CN108549021A - A kind of experimental rig and method for the research of environment-friendly type gas arc extinction performance - Google Patents
A kind of experimental rig and method for the research of environment-friendly type gas arc extinction performance Download PDFInfo
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- 230000008033 biological extinction Effects 0.000 title claims abstract description 24
- 238000011160 research Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000003068 static effect Effects 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 238000002474 experimental method Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 21
- 239000012212 insulator Substances 0.000 claims description 19
- 238000007600 charging Methods 0.000 claims description 18
- 208000028659 discharge Diseases 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 8
- 238000010891 electric arc Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 4
- 238000005422 blasting Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- VPAYJEUHKVESSD-UHFFFAOYSA-N trifluoroiodomethane Chemical compound FC(F)(F)I VPAYJEUHKVESSD-UHFFFAOYSA-N 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 34
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
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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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
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Abstract
A kind of experimental rig and method for the research of environment-friendly type gas arc extinction performance of the present invention, including main casing, spout, cylinder, piston, piston supporting rod, lower cover moving contact, static contact, motor pull rod, pull rod, insulated tension pole and driving motor, experimental rig proposed by the present invention considerably reduces gas consumption relative to breaker during being tested, to reduce experimentation cost；Each parts are common in experimental rig proposed by the present invention and easy processing, convenient for disassembly and assembly, are convenient for later maintenance；Experimental rig of the present invention solves the problems, such as to do experiment using molded breaker restricts pilot project expansion to a certain extent, and experimental rig of the present invention can carry out multiple pilot projects simultaneously, to adapt to the requirement of different tests project.
Description
Technical field
The invention belongs to high-tension switch gear technical fields, more particularly to a kind of to be studied for environment-friendly type gas arc extinction performance
Experimental rig and method.
Background technology
With the development of power technology, SF6Electrical equipment is widely used, SF6With very strong electronegativity, have
Excellent arc extinction performance and dielectric strength, heat-conductive characteristic is good, is easy compound and will not decomposite carbon particle.But high and cold
Area, SF6Gas is easy liquefaction, while SF6It is a kind of gas that greenhouse effect value is very high, effect on environment is very big.Therefore seek
SF6Substitute the trend that gas has been inevitable.
Currently, for SF6The research emphasis for substituting gas is mainly its insulation performance and arc extinction performance, and for arc-extinguishing
The experimental study majority of energy is to access breaker in the dedicated test loop in experiment station to carry out.Due to current gas circuit breaker electric
Press grade generally all in 40.5kV or more, breaker body is larger, and gas consumption consequently also can be larger during experiment, this undoubtedly can
Increase experimentation cost.Being tested in dedicated test loop simultaneously can also be constrained by a variety of conditions in experiment station, for
It is very unfavorable for experimental study.In addition to this, it is done experiment using molded breaker and also constrains examination to a certain extent
The expansion for testing project is unfavorable for multiple pilot projects while carrying out.
Invention content
In view of the problems of the existing technology, the present invention provides a kind of experiment for the research of environment-friendly type gas arc extinction performance
Device and method realizes SF6The experimental study for substituting gas arc extinction performance, simplifies test loop, greatly reduces use
Tolerance has saved experimentation cost.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of experimental rig for the research of environment-friendly type gas arc extinction performance, including steelframe, cylinder and charging unit, it is described
Steelframe top is provided with lower cover, and bottom end is provided with dynamic sealing seat at the lower cover center, is set in the dynamic sealing seat groove
It is equipped with dynamic sealing seat ring, and lower cover lower surface is against at the top of dynamic sealing seat ring, air inlet/outlet, institute are offered on the lower cover
It states and is welded with nut at the top of lower cover, and nut is located at lower cover through-hole surrounding, is bolted with main casing at the top of the lower cover, institute
It states main casing middle and upper part sidewall symmetry and is welded with lateral shell, the lateral shell end is provided with lateral housing cover, described
It is bolted with disc insulator at the top of main casing, the steelframe bottom is installed with driving motor, the driving motor output shaft
End is rotatablely installed with motor connection lever big end, and the motor connection lever small end is rotatablely installed with connecting rod one end, the connecting rod other end
It is connect with insulated tension pole one end, and insulated tension pole sequentially passes through dynamic sealing seat ring and lower cover through-hole and extends in main casing
Chamber, the cylinder are located at main casing intracoelomic cavity, and the cylinder end is provided with pull rod holder, are offered on the pull rod holder and spiral shell
Female concentric through-hole, the through-hole wall are equipped with sliding bearing, and the insulated tension pole other end is screwed onto pull rod holder bottom
End middle part, the cylinder inner wall are slidably fitted with piston, and the piston bottom end is installed with piston supporting rod, and piston supports
Bar is fixedly mounted through sliding bearing and with nut, and the cylinder inner wall piston tip is installed with moving contact support plate, institute
It states and is bolted with moving contact at the top of moving contact support plate, the cylinder head is bolted with spout, and the disc insulator bottom end is fixed
Static contact fixed seat is installed, and is extended in disc insulator through-hole at the top of static contact fixed seat, the static contact fixed seat
Bottom is installed with static contact, and static contact is located at main casing intracoelomic cavity, and high pressure is installed at the top of the disc insulator
Conducting rod, and high-voltage conductive rod bottom extends in disc insulator through-hole and is fitted closely at the top of static contact fixed seat；
The charging unit output end is electrically connected with charge switch, after the charge switch output end is in parallel with charging capacitor
It is electrically connected reactance and sensor three, the reactance is electrically connected closing switch, and the closing switch is electrically connected the equivalent electricity in circuit
Resistance, the circuit equivalent resistance are electrically connected high-voltage conductive rod, and the high-voltage conductive rod is electrically connected sensor one, the sensor one
It is electrically connected oscillograph, three output end of the sensor is electrically connected lower cover and oscillograph, the lower cover electrical connection sensing
Device two, two output end of the sensor are electrically connected oscillograph, and the driving motor is electrically connected with driving motor control system.
The driving motor is set as limited rotary angle permanent magnet brshless DC motor.
The main casing is the open hollow circuit cylinder cylinder of upper and lower ends, and the lateral shell one end is open, the other end
It is closed hollow circuit cylinder cylinder.
The point-to-point speed of the insulated tension pole is 3.2m/s.
The length of the motor connection lever and connecting rod ratio is 1:2.
The main casing height is 480mm, a diameter of 325mm, and internal total gas capacity is 40L.
The cylinder bore diameter is set as 90mm, and the cylinder gas capacity is 0.9L.
The moving contact, static contact and spout use the standard component of 40.5kV/31.5kA self-blasting circuit breakers, described dynamic
Contact outer diameter is 25mm, and the static contact internal diameter is 25.2mm, and the two uses plug-in type docking mode, the moving contact machinery
Characteristic design parameter：Stroke is 96mm, is opened away from 60mm, excess of stroke 36mm.
A kind of test method for the research of environment-friendly type gas arc extinction performance, it is arc-extinguishing for environment-friendly type gas using one kind
The experimental rig that can be studied, includes the following steps,
Step 1 verifies experimental rig driving motor control system, and driving motor control system includes mainly electricity
Container charge-discharge circuit, inversion isolated drive circuit and moving contact velocity checking circuits, make it meet the conjunction needed for experiment process
Operation is divided to require, driving motor control system flow chart is as shown in Figure 3；
Step 2, disc insulator, main casing and the lower cover junction of checkout facility device, main casing and lateral shell
It is airtight at dynamic sealing between commissure, lateral shell and lateral housing cover junction and bottom end cover and insulated tension pole
Property, by air inlet/outlet to being filled with gas in the main casing and lateral shell；
Step 3 adjusts the switching parameter in test loop, and experimental rig is initially "on" position, and adjustment closing switch is extremely
Gate-dividing state；
Step 4 opens charge switch and carries out charging to preset voltage value to main capacitance, while driving motor being controlled
System is set as operational ready state；
Step 5, charge closing switch, starts process of measurement；Closing switch executes feed motion, and electricity occurs in test loop
Stream, after the preset time, experimental rig executes sub-switching operation；
Step 6 can measure the wave of the arc voltage u during experimental rig arcing by sensor one and sensor two
Shape can measure the waveform of the arc current i during arcing, sensor one, sensor two and sensor three by sensor three
Data measured is transferred to oscillograph, confirms and is preserved after the data of oscillograph acquisition are accurate, operation discharge switch is to main electricity
Hold and carries out discharge treatment；
Step 7 carries out data by the oscillogram of test measurement arc current and arc voltage and by MATLAB softwares
Processing, you can obtain corresponding arc duration constant θ and electric arc distributes power N, can judge the arc-extinguishing of the gas accordingly
Energy.
The gas being filled in the main casing and lateral shell may be configured as N according to different pilot projects2、C4F7N or
CF3I environment-friendly type gases.
Beneficial effects of the present invention：
1, experimental rig proposed by the present invention considerably reduces gas consumption relative to breaker during being tested,
To reduce experimentation cost.
2, each parts are common in experimental rig proposed by the present invention and easy processing, convenient for disassembly and assembly, are convenient for later maintenance.
3, experimental rig of the present invention solves to do experiment using molded breaker restricts experiment item to a certain extent
The problem of mesh is expanded, experimental rig of the present invention can carry out multiple pilot projects simultaneously, to adapt to the requirement of different tests project.
Description of the drawings
Fig. 1 is experimental rig structural schematic diagram of the present invention；
Fig. 2 is test principle figure of the present invention；
Fig. 3 is experimental rig arc extinguishing process schematic of the present invention；
Fig. 4 is driving motor control system control flow chart of the present invention；
Fig. 5 is controlling test flow chart of the present invention；
1- steelframes, 2- cylinders, 3- lower covers, 4- dynamic sealing seats, 5- dynamic sealing seat rings, 6- air inlet/outlets, 7- nuts, 8- master
Shell, the lateral shells of 9-, the lateral housing covers of 10-, 11- disc insulators, 12- driving motors, 13- motor connection levers, 14- connect
Bar, 15- insulated tension poles, 16- pull rod holders, 17- sliding bearings, 18- pistons, 19- piston supporting rods, 20- moving contact support plates,
21- moving contacts, 22- spouts, 23- static contact fixed seats, 24- static contacts, 25- high-voltage conductive rods, 26- charging units, 27- oscillographys
Device, 28- sensors one, 29- sensors two, 30- sensors three, 31- driving motor control systems, S- charge switch, C- chargings
Capacitance, L- reactance, HK- closing switchs, the circuits R- equivalent resistance.
Specific implementation mode
With reference to embodiment, the present invention is described in further detail.
As depicted in figs. 1 and 2, a kind of experimental rig for the research of environment-friendly type gas arc extinction performance, including steelframe 1, gas
Cylinder 2 and charging unit 26,1 top of the steelframe are provided with lower cover 3, and bottom end is provided with dynamic sealing at 3 center of the lower cover
Seat 4 is provided with dynamic sealing seat ring 5 in 4 groove of dynamic sealing seat, and 5 top of dynamic sealing seat ring is against 3 lower surface of lower cover,
Dynamic sealing seat ring 5 plays the role of ensureing the air-tightness between insulated tension pole 15 and lower cover 3, is offered on the lower cover 3
Air inlet/outlet 6,3 top of the lower cover is welded with nut 7, and nut 7 is located at 3 through-hole surrounding of lower cover, and the lower cover 3 pushes up
Portion is bolted with main casing 8, and 8 middle and upper part sidewall symmetry of the main casing is welded with lateral shell 9, and 9 end of lateral shell is set
It is equipped with lateral housing cover 10, lateral shell 9 is that glass vision panel to be done observes internal arc extinguishing process, second is that by beating
It opens lateral housing cover 10 and is put into temperature sensor and pressure sensor into main casing 8,8 top of the main casing is bolted with basin
Formula insulator 11,1 bottom of the steelframe are installed with driving motor 12, and the driving motor 12 exports shaft end and connects with motor
13 big end of bar is rotatablely installed, and 13 small end of the motor connection lever and 14 one end of connecting rod are rotatablely installed, 14 other end of the connecting rod with absolutely
15 one end of edge pull rod connects, and insulated tension pole 15 sequentially passes through dynamic sealing seat ring 5 and 3 through-hole of lower cover and extends to main casing 8
Inner cavity, the cylinder 2 are located at 8 inner cavity of main casing, and 2 bottom end of the cylinder is provided with pull rod holder 16, on the pull rod holder 16
The through-hole concentric with nut 7 is offered, the through-hole wall is equipped with sliding bearing 17,15 other end spiral shell of the insulated tension pole
It is connected on 16 center bottom of pull rod holder, 2 inner wall of the cylinder is slidably fitted with piston 18, and 18 bottom end of the piston is installed with
Piston supporting rod 19, piston supporting rod 19 are set as four, when 2 entirety of cylinder moves downward, and the gas in cylinder 2 is produced by compression
Raw pressure, when piston supporting rod 19, which is set as four, prevents pressure excessive, 19 insufficient strength of piston supporting rod occurs bending and deformation
Phenomenon, and piston supporting rod 19 is fixedly mounted through sliding bearing 17 and with nut 7,2 inner wall piston of the cylinder, 18 top is solid
Dingan County is equipped with moving contact support plate 20, and 20 top of the moving contact support plate is bolted with moving contact 21, and 2 top of the cylinder is spirally connected
There is spout 22,11 bottom end of the disc insulator is installed with static contact fixed seat 23, and 23 top of static contact fixed seat is prolonged
It extends in 11 through-hole of disc insulator, 23 bottom of static contact fixed seat is installed with static contact 24, and static contact 24
In 8 inner cavity of main casing, 11 top of the disc insulator is installed with high-voltage conductive rod 25, and 25 bottom of high-voltage conductive rod is prolonged
It extends in 11 through-hole of disc insulator and is fitted closely with 23 top of static contact fixed seat；
26 output end of the charging unit is electrically connected with charge switch S, the charge switch S output ends and charging capacitor C
Reactance L and sensor 3 30, the reactance L electrical connection closing switchs HK, the closing switch HK electricity are electrically connected after parallel connection
Link circuit equivalent resistance R, the circuit equivalent resistance R are electrically connected high-voltage conductive rod 25, and the high-voltage conductive rod 25 is electrically connected
Sensor 1, the sensor 1 are electrically connected oscillograph 27, and 3 30 output end of the sensor is electrically connected lower cover 3
With oscillograph 27, the lower cover 3 is electrically connected sensor 2 29, and 2 29 output end of the sensor is electrically connected oscillograph 27, institute
Driving motor 12 is stated to be electrically connected with driving motor control system 31.
The driving motor 12 is set as limited rotary angle permanent magnet brshless DC motor, and driving motor 12 is set as finite angle
What permanent-magnet brushless DC electric machine can make insulated tension pole 15 moves up and down distance controlling in the range of requiring.
The main casing 8 is the open hollow circuit cylinder cylinder of upper and lower ends, and described 9 one end of lateral shell is opening, another
End is closed hollow circuit cylinder cylinder.
The point-to-point speed of the insulated tension pole 15 is 3.2m/s.
The length ratio of the motor connection lever 13 and connecting rod 14 is 1:2.
8 height of the main casing is 480mm, a diameter of 325mm, and internal total gas capacity is 40L.
2 internal diameter of the cylinder is set as 90mm, and 2 gas capacity of the cylinder is 0.9L.
The moving contact 21, static contact 24 and spout 22 use the standard component of 40.5kV/31.5kA self-blasting circuit breakers,
21 outer diameter of the moving contact is 25mm, and 24 internal diameter of the static contact is 25.2mm, and the two uses plug-in type docking mode, described
21 mechanical property design parameter of moving contact：Stroke is 96mm, is opened away from 60mm, excess of stroke 36mm.
A kind of test method for the research of environment-friendly type gas arc extinction performance, it is arc-extinguishing for environment-friendly type gas using one kind
The experimental rig that can be studied, includes the following steps,
Test operation is carried out in the test loop of 1.6kV/1.5kA, controlling test flow as shown in figure 5,
Step 1 verifies experimental rig driving motor control system 31, and driving motor control system 31 is mainly wrapped
21 velocity checking circuits of charging capacitor C charge-discharge circuits, inversion isolated drive circuit and moving contact are included, it is made to meet experiment process
Required conjunction point operation requires, and 12 control system flow chart of driving motor is as shown in Figure 4；
Step 2,3 junction of disc insulator 11, main casing 8 and lower cover, main casing 8 and the side of checkout facility device
To 9 commissure of shell, lateral shell 9 and lateral moving between 10 junction of housing cover and bottom end cover 3 and insulated tension pole 15
Air-tightness at sealing, by air inlet/outlet 6 to being filled with gas to 0.5Mpa in the main casing 8 and lateral shell 9；
Step 3, adjusts the switching parameter in test loop, and experimental rig is initially "on" position, adjustment closing switch HK
To gate-dividing state；
Step 4 calls charging capacitor C voltage to detect subprogram, is detected to charging capacitor C voltage, judges to fill first
Whether electricity is completed, and when reaching 1.6kv, is directly entered step 5；As not up to 1.6kv, the controller in charging unit 26
Charge command is exported, charging IGBT is made to be connected, charging capacitor C is carried out to charge to 1.6kv, charge closing switch S, while will drive
Dynamic electric machine control system 31 is set as operational ready state；
The capacitance and inductance value of major loop calculate according to the following formula：
Wherein：Supply frequency f=50Hz, supply voltage u=1.6kV, source current i=1.5kA, simultaneous formula (1) and
Formula (2), you can obtain main capacitance C=4222 μ F, reactance L=2402 μ H；
Step 5, when closing switch HK receives switching signal, call shutting-brake control subprogram, apparatus of the present invention according to
Whether given curve completes feed motion, and judge to close a floodgate and succeed, and when to reach closing position, closes a floodgate and fails and send out report
Alert signal, return to step four, when reaching closing position, combined floodgate terminates；Separating brake switch receives sub-gate signal at this time, calls and divides
Lock controls subprogram, realizes that apparatus of the present invention complete separating brake action according to given curve, and judge whether separating brake succeeds, successfully gives
Go out open position prompt, separating brake terminates, and executes step 6, does not reach open position also after separating brake, separating brake fails and sends out report
Alert signal, return to step four, as shown in figure 3, the concrete operations of this step are as follows：
When closing switch HK receives combined floodgate order, closing switch HK executes closing operation, and whole test loop is at this time
The virtual value of short-circuit condition, first wave of test loop electric current is 1.5kA, and after prefixed time interval, driving motor 12 connects
The separating brake instruction that driving motor control system 31 is sent out is received, driving motor 12 drives motor connection lever 13 and connecting rod 14 to rotate, into
And realize that insulated tension pole 15 drives cylinder 2 and moving contact 21 to move down, the gas between piston 18 and cylinder 2 is gradually pressed
Contracting generates hyperbar；When moving contact 21 and static contact 24 detach, electric arc, gas are generated between moving contact 21 and static contact 24
High pressure gas in cylinder 2 has certain air-blowing to act on electric arc by spout 22, with the continuation that separating brake acts, 21 He of moving contact
The distance between static contact 24 gradually increases, and electric arc is gradually elongated, and the effect of air-blowing at this time becomes more and more acutely, final electric arc
Extinguish in circuital current zero crossing, completes an arc extinguishing process；
Step 6 can measure the arc voltage u during experimental rig arcing by sensor 1 and sensor 2 29
Waveform, the waveform of the arc current i during arcing, sensor 1, sensor 2 29 can be measured by sensor 3 30
Data measured is transferred to oscillograph 27 with sensor 3 30, confirms the accurate rear preservation of data that oscillograph 27 acquires, behaviour
Make discharge switch and discharge treatment, off-test are carried out to main capacitance；
Step 7, to the waveform of 27 collected arc current of oscillograph and arc voltage by MATLAB softwares into line number
According to processing, concrete processing procedure is as follows：
Mayr dynamic arc models are：Being deformed can obtain：
Wherein：U- arc voltages, i- arc currents, g- electric arc conductances, t- times, θ-arc duration constant, N- electric arcs dissipate
Send out power, you can obtain corresponding arc duration constant θ and electric arc distributes power N, can judge the arc extinguishing of the gas accordingly
Performance.
The gas being filled in the main casing 8 and lateral shell 9 may be configured as N according to different pilot projects2、C4F7N or
CF3I environment-friendly type gases.
Claims (10)
1. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance, which is characterized in that including steelframe, cylinder and charging
Device, the steelframe top are provided with lower cover, and bottom end is provided with dynamic sealing seat, the dynamic sealing seat at the lower cover center
Be provided with dynamic sealing seat ring in groove, and lower cover lower surface be against at the top of dynamic sealing seat ring, offered on the lower cover into
Gas outlet, the lower cover top is welded with nut, and nut is located at lower cover through-hole surrounding, is bolted at the top of the lower cover
Main casing, main casing middle and upper part sidewall symmetry are welded with lateral shell, and the lateral shell end is provided with lateral shell
Cover board, the main casing top are bolted with disc insulator, and the steelframe bottom is installed with driving motor, the driving electricity
Machine exports shaft end and is rotatablely installed with motor connection lever big end, and the motor connection lever small end is rotatablely installed with connecting rod one end, the company
The bar other end is connect with insulated tension pole one end, and insulated tension pole sequentially passes through dynamic sealing seat ring and lower cover through-hole and extends to master
Housing cavity, the cylinder are located at main casing intracoelomic cavity, and the cylinder end is provided with pull rod holder, is opened up on the pull rod holder
There are the through-hole concentric with nut, the through-hole wall that sliding bearing is installed, the insulated tension pole other end is screwed onto pull rod
Holder center bottom, the cylinder inner wall are slidably fitted with piston, and the piston bottom end is installed with piston supporting rod, and living
Supporting rod is filled in through sliding bearing and is fixedly mounted with nut, and the cylinder inner wall piston tip is installed with moving contact support
Plate, the moving contact support plate top are bolted with moving contact, and the cylinder head is bolted with spout, the disc insulator bottom end
It is installed with static contact fixed seat, and is extended in disc insulator through-hole at the top of static contact fixed seat, the static contact is solid
Reservation bottom is installed with static contact, and static contact is located at main casing intracoelomic cavity, is installed at the top of the disc insulator
High-voltage conductive rod, and high-voltage conductive rod bottom extends in disc insulator through-hole and is fitted closely at the top of static contact fixed seat；
The charging unit output end is electrically connected with charge switch, after the charge switch output end is in parallel with charging capacitor respectively
It is electrically connected reactor and sensor three, the reactor is electrically connected closing switch, and the closing switch is electrically connected the equivalent electricity in circuit
Resistance, the circuit equivalent resistance are electrically connected high-voltage conductive rod, and the high-voltage conductive rod is electrically connected sensor one, the sensor one
It is electrically connected oscillograph, three output end of the sensor is electrically connected lower cover and oscillograph, the lower cover electrical connection sensing
Device two, two output end of the sensor are electrically connected oscillograph, and the driving motor is electrically connected with driving motor control system.
2. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that：
The driving motor is set as limited rotary angle permanent magnet brshless DC motor.
3. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that：
The main casing is the open hollow circuit cylinder cylinder of upper and lower ends, and the lateral shell one end is open, and the other end is closed
Hollow circuit cylinder cylinder.
4. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that：
The point-to-point speed of the insulated tension pole is 3.2m/s.
5. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that：
The length of the motor connection lever and connecting rod ratio is 1:2.
6. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that：
The main casing height is 480mm, a diameter of 325mm, and internal total gas capacity is 40L.
7. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that：
The cylinder bore diameter is set as 90mm, and the cylinder gas capacity is 0.9L.
8. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that：
The moving contact, static contact and spout use the standard component of 40.5kV/31.5kA self-blasting circuit breakers, the moving contact outer diameter
For 25mm, the static contact internal diameter is 25.2mm, and the two uses plug-in type docking mode, the moving contact mechanical property design
Parameter：Stroke is 96mm, is opened away from 60mm, excess of stroke 36mm.
9. a kind of method for the research of environment-friendly type gas arc extinction performance, it is characterised in that：It being used for ring using claim 1 is a kind of
The experimental rig of guarantor's type gas arc extinction performance research, includes the following steps：
Step 1 verifies experimental rig driving motor control system, and driving motor control system includes mainly capacitor
Charge-discharge circuit, inversion isolated drive circuit and moving contact velocity checking circuits make it meet the conjunction point behaviour needed for experiment process
It is required, driving motor control system flow chart is as shown in Figure 3；
Step 2, disc insulator, main casing and the lower cover junction of checkout facility device, main casing and lateral shell weld seam
The air-tightness at dynamic sealing between place, lateral shell and lateral housing cover junction and bottom end cover and insulated tension pole, leads to
Air inlet/outlet is crossed to being filled with gas in the main casing and lateral shell；
Step 3, adjusts the switching parameter in test loop, and experimental rig is initially "on" position, adjustment closing switch to separating brake
State；
Step 4 opens charge switch and charge to preset voltage value to main capacitance, while by driving motor control system
It is set as operational ready state；
Step 5, charge closing switch start process of measurement, and closing switch executes feed motion, and electric current occurs in test loop, passes through
After spending the preset time, experimental rig executes sub-switching operation；
Step 6 can measure the waveform of the arc voltage u during experimental rig arcing by sensor one and sensor two, lead to
The waveform for the arc current i that sensor three can measure during arcing is crossed, sensor one, sensor two and sensor three will measure
Data are transferred to oscillograph, confirm and are preserved after the data of oscillograph acquisition are accurate, operation discharge switch carries out main capacitance
Discharge treatment；
Step 7 is carried out by the oscillogram of test measurement arc current and arc voltage and by MATLAB softwares at data
Reason, you can obtain corresponding arc duration constant θ and electric arc distributes power N, can judge the arc extinction performance of the gas accordingly.
10. a kind of method for the research of environment-friendly type gas arc extinction performance according to claim 9, it is characterised in that：Institute
It states the gas being filled in main casing and lateral shell and N may be configured as according to different pilot projects2、C4F7N or CF3I environment-friendly type gas
Body.
Priority Applications (1)
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|---|---|---|---|
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| CN110108990A (en) * | 2019-05-10 | 2019-08-09 | 沈阳工业大学 | A kind of experimental rig and method for environmental-protective gas-insulating performance study |
| CN110308388A (en) * | 2019-06-26 | 2019-10-08 | 中国电力科学研究院有限公司 | It is a kind of for testing the device and test method of the electric property of GIS insulated pull rod |
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| CN111220641A (en) * | 2019-11-21 | 2020-06-02 | 河南平高电气股份有限公司 | Ablation resistance detection device, detection method and evaluation method for arc extinguishing nozzle |
| CN111506990A (en) * | 2020-04-03 | 2020-08-07 | 东南大学 | 1-dimensional arc model-based rapid screening method for environment-friendly arc-extinguishing gas |
| CN114264944A (en) * | 2021-12-02 | 2022-04-01 | 西安高压电器研究院有限责任公司 | Experimental device for be used for measuring electric arc form between circuit breaker fracture |
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| CN111220641A (en) * | 2019-11-21 | 2020-06-02 | 河南平高电气股份有限公司 | Ablation resistance detection device, detection method and evaluation method for arc extinguishing nozzle |
| CN111506990A (en) * | 2020-04-03 | 2020-08-07 | 东南大学 | 1-dimensional arc model-based rapid screening method for environment-friendly arc-extinguishing gas |
| CN114264944A (en) * | 2021-12-02 | 2022-04-01 | 西安高压电器研究院有限责任公司 | Experimental device for be used for measuring electric arc form between circuit breaker fracture |
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