CN110412373B - Switch cabinet fault early warning system and replacement method thereof - Google Patents
Switch cabinet fault early warning system and replacement method thereof Download PDFInfo
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- CN110412373B CN110412373B CN201910665119.3A CN201910665119A CN110412373B CN 110412373 B CN110412373 B CN 110412373B CN 201910665119 A CN201910665119 A CN 201910665119A CN 110412373 B CN110412373 B CN 110412373B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000003068 static effect Effects 0.000 claims abstract description 34
- 238000012545 processing Methods 0.000 claims abstract description 26
- 239000000523 sample Substances 0.000 claims description 48
- 238000011418 maintenance treatment Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
The invention aims to provide a switch cabinet fault early warning system and a replacement method thereof, wherein the switch cabinet fault early warning system comprises a central processing unit and a plurality of switch cabinet devices, each switch cabinet device comprises a switch cabinet static contact rod and a switch cabinet movable contact rod, the switch cabinet movable contact rods are embedded into connecting grooves of the switch cabinet static contact rods, each switch cabinet static contact rod and each switch cabinet movable contact rod are respectively provided with a resistance meter, the resistance meters and the central processing unit form a device fault early warning system through an acquisition module, the resistance values of the joints of the switch cabinet devices are acquired in real time, the fluctuation conditions of the resistance values are monitored in real time, fault warning can be effectively carried out on the devices, planned pre-updating and maintenance treatment on the switch cabinet devices in advance can be realized, and the phenomenon of emergency power utilization faults of the running devices can be effectively prevented.
Description
Technical Field
The invention relates to the field of safety of power systems, in particular to a switch cabinet fault early warning system and a replacement method thereof.
Background
With the rapid development of cities in China and the rapid development of power systems in China, particularly in the aspect of intelligent power, particularly in the aspect of power components, particularly in high-voltage circuit breakers, a certain contact resistance exists between a moving contact and a fixed contact, and because the environment where a power distribution cabinet of the power system is located is a severe place, the air humidity is high, the air temperature is high, devices of switch cabinet equipment are aged or even damaged, the operation of the switch cabinet equipment is unstable or even has large operation faults, but the equipment in the cabinet is difficult to early warn and replace and maintain in advance under the current condition, the equipment is often replaced after the faults occur, the situations of instability and emergency faults of power utilization are caused to a great extent, and the potential safety hazard of power utilization is caused to a great extent.
Therefore, the switch cabinet fault early warning system and the replacement method thereof are provided, the switch cabinet equipment fault early warning system is arranged in the switch cabinet, the resistance value of the connection position of the switch cabinet equipment is collected in real time, the fluctuation condition of the resistance value is monitored in real time, fault alarm can be effectively carried out on the equipment, planned pre-update and maintenance treatment can be carried out on the switch cabinet equipment in advance, the phenomenon of emergency power failure when the equipment is in operation can be effectively prevented, meanwhile, a wireless intelligent mode is adopted, the influence of wire connection on the working time of a circuit breaker can be effectively reduced, the interference of a wire on the whole circuit is avoided, the space in the cabinet can be effectively saved, the space utilization efficiency is improved, and the problem which needs to be solved by technical personnel in the field is solved urgently.
Disclosure of Invention
The invention aims to provide a switch cabinet fault early warning system and a replacement method thereof, the switch cabinet equipment fault early warning system is arranged in a switch cabinet, the resistance value of the connection position of switch cabinet equipment is collected in real time, and the fluctuation condition of the resistance value is monitored in real time, so that the fault alarm can be effectively carried out on the equipment, planned pre-update and maintenance treatment can be carried out on the switch cabinet equipment in advance, the phenomenon of emergency power failure when the equipment is in operation can be effectively prevented, meanwhile, a wireless intelligent mode is adopted, the influence of wire connection on the working process of a circuit breaker can be effectively reduced, the interference of a wire on the whole circuit is avoided, the space in the cabinet can be effectively saved, and the space utilization efficiency is improved.
In order to solve the technical problems in the background technology, the invention adopts the following technical scheme:
a switch cabinet fault early warning system comprises a central processing unit and a plurality of switch cabinet devices, the switch cabinet equipment comprises a switch cabinet static contact rod and a switch cabinet movable contact rod, the switch cabinet movable contact rod is embedded into a connecting groove of the switch cabinet static contact rod, each switch cabinet static contact rod and each switch cabinet movable contact rod are provided with a resistance meter, the ohmmeters and the central processing unit form an equipment fault early warning system through an acquisition module, the input end of the acquisition module is respectively connected with the output end of each group of ohmmeters, the output end of the acquisition module is connected with the input end of the central processing unit through an A/D converter, the output end of the central processing unit is respectively connected with the display and the alarm, and the output end of the central processing unit is also connected with the feedback input end of the acquisition module through the data feedback module in a feedback manner, and the ohmmeter is connected with the switch cabinet static contact rod and the switch cabinet movable contact rod through the sliding thimble type fixing device.
Preferably, slip thimble formula fixing device include fixed connection cover and slip connection cover, the fixed connection lantern ring cover on cubical switchboard static contact rod, the slip connection lantern ring cover is on cubical switchboard movable contact rod, the ohmmeter is fixed on fixed connection cover one side, be equipped with the tight screw rod in the tight groove in top on the fixed connection cover opposite side, tight screw rod one end in top pass the tight groove in top and be connected with cubical switchboard static contact rod lateral wall top tightly, the tight screw rod other end in top is equipped with adjusting handle, fixing device through the slip thimble formula can make things convenient for the change of trouble cubical switchboard more, reduces to a great extent and changes the dismantlement degree of difficulty to can prolong number of times and life cycle that use.
Preferably, the resistance meter is provided with two acquisition probes which are respectively a static acquisition probe and a dynamic acquisition probe, the two acquisition probes respectively penetrate through a static probe groove of the fixed connecting sleeve and a sliding probe groove of the sliding connecting sleeve to be in contact connection with the static contact rod of the switch cabinet and the movable contact rod of the switch cabinet, the resistance meter is directly connected with a power supply in the cabinet, and the two acquisition probes are in direct abutting contact with the static contact rod of the switch cabinet and the movable contact rod of the switch cabinet, so that the sliding contact connection can be realized, the disassembly and the assembly are convenient, and the damage of the contact to the connection of the static contact rod of the switch cabinet and the movable contact rod of the switch cabinet can be reduced to a great extent.
Preferably, the movable probe groove is internally provided with a cavity, the sliding connection sleeve is further provided with a sliding probe groove, one end of the movable acquisition probe penetrates through the sliding probe groove and then is fixedly connected with the side wall of the cavity through a screw, one side wall of the movable acquisition probe is in sliding contact with the movable contact rod of the switch cabinet, the other side wall of the movable acquisition probe is connected with the sliding jacking device, tip-free contact between the probe and the contact rod can be achieved through the sliding probe with the U-shaped structure, bidirectional sliding can be achieved, and damage to the contact rod during sliding is effectively prevented.
Preferably, the tight device in slip top including slip tight pole in top and the tight spring in top, slip tight pole one end pass slip thimble groove with move and gather probe needle opposite side wall top and tightly be connected, slip tight pole other end is equipped with to detain and moves the handle, slip tight pole lateral wall on be equipped with the tight piece in top, and be equipped with the tight spring in top between tight piece in top and the cavity inner wall, can effectually improve the stability degree of contact between acquisition probe and the feeler lever lateral wall through the tight device in top.
Preferably, the acquisition module is connected with the A/D converter through an RS485 bus, and the RS485 bus is used for connection, so that wireless control over the acquisition module 1 can be effectively realized, and the fidelity effect of acquired data transmission can be effectively improved.
Preferably, the acquisition frequency of the acquisition module is 30S/time.
A switch cabinet fault early warning system comprises a replacement method:
the central processing unit receives the resistance value of the ohmmeter in the switch cabinet acquired by the acquisition module and uploads the resistance value to the display, a worker monitors the resistance value in real time, a normal resistance value fluctuation range is set in the central processing unit, if the acquired resistance value fluctuation value is within the range, the resistance value fluctuation value is fed back to the acquisition module again through the data feedback module to perform data acquisition again, and when the resistance value fluctuation value is larger than the set resistance value fluctuation range, the central processing unit outputs information to the display and simultaneously starts the alarm to prompt the worker to overhaul and replace;
when the switch cabinet is replaced, the buckling handle is pulled back outwards only after power is cut off, the movable contact rod of the switch cabinet is pulled out, then the static contact rod of the switch cabinet is pulled out by rotating the adjusting handle, and after new equipment is replaced, the fixed connecting sleeve and the sliding connecting sleeve are installed and powered on again.
The invention has the beneficial effects that:
1) through the resistance value of real-time collection cubical switchboard equipment junction, carry out the undulant condition of real time monitoring resistance value, can reach effectually carry out fault alarm to equipment to the realization carries out planned updating in advance and maintenance to cubical switchboard equipment, can effectually prevent the phenomenon of the emergent power consumption trouble that equipment appears when moving.
2) Adopt wireless intelligent mode simultaneously, can effectually reduce the influence of wire connection to the circuit breaker during operation, avoid the wire to cause the interference to whole circuit to can effectually save the cabinet inner space, improve space availability factor.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a system block diagram of a switchgear fault warning system and a method for replacing the same according to the present invention;
fig. 2 is a schematic structural diagram of a switch cabinet fault early warning system and a replacement method thereof according to the present invention.
Detailed Description
The present invention will be described in further detail below in order to enable those skilled in the art to better understand the technical solution of the present invention.
Referring to fig. 1 and 2, a switch cabinet fault early warning system comprises a central processing unit and a plurality of switch cabinet devices, wherein the switch cabinet devices comprise a switch cabinet static contact rod 1 and a switch cabinet movable contact rod 8, the switch cabinet movable contact rod 8 is embedded in a connecting groove 7 of the switch cabinet static contact rod 1, each switch cabinet static contact rod 1 and each switch cabinet movable contact rod 8 is provided with a resistance meter 2, the resistance meters 2 and the central processing unit form a device fault early warning system through an acquisition module, the input end of the acquisition module is respectively connected with the output end of each group of resistance meters 2, the output end of the acquisition module is connected with the input end of the central processing unit through an a/D converter, the output end of the central processing unit is respectively connected with a display and an alarm, and the output end of the central processing unit is also connected with the feedback input end of the acquisition module through a data feedback module, the ohmmeter is connected with the switch cabinet static contact rod 1 and the switch cabinet movable contact rod 8 through a sliding ejector pin type fixing device.
Furthermore, the sliding thimble type fixing device comprises a fixed connecting sleeve 3 and a sliding connecting sleeve 9, the fixed connecting sleeve 3 is sleeved on the switch cabinet static contact rod 1, the sliding connecting sleeve 9 is sleeved on the switch cabinet movable contact rod 8, the ohmmeter 2 is fixed on one side of the fixed connecting sleeve 3, a jacking screw rod 4 is arranged in a jacking groove 5 on the other side of the fixed connecting sleeve 3, one end of the jacking screw rod 4 penetrates through the jacking groove 5 to be tightly connected with the side wall of the switch cabinet static contact rod 1 in a jacking mode, the other end of the jacking screw rod 4 is provided with an adjusting handle 18, the sliding thimble type fixing device can be used for facilitating replacement of a fault switch cabinet more, reducing the replacement and disassembly difficulty to a great extent, and prolonging the use times and the use period.
Furthermore, the ohmmeter on be equipped with two collection probes, collection probe is quiet probe 6 and moves probe 17 respectively, and two collection probes pass the quiet probe groove 19 of fixed connection cover 3 and the slip probe groove 20 of slip adapter cover 9 respectively and be connected with cubical switchboard static contact rod 1 and cubical switchboard movable contact rod 8 contact, ohmmeter 2 directly be connected with the interior power of cabinet, through two collection probes and cubical switchboard static contact rod 1 and cubical switchboard movable contact rod 8 direct top tight contact, can enough realize the sliding contact and connect, make things convenient for the dismouting, can also reduce the contact at to a great extent and damage the connection of cubical switchboard static contact rod 1 and cubical switchboard movable contact rod 8.
Furthermore, the inside cavity 11 that is equipped with of probe groove 20 moves, still be equipped with slip thimble groove 14 on the slip adapter sleeve 9, move collection probe 17 one end pass behind slip probe groove 20 and pass through screw 10 fixed connection with cavity 11 lateral wall, move collection probe 17 a lateral wall and be connected with cubical switchboard movable contact rod 8 sliding contact, move collection probe 17 another lateral wall and pass through the tight device connection of slip top, the slip probe 17 through the U type structure can realize having no tip contact between probe and the feeler lever, can realize two-way slip to the damage to the feeler lever when effectual preventing to slide.
Further, the tight device in slip top include slip tight pole 16 in top and push up tight spring 13, slip tight pole 1 one end pass slip thimble groove 14 with move acquisition probe 17 opposite side wall top tightly be connected, slip tight pole 16 other end is equipped with to detain moves handle 15, slip tight pole 16 lateral wall on be equipped with and push up tight piece 12, and be equipped with between tight piece 12 in top and the 11 inner walls of cavity and push up tight spring 13, can effectually improve the stability of contact between acquisition probe and the feeler lever lateral wall through pushing up tight device.
Furthermore, the acquisition module is connected with the A/D converter through an RS485 bus, and the RS485 bus is used for connection, so that wireless control over the acquisition module can be effectively realized, and the fidelity effect of acquired data transmission can be effectively improved.
Further, the acquisition frequency of the acquisition module is 30S/time.
A method for replacing a switch cabinet fault early warning system comprises the following steps:
the central processing unit receives the resistance value of the ohmmeter in the switch cabinet acquired by the acquisition module and uploads the resistance value to the display, a worker monitors the resistance value in real time, a normal resistance value fluctuation range is set in the central processing unit, if the acquired resistance value fluctuation value is within the range, the resistance value fluctuation value is fed back to the acquisition module again through the data feedback module to perform data acquisition again, and when the resistance value fluctuation value is larger than the set resistance value fluctuation range, the central processing unit outputs information to the display and simultaneously starts the alarm to prompt the worker to overhaul and replace;
when the switch cabinet is replaced, the buckling handle 15 is pulled back outwards only after power is cut off, the movable contact rod of the switch cabinet is pulled out, then the fixed contact rod of the switch cabinet is pulled out by rotating the adjusting handle, and the fixed connecting sleeve and the sliding connecting sleeve are installed and powered on again after new equipment is replaced.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the foregoing description is illustrative in nature and is not to be construed as limiting the scope of the invention as claimed.
Claims (7)
1. The utility model provides a cubical switchboard fault early warning system, includes central processing unit and cubical switchboard equipment, cubical switchboard equipment be equipped with a plurality ofly, cubical switchboard equipment include cubical switchboard static contact bar and cubical switchboard movable contact rod, the cubical switchboard movable contact rod imbeds in the connecting groove of cubical switchboard static contact bar, all is equipped with ohmmeter, its characterized in that on every cubical switchboard static contact bar and the cubical switchboard movable contact rod: the ohmmeter and the central processing unit form an equipment fault early warning system through an acquisition module, the input end of the acquisition module is respectively connected with the output end of each group of ohmmeters, the output end of the acquisition module is connected with the input end of the central processing unit through an A/D converter, the output end of the central processing unit is respectively connected with a display and an alarm, the output end of the central processing unit is also connected with the feedback input end of the acquisition module through a data feedback module in a feedback way, the ohmmeter is connected with a switch cabinet static contact rod and a switch cabinet movable contact rod through a sliding thimble type fixing device, the sliding thimble type fixing device comprises a fixed connecting sleeve and a sliding connecting sleeve, the fixed connecting sleeve is sleeved on the switch cabinet static contact rod, the sliding connecting sleeve is sleeved on the switch cabinet movable contact rod, the ohmmeter is fixed on one side of the fixed connecting sleeve, and a jacking screw rod is arranged in a jacking groove on the other side of the fixed connecting sleeve, one end of the jacking screw penetrates through the jacking groove to be connected with the side wall of the static contact rod of the switch cabinet in a jacking mode, and the other end of the jacking screw is provided with an adjusting handle.
2. The switch cabinet fault early warning system according to claim 1, wherein the ohmmeter is provided with two collecting probes, the collecting probes are respectively a static collecting probe and a dynamic collecting probe, the two collecting probes respectively penetrate through a static probe groove of the fixed connecting sleeve and a dynamic probe groove of the sliding connecting sleeve to be in contact connection with the static contact rod of the switch cabinet and the dynamic contact rod of the switch cabinet, and the ohmmeter is directly connected with the power supply in the cabinet.
3. The switch cabinet fault early warning system according to claim 2, wherein the movable probe slot is internally provided with a cavity, the sliding connection sleeve is further provided with a sliding probe slot, one end of the movable acquisition probe passes through the sliding probe slot and then is fixedly connected with the side wall of the cavity through a screw, one side wall of the movable acquisition probe is in sliding contact connection with the movable contact rod of the switch cabinet, and the other side wall of the movable acquisition probe is connected with the sliding jacking device.
4. The switch cabinet fault early warning system according to claim 3, wherein the sliding tightening device comprises a sliding tightening rod and a tightening spring, one end of the sliding tightening rod penetrates through a sliding thimble groove to be tightly connected with the other side wall of the movable acquisition probe in a tightening mode, the other end of the sliding tightening rod is provided with a buckling handle, a tightening block is arranged on the side wall of the sliding tightening rod, and the tightening spring is arranged between the tightening block and the inner wall of the cavity.
5. The switch cabinet fault early warning system according to claim 1, wherein the acquisition module is connected with the A/D converter through an RS485 bus.
6. The switch cabinet fault early warning system according to claim 1, wherein the collection frequency of the collection module is 30S/time.
7. The method for replacing the switch cabinet fault warning system according to claims 1-6, characterized in that the method comprises the following steps:
the central processing unit receives the resistance value of the ohmmeter in the switch cabinet acquired by the acquisition module and uploads the resistance value to the display, a worker monitors the resistance value in real time, a normal resistance value fluctuation range is set in the central processing unit, if the acquired resistance value fluctuation value is within the range, the resistance value fluctuation value is fed back to the acquisition module again through the data feedback module to perform data acquisition again, and when the resistance value fluctuation value is larger than the set resistance value fluctuation range, the central processing unit outputs information to the display and simultaneously starts the alarm to prompt the worker to overhaul and replace;
when the switch cabinet is replaced, the buckling handle is pulled back outwards only after power is cut off, the movable contact rod of the switch cabinet is pulled out, then the static contact rod of the switch cabinet is pulled out by rotating the adjusting handle, and after new equipment is replaced, the fixed connecting sleeve and the sliding connecting sleeve are installed and powered on again.
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| CN201910665119.3A CN110412373B (en) | 2019-07-23 | 2019-07-23 | Switch cabinet fault early warning system and replacement method thereof |
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| CN201910665119.3A CN110412373B (en) | 2019-07-23 | 2019-07-23 | Switch cabinet fault early warning system and replacement method thereof |
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Effective date of registration: 20231030 Address after: No. 101-112, Building 2, Block B, Nanning Dashanghui International Building Materials City, No. 47-2 Anji Avenue, Xixiangtang District, Nanning City, Guangxi Zhuang Autonomous Region, 530000 Patentee after: Ideal house Electric Group Ltd. Address before: 230601 3rd floor, 3-D workshop, North Furong Road, Furong Road, Hefei Economic and Technological Development Zone, Anhui Province Patentee before: ANHUI SHENGLONG ELECTRIC Co.,Ltd. |