CN1034812A - Measuring instrument for high-voltage switch parameter - Google Patents
Measuring instrument for high-voltage switch parameter Download PDFInfo
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- CN1034812A CN1034812A CN 88100414 CN88100414A CN1034812A CN 1034812 A CN1034812 A CN 1034812A CN 88100414 CN88100414 CN 88100414 CN 88100414 A CN88100414 A CN 88100414A CN 1034812 A CN1034812 A CN 1034812A
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- voltage switch
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- switch gear
- measuring instrument
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Abstract
Measuring instrument for high-voltage switch parameter of the present invention is made up of photoelectric conversion device, signal processing circuit, startup timing circuit and computer data processing system, be used to measure the instantaneous velocity of high-voltage switch gear, firm branch (closing) time, fracture be the same period, maximal rate, maximal rate time not, and the parameters such as curve movement of high-voltage switch gear moving contact motion overall process, this tester also can directly show and record test data and family curve when measuring.
Description
The present invention relates to a kind of measuring instrument for high-voltage switch parameter.
In general, the power supply of the manufacturer of high-voltage switch gear, the every production of generating department, installation or overhaul a high-voltage switch gear and all must carry out strictness test to its switch performances, parameter.
The general at present high-voltage switch gear speed measuring device that adopts is by a through hole that is arranged on a certain precalculated position in the switch movable contact actuating travel.Obtain photoelectric pulse signal.Utilizing hertz oscilltor to draw out a cephalomotor curve of high-voltage switch gear movable contact, is that the slide calliper rule of 0.02mm measure behind the relevant data through calculating the relevant performance parameter that could obtain high-voltage switch gear with precision again.This speed measuring device takes to decide luminous flux.The running fix scalar sum is adjusted the mode of luminous flux, for the measuring accuracy influence greatly.The oscillation frequency of frequency oscillator is constant (100 cycle per second).The resonance width of cloth can only be regulated some the limit very much in the little scope, this example is said, when measuring the opening velocity of DRSR-220 switch, because the opening velocity height, curve will be drawn very flatly, therefore be difficult to measure accurately the firm branch time, maximal rate is just divided, firm resultant velocity instantaneous velocity, the not same period of maximal rate time and fracture, exist several significant problems promptly on measuring: it can not ask the instantaneous velocity of measuring high-voltage switch gear, just divides (closing) time, the not same period of fracture, can not the long stroke of measuring switch, can not a tractor serves several purposes, can not survey speed-sensitive switch, instrument is a whole set of expensive, volume is big, and weight is big, and operating personnel are many, complicated.In addition, for the voltage height, cut off the fast high-voltage switch gear of the big branch of electric current (closing) lock and can not use.For example: SW
7-110KV switch just-off speed 10m/s, maximum opening velocity is 15m/s.France DRSR-220KV switch, just-off speed 18m/s, maximum opening velocity 19m/s.If still use hertz oscilltor to measure, be not satisfy the requirement that high-voltage switch gear tests the speed, and measure the instantaneous velocity of high-voltage switch gear.Just divided the not same period of (closing) time, fracture, maximal rate, time, just powerless.
The purpose of this invention is to provide a kind of instantaneous velocity of measuring high-voltage switch gear, just divide (closing) time, fracture is the same period not, maximal rate, the curve movement of maximal rate time and high-voltage switch gear moving contact motion overall process, the measuring instrument for high-voltage switch parameter of various parameters, this tester also can be when measuring, and directly show and note column data and family curve.
1. firm branch (closing) time of fracture.
2. the not same period of any two fractures.
3. the asynchronous size of fracture relatively.
4. contact athletic performance time.
5. firm branch (closing) speed (instantaneous velocity) of fracture.
6. maximum (closing) instantaneous velocity that just divided.
7. moving contact speed reaches the maximum time.
8. the speed displacement curve of switch movable contact branch (closing) full motion.
9. divide in (closing) process the dot matrix curve of moving contact position and corresponding time.
10. the position of arbitrary time in the moving contact motion process.
11. in the moving contact motion process, the time of arbitrary position.
12. the instantaneous velocity that arbitrary time is located in the moving contact motion process.
13. the speed of arbitrary position in the contact motion process.
The distance of being walked when 14. moving contact moves to firm branch (closing) point.
15. divide the total kilometres of (closing) point.
And the out of Memory of other relevant contacts.Even the instantaneous velocity V(s when obtaining optional position in the contact motion process) and corresponding time T (s) and any time moving contact displacement S(t) be to observe the small speed time to change a kind of necessary means of research switch mechanical property.
Measuring instrument for high-voltage switch parameter of the present invention is mainly by photoelectric conversion device, and signal processing circuit starts timing circuit and computer data processing system.
Fig. 1 Fig. 2 is two kinds of best circuit diagrams of implementing of the present invention.
Fig. 3 Fig. 4 is that the present invention looks saddle cloth and admires loess hills hoop pinworm oneself takes off the low car order pinworm flesh of Sui cave
1. the architectural feature of photoelectric switching circuit is: with 10+0.02 -0.05Mm is the equidistant holes grating scale of unit, has two infrared light emission pipe 1.2. to be in parallel in a side of grating scale, has two silicon light pipes 5.6 to be in parallel at the opposite side of grating scale. Grating scale is fixing at movable contact of high-voltage switch, moves with switch movable contact.
2. the architectural feature of signal processing circuit is: all connecting respectively two rc filter circuit 3.4. on the colelctor electrode of two silicon light pipes on the base stage of first order transistor 7.8 colelctor electrode pre-amplification circuits. First order transistor 7.8 is series connection colelctor electrode amplifying circuit. The transistorized base stage in the colelctor electrode of first order transistor 7.8 and the second level is in series and forms second level transistor 7.8.9.10 colelctor electrode pre-amplification circuit, first and second grades of transistor amplifier circuits are parallel circuit, increase pulse signal circuit from second level transistor collector 9.10 strings dual drive 11. for absorption, and then connect a NAND gate 12 and pulse signal indication 13 of series connection be signal output apparatus, and NAND gate 12 connect with photoelectrical coupler 14 and is output as the pulse signal high pressure to NAND gate 15 and isolates shaping circuit just to being connected in series in the counter 16 of microcomputer data handling system with non-15 output.
3. starting timing circuit is characterised in that: the output that the relay protector 20 of high-voltage switch gear is connected with photoelectrical coupler 17 in the startup timing circuit to NAND gate directly is connected with the timer 19 of microcomputer data handling system.
4. the architectural feature of computer data processing system is: utilize the counter timer in the microcomputer to carry out as counter and timer, formation according to its inside, moving contact to the monitored object high-voltage switch gear, timing sampling is carried out in the parameter of fracture, pulse, data acquisition processes the data that collect then. Fig. 3. Fig. 4 is the structured flowchart of this instrument.
1. photoelectric conversion device is the top that is fixed on the high-voltage switch gear fracture. Fig. 1 is photoelectric switching circuit figure, with one with 10+0.02 -0.05Mm be unit etc. the pitch-row grating scale, the moving contact of this chi and high-voltage switch gear is connected together, there are two infrared light emission pipe 1.2. and two silicon light pipe 5.6. to work as movable contact of high-voltage switch Sports band moving grid chi in this both sides and move a pitch-row, the light transmission grating scale impinges upon on the silicon light pipe, at this moment just there is a pulse to produce the entering signal treatment circuit: to go round and begin again, infrared light emission line 1.2 is connected in parallel in the circuit, silicon light pipe 5.6 also be connected in parallel in the circuit all respectively in the both sides of grating scale.
2. signal processing circuit Fig. 1. operation has very strong external electric field to disturb under forceful electric power, for fear of interference, it be connected between silicon light pipe 5.6. and the transistor collector prime discharge road 7.8 of filtering resistance-capacitance circuit 3.4. arranged in treatment circuit, and resistance-capacitance circuit is that the base stage from the collector transistor 7.8 of silicon light pipe is connected in series. In circuit, adopted the preposition amplification of secondary transistor 7.8.9.10. in order to strengthen pulse signal. 7.8. the transistorized base stage of transistorized colelctor electrode and 9.10. is in series. From the output of the colelctor electrode discharge signal of transistor 9.10., be input to dual drive 11 and the NAND gate 12, isolate shaping and send into Timer/Counter CTC16 by NAND gate 15 and carry out data message and process through sending into photoelectrical coupler 14 with the pulse signal of door 12 outputs. They all are that the mode of connecting connects, and the 13rd, the pulse signal indication.
3. start timing circuit Fig. 2: normally opened contact 20 and the photoelectrical coupler 17 of high-voltage switch gear relay are in series, entering photoelectrical coupler 17 when enabling signal is come by the normally opened contact of high-voltage switch gear relay carries out NAND gate 18 shapings are sent in this signal processing isolation again, this is to start in the timer in order to prevent that interfering signal from entering, signal through NAND gate 18 shapings is input among the devise a stratagem device CTC19, and they all are that the form of connecting connects.
4. microfacies data handling system Fig. 4, measuring instrument for high-voltage switch parameter is a kind of processing take TP801 A type microcomputer as main body microcomputer timing data, according to the principle of micro computer timing sampling, the information of (branch) resultant motion process of high-voltage switch gear or similar device is processed processing. When pulse signal is input to Timer/Counter CTC16.19, it is analyzed this signal, the a series of processing such as computing, be sent to then memory 21 and position the modified address pointer, send into again central processor CPU 22 and process processing, utilize at last operation board to send into the series of parameters output (printer) 24 such as output signal data and carry out parameter and print.＜microcomputer possesses printing, Presentation Function 〉. Mainly by software control.
Photoelectric conversion device is fixed at high-voltage switch gear port top, and grating scale and movable contact of high-voltage switch link together, and thereupon mobile, and grating scale is with 10Equidistant holes grating scale for unit, hole lattice of every movement, light source is interdicted once, finished like this conversion of light and electric impulse signal by infrared light emission pipe 1.2 and silicon light pipe 5.6, electric impulse signal is input to transistor 7.8. after 3.4. filtering carries out colelctor electrode and puts front amplification, the input and output indicator lamp 13 of electric impulse signal is entering of indication pulse, during the photoelectric pulse signal input, signal designation 13 is just shinny, otherwise do not work, then, the process dual drive increases the magnitude of current 11 of pulse signal, carries out high-low level indication output through NAND gate 12 pulse signals, be input at last photoelectrical coupler 14 and carry out the pulse signals isolation, get rid of the interference noise signal, process shaping, then be input to the data of carrying out paired pulses among the counter CTC16 by NAND gate and process. Fig. 1.
Start the relay protector normally opened contact (abbreviation relay) 20 of timing circuit high-voltage switch gear; be in series with the photoelectrical coupler 17 that starts timing circuit; when the relay operation bar of high-voltage switch gear when pressing down; moving contact in the high-voltage switch gear just begins to do to divide the motion of (closing) lock to be input in the start-up circuit photoelectrical coupler 17 of instrument in this simultaneously enabling signal pulse of the normally opened contact of high-voltage switch gear relay, carries out data in the device 19 when directly being sent to timing circuit total through NAND gate 18 again through isolation and processes. During this time, instrument internal picks up counting, and the moving contact of high-voltage switch gear and the timer of instrument move and timing simultaneously.
The time measurement method: the moving contact of high-voltage switch gear is that beginning to Vt by initial velocity Vo is end. Can be in the moment that has just finished, moving contact and the static contact of high-voltage switch gear are collided, can be at this moment because recoil effect moving contact is got back to the position of closing at last at leisure to the moving segment distance of travelling backwards again. The motion overall process of movable contact of high-voltage switch is a parabolic type shape. Its track is: when switch movable contact just moves (referring to initial velocity), a signal pulse is arranged, Fig. 2, this pulse signal carries out signal isolation shaping by photoelectrical coupler 17, be input among the timer CTC19, carry out the calculating of time, begin regularly to calculate the pulse number that passes through like this, calculate the total time of the overall process of movable contact of high-voltage switch motion, instantaneous etc.
To illustrate below:
With SW
6-220KV low-oil-content circuit-breaker is an example, measures making process:
At first the moving contact of switch is got to the indicating positions of branch, the light photoelectric conversion device of high-voltage switch gear parameter testing is fixed on the port top of high-voltage switch gear, but grating chi and moving contact are connected together and enter in the instrument by the photoelectric commutator wiring, each fracture line also inserts in the disconnected device pole socket of instrument simultaneously, after this connecting high-voltage switch gear relay and instrument startup timing circuit is in series, open the power switch of instrument after the verification wiring is errorless, the relay of behaviour's high-voltage switch gear carries out closing operation.Property operation this time can obtain:
Firm fashionable of every phase fracture.
The not same period of every phase fracture.
The firm resultant velocity (referring to instantaneous velocity) of every phase fracture.
The maximal rate of every phase fracture.
The maximal rate time of every phase fracture.
And time-displacement curve and the velocity of displacement curve of describing switch movable contact motion overall process.Deng 24 kinds of parameters, in addition, can recognize the motion conditions of switch from these two curves, the characteristic state of failure condition and reflection moving contact.
The high-voltage switch gear parameter testing, overcome the shortcoming of above-mentioned present existing instrument, solve and broken through average velocity and the limitation that present multiple high voltage switch tester device can only be measured the minizone stroke, solved the problems of measurement of unsolved for many years switch movable contact motion instantaneous velocity, therefore, it is adapted to the development of UHV (ultra-high voltage) switch, detect and Installation and Debugging, the reliability height, testing efficiency height, data precision height, volume is little, in light weight, simple to operate, intuitive display, Chinese character output, parameter is printed, switching process entire curve drafting etc., new instrument applied widely, by field experiment repeatedly, test, the result has reached domestic standard, has reached world level at measurement instantaneous velocity this respect.
In order to conform to various speed parameter definition, this instrument has improved multiple in the past testing tool and has utilized the method for asking the approximate instantaneous velocity of average velocity in the sub-district, each speed parameter is actual instantaneous value and standard value, also having the high numeral of testing efficiency shows clear directly perceived, differentiate performances such as automatic relative error the same period.
The time measurement error is not more than 0.00001%
Data noise is not more than 0.1%
The scope of application is as long as the motion of grating chi can reflect contact motion (no matter model of switch).Pitch-row chis such as (practical use when measuring vacuum switch) 1mm gratings no matter other length stroke, the speed height all uses 10
+ 0.02 -0.05Pitch-row chis (general) such as the grating of mm.
Degree of testing the speed wide ranges 0.001m/s-100m/s.
Because of outer this instrument general assembly (TW) is no more than 9kg, easy to carry, simple to operate, get final product on-the-spot test with a people, strong anti-interference performance still can operate as normal under 500,000 volts of high pressure.Shockproof properties is strong, is placed on the 500 kilometers hill paths of travelling on the truck and still can works on.Stream time 〉=8H.Temperature adaptation scope-45 ℃～40 ℃.
Claims (4)
1, measuring instrument for high-voltage switch parameter comprises photoelectric conversion device, the vast plaited straw in signal place is penalized stern ㄊ barium plaited straw virtue to pull out low F of ⒒ Sui cave and is rinsed great rainwater in puddles the badger tie ascarid father in the drooping plan of an ancient small-mouthed wine vessel tomb orangutan smoke tree tool that covers and dye Nie and weigh down arm spread こ strip and annotate arm spread こ and kowtow the capsule choke smoke tree crab ⒐ Yin .2 that wanders, opposite side is provided with light activated element 5,6.Signal processing circuit is provided with dual drive 11, photoelectrical coupler 14 Sheffer stroke gates 15 sum counters 16.Start timing circuit and be connected between the normally opened contact of high-voltage switch gear relay, computer data processing system is made up of timer 19 counters 16 central processing units 22, and it is by software control.
2, the measuring instrument for high-voltage switch parameter according to claim 1 is characterized in that, signal processing circuit 2. is connected in parallel in the circuit by infrared light emission pipe 1, and 5,6 two of photosensitive tubes of silicon electricity are connected in parallel in the circuit, and they are all respectively in the both sides of grating chi.The preposition amplification of secondary transistor 7.8.9.10..7.8. series connection, 9.10 series connection, 7.8. and 9.10 be connected in parallel between the base stage of the collector of each silicon light pipe and amplifier transistor 7.8. and have capacitance-resistance filter 3.4. circuit to be in series respectively, links to each other with photoelectrical coupler 14 through dual drive 11 and Sheffer stroke gate 12 at the output terminal of second level transistor amplifier circuit.At the output terminal of Sheffer stroke gate a pulse input and output indication luminotron 13 is arranged, if the pulse input is arranged, luminous indication 13 is shinny.Otherwise do not work.Photoelectric coupler output end inserts in the microcomputer data processing counter 16.
3, the measuring instrument for high-voltage switch parameter according to claim 1 is characterized in that, the grating chi in its photoelectric conversion device can be connected together with the moving contact of high-voltage switch gear, and its pitch-row is 10
The mm luminotron is the infrared light emission pipe.Light activated element is the quick triode of silicon electric light.
4, the startup timing circuit according to claim 1 measuring instrument for high-voltage switch parameter is characterized in that: the normally opened contact 20 of high-voltage switch gear relay protector links to each other with photoelectrical coupler 17 in starting timing circuit, is input in the timer 19 of computer data processing system through the output terminal 18 of Sheffer stroke gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88100414 CN1034812A (en) | 1988-02-03 | 1988-02-03 | Measuring instrument for high-voltage switch parameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88100414 CN1034812A (en) | 1988-02-03 | 1988-02-03 | Measuring instrument for high-voltage switch parameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1034812A true CN1034812A (en) | 1989-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88100414 Pending CN1034812A (en) | 1988-02-03 | 1988-02-03 | Measuring instrument for high-voltage switch parameter |
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| CN (1) | CN1034812A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566662B (en) * | 2009-05-27 | 2011-01-05 | 福州大学 | Electromagnetic appliance test system |
| CN102435942A (en) * | 2011-09-06 | 2012-05-02 | 武汉义天科技有限公司 | Electromagnetic induction system of high-tension switch fracture and test method thereof |
-
1988
- 1988-02-03 CN CN 88100414 patent/CN1034812A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566662B (en) * | 2009-05-27 | 2011-01-05 | 福州大学 | Electromagnetic appliance test system |
| CN102435942A (en) * | 2011-09-06 | 2012-05-02 | 武汉义天科技有限公司 | Electromagnetic induction system of high-tension switch fracture and test method thereof |
| CN102435942B (en) * | 2011-09-06 | 2014-06-25 | 武汉义天科技有限公司 | Electromagnetic induction system of high-tension switch fracture and test method thereof |
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