CN106876224A - The forecasting system and method for impact air pressure suffered by breaker of plastic casing arc extinguishing room housing - Google Patents
The forecasting system and method for impact air pressure suffered by breaker of plastic casing arc extinguishing room housing Download PDFInfo
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- CN106876224A CN106876224A CN201710042317.5A CN201710042317A CN106876224A CN 106876224 A CN106876224 A CN 106876224A CN 201710042317 A CN201710042317 A CN 201710042317A CN 106876224 A CN106876224 A CN 106876224A
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- 238000010891 electric arc Methods 0.000 claims abstract description 12
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
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- 238000004458 analytical method Methods 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 8
- 238000012417 linear regression Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
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- 230000000694 effects Effects 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 6
- 239000000523 sample Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002679 ablation Methods 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000000153 supplemental effect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/02—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
- G01L9/06—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of piezo-resistive devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/08—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of piezoelectric devices, i.e. electric circuits therefor
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- Arc-Extinguishing Devices That Are Switches (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention discloses the forecasting system and method for impact air pressure suffered by a kind of breaker of plastic casing arc extinguishing room housing, including large-current electric source circuit, arc extinguishing room housing test product SP, data collecting system and high-speed camera, the large-current electric source circuit uses single-frequency LC oscillation circuits to provide test power for the arc extinguishing room housing test product SP, the data collecting system is connected with the large-current electric source circuit and arc extinguishing room housing test product SP, synchronous acquisition arc voltage and current information, the data collecting system is also associated with pressure sensor, air pressure for detecting arc-chutes, the high-speed camera is connected with computer, impact air pressure prediction is carried out by shooting electric arc dynamic image.The inventive method is succinctly feasible, takes intuitively predictor formula to be predicted, and its air pressure peak value is obtained using the means of experiment without to all new product arc-chutes models, greatlys save cost and improves efficiency.
Description
【Technical field】
The invention belongs to breaker technical field, and in particular to impact air pressure suffered by a kind of breaker of plastic casing arc extinguishing room housing
Forecasting system and method.
【Background technology】
During low-voltage circuit breaker cut-offs high current, arc extinguishing room housing is held under the hot air impingement effect of very atmospheric pressure
Easily stress is excessive causes housing distortion to be even broken, and triggers security incident.At present, work on hand is built mainly for air arc
MHD models are found, MHD models are complicated and are difficult in engineering practice；There is the specific method for barometric surveying, but without tool
Body acupuncture to arc-plasma to shell shock effect, when arc quenching chamber structure changes or the short circuit current housing that changes will be subject to
Different impact air pressures.
M.Tsukima of Japan et al. demonstrates the Lorentz force of air-blowing effect and electromagnetism to electric arc by experiment and emulation
Arc motion can be equally effectively driven, and proposes the concept of air-blowing (auto-puffer) first.McBride is for micro-
Type breaker model, experimental verification contact in low speed opening procedure air-blowing to improving the positive of miniature circuit breaker break performance
Effect.
At home, Chen Degui, Liu Hongwu of Xi'an Communications University et al. take the lead in cut-offfing electricity for air-sweeping type breaker of plastic casing
The different affecting factors (gas exhausted material, upper and lower air damping and grid structure) of arc motion launch research during road, in experiment
In order to the motion view more accurately to electric arc is observed, a set of two dimensional optical fiber observation system of independent research.Research shows,
Arc-chutes bottom outlet is closed as far as possible, is conducive to improving open circuit with nylon gas exhausted material using short grid structure and POM
The break performance of device.The Mathematical Modeling of One dimensional unsteady compressible flows is established, by calculating arc-chutes flow parameter (pressure
By force, speed) along the universal law of arc motion directional spreding obtain electric arc generation compressional wave and shock propagation to blind end with go out
Gas port end produces different reflections, and pressure gradient is formed in arc-chutes, thereby produces direct gas of the high velocity air to electric arc
The effect of blowing, realizes and theoretically explain Crack cause of the air-flow to arc voltage.
It is pointed out that low-voltage circuit breaker is when high current is cut-off, arc motion process is complicated, whole gas in arc-chutes
Flow field pressure gradient is changeable, former work change not specific to arc extinguishing room housing shock effect, when arc quenching chamber structure or
Person's short circuit current changes housing will be by different impact air pressures.
【The content of the invention】
The technical problems to be solved by the invention are for above-mentioned deficiency of the prior art, there is provided a kind of plastic housing open circuit
The forecasting system and method for impact air pressure suffered by device arc extinguishing room housing, on the basis of experiment and data analysis, for different knots
Structure arc-chutes, different short circuit current sizes, predict arc-chutes air pressure.
The present invention uses following technical scheme：
The forecasting system of impact air pressure suffered by breaker of plastic casing arc extinguishing room housing, including large-current electric source circuit, arc-chutes
Housing test product SP, data collecting system and high-speed camera, it is institute that the large-current electric source circuit uses single-frequency LC oscillation circuits
State arc extinguishing room housing test product SP and test power, the data collecting system and the large-current electric source circuit and arc-chutes are provided
Housing test product SP connections, synchronous acquisition arc voltage and current information, the data collecting system are also associated with pressure sensor,
Air pressure for detecting arc-chutes, the high-speed camera is connected with computer, is impacted by shooting electric arc dynamic image
Air pressure is predicted.
Further, the pressure sensor includes piezoresistive pressure transmitter and piezoelectric pressure indicator.
Further, the data collecting system is measured using instantaneous state recorder.
Further, inductance L, the capacitance group C and the arc extinguishing room housing test product for being set in the large-current electric source circuit
SP constitutes a single-frequency oscillating discharge loop, and different grades of experiment electricity is obtained by the charging voltage for changing the capacitance group C
Stream.
Further, the ratio of the capacitor bank C charging voltages and discharge current the first half-wave virtual value is 50:1V/
kA。
The Forecasting Methodology of impact air pressure, comprises the following steps suffered by a kind of breaker of plastic casing arc extinguishing room housing：
S1, arc-chutes model structure and laboratory model construction are contrasted；
S2, selection and the close arc-chutes of experimental model are used as benchmark model, while determining the theoretical ablation of benchmark model
The rate multiple K and arc power COEFFICIENT K p for being converted into the rising of arc-chutes air pressure；
S3, its arc power is judged according to service condition, the air pressure according to arc-chutes is adjusted with K, Kp with arc power relation
The whole theoretical ablating rate multiple K and arc power COEFFICIENT K p for being converted into the rising of arc-chutes air pressure；
S4, determine that atmospheric pressure value, with K, Kp and the functional relation of arc power, draws prediction air pressure by linear regression analysis
Peak value；
S5, when arc power is basically unchanged, and arc quenching chamber structure is changed, air pressure according to arc-chutes and K, Kp and arc extinguishing
The relation of cell structure adjusts the theoretical ablating rate multiple K and is converted into the arc power COEFFICIENT K p of arc-chutes air pressure rising；
S6, determined by linear regression analysis atmospheric pressure value with arc-chutes air pressure and K, Kp and arc quenching chamber structure function close
System, draws the peak value of prediction air pressure.
Further, in step S2, the arc-chutes include the first arc-chutes and the second arc-chutes, first arc-chutes
The arc power peak value of benchmark model structure is 1.6MW；The arc power peak value of the second arc-chutes benchmark model structure is
2.16MW。
Further, in step S4, atmospheric pressure value is with air pressure and K, Kp of first arc-chutes and the function of arc power
Relation is：
P=﹣ 9.7637+0.0886K+30.565802Kp+0.7265 × Power；
The functional relation of second arc-chutes is：
P=175.0852-238.4033 × K-52.9785 × Kp+20.2258×Power
Wherein, P is air pressure, and K is theoretical ablating rate multiple, and Kp is the arc power system for being converted into the rising of arc-chutes air pressure
Number, Power is arc power, unit for megawatt.
Further, in step S6, atmospheric pressure value with first arc-chutes air pressure and K, Kp and arc quenching chamber structure
Relation is：
P=﹣ 0.0430+1.0434 × K+2.6794 × Kp；
Atmospheric pressure value is with the relation of K, Kp and arc quenching chamber structure with the air pressure of second arc-chutes：
P=﹣ 3.2356+4.8254 × K-1.8727 × Kp
Wherein, P is air pressure, and K is theoretical ablating rate multiple, and Kp is the arc power system for being converted into the rising of arc-chutes air pressure
Number.
Further, by changing material, shape and the quantity of grid, the area and shape of bilateral gas outlet, copper bar set
Put, gas exhausted material and arc power adjust the theoretical ablating rate multiple K and be converted into the electric arc work(of arc-chutes air pressure rising
Rate coefficient Kp.
Compared with prior art, the present invention at least has the advantages that：
The present invention provides a kind of forecasting system of impact air pressure suffered by breaker of plastic casing arc extinguishing room housing, by large-current electric
Source circuit is powered to test product, and the arc voltage current information and arc-chutes of arc extinguishing room housing are gathered using data collecting system
Air pressure, by high-speed camera shoot electric arc dynamic image carry out impact air pressure prediction, according to experiment and data analysis base
On plinth, for different structure arc-chutes, different short circuit current sizes, arc-chutes air pressure is predicted, for optimization arc quenching chamber structure, carried
Housing mechanical strength high has important theory value and realistic meaning.
Further, pressure is measured as arc-chutes from Kisler211B5 piezoelectric pressure indicators：Small volume is applicable
The breaker of plastic casing arc-chutes size in experiment；High temperature resistant and coordinate heat insulation cap using being adapted to arc stage arc extinguishing indoor temperature
Hot environment more than 10kK；Response frequency higher accommodates certainty of measurement, can more objectively react in cut-offfing arc process
Arc-chutes air pressure change process；The range of 6.90bar measured journey in the experiment is adapted to, compared to the sensing of other wide ranges
Device can make measurement result more accurate.
Further, from the data acquisition plan for being exclusively used in low-voltage electrical apparatus experiment：Sample frequency higher can be by this
Experiment sample frequency is set to 800kHz, and the fluctuation that the frequency with respect to alternating current 50Hz can accurately collect data ensures output
Result will not distortion；The zero trigger mode used in this experiment can accurately collect the preliminary examination moment that electric arc is lighted, from
And obtain accurate experimental waveform.
Further, inductance L, capacitance group C constitute a single-frequency oscillating discharge loop with the arc extinguishing room housing test product SP.
Two switches of S1, S2 control charge circuit and major loop respectively, and control charging and circuit major loop may insure high-power respectively
The security of experiment；And different grades of experiment electric current is obtained by changing capacitor bank charging voltage, it is to change in experimentation
Become arc power and convenient and reliable method is provided.
The present invention also provides a kind of Forecasting Methodology of impact air pressure suffered by breaker of plastic casing arc extinguishing room housing, by by arc extinguishing
Room model structure is contrasted with laboratory model construction, is analyzed theoretical ablating rate multiple K and is converted into the rising of arc-chutes air pressure
Arc power COEFFICIENT K p value, then by specific value bring into corresponding air pressure predictor formula draw prediction air pressure peak value,
The method being combined using experiment and emulation, the method for obtaining air pressure prediction is true and reliable.
The inventive method is succinctly feasible, takes intuitively predictor formula to be predicted, without to all new product arc-chutes
Model obtains its air pressure peak value using the means of experiment, greatlys save cost and improves efficiency.
Below by drawings and Examples, technical scheme is described in further detail.
【Brief description of the drawings】
Fig. 1 is the system schematic of the inventive method；
Fig. 2 is air pressure Forecasting Methodology flow chart of the present invention；
Fig. 3 calculates air pressure with experiment air pressure contrast schematic diagram for the present invention.
【Specific embodiment】
Refer to shown in Fig. 1, the forecasting system of impact air pressure suffered by breaker of plastic casing arc extinguishing room housing of the present invention includes big
Current supplying circuit, arc extinguishing room housing test product SP, data collecting system and high-speed camera, the large-current electric source circuit are used
Single-frequency LC oscillation circuits provide test power, the data collecting system and the big electricity for the arc extinguishing room housing test product SP
Stream power circuit and arc extinguishing room housing test product SP connections, synchronous acquisition arc voltage and current information, the data collecting system
Pressure sensor is also associated with, the air pressure for detecting arc-chutes, the high-speed camera is connected with computer, by shooting electricity
Arc dynamic image carries out impact air pressure prediction.
Using single-frequency LC oscillation circuits as high-current supply, power frequency is 50Hz, using ATiS BE12 data for experiment
Acquisition system synchronous acquisition arc current, arc voltage and the voltage signal come by pressure conversion.Arc current passes through Roche
Coil is measured, and arc voltage is measured by high-voltage probe, and arc-chutes air pressure passes through two kinds of pressure of MPM 480 or Kisler 211B5
Sensor is measured, and electric arc dynamic image is shot by high-speed camera in experiment.
Oscillation circuit：Main closing switch S2 disconnects before experiment, closure charge circuit switch S1, and regulation pressure regulator T is by whole
Stream silicon stack charges to capacitor bank C, and pressure regulator T back to zeros disconnect charge circuit after charging to required experimental voltage, and Preparatory work of experiment is just
Thread.Main closing switch S2 is connected, by capacitor bank C, inductance L, test product SP constitute a typical single-frequency oscillating discharge loop.Can
Different grades of experiment electric current, capacitor bank charging voltage and discharge current are obtained with by changing capacitor bank charging voltage
The ratio of one half-wave virtual value is 50:1(V/kA).The intrinsic parameter of capacitor bank C and inductance L determines the frequency of oscillation in loop
It is 50Hz.
ATiS BE12 data collecting systems：ATis test measurements company is used for the data acquisition plan of low-voltage electrical apparatus experiment,
12 passages, highest sample frequency is 3MHz, using the triggering mode of current over-zero, synchronous acquisition arc voltage, arc current with
And by pressure conversion come voltage signal, herein involved by experiment sample frequency be set to 800kHz.
MPM 480 and Kisler 211B5 pressure sensors：MPM 480 be piezoresistive pressure transmitter, range 10bar,
Precision is about 0.5V/bar, and response frequency 1kHz, power supply is provided by 24V D.C. regulated power supplies.Kisler 211B5 are piezoelectric type
Pressure sensor, range 6.90bar, precision 0.808V/bar, response frequency 500kHz, power supply is by 4 passage 5134B Signal Regulations
Instrument is provided.The operation principle of MPM 480 is, using the piezoresistive effect of semiconductor silicon material, to realize the conversion of pressure and electric signal,
The electric signal of the electric bridge output on sensitive chip has good linear ratio relation with actuating pressure.And Kisler 211B5 are adopted
With quartz as sensing element, air pressure is measured using the linear relationship between its charge inducing amount Q and pressure.
Refer to shown in Fig. 2, the Forecasting Methodology of impact air pressure suffered by a kind of breaker of plastic casing arc extinguishing room housing of the invention,
Experiment basis do simulation calculation its gas pressure curve to following each models, and the rule of various model air pressure peak values are summarized according to simulation parameter
Restrain and make air pressure predictor formula.
Comprise the following steps that：
S1, the structure according to new product arc-chutes model are contrasted with experimental model of the present invention；
S2, selection and the first close arc-chutes of experimental model or the second arc-chutes are used as benchmark model, while choosing
The value of the K and Kp of benchmark model；
S3, its arc power is judged according to service condition, according to table 2 and the adjustment of table 4 K, Kp；
S4, with reference to formula (1) or formula (3) prediction air pressure；
S5, when arc power is basically unchanged, and arc quenching chamber structure is changed, according to table 3 and table 5 adjustment K, Kp；
S6, with reference to formula (2) or formula (4) prediction air pressure.
The parameter declaration of K and Kp：K is meant that the theoretical ablating rate of the multiple of theoretical ablating rate, i.e., K times, theoretical ablation
Rate is 6e-9ug/J；Kp is meant that the arc power coefficient for being converted into the rising of arc-chutes air pressure.Value for influence Kp and K
Angle and other more or less obstruction electric arc and heat that volume, the area of gas outlet, grid inside factor and arc-chutes are set
The factor of air movement is relevant.Influence of the arc quenching chamber structure change to K and Kp can be obtained according to experiment and emulation, according to new mould
Formula is adjusted accordingly to K, Kp.Obtain the parameter being consistent with new model.Air pressure predictor formula is substituted into again.
First arc-chutes benchmark model structure is that arc power peak value is 1.6MW；Grid material is iron；The gas outlet of right side 0；
Grid is shaped as 1；Gas outlet is 4 big mouths；Copper bar is without bending；Gas exhausted material is PA66.
Second arc-chutes benchmark model structure is that arc power peak value is 2.16MW；Grid number is 5；Outlet open area
It is 14mm × 2mm × 4.
Experimental model collects as shown in table 1：
First arc-chutes different arc power drags Simulation Control supplemental characteristic, the air pressure of the first arc-chutes with
The relation of K, Kp and arc power is as shown in table 2：
The air pressure of the arc-chutes of table 2 first and the relation of K, Kp and arc power
By linear regression analysis：Atmospheric pressure value is worth to K, Kp and electricity by reference to K, Kp and arc power of each group
The functional relation of arc power determines that air pressure P is specially：
P=﹣ 9.7637+0.0886K+30.565802Kp+0.7265 × Power (1)
When arc power remains unchanged substantially, the influence of the structure for the air pressure in arc-chutes of simple arc-chutes, first
The air pressure and K, Kp of arc-chutes and the relation of arc quenching chamber structure are as shown in table 3：
The air pressure of the arc-chutes of table 3 first and the relation of K, Kp and arc quenching chamber structure
By linear regression analysis：Air pressure of the atmospheric pressure value with the first arc-chutes is worth to by reference to the K and Kp of each group
With K, the relation of Kp and arc quenching chamber structure：
P=﹣ 0.0430+1.0434 × K+2.6794 × Kp (2)
Second arc-chutes are as shown in table 4 in the Simulation Control supplemental characteristic of different arc power drags：
The air pressure of the arc-chutes of table 4 second and the relation of K, Kp and arc power
By linear regression analysis：Atmospheric pressure value is worth to K, Kp and electricity by reference to K, Kp and arc power of each group
The functional relation of arc power：
P=175.0852-238.4033 × K-52.9785 × Kp+20.2258×Power (3)
When arc power remains unchanged substantially, the influence such as table 5 of the structure for the air pressure in arc-chutes of simple arc-chutes
It is shown：
The tables of data of the K and Kp of the arc-chutes of table 5 second
By linear regression analysis：Air pressure of the atmospheric pressure value with the first arc-chutes is worth to by reference to the K and Kp of each group
With K, the relation of Kp and arc quenching chamber structure：
P=﹣ 3.2356+4.8254 × K-1.8727 × Kp (4)
Predict that the method for air pressure is referred to shown in Fig. 2, to new model and experimental model contrast in the present invention, according to new model
Structure carries out judging that selection suitable K, Kp bring air pressure predictor formula into, so as to draw the peak value of prediction air pressure.
Refer to shown in Fig. 3, when showing that K=1, Kp=0.29 bring formula (2) into and can calculate air pressure P ≈ with Structure Comparison
1.714bar.It can be seen that the present invention can obtain accurate air pressure peak value according to air pressure predictor formula, and it is close with experimental result, can
As the foundation of engineering practice.
The present invention predicts arc-chutes air pressure, the air pressure pair that research arc-plasma is produced according to emulation and laboratory facilities
The percussion of arc extinguishing room housing, for optimization arc quenching chamber structure, improve housing mechanical strength have important theory value and
Realistic meaning.
Above content is only explanation technological thought of the invention, it is impossible to limit protection scope of the present invention with this, every to press
According to technological thought proposed by the present invention, any change done on the basis of technical scheme each falls within claims of the present invention
Protection domain within.
Claims (10)
1. the forecasting system of impact air pressure suffered by breaker of plastic casing arc extinguishing room housing, it is characterised in that：Including high-current supply electricity
Road, arc extinguishing room housing test product SP, data collecting system and high-speed camera, the large-current electric source circuit are vibrated using single-frequency LC
Loop provides test power, the data collecting system and the large-current electric source circuit for the arc extinguishing room housing test product SP
With arc extinguishing room housing test product SP connections, synchronous acquisition arc voltage and current information, the data collecting system is also associated with pressure
Force snesor, the air pressure for detecting arc-chutes, the high-speed camera is connected with computer, by shooting electric arc dynamic image
Carry out impact air pressure prediction.
2. the forecasting system of impact air pressure suffered by a kind of breaker of plastic casing arc extinguishing room housing according to claim 1, it is special
Levy and be：The pressure sensor includes piezoresistive pressure transmitter and piezoelectric pressure indicator.
3. the forecasting system of impact air pressure suffered by a kind of breaker of plastic casing arc extinguishing room housing according to claim 1, it is special
Levy and be, the data collecting system is measured using instantaneous state recorder.
4. the forecasting system of impact air pressure suffered by a kind of breaker of plastic casing arc extinguishing room housing according to claim 1, it is special
Levy and be：Inductance L, the capacitance group C set in the large-current electric source circuit and the arc extinguishing room housing test product SP constitute one
Single-frequency oscillating discharge loop, different grades of experiment electric current is obtained by the charging voltage for changing the capacitance group C.
5. the forecasting system of impact air pressure suffered by a kind of breaker of plastic casing arc extinguishing room housing according to claim 4, it is special
Levy and be：The ratio of the capacitor bank C charging voltages and discharge current the first half-wave virtual value is 50:1V/kA.
6. the Forecasting Methodology of impact air pressure suffered by a kind of breaker of plastic casing arc extinguishing room housing, it is characterised in that comprise the following steps：
S1, arc-chutes model structure and laboratory model construction are contrasted；
S2, selection and the close arc-chutes of experimental model are used as benchmark model, while determining the theoretical ablating rate times of benchmark model
The number K and arc power COEFFICIENT K p for being converted into the rising of arc-chutes air pressure；
S3, its arc power is judged according to service condition, the air pressure according to arc-chutes and K, Kp and arc power relation adjustment institute
State theoretical ablating rate multiple K and be converted into the arc power COEFFICIENT K p of arc-chutes air pressure rising；
S4, atmospheric pressure value is determined by linear regression analysis with K, Kp and the functional relation of arc power, draw the peak of prediction air pressure
Value；
S5, when arc power is basically unchanged, and arc quenching chamber structure is changed, air pressure according to arc-chutes and K, Kp and arc-chutes knot
The relation of structure adjusts the theoretical ablating rate multiple K and is converted into the arc power COEFFICIENT K p of arc-chutes air pressure rising；
S6, air pressure and K, Kp and the functional relation of arc quenching chamber structure of the atmospheric pressure value with arc-chutes are determined by linear regression analysis,
Draw the peak value of prediction air pressure.
7. the Forecasting Methodology of impact air pressure suffered by a kind of breaker of plastic casing arc extinguishing room housing according to claim 6, it is special
Levy and be：In step S2, the arc-chutes include the first arc-chutes and the second arc-chutes, the first arc-chutes benchmark model knot
The arc power peak value of structure is 1.6MW；The arc power peak value of the second arc-chutes benchmark model structure is 2.16MW.
8. the Forecasting Methodology of impact air pressure suffered by a kind of breaker of plastic casing arc extinguishing room housing according to claim 7, it is special
Levy and be：In step S4, atmospheric pressure value is with the functional relation of K, Kp and arc power with the air pressure of first arc-chutes：
P=﹣ 9.7637+0.0886K+30.565802Kp+0.7265 × Power；
The functional relation of second arc-chutes is：
P=175.0852-238.4033 × K-52.9785 × Kp+20.2258×Power
Wherein, P is air pressure, and K is theoretical ablating rate multiple, and Kp is the arc power coefficient for being converted into the rising of arc-chutes air pressure,
Power is arc power, unit for megawatt.
9. the Forecasting Methodology of impact air pressure suffered by a kind of breaker of plastic casing arc extinguishing room housing according to claim 7, it is special
Levy and be：In step S6, atmospheric pressure value is with the relation of K, Kp and arc quenching chamber structure with the air pressure of first arc-chutes：
P=﹣ 0.0430+1.0434 × K+2.6794 × Kp；
Atmospheric pressure value is with the relation of K, Kp and arc quenching chamber structure with the air pressure of second arc-chutes：
P=﹣ 3.2356+4.8254 × K-1.8727 × Kp
Wherein, P is air pressure, and K is theoretical ablating rate multiple, and Kp is the arc power coefficient for being converted into the rising of arc-chutes air pressure.
10. the Forecasting Methodology of impact air pressure suffered by a kind of breaker of plastic casing arc extinguishing room housing according to claim 6, it is special
Levy and be：By changing material, shape and the quantity of grid, the area and shape of bilateral gas outlet, copper bar setting, gas exhausted material
And arc power adjusts the theoretical ablating rate multiple K and is converted into the arc power COEFFICIENT K p of arc-chutes air pressure rising.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108508336A (en) * | 2018-05-16 | 2018-09-07 | 深圳供电局有限公司 | A kind of many reference amounts detecting system and its method of gas arcing characteristic and arc extinction performance |
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| CN109212966A (en) * | 2018-08-14 | 2019-01-15 | 西安交通大学 | A kind of mechanical equipment method for predicting residual useful life of multi-state dynamic benchmark |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5550530A (en) * | 1993-10-27 | 1996-08-27 | Hamm; Valery | Device for supplying power to and monitoring an electric fence |
| CN202712001U (en) * | 2012-05-14 | 2013-01-30 | 平高集团有限公司 | Switching arc generating and testing device |
| CN103884646A (en) * | 2014-03-04 | 2014-06-25 | 中国空间技术研究院 | Optical fiber sensing-based measurement system for concentration of electric arc ablation metal vapor of nozzle |
| CN104698332A (en) * | 2015-03-11 | 2015-06-10 | 西安交通大学 | Synchronous measuring device and method of arc and contact moving process based on laser imaging |
| CN106290446A (en) * | 2015-05-29 | 2017-01-04 | 国网智能电网研究院 | A kind of controlled direct-current arc generating means based on constant-current source |
-
2017
- 2017-01-20 CN CN201710042317.5A patent/CN106876224B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5550530A (en) * | 1993-10-27 | 1996-08-27 | Hamm; Valery | Device for supplying power to and monitoring an electric fence |
| CN202712001U (en) * | 2012-05-14 | 2013-01-30 | 平高集团有限公司 | Switching arc generating and testing device |
| CN103884646A (en) * | 2014-03-04 | 2014-06-25 | 中国空间技术研究院 | Optical fiber sensing-based measurement system for concentration of electric arc ablation metal vapor of nozzle |
| CN104698332A (en) * | 2015-03-11 | 2015-06-10 | 西安交通大学 | Synchronous measuring device and method of arc and contact moving process based on laser imaging |
| CN106290446A (en) * | 2015-05-29 | 2017-01-04 | 国网智能电网研究院 | A kind of controlled direct-current arc generating means based on constant-current source |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108508336A (en) * | 2018-05-16 | 2018-09-07 | 深圳供电局有限公司 | A kind of many reference amounts detecting system and its method of gas arcing characteristic and arc extinction performance |
| CN109101976A (en) * | 2018-07-10 | 2018-12-28 | 温州大学 | A kind of detection method of arc extinguishing grid pieces surface defect |
| CN109101976B (en) * | 2018-07-10 | 2021-11-30 | 温州大学 | Method for detecting surface defects of arc-extinguishing grid plate |
| CN109212966A (en) * | 2018-08-14 | 2019-01-15 | 西安交通大学 | A kind of mechanical equipment method for predicting residual useful life of multi-state dynamic benchmark |
| CN111207874A (en) * | 2020-01-13 | 2020-05-29 | 平高集团有限公司 | Pressure guide pipe testing device and method for circuit breaker |
| CN111398748A (en) * | 2020-03-12 | 2020-07-10 | 山西耀源电力工程有限公司 | Impulse arc image edge detection method and device |
| CN112180145A (en) * | 2020-09-29 | 2021-01-05 | 广东电网有限责任公司佛山供电局 | Post-arc field emission current measurement compensation system for arc extinguish chamber |
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