the present invention and are not used to limit the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Claims

1. A microgrid network detection device for detecting microgrid lines, comprising a mobile vehicle, characterized in that: A liftable line clamping member is provided on the left and right end portions of the movable vehicle, and the line clamping member is used to clamp and tighten the line. A first slide groove which can extend left and right is provided on the upper part of the movable vehicle, and a left lift telescopic member and a right lift telescopic member are connected in a left and right sliding manner in the first slide groove, and the upper parts of the left and right lift telescopic members are connected to a detection contact block through a spring, and a V-shaped groove is provided inside the detection contact block, and the inner bottom of the V-shaped groove is set to an arc shape, and an arc-shaped conductive shell in contact with the line is provided in the V-shaped groove, and the inner diameter of the conductive shell is greater than or equal to the diameter of the line, and the two conductive shells are connected by a connecting wire, and a detection power supply, a detection instrument, a detection resistor and a detection switch are connected in series on the connecting wire, and the line between the two conductive shells, the connecting wire and the two detection contact blocks forms a circular path, and a line pressing marker is also provided on the detection contact block, and the line pressing marker is used to press the line on the detection contact block and to mark the fault location.

2. A microgrid network detection device according to claim 1, characterized in that: The line clamping member comprises a lifting rod, a U-shaped plate is arranged on the top of the lifting rod, and an arc-shaped clamping plate is connected to the front and rear sides of the U-shaped plate through a horizontal telescopic rod. The two arc-shaped clamping plates are symmetrically arranged and enclosed in a ring to clamp the line.

3. A microgrid network detection device according to claim 1, characterized in that: A support rod extending left and right is provided on the upper part of the mobile vehicle. Both ends of the support rod are fixed on the mobile vehicle through vertical rods. A plurality of slip rings are slidably provided on the support rod, and each of the slip rings is connected to a connecting wire through a suspension rope.

4. A microgrid network detection device according to claim 1, characterized in that: The wire pressing marking member comprises a wire pressing plate, which is rotatably hinged on the inner inclined surface of the detection contact block, a marking cavity is arranged inside the wire pressing plate, and a marking nozzle is arranged at the bottom of the wire pressing plate, which is communicated with the marking cavity.

5. A microgrid network detection device according to claim 4, characterized in that: An elastic pressing block is arranged at the bottom of the wire pressing plate, and an arc groove is arranged at the bottom of the elastic pressing block.

6. A microgrid network detection device according to claim 1, characterized in that: A slot is provided at the bottom of the detection contact block, the upper end of the spring is connected and arranged in the slot, and the lower end of the spring is connected to the left lifting telescopic member or the right lifting telescopic member.

7. A microgrid network detection device according to claim 1, characterized in that: An inserting hole is arranged in the middle of the bottom of the detection contact block, and the end of the connecting wire passes through the inserting hole of the detection contact block and is connected to the conductive shell.

8. A microgrid network detection device according to claim 1, characterized in that: The upper ends of the left and right lifting telescopic parts are rotatably connected to two redirecting wheels through two support rods, one end of the connecting wire is wound around the redirecting wheel of the left lifting telescopic part and redirected from the upper end of the left lifting telescopic part to the front side of the left lifting telescopic part, and the other end of the connecting wire is wound around the redirecting wheel of the right lifting telescopic part and redirected from the upper end of the right lifting telescopic part to the front side of the right lifting telescopic part.

9. A microgrid network detection device according to claim 1, characterized in that: A second slide groove is provided on the moving vehicle on both sides of the left and right sides of the first slide groove, and the line clamping member is connected to the second slide groove by sliding left and right through a second sliding block.

10. A detection method using a microgrid network detection device as claimed in claim 1, characterized in that: The steps include: (1) Preparation: Adjust the line clamp and the detection contact block downward to a height lower than the line; then place the mobile vehicle parallel to the lower right end of the line; slide the left lifting telescopic part to the left to the limit position, and slide the right lifting telescopic part to the right to the limit position. At this time, the line between the two detection contact blocks is a segmented detection section; (2) Initial inspection of the segmented inspection section: adjust the left lifting telescopic member and the right lifting telescopic member upward so that the conductive shells in the detection contact blocks can all contact the line, and the line pressing marker blocks the upper side of the line. Turn on the detection switch and observe the detection instrument. If the detection instrument data is normal, it means that the section of the line between the two detection contact blocks is normal. Then proceed to step (3a) to inspect the next segmented inspection section of the line. If the detection instrument data is abnormal, it means that there is a problem with the segmented inspection section between the two detection contact blocks. Then proceed to step (3b) to conduct a specific fault location search for this segmented inspection section until the entire line is inspected. (3a) Testing the next segmented inspection section of the line: retract the left lifting telescopic member and the right lifting telescopic member downward, then move the moving vehicle to the left by the horizontal length of the segmented inspection section, and then repeat step (2) to complete the initial testing of the next segmented inspection section of the line; (3b) Finding the fault location within the segmented detection section: Move the two line clamping parts upward and clamp the line, then slide the left lifting and telescopic part to the right. When the detection instrument returns to normal, the left side of the detection contact block on the left is the first fault location. The line pressing marking part marks the first fault location. In this segmented detection section, the right side of the first fault location is the normal section, and the left side of the first fault location is the first section to be eliminated. Then, the first section to be eliminated is fault-finding; Fault finding of the first section to be eliminated: move the right telescopic lifting member to the left side of the first fault location, move the left telescopic lifting member to the left side of the right telescopic lifting member, and then gradually move the left telescopic lifting member to the left. If the detection instrument is always normal during the process of the left telescopic lifting member moving to the left to the extreme position, it means that the first section to be eliminated is completely normal and the first section to be eliminated has been found. Return to step (3a) to perform the detection of the next segmented detection section. If the detection instrument value is abnormal when the left telescopic lifting member moves to a certain position to the left, at this time, the position close to the right side of the left detection contact block is the second fault location, and the line pressing marker marks the second fault location. In this first section to be eliminated, the right side of the second fault location is the normal section, and the left side of the second fault location is the second section to be eliminated. Then, the second section to be eliminated is fault-finded according to the method of fault-finding of the first section to be eliminated. Repeat this process until all the fault locations of the segmented detection section are found. Return to step (3a) to test the next segmented detection section line.

Images