CN212693925U - Single-phase earth fault quick positioning device - Google Patents
Single-phase earth fault quick positioning device Download PDFInfo
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- CN212693925U CN212693925U CN201922453770.2U CN201922453770U CN212693925U CN 212693925 U CN212693925 U CN 212693925U CN 201922453770 U CN201922453770 U CN 201922453770U CN 212693925 U CN212693925 U CN 212693925U
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Abstract
The utility model provides a quick positioner of single-phase earth fault, pour into test current signal into to the fault line through the transmitter, and make the fault line pass opening current transformer, opening current transformer senses after the current signal, controller control electromagnetic switch is closed, thereby driving motor drive moving platform removes, make the electromagnetism iron have magnetism and adsorb the metalwork simultaneously, when opening current transformer removes the fault point, opening current transformer does not sense current signal, when the controller did not receive the signal of telecommunication that opening current transformer sent, control electromagnetic switch opens, make driving motor and electro-magnet not receive the electric energy, thereby moving platform removes, and the metalwork drops on the ground, realize the automatic clearance and the regional location of trouble to the fault line, improve fault detection's efficiency.
Description
Technical Field
The utility model relates to a ground connection detects technical field, in particular to quick positioner of single-phase earth fault.
Background
The single-phase grounding fault is the most common fault of a power distribution system, and is caused by a plurality of factors such as tree faults, single-phase breakdown of insulators on a power distribution line, single-phase line breakage, damage of animals and the like, the single-phase grounding not only influences the normal power supply of a user, but also can generate overvoltage to burn out equipment, even if a power grid runs for a long time when the single-phase grounding fault occurs, the insulation weak link is broken down due to the fact that the two phases of non-faults rise to the ground voltage, the fault is developed into an inter-phase short circuit, the accident is enlarged, the current fault location adopts a manual inspection mode, the efficiency is low, the fault point can be located by spending more time, and the normal distribution of the power can be influenced.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a quick positioner of single-phase earth fault can advance line fast positioning to the trouble, reduces between the trouble section, improves fault location's efficiency.
The technical scheme of the utility model is realized like this:
the single-phase earth fault rapid positioning device comprises a transmitter, an open current transformer, a moving platform, a metal plate, a driving motor and an electric control mechanism arranged in the moving platform, wherein the transmitter injects a test current signal into a fault line, the open current transformer is arranged on the moving platform in a lifting mode and enables the fault line to pass through an opening of the moving platform, the metal plate is arranged on the lower surface of the moving platform, and the driving motor drives the moving platform to move; the electric control mechanism comprises a controller, a battery pack, an electromagnet and an electromagnetic switch, the battery pack, the electromagnet, a driving motor and the electromagnetic switch form an electric loop, the controller is electrically connected with the electromagnetic switch and an opening current transformer respectively, and the electromagnet is arranged at a position corresponding to the metal plate on the bottom surface inside the mobile platform.
Preferably, the current transformer further comprises a lifting mechanism, and the opening current transformer is connected with the upper surface of the mobile platform through the lifting mechanism.
Preferably, elevating system includes sleeve pipe and lifter, the sleeve pipe lateral wall is provided with a plurality of constant head tank, the lifter lateral wall is provided with elasticity and bumps the pearl, when the lifter inserted in the sleeve pipe, elasticity bumps the pearl embedding in the constant head tank.
Preferably, the mobile platform further comprises a wireless transmission unit, wherein the wireless transmission unit is arranged on the upper surface of the mobile platform and is electrically connected with the controller.
Preferably, still include the driving wheel, the driving wheel sets up in the moving platform lower surface, driving motor is connected with the driving wheel.
Preferably, the lower surface of the metal plate is provided with a sharp portion.
Preferably, the mobile platform further comprises an alarm unit, wherein the alarm unit is arranged on the upper surface of the mobile platform and is electrically connected with the controller.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a quick positioner of single-phase earth fault, send test current signal to the fault circuit by the transmitter, when open current transformer senses current signal, controller control electromagnetic switch is closed, thereby the electric energy of group battery can be carried for driving motor and electro-magnet, drive moving platform removes, and make the metal sheet can synchronous motion, when removing the fault point department, open current transformer does not sense current signal, thereby controller control electromagnetic switch opens, cut off the supply of electric energy, thereby moving platform stops, and because the electro-magnet does not have power supply and does not have magnetism, thereby the metal sheet drops subaerial, mark the fault point, can judge the fault interval from this, improve fault location's efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a first embodiment of the single-phase earth fault quick positioning device of the present invention;
fig. 2 is a schematic structural diagram of a lifting mechanism according to a first embodiment of the single-phase earth fault quick positioning device of the present invention;
fig. 3 is a schematic circuit diagram of a first embodiment of the single-phase earth fault quick positioning device according to the present invention;
fig. 4 is a schematic circuit diagram of a single-phase earth fault quick positioning device according to a second embodiment of the present invention;
in the figure, 1 is a transmitter, 2 is an open current transformer, 3 is a mobile platform, 4 is a metal plate, 5 is a driving motor, 6 is a controller, 7 is a battery pack, 8 is an electromagnet, 9 is an electromagnetic switch, 10 is a sleeve, 11 is a lifting rod, 12 is a positioning groove, 13 is an elastic collision bead, 14 is a wireless transmission unit, 15 is a driving wheel, 16 is a sharp part, and 17 is an alarm unit.
Detailed Description
In order to better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described with reference to the accompanying drawings.
Referring to fig. 1 to 3, the utility model provides a single-phase earth fault quick positioning device, including transmitter 1, opening current transformer 2, moving platform 3, metal sheet 4, driving motor 5 and the electrical control mechanism who sets up in moving platform 3, transmitter 1 injects the test current signal into the fault line, opening current transformer 2 over-and-under type sets up on moving platform 3, and makes the fault line pass its opening, metal sheet 4 sets up on moving platform 3 lower surface, driving motor 5 drives moving platform 3 and moves; the electric control mechanism comprises a controller 6, a battery pack 7, an electromagnet 8 and an electromagnetic switch 9, the battery pack 7, the electromagnet 8, the driving motor 5 and the electromagnetic switch 9 form an electric loop, the controller 6 is respectively electrically connected with the electromagnetic switch 9 and the opening current transformer 2, and the electromagnet 8 is arranged at the position corresponding to the metal plate 4 on the inner bottom surface of the mobile platform 3.
The single-phase earth fault quick positioning device of the embodiment is characterized in that after a transmitter 1 is fixed at a fault line, a test current signal is injected into the fault line by the transmitter 1, then after an open current transformer 2 is opened, the fault line penetrates through the open current transformer 2, when current flows through the fault line, the open current transformer 2 can sense the current signal and send the current signal to a controller 6, the controller 6 receives an electric signal sent by the open current transformer 2 and then controls an electromagnetic switch 9 to be closed, so that an electric loop formed by the electromagnetic switch 9, a battery pack 7, an electromagnet 8 and a driving motor 5 is switched on, electric energy of the battery pack 7 can be transmitted to the driving motor 5, the driving motor 5 drives a moving platform 3 to move along the fault line, when the single-phase earth fault quick positioning device moves to an earth fault point, the open current transformer 2 does not sense the current signal, at this time, the controller 6 does not receive the electric signal transmitted by the open current transformer 2, so that the controller 6 controls the electromagnetic switch 9 to be opened, the electric circuit is cut off, the driving motor 5 stops working, the moving platform 3 stops moving, the position near the position where the open current transformer 2 is located can be determined to be a fault area, the fault area is reduced, the efficiency of fault location is improved, and finally the fault area is gradually reduced by moving the position of the transmitter 1.
In order to further mark and locate a fault point, the metal plate 4 is arranged on the lower surface of the mobile platform 3, when the open current transformer 2 does not sense a current signal, the controller 6 controls the electromagnetic switch 9 to be switched on, and cuts off the electric energy supplied to the electromagnet 8 by the battery pack 7, so that the electromagnet 8 loses magnetism, and when the mobile platform 3 stops, the metal plate 4 falls on the ground, so that the situation that the mobile platform 3 slides in certain slope areas to influence the location of a fault section can be prevented.
The specific working steps of this embodiment are: after rising opening current transformer 2 to trouble circuit department, make the trouble circuit pass opening current transformer 2, then open transmitter 1, opening current transformer 2 senses behind the current signal, moving platform 3 can slowly remove, when moving platform 3 stops, both can confirm that near area of opening current transformer 2 is the fault area, the realization is to the automatic elimination and the location of fault area of trouble circuit, the efficiency of fault detection is improved, controller 6 of this embodiment adopts the singlechip of STM32F101RB model to realize.
Preferably, still include elevating system, opening current transformer 2 passes through elevating system and 3 upper surface connections of moving platform, elevating system includes sleeve 10 and lifter 11, the sleeve 10 lateral wall is provided with a plurality of constant head tank 12, the 11 lateral walls of lifter are provided with elasticity and bump pearl 13, when lifter 11 inserted sleeve 10, elasticity bumps pearl 13 and imbeds in constant head tank 12.
Realize opening current transformer 2's lift through elevating system, with lifter 11 upwards tensile for elasticity bumps pearl 13 and can block into constant head tank 12, through set up the constant head tank 12 of the vertical range of a plurality of groups on sleeve pipe 10 surface, thereby can be selective stretch the height of difference with lifter 11, so that be applicable to the not fault detection of the transmission line of co-altitude.
Preferably, the mobile platform further comprises a wireless transmission unit 14, wherein the wireless transmission unit 14 is arranged on the upper surface of the mobile platform 3 and is electrically connected with the controller 6.
When the controller 6 does not receive the electric signal sent by the open current transformer 2, the controller 6 sends a notification signal through the wireless transmission unit 14, and after receiving the notification signal, a worker can search the mobile platform 3 through a handheld terminal and other equipment, so that a fault area is determined, remote monitoring is realized, and the wireless transmission unit 14 can be realized by a WiFi module or an NB-IOT wireless transmission chip.
Preferably, the device further comprises a driving wheel 15, the driving wheel 15 is arranged on the lower surface of the moving platform 3, and the driving motor 5 is connected with the driving wheel 15.
The driving motor 5 drives the driving wheel 15 to rotate so as to drive the moving platform 3 to move.
Preferably, the lower surface of the metal plate 4 is provided with a sharp portion 16.
The sharp portion 16 is provided so as to be fixed by piercing into the ground when the metal plate 4 is not dropped by the magnetic force, thereby preventing the metal plate from being deviated.
Referring to the second embodiment shown in fig. 4, the mobile platform further comprises an alarm unit 17, wherein the alarm unit 17 is arranged on the upper surface of the mobile platform 3 and is electrically connected with the controller 6.
In this embodiment, by setting the alarm unit 17, the wireless transmission unit 14 may not be required to be set, when the open current transformer 2 does not sense the current signal, the controller 6 controls the electromagnetic switch 9 to be turned on and simultaneously sends an alarm signal to the alarm unit 17, the alarm unit 17 may be a buzzer or a light alarm, and the alarm unit 17 may prompt the worker to complete the detection.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The single-phase earth fault rapid positioning device is characterized by comprising a transmitter, an open current transformer, a movable platform, a metal plate, a driving motor and an electric control mechanism arranged in the movable platform, wherein the transmitter injects a test current signal into a fault line, the open current transformer is arranged on the movable platform in a lifting mode and enables the fault line to pass through an opening of the movable platform, the metal plate is arranged on the lower surface of the movable platform, and the driving motor drives the movable platform to move; the electric control mechanism comprises a controller, a battery pack, an electromagnet and an electromagnetic switch, the battery pack, the electromagnet, a driving motor and the electromagnetic switch form an electric loop, the controller is electrically connected with the electromagnetic switch and an opening current transformer respectively, and the electromagnet is arranged at a position corresponding to the metal plate on the bottom surface inside the mobile platform.
2. The single-phase ground fault quick positioning device of claim 1, further comprising a lifting mechanism, wherein the open-ended current transformer is connected with the upper surface of the mobile platform through the lifting mechanism.
3. The single-phase earth fault quick positioning device as claimed in claim 2, wherein the lifting mechanism comprises a sleeve and a lifting rod, the side wall of the sleeve is provided with a plurality of positioning slots, the side wall of the lifting rod is provided with elastic collision beads, and the elastic collision beads are embedded in the positioning slots when the lifting rod is inserted into the sleeve.
4. The single-phase earth fault quick positioning device of claim 1, further comprising a wireless transmission unit, wherein the wireless transmission unit is arranged on the upper surface of the mobile platform and electrically connected with the controller.
5. The single-phase earth fault quick positioning device of claim 1, further comprising a driving wheel, wherein the driving wheel is arranged on the lower surface of the movable platform, and the driving motor is connected with the driving wheel.
6. The single-phase earth fault quick locating device of claim 1, wherein said metal plate is provided with a sharp portion on a lower surface thereof.
7. The single-phase earth fault quick positioning device of claim 1, further comprising an alarm unit disposed on the upper surface of the mobile platform and electrically connected to the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922453770.2U CN212693925U (en) | 2019-12-31 | 2019-12-31 | Single-phase earth fault quick positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922453770.2U CN212693925U (en) | 2019-12-31 | 2019-12-31 | Single-phase earth fault quick positioning device |
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| Publication Number | Publication Date |
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| CN212693925U true CN212693925U (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922453770.2U Active CN212693925U (en) | 2019-12-31 | 2019-12-31 | Single-phase earth fault quick positioning device |
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| CN (1) | CN212693925U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295965A (en) * | 2021-05-25 | 2021-08-24 | 国网山东省电力公司济南市济阳区供电公司 | Distribution network ground fault positioning method, system and terminal |
| CN116500384A (en) * | 2023-06-27 | 2023-07-28 | 深圳凯升联合科技有限公司 | High-voltage circuit fault automatic diagnosis device |
-
2019
- 2019-12-31 CN CN201922453770.2U patent/CN212693925U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295965A (en) * | 2021-05-25 | 2021-08-24 | 国网山东省电力公司济南市济阳区供电公司 | Distribution network ground fault positioning method, system and terminal |
| CN116500384A (en) * | 2023-06-27 | 2023-07-28 | 深圳凯升联合科技有限公司 | High-voltage circuit fault automatic diagnosis device |
| CN116500384B (en) * | 2023-06-27 | 2023-09-05 | 深圳凯升联合科技有限公司 | High-voltage circuit fault automatic diagnosis device |
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