CN114167232A - Lightning flashover frequency counting device for power transmission line - Google Patents
Lightning flashover frequency counting device for power transmission line Download PDFInfo
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- CN114167232A CN114167232A CN202111414026.7A CN202111414026A CN114167232A CN 114167232 A CN114167232 A CN 114167232A CN 202111414026 A CN202111414026 A CN 202111414026A CN 114167232 A CN114167232 A CN 114167232A
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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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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Abstract
The invention provides a lightning flashover frequency counting device for a power transmission line, which comprises an electric pole, a cross arm, an insulator, a voltage equalizing ring, a lightning arrester, hardware fittings, an arc striking plate, a bracket, a detection device, a lightning stroke action mechanism, a controller, sensing equipment and a display, wherein the lightning arrester is connected with a lead through the hardware fittings, when a line is struck by lightning, lightning stroke current sequentially passes through the lightning arrester, the voltage equalizing ring and the arc striking plate, the lightning stroke current on the arc striking plate drives the lightning stroke action mechanism to make a reaction action, the reaction action information is transmitted to the controller through the sensor to calculate the lightning stroke frequency, flashover conditions at the insulator, the lightning arrester and the lead are detected through the detection device and transmitted to the controller to be subjected to information processing, the lightning stroke frequency and the flashover information calculated by the controller are displayed through the display, and the functions of lightning stroke counting and flashover counting are combined, the inspection workload is reduced, and the fault information can be fed back to a certain extent, so that the maintenance efficiency is improved to maintain the normal work of the line.
Description
Technical Field
The invention relates to the technical field of lightning protection of overhead lines of a power distribution network, in particular to a lightning flashover frequency counting device for a power transmission line.
Background
In the distribution network, adopt insulated conductor to solve the corridor and the safety problem that bare conductor can not solve, compare with the cable, adopt insulated conductor investment province, construction fast, the advantage is very obvious. However, the insulated conductor has its own weakness, namely the problem of breaking of the conductor by lightning strike, so that corresponding lightning protection measures are necessary.
Generally, a lightning arrester, an insulator, a protective hardware fitting and the like are used for protection, and the protective device can not calibrate the line lightning stroke generally, so that a worker can not maintain the line in time, and the normal operation of the line is influenced; after the circuit is struck by lightning, the circuit can still be used due to the fact that the lightning protection device is damaged, the damaged lightning protection device is not easy to be found by inspection personnel, the lightning protection device cannot be maintained and replaced in time, and the lightning protection effect of the circuit is affected; when the circuit suffered the thunderbolt, the phenomenon of flashover took place easily with the insulating surface of lightning protection device to the outside insulating rubber cover of electric wire, and this kind of flashover phenomenon produces the spark easily at insulating surface, causes circuit or device damage or even burns out, needs the staff to patrol and examine the inspection of the situation of circuit and device usually, need consume a large amount of human labor resources and appear easily omitting, influences the normal work of circuit.
Disclosure of Invention
The invention aims to provide a lightning flashover frequency counting device for a power transmission line aiming at overcoming the defects in the prior art, and aims to solve the problems that the lightning strike drop point is difficult to position, the flashover phenomenon is difficult to detect, the difficulty of routing inspection work is increased, and the normal work of the line is influenced.
The invention provides a lightning flashover frequency counting device for a transmission line, which comprises:
the lightning arrester comprises an electric pole, wherein a cross arm is arranged on the electric pole, an insulator is detachably arranged on the cross arm, a uniform compression ring and a lightning arrester are arranged at the upper end of the insulator, a hardware fitting for connecting a wire is arranged on the lightning arrester, and an arc striking plate is arranged at the lower end of the insulator;
the bracket is arranged on the cross arm, and a detection device for detecting the flashover times of the insulator, the lightning arrester and the outer surface of the lead is arranged on the bracket;
the lightning stroke action mechanism is arranged on the cross arm, is electrically connected with the arc striking plate and can make a reaction action in the discharging process of the arc striking plate;
the controller is arranged on the electric pole and electrically connected with the detection device, and can collect flashover information detected by the detection device;
the sensing equipment is connected with the lightning stroke action mechanism and can transmit the reaction action information of the lightning stroke action mechanism to the controller, and the controller can calculate the lightning stroke times according to the reaction action information;
the display, the display sets up on the pole, the display with controller electric connection can show flashover number of times and thunderbolt number of times.
Preferably, lightning stroke actuating mechanism includes the electro-magnet, removes frame, reset spring, ratchet, pawl subassembly and elastic component, be provided with the box on the cross arm, the ratchet rotates to be installed on the box, it removes to install to remove the frame on the box, pawl subassembly articulates to be set up remove on the frame and under the effect of elastic component elasticity butt is in on the ratchet, the electro-magnet with run-on plate electric connection sets up on the box, remove on the frame be provided with electro-magnet complex magnetism portion of inhaling, reset spring sets up on the box and be used for ordering about remove the frame and reset.
Preferably, the movable frame is provided with a protruding portion, the box body is provided with a mounting groove for the protruding portion to be movably mounted, the mounting groove is provided with an abutting portion for the protruding portion to abut against, and the return spring is arranged on the mounting groove and can abut against and push the protruding portion so that the protruding portion abuts against the abutting portion.
Preferably, the protruding part is provided with a guide post for sleeving and mounting the return spring.
Preferably, the pawl component comprises a hook claw and an arc claw, the hook claw and the arc claw are respectively hinged to two ends of the moving frame, the hook claw and the arc claw are respectively and elastically abutted to two ends of the ratchet wheel under the action of the elastic piece, the hook claw can push the ratchet wheel to rotate along with the rising of the moving frame, and the arc claw can push the ratchet wheel to rotate along with the falling of the moving frame.
Preferably, the elastic part is torsion springs arranged in pairs, and the two torsion springs are respectively arranged on the hook claw and the arc claw and can drive the hook claw and the arc claw to elastically abut against the ratchet wheel.
Preferably, the sensing device is an angle sensor, a sensing rotating shaft of the angle sensor is connected with the ratchet wheel and can rotate along with the ratchet wheel, and the angle sensor can measure the rotation angle information of the ratchet wheel through the sensing rotating shaft and transmit the information to the controller.
Preferably, the arrester with the insulator is made as an organic whole compression molding, even clamping ring sets up the insulator with the boundary department of arrester, be provided with the irreversible change pigment on the even clamping ring, this irreversible change pigment can change colour under the effect of thunderbolt.
Preferably, the detection device includes a first photoelectric tube and a second photoelectric tube, the first photoelectric tube and the second photoelectric tube are both disposed on the bracket, the first photoelectric tube and the second photoelectric tube are respectively electrically connected to the controller, the first photoelectric tube can detect flashover information outside the arrester and the insulator and send the flashover information to the controller, the second photoelectric tube can detect flashover information of a wire and send the information to the controller, and the controller can calculate flashover times of the arrester, the insulator and the wire according to the information detected by the first photoelectric tube and the second photoelectric tube.
Preferably, be provided with communication module on the pole, communication module with controller electric connection can with the information transmission that controller department obtained reaches remote control terminal department.
Compared with the prior art, the invention has the following beneficial effects:
when the circuit takes place thunderbolt, the thunderbolt electric current loops through the arrester, equalizer ring and run-on plate, the thunderbolt electric current on the run-on plate orders thunderbolt actuating mechanism and makes the reaction action, and calculate the thunderbolt number of times with this reaction action information transmission to controller department through the sensor, detect the insulator through detection device, the flashover situation of arrester and wire department and carry out information processing with flashover information transmission to controller department, the thunderbolt number of times and the flashover information that calculate through the display controller, have the function of thunderbolt count and flashover count, reduce and patrol and examine work load and can feed back fault information to a certain extent and be favorable to improving maintenance efficiency in order to maintain the normal work of circuit.
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 exercise.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural view of a lightning arrester according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a sensing device and ratchet arrangement according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a lightning strike actuation mechanism according to an embodiment of the invention;
FIG. 5 is a schematic view of the structure of the mounting groove and the protrusion according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an elastic member according to an embodiment of the present invention.
In the figure, 10-pole; 11-cross arm; 12-a controller; 13-a display; 14-a communication module; 20-an insulator; 21-homogenizing a pressure ring; 22-arc striking plate; 30-a lightning arrester; 31-hardware fittings; 40-a scaffold; 50-a detection device; 51-a first photocell; 52-a second photocell; 60-a lightning stroke action mechanism; 61-an electromagnet; 62-a moving rack; 621-magnetic attraction part; 622-boss; 623-a guide column; 63-a return spring; 64-ratchet wheel; 65-a pawl assembly; 651-collude claw; 652-arc claw; 66-an elastic member; 70-a sensing device; 80-a box body; 81-mounting grooves; 82-abutment.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
Example 1:
referring to fig. 1 to 6, the present invention provides a lightning flashover frequency counting device for a power transmission line, including:
the lightning arrester comprises an electric pole 10, wherein a cross arm 11 is arranged on the electric pole 10, an insulator 20 is detachably arranged on the cross arm 11, a voltage equalizing ring 21 and a lightning arrester 30 are arranged at the upper end of the insulator 20, a hardware fitting 31 for connecting a wire is arranged on the lightning arrester 30, and an arc striking plate 22 is arranged at the lower end of the insulator 20;
the bracket 40 is arranged on the cross arm 11, and the bracket 40 is provided with a detection device 50 for detecting the flashover times of the insulator 20, the lightning arrester 30 and the outer surface of the lead;
the lightning stroke action mechanism 60 is arranged on the cross arm 11, and the lightning stroke action mechanism 60 is electrically connected with the arc striking plate 22 and can make a reaction action in the discharging process of the arc striking plate 22;
the controller 12 is arranged on the electric pole 10, the controller 12 is electrically connected with the detection device 50, and the controller 12 can collect flashover information detected by the detection device 50;
the sensing device 70 is connected with the lightning stroke action mechanism 60, and can transmit the reaction action information of the lightning stroke action mechanism 60 to the controller 12, and the controller 12 can calculate the lightning stroke frequency according to the reaction action information;
and the display 13, the display 13 is arranged on the electric pole 10, and the display 13 is electrically connected with the controller 12 and can display the flashover times and the lightning stroke times.
When a line is struck by lightning, lightning current sequentially passes through the lightning arrester 30, the voltage equalizing ring 21 and the arc striking plate 22, the lightning current on the arc striking plate 22 drives the lightning striking action mechanism 60 to perform reaction action, the reaction action information is transmitted to the controller 12 through the sensor to calculate lightning striking times, the flashover conditions of the insulator 20, the lightning arrester 30 and a wire are detected through the detection device 50, the flashover information is transmitted to the controller 12 to be processed, the lightning striking times and the flashover information calculated by the controller 12 are displayed through the display 13, the functions of lightning striking counting and flashover counting are achieved, the inspection workload is reduced, and fault information can be fed back to a certain extent, so that the maintenance efficiency is improved to maintain the normal work of the line. Wherein, controller 12 is the control system that a plurality of STM32 singlechips constitute.
Specifically, lightning stroke actuating mechanism 60 includes electro-magnet 61, remove frame 62, reset spring 63, ratchet 64, pawl subassembly 65 and elastic component 66, be provided with box 80 on the cross arm 11, ratchet 64 rotates and installs on box 80, remove frame 62 and remove and install on box 80, pawl subassembly 65 articulates and sets up on removing frame 62 and elasticity butt on ratchet 64 under elastic component 66's effect, electro-magnet 61 and run-on plate 22 electric connection and set up on box 80, be provided with on removing frame 62 with electro-magnet 61 complex magnetism portion 621 of inhaling, reset spring 63 sets up on box 80 and is used for driving about removing frame 62 and reseing.
Specifically, the movable frame 62 is provided with a protruding portion 622, the box 80 is provided with a mounting groove 81 for movably mounting the protruding portion 622, the mounting groove 81 is provided with an abutting portion 82 for abutting against the protruding portion 622, and the return spring 63 is provided on the mounting groove 81 and can abut against the protruding portion 622 so that the protruding portion 622 abuts against the abutting portion 82.
Specifically, the protruding portion 622 is provided with a guide post 623 for the return spring 63 to be sleeved and mounted.
Specifically, the pawl assembly 65 includes a hook claw 651 and an arc claw 652, the hook claw 651 and the arc claw 652 are respectively hinged to two ends of the moving frame 62, the hook claw 651 and the arc claw 652 are respectively elastically abutted to two ends of the ratchet wheel 64 under the action of the elastic member 66, the hook claw 651 can push the ratchet wheel 64 to rotate as the moving frame 62 ascends, and the arc claw 652 can push the ratchet wheel 64 to rotate as the moving frame 62 descends.
Specifically, the elastic members 66 are torsion springs disposed in pairs, and the two torsion springs are disposed on the hook claw 651 and the arc claw 652 respectively and can drive the hook claw 651 and the arc claw 652 to elastically abut against the ratchet wheel 64.
When lightning current passes through the arc striking plate 22, the electromagnet 61 generates magnetism under the action of the lightning current and acts on the magnetic attraction part 621 to drive the moving frame 62 to move upwards, the moving frame 62 drives the hook claw 651 and the arc claw 652 to move upwards, the hook claw 651 moves upwards to drive the ratchet wheel 64 to rotate for a certain angle, after the lightning current is discharged, the moving frame 62 resets under the action of the spring, the hook claw 651 and the arc claw 652 are driven to move downwards in the resetting process of the moving frame 62, and the arc claw 652 moves downwards to drive the ratchet wheel 64 to rotate for a certain angle, wherein torsion springs arranged in pairs respectively act on the hook claw 651 and the arc claw 652 to enable the hook claw 651 and the arc claw 652 to elastically abut against the ratchet wheel 64, so that the hook claw 651 and the arc claw 652 rotate the ratchet wheel 64, and the function of driving the ratchet wheel 64 to rotate for a certain angle in the lightning process is realized.
Specifically, the sensing device 70 is an angle sensor, a sensing rotating shaft of the angle sensor is connected to the ratchet wheel 64 and can rotate along with the ratchet wheel 64, and the angle sensor can measure the rotation angle information of the ratchet wheel 64 through the sensing rotating shaft and transmit the information to the controller 12.
The angle sensor detects the rotation angle of the ratchet wheel 64 through the sensing rotation shaft of the angle sensor and sends the rotation angle information of the ratchet wheel 64 to the controller 12, the controller 12 judges the number of lightning strokes according to the angle information, and the calculation mode of judging the number of lightning strokes of the controller is as follows: the number of lightning strikes is the total rotation angle of the ratchet wheel 64/the single lightning strike rotation angle of the ratchet wheel 64. The angle sensor is model LAT 116T.
Example 2:
referring to fig. 1 to 6, in combination with the technical solution of embodiment 1, in this embodiment, the arrester 30 and the insulator 20 are integrally molded by compression, the grading ring 21 is disposed at a boundary between the insulator 20 and the arrester 30, and the grading ring 21 is provided with an irreversible change pigment which can change color under the action of lightning strike.
The insulator 20 and the lightning arrester 30 are molded integrally, so that wire stripping or puncture is not needed during installation, and the influence of a construction process on an insulated wire is eliminated; when the lightning stroke amplitude is too high, the lightning arrester 30 is broken down, the insulator 20 still has the function of supporting a wire, and a line can continue to run, so that the line problem caused by the fault of the lightning arrester 30 can be reduced; through the special irreversible pigment of spraying on grading ring surface, when 30 breakdowns of arrester were punctured, power frequency electric arc was applyed on the grading ring, and the grading ring becomes black by orange, and the personnel of being convenient for patrol and examine seek.
Specifically, the detecting device 50 includes a first photoelectric tube 51 and a second photoelectric tube 52, the first photoelectric tube 51 and the second photoelectric tube 52 are both disposed on the bracket 40, the first photoelectric tube 51 and the second photoelectric tube 52 are respectively electrically connected to the controller 12, the first photoelectric tube 51 can detect flashover information outside the arrester 30 and the insulator 20 and send the information to the controller 12, the second photoelectric tube 52 can detect flashover information of the wires and send the information to the controller 12, and the controller 12 can calculate the number of flashover times of the arrester 30, the insulator 20 and the wires according to the information detected by the first photoelectric tube 51 and the second photoelectric tube 52. The first and second photocells 51 and 52 are of the type GD-31.
Specifically, the electric pole 10 is provided with a communication module 14, and the communication module 14 is electrically connected to the controller 12 and can transmit the information acquired by the controller 12 to the remote control terminal. The lightning stroke frequency and the flashover frequency of the circuit are transmitted to a remote control terminal through the communication module 14 and the controller 12, the circuit monitoring device has the function of monitoring the circuit, and is beneficial to positioning and obtaining circuit fault information by workers, so that the circuit maintenance work efficiency is improved. The model of the communication module 14 is H7710 DTU, and the remote control terminal is an intelligent device such as a mobile phone and a computer.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Those skilled in the art can make many possible variations and modifications to the disclosed solution, or modify equivalent embodiments using the teachings set forth above, without departing from the scope of the claimed solution. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technology of the present invention are within the protection scope of the present invention, unless the content of the technical solution of the present invention is departed from.
Claims (10)
1. The utility model provides a number of times counting assembly is flashover with thunderbolt for transmission line which characterized in that includes:
the lightning arrester comprises an electric pole, wherein a cross arm is arranged on the electric pole, an insulator is detachably arranged on the cross arm, a uniform compression ring and a lightning arrester are arranged at the upper end of the insulator, a hardware fitting for connecting a wire is arranged on the lightning arrester, and an arc striking plate is arranged at the lower end of the insulator;
the bracket is arranged on the cross arm, and a detection device for detecting the flashover times of the insulator, the lightning arrester and the outer surface of the lead is arranged on the bracket;
the lightning stroke action mechanism is arranged on the cross arm, is electrically connected with the arc striking plate and can make a reaction action in the discharging process of the arc striking plate;
the controller is arranged on the electric pole and electrically connected with the detection device, and can collect flashover information detected by the detection device;
the sensing equipment is connected with the lightning stroke action mechanism and can transmit the reaction action information of the lightning stroke action mechanism to the controller, and the controller can calculate the lightning stroke times according to the reaction action information;
the display, the display sets up on the pole, the display with controller electric connection can show flashover number of times and thunderbolt number of times.
2. The lightning stroke flashover frequency counting device for the transmission line according to claim 1, characterized in that:
lightning stroke actuating mechanism includes the electro-magnet, removes frame, reset spring, ratchet, pawl subassembly and elastic component, be provided with the box on the cross arm, the ratchet rotates to be installed on the box, it removes to install to remove the frame on the box, pawl subassembly articulates to set up remove to put up and elastic component's effect down elasticity butt is in on the ratchet, the electro-magnet with run-on plate electric connection sets up on the box, remove to put up be provided with the portion is inhaled to electro-magnet complex magnetism, reset spring sets up be used for ordering about on the box remove the frame and reset.
3. The lightning stroke flashover frequency counting device for the transmission line according to claim 2, characterized in that:
the movable support is provided with a protruding portion, the box body is provided with a mounting groove for the protruding portion to be movably mounted, the mounting groove is provided with a butting portion for the protruding portion to be butted against, and the reset spring is arranged on the mounting groove and can be abutted against and pushed against the protruding portion to enable the protruding portion to be butted against the butting portion.
4. The device for counting the number of lightning flashover times for the transmission line according to claim 3, characterized in that:
the protruding part is provided with a guide post for sleeving and installing the return spring.
5. The device for counting the number of lightning flashover times for a transmission line according to claim 2, wherein:
the pawl component comprises a hook claw and an arc claw, the hook claw and the arc claw are respectively hinged to two ends of the moving frame, the hook claw and the arc claw are respectively and elastically abutted against two ends of the ratchet wheel under the action of the elastic piece, the hook claw can push the ratchet wheel to rotate along with the rising of the moving frame, and the arc claw can push the ratchet wheel to rotate along with the falling of the moving frame.
6. The device for counting the number of lightning flashover times for a transmission line according to claim 5, wherein:
the elastic piece is the torsional spring that sets up in pairs, and two torsional springs set up respectively collude the claw with on the arc claw and can drive collude the claw with arc claw elasticity butt is in on the ratchet.
7. The device for counting the number of lightning flashover times for a transmission line according to claim 2, wherein:
the sensing device is an angle sensor, a sensing rotating shaft of the angle sensor is connected with the ratchet wheel and can rotate along with the ratchet wheel, and the angle sensor can measure the corner information of the ratchet wheel through the sensing rotating shaft and transmit the information to the controller.
8. The device for counting the number of lightning flashover times for a transmission line according to claim 1, characterized in that:
the arrester with the insulator is compression molding as an organic whole and makes, even clamping ring sets up the insulator with the boundary department of arrester, be provided with the irreversible change pigment on the even clamping ring, this irreversible change pigment can change colour under the effect of thunderbolt.
9. The device for counting the number of lightning flashover times for a transmission line according to claim 1, characterized in that:
the detection device comprises a first photoelectric tube and a second photoelectric tube, the first photoelectric tube and the second photoelectric tube are arranged on the support and are respectively electrically connected with the controller, the first photoelectric tube can detect flashover information outside the arrester and the insulator and send the flashover information to the controller, the second photoelectric tube can detect flashover information of a wire and send the information to the controller, and the controller can calculate flashover times of the arrester, the insulator and the wire according to the information detected by the first photoelectric tube and the second photoelectric tube.
10. The device for counting the number of lightning flashover times for a transmission line according to claim 1, characterized in that:
be provided with communication module on the pole, communication module with controller electric connection and can with the information transmission that controller department acquireed reaches remote control terminal department.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111414026.7A CN114167232A (en) | 2021-11-25 | 2021-11-25 | Lightning flashover frequency counting device for power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111414026.7A CN114167232A (en) | 2021-11-25 | 2021-11-25 | Lightning flashover frequency counting device for power transmission line |
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| CN114167232A true CN114167232A (en) | 2022-03-11 |
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| CN202111414026.7A Pending CN114167232A (en) | 2021-11-25 | 2021-11-25 | Lightning flashover frequency counting device for power transmission line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117269587A (en) * | 2023-11-21 | 2023-12-22 | 国网辽宁省电力有限公司 | Lightning stroke detection device and method for high-voltage transmission line |
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