CN102426954A - Nanosecond continuous pulse ageing device and method of vacuum interrupter - Google Patents
Nanosecond continuous pulse ageing device and method of vacuum interrupter Download PDFInfo
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- CN102426954A CN102426954A CN2011103661318A CN201110366131A CN102426954A CN 102426954 A CN102426954 A CN 102426954A CN 2011103661318 A CN2011103661318 A CN 2011103661318A CN 201110366131 A CN201110366131 A CN 201110366131A CN 102426954 A CN102426954 A CN 102426954A
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Abstract
The invention relates to a nanosecond continuous pulse ageing device and method of a vacuum interrupter. The nanosecond continuous pulse ageing device comprises a control system, a direct-current power supply, an energy storage unit, a forming network, a triggering unit and a control switch part, wherein the control system is connected to the direct-current power supply and the triggering unit; the output end of the direct-current power supply is connected with the energy storage unit and the triggering unit is connected with the control switch; the energy storage unit is connected with the forming network and the forming network is used for outputting a pulse voltage to the vacuum interrupter through a current limiting unit; the control unit is connected with the energy storage unit and the lower part of the vacuum interrupter is provided with an adjusting device. According to the method provided by the invention, by adjusting the energy of one time of the discharging process and controlling discharging times in the unit time, the ageing degree and the ageing tendency are controlled and the ageing uniformity of the vacuum interrupter is improved. In the invention, a nanosecond-grade continuous pulse source is taken as an ageing power supply of the vacuum interrupter. The best ageing effect of the vacuum interrupter can be achieved by controlling the discharging energy of single pulse, the repetition frequency and the action time of the continuous pulse.
Description
Technical field
The invention belongs to the ageing technical field of vacuum interrupter, be specifically related to a kind of be used for the vacuum interrupter ageing with nanosecond the continuous impulse source be the ageing device of core and the ageing method that is carrier with this novel ageing device.
Background technology
At present, traditional ageing technology of vacuum interrupter mainly contains two kinds of electric current ageing and spark ageings.The main effect of electric current ageing is to utilize the electrical wear effect of electric arc, removes insulation weakness such as the gas that is attached to electrode surface, oxide, microprotrusion, it to big electric current disjunction with suppress to puncture behind the arc useful.Spark ageing technology is meant under quiescent conditions and applies high voltage to vacuum interrupter, causes to reach strong sparkover between contact and the radome between the vacuum interrupter inside contact.Through the effect of sparkover, remove the high β launch point on contact and bucking electrode surface.
Be different from traditional ageing method; (J.ballat such as the Ballat of Darmstadt polytechnical university in 1993; D.konig.Spark Conditioning Procedures for Vacuum Interrupters in Circuit Breakers [J] .IEEE Transactions on Electrical Insulation Vol.28, No.4, pp.621-627; 1993) circuit parameter of high frequency ageing power supply is adjusted; After optimizing the current amplitude and frequency of ageing, drawn under the high-frequency current effect of certain frequency and amplitude, the dispersiveness of the withstand voltage level of vacuum interrupter can reduce and be stabilized in several kilovolts from tens kilovolts.The impartial people of Yang Lan mentions a kind of high frequency ageing device of vacuum switch in the patent (patent No. application number is 98112973.0) of application in 1998; Utilize the discharge of LC vibration carrying out high-frequency current; Research shows that this device can improve discharging current and the discharge time in the unit interval greatly, improves the ageing efficient of vacuum switch.People (Harald Fink such as the Fink of ABB AB; Dietmar Gentsch; Et al.Conditioning of Series Vacuum Interrupter (VIs) for Medium Voltage by applying High-Frequency (HF) Current to Increase the Dielectric Strength of Vis [J] .IEEE Trans.On Plasma Science; Vol.35; No.4.pp.873-878,2007.) a kind of high-frequency current ageing method is proposed, it is 7.2kHz that this method adopts frequency; Current peak 10kA, the experimental provision of impulse discharge duration for the number microsecond carry out ageing to vacuum interrupter, and research has shown adopts high frequency ageing scheme can make contact surface that favourable transformation takes place on submicron-scale under the corrosion of discharge energy.
No matter be traditional ageing or utilize high-frequency current that vacuum interrupter is carried out the method for ageing, all exist discharge energy to be difficult to control, the unit interval punctures number of times can't accurately be set, and ageing degree and trend such as can't accurately control at deficiency.
To above situation, the present invention proposes the novel evacuated arc control device ageing method with the alternative traditional ageing power supply of nanosecond continuous impulse voltage source.This method is passed through the energy of adjustment impulse discharge process, and accurately controls the discharge time in the unit interval, realizes the favourable control to ageing degree and ageing trend, and greatly improves the ageing uniformity of vacuum interrupter.Widely apply in the vacuum technology of cut-offfing, and gradually under high voltage and big capacity Development Trend, this ageing method has important use and is worth.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of nanosecond continuous impulse voltage ageing device and method thereof of vacuum interrupter is provided, these apparatus and method adopt the ageing power supply of nanosecond continuous impulse source as vacuum interrupter.Through the repetition rate and the action time of control pulse discharge energy, continuous impulse, to reach the best ageing effect of vacuum interrupter.
The objective of the invention is to solve through following technical scheme:
The nanosecond continuous impulse ageing device of this kind vacuum interrupter comprises control system, DC power supply, energy-storage units, formation network, trigger element and control switch part; Said control system is connected to DC power supply and trigger element respectively; The output of DC power supply connects energy-storage units; Trigger element connects control switch, and energy-storage units is connected with the formation network, forms network and passes through the current limliting unit to the vacuum interrupter voltage pulse output; Said control unit also is connected on the energy-storage units; The bottom of said vacuum interrupter is provided with adjusting device;
The break-make of said control unit control DC power supply, the voltage magnitude of adjusting DC power supply charge to energy-storage units; And the operating frequency and the continuous impulse duration of setting trigger element; Said control switch is partly accepted the action command of trigger element, and control energy-storage units generation pulse, and said energy-storage units is to forming the direct discharge generation pulse voltage in the former limit of pulse transformer in the network; This pulse produces unidirectional nanosecond pulse through forming network, and the nanosecond pulse of generation loads on vacuum interrupter behind the current limliting unit.
Above-mentioned current limliting unit is noninductive high-tension resistive.
Above-mentioned control system comprises the single-chip microcomputer as central processing module, and said single-chip microcomputer is connected with signal transmission module, LED display module and ageing parameter man-machine Switching Module is set.
Above-mentioned single-chip microcomputer is AT89C52.
Above-mentioned LED display module is made up of charging voltage display module, expection pulse voltage display module and ageing parameter display module.
Based on the above device, the present invention also proposes a kind of method of aging, specifically may further comprise the steps:
1) at first with vacuum interrupter by the adjusting device vertical fixing, regulate the distance of opening of vacuum arc-extinguishing chamber contact;
2) adjust the ageing parameter, comprise the voltage magnitude of DC power supply, frequency and discharge period, and the size of current limliting unit; The repetition rate and the action time of pulse are set through control system;
3) adjust the ageing parameter after, vacuum interrupter is carried out ageing;
4) behind the completion ageing first time, the polarity of upset vacuum interrupter is carried out ageing once more, finishes until ageing.
In the above step 1); The clearance between open contacts of said vacuum interrupter is regulated by adjusting device; Said adjusting device is fixed the quiet end of contact; Utilize the adjusting bolt is connected with the contact moved end to regulate clearance between open contacts, it is initial value that contact has just divided the bolt in the moment to lift one's head length, and the difference of length and initial value of lifting one's head behind the adjusting bolt is the size of clearance between open contacts.
The present invention and at present existing ageing compared with techniques have the following advantages:
(1) ageing is effective, can significantly promote vacuum interrupter dielectric voltage withstand ability and reduce puncture voltage dispersed.Reason is 1) the ageing energy is little and controlled, and there is not " removing ageing " effect in the ageing process; 2) transient state ageing electric current is big, under electric field action, can remove the indoor insulation weakness of vacuum extinction effectively, selectively; 3) the contact surface ageing is even.
(2) ageing efficient is high, can effectively improve the production efficiency of vacuum interrupter manufacturing firm.
(3) control of ageing parameter is easy to adjust, is easy to staff's operation.
Description of drawings
Fig. 1 (a) is the schematic diagram of nanosecond continuous impulse ageing device;
Fig. 1 (b) is the schematic diagram of control system 1;
Fig. 2 is the structural representation of adjusting device 9;
Fig. 3 is the output waveform of continuous impulse generator;
Fig. 4 is the individual pulse output waveform of continuous impulse generator
Embodiment
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail:
Vacuum interrupter of the present invention nanosecond the continuous impulse ageing device formation shown in Fig. 1 (a).Comprising control system 1, DC power supply 2, energy-storage units 3, formation network 4, trigger element 5, control switch part 6, current limliting unit 7, vacuum interrupter 8 and adjusting device 9.Wherein control system 1 is connected to DC power supply 2 and trigger element 5 respectively; The output of DC power supply 2 connects energy-storage units 3; Trigger element 5 connects control switch 6, and energy-storage units 3 is connected with formation network 4, forms network 4 through 7 pairs of vacuum interrupter 8 voltage pulse outputs in current limliting unit; Control unit 6 also is connected on the energy-storage units 3; Adjusting device 9 is arranged on the bottom of vacuum interrupter 8.
Adjusting device 9 is as shown in Figure 2, comprises out apart from adjustment nut 9.1, dowel screw 9.2 and sleeve 9.3; The top of dowel screw 9.2 is that fine thread 9.4, bottom are coarse-pitch thread 9.5; Wherein, open distance adjustment nut 9.1 coaxial threaded and be equipped with on the fine thread on dowel screw 9.2 tops the coarse-pitch thread 9.5 of dowel screw 9.2 bottoms and the coaxial installation of the screw-internal thread fit of sleeve 9.3.
Control switch part of the present invention 6 is made up of hydrogen thyratron, accept the action command of trigger element 5 after, control energy-storage units 3 produces pulses, the high voltage pulse transformer of this pulse in forming network 4 and high voltage silicon stack generation nanosecond pulse voltage.The electric pulse that produces loads on vacuum interrupter 8 behind current limliting unit 7, realize the ageing to vacuum interrupter.The clearance between open contacts of vacuum interrupter 8 is regulated by device 9.Wherein current limliting unit 7 requires to be noninductive high-tension resistive, and adjusting device 9 needs to regulate the arc control device clearance between open contacts, and the clearance between open contacts size requirements is accurate to more than the 0.02mm.
Shown in Figure 3 Fig. 4 is the individual pulse waveform in order to form the continuous impulse output waveform of network, and its 10%～90% rising edge ascending time is a nanosecond.
Ageing parameter adjusting method involved in the present invention is explained as follows:
1) at first make vacuum interrupter 8 by adjusting device 9 vertical fixing; Adjusting device 9 is regulated the distance of opening of arc control device 8 contacts: adjusting device 9 is fixed the quiet end of contact; Utilize the adjusting bolt that is connected with the contact moved end to regulate clearance between open contacts; It is initial value that contact has just divided constantly bolt to lift one's head length, and the difference of length and initial value of lifting one's head of regulating behind the bolt is the size of clearance between open contacts.
2) adjust the ageing parameter, comprise voltage magnitude, frequency and the discharge period of DC power supply 3, and the size of current limliting unit 6.The repetition rate of pulse and action time are set through control system 1.Parameters of choice need be directed against different situations, selects suitable parameters.
3) adjust the ageing parameter after, ageing is carried out in vacuum extinction Room 8.
4) behind the completion ageing first time, the polarity of upset vacuum interrupter 8 is carried out ageing once more, finishes until ageing.
In sum; Vacuum interrupter nanosecond of the present invention, the continuous impulse ageing device was to utilize the hydrogen thyratron control switch to control the continuous conducting discharge of storage capacitor element, then through high voltage pulse transformer and high voltage silicon stack formation high pressure nanosecond continuous impulse voltage crowd.Ageing method based on this device is based on triggering frequency and the triggered time of SCM system through control hydrogen thyratron control switch, adjusts the repetition rate and the action time of nanosecond continuous impulse; Size control ageing voltage, electric current, the energy of capacity, charging voltage and current-limiting resistance through regulating storage capacitor are to reach the best ageing effect of vacuum interrupter.
Claims (7)
1. the nanosecond continuous impulse ageing device of a vacuum interrupter is characterized in that, comprises control system (1), DC power supply (2), energy-storage units (3), forms network (4), trigger element (5) and control switch part (6); Said control system (1) is connected to DC power supply (2) and trigger element (5) respectively; The output of DC power supply (2) connects energy-storage units (3); Trigger element (5) connects control switch (6); Energy-storage units (3) is connected with formation network (4), forms network (4) and passes through current limliting unit (7) to vacuum interrupter (8) voltage pulse output; Said control unit (6) also is connected on the energy-storage units (3); The bottom of said vacuum interrupter (8) is provided with adjusting device (9);
The voltage magnitude of the break-make of said control unit (1) control DC power supply (2), adjusting DC power supply (2) charges for energy-storage units (3); And the operating frequency and the continuous impulse duration of setting trigger element (5); Said control switch part (6) is accepted the action command of trigger element (5), and control energy-storage units (3) generation pulse, and said energy-storage units (3) is to forming the direct discharge generation pulse voltage in the former limit of pulse transformer in the network (4); This pulse produces unidirectional nanosecond pulse through forming network (4), and the nanosecond pulse of generation loads on vacuum interrupter (8) after current limliting unit (7).
2. the nanosecond continuous impulse ageing device of vacuum interrupter according to claim 1 is characterized in that, said current limliting unit (7) is noninductive high-tension resistive.
3. the nanosecond continuous impulse ageing device of vacuum interrupter according to claim 1; It is characterized in that; Said control system (1) comprises the single-chip microcomputer as central processing module, and said single-chip microcomputer is connected with signal transmission module, LED display module and ageing parameter man-machine Switching Module is set.
4. the nanosecond continuous impulse ageing device of vacuum interrupter according to claim 3 is characterized in that, said single-chip microcomputer is AT89C52.
5. the nanosecond continuous impulse ageing device of vacuum interrupter according to claim 3 is characterized in that, said LED display module is made up of charging voltage display module, expection pulse voltage display module and ageing parameter display module.
6. the method for aging based on the said device of claim 1 is characterized in that, may further comprise the steps:
1) at first makes vacuum interrupter (8) by adjusting device (9) vertical fixing, regulate the distance of opening of vacuum interrupter (8) contact;
2) adjustment comprises voltage magnitude, frequency and the discharge period of DC power supply (3) and the ageing parameter of current limliting unit (6) size; The repetition rate of pulse and action time are set through control system (1);
3) adjust the ageing parameter after, vacuum interrupter (8) is carried out ageing;
4) behind the completion ageing first time, the polarity of upset vacuum interrupter (8) is carried out ageing once more, finishes until ageing.
7. method of aging according to claim 6; It is characterized in that in the step 1), the clearance between open contacts of said vacuum interrupter (8) is regulated by adjusting device (9); Said adjusting device (9) is fixed the quiet end of contact; Utilize the adjusting bolt is connected with the contact moved end to regulate clearance between open contacts, it is initial value that contact has just divided the bolt in the moment to lift one's head length, and the difference of length and initial value of lifting one's head behind the adjusting bolt is the size of clearance between open contacts.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576123A (en) * | 2014-12-12 | 2015-04-29 | 天津平高智能电气有限公司 | Load shifting device and vacuum arc-extinguishing chamber aging device using load shifting device |
| CN106872888A (en) * | 2017-03-07 | 2017-06-20 | 西安交通大学 | The vacuum interrupter ageing device and method of a kind of DC stacked high-voltage pulse |
| CN107257209A (en) * | 2017-07-17 | 2017-10-17 | 中国科学技术大学 | A kind of high-voltage nanosecond pulse trigger applied to hydrogen thyratron |
| CN108039297A (en) * | 2017-12-05 | 2018-05-15 | 湖北大禹汉光真空电器有限公司 | A kind of voltage that adjusts in real time is to vacuum interrupter ageing device and its ageing method |
| CN108107332A (en) * | 2017-12-28 | 2018-06-01 | 江苏新亚高电压测试设备有限公司 | Pressure-resistant ageing control system and pressure-resistant ageing test system |
| CN110058135A (en) * | 2019-05-14 | 2019-07-26 | 云南电网有限责任公司电力科学研究院 | Autoelectronic current detects pilot system between a kind of arc-chutes contact |
| CN113764217A (en) * | 2021-08-24 | 2021-12-07 | 西安交通大学 | Vacuum arc-extinguishing chamber pulse voltage aging method capable of automatically adjusting aging energy |
| CN114295973A (en) * | 2021-12-30 | 2022-04-08 | 中国工程物理研究院流体物理研究所 | High-power gas switch pretreatment and aging method |
| CN117420424A (en) * | 2023-03-01 | 2024-01-19 | 深圳市爱科赛科技股份有限公司 | High-voltage aging system of vacuum switch tube |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576123A (en) * | 2014-12-12 | 2015-04-29 | 天津平高智能电气有限公司 | Load shifting device and vacuum arc-extinguishing chamber aging device using load shifting device |
| CN106872888B (en) * | 2017-03-07 | 2019-10-11 | 西安交通大学 | A kind of the vacuum interrupter ageing device and method of DC stacked high-voltage pulse |
| CN106872888A (en) * | 2017-03-07 | 2017-06-20 | 西安交通大学 | The vacuum interrupter ageing device and method of a kind of DC stacked high-voltage pulse |
| CN107257209A (en) * | 2017-07-17 | 2017-10-17 | 中国科学技术大学 | A kind of high-voltage nanosecond pulse trigger applied to hydrogen thyratron |
| CN108039297A (en) * | 2017-12-05 | 2018-05-15 | 湖北大禹汉光真空电器有限公司 | A kind of voltage that adjusts in real time is to vacuum interrupter ageing device and its ageing method |
| CN108107332A (en) * | 2017-12-28 | 2018-06-01 | 江苏新亚高电压测试设备有限公司 | Pressure-resistant ageing control system and pressure-resistant ageing test system |
| CN108107332B (en) * | 2017-12-28 | 2020-08-28 | 江苏新亚高电压测试设备有限公司 | Withstand voltage ageing control system and withstand voltage ageing test system |
| CN110058135A (en) * | 2019-05-14 | 2019-07-26 | 云南电网有限责任公司电力科学研究院 | Autoelectronic current detects pilot system between a kind of arc-chutes contact |
| CN113764217A (en) * | 2021-08-24 | 2021-12-07 | 西安交通大学 | Vacuum arc-extinguishing chamber pulse voltage aging method capable of automatically adjusting aging energy |
| CN113764217B (en) * | 2021-08-24 | 2022-06-07 | 西安交通大学 | Vacuum arc-extinguishing chamber pulse voltage aging method capable of automatically adjusting aging energy |
| CN114295973A (en) * | 2021-12-30 | 2022-04-08 | 中国工程物理研究院流体物理研究所 | High-power gas switch pretreatment and aging method |
| CN114295973B (en) * | 2021-12-30 | 2023-11-07 | 中国工程物理研究院流体物理研究所 | Pretreatment and aging method for high-power gas switch |
| CN117420424A (en) * | 2023-03-01 | 2024-01-19 | 深圳市爱科赛科技股份有限公司 | High-voltage aging system of vacuum switch tube |
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Application publication date: 20120425 |