CN104777337A - Thunder and lightning multiple-pulse waveform generating device - Google Patents
Thunder and lightning multiple-pulse waveform generating device Download PDFInfo
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- CN104777337A CN104777337A CN201510207765.7A CN201510207765A CN104777337A CN 104777337 A CN104777337 A CN 104777337A CN 201510207765 A CN201510207765 A CN 201510207765A CN 104777337 A CN104777337 A CN 104777337A
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 20
- 229910052710 silicon Inorganic materials 0.000 claims description 20
- 239000010703 silicon Substances 0.000 claims description 20
- 239000003990 capacitor Substances 0.000 claims description 14
- 230000001681 protective effect Effects 0.000 claims description 10
- 238000007599 discharging Methods 0.000 abstract 1
- 230000001012 protector Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 102100038023 DNA fragmentation factor subunit beta Human genes 0.000 description 1
- 101100277639 Homo sapiens DFFB gene Proteins 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Testing Electric Properties And Detecting Electric Faults (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
The invention discloses a thunder and lightning multiple-pulse waveform generating device. The device comprises a rectification unit, a plurality of charging units and a plurality of triggering units. The charging units are in one-to-one correspondence with the triggering units. The rectification unit is used for generating unipolarity currents and charging the charging units. The triggering units are used for giving out triggering signals, and the corresponding charging units are controlled for discharging. The thunder and lightning multiple-pulse waveform generating device can generate a plurality of pulse waveforms, and a surge protection device can be harshly tested.
Description
Technical field
The present invention is specifically related to a kind of thunder and lightning multiple pulse waveform generating means for detecting surge protector performance.
Background technology
At occurring in nature, the thunder and lightning of 80% is multiple-pulse.According to IEC62305-1, no matter be up thunder (or descending thunder), or positive polarity thunder and lightning or negative polarity thunder and lightning all likely occur multiple-pulse, especially, more easily there is multiple-pulse phenomenon in the descending thunder and lightning of negative polarity.
Test the main thunder and lightning monopulse that adopts to surge protector in the lab to carry out.Due to the maximum thermal effect being impact energy and producing of surge protector harm.Because multiple-pulse impact is shorter for interval time, surge protector is adiabatic phenomena, and this requires that surge protector can bear larger heat at short notice.The characteristic of impacting lower surge protector in order to understand nature lightning further just needs to adopt multiple-pulse to impact.Patent [publication No. is CN103018504] discloses a kind of surge generator that can produce 8/20 μ s and 10/350 μ s dash current, but cannot produce this two kinds of waveforms simultaneously; Patent [publication No. is CN101728969A] discloses a kind of generator that multiple dash current can occur.Although single pulse waveforms generator technology is comparatively general, and the domestic development to producing continuous or the multipulse pulse producer of batch (-type) is also fewer.Therefore, there is multipulse characteristic in conjunction with the needs of testing research and natural lightning, develop a kind of multiple-pulse thunder and lightning waveshape generating device, for the research and development of surge protector from now on and production work, there is directive significance.
Summary of the invention
The object of the invention is to solve the defect existed in prior art, a kind of device that effectively can produce multiple lightening pulse waveform is provided.
In order to achieve the above object, the invention provides a kind of thunder and lightning multiple pulse waveform generating means, this device comprises rectification unit, charhing unit and trigger element; Described charhing unit and trigger element are multiple, and one_to_one corresponding; Described rectification unit, for generation of single polarity current, and charges to described charhing unit; Described trigger element, for sending trigger pip, controls corresponding charhing unit electric discharge.
Wherein, rectification unit comprises step-up transformer T, high voltage silicon rectifier stack D and protective resistance r; Described charhing unit comprises charging resistor R, charging capacitor C and controllable silicon G; The main limit of described step-up transformer is connected with mains supply, secondary one end ground connection, one end is connected with charging resistor R one end of described charhing unit with protective resistance r by high voltage silicon rectifier stack D, and one end of charging capacitor C is connected with controllable silicon G with charging resistor R respectively, other end ground connection; The controllable silicon G of described charhing unit is connected with described trigger element.
Trigger element comprises d type flip flop, RC charge circuit and power amplifier; Described d type flip flop exports the controllable silicon of trigger pip to corresponding charhing unit by power amplifier; Described RC charge circuit is connected with described d type flip flop.
Above-mentioned RC charge circuit comprises protective resistance r, charging capacitor C and variable resistor R; The R port series resistor r of described d type flip flop and charging capacitor C, draws wire and is connected in variable resistor R between electric capacity C with resistance r, is then connected to the signal output port of d type flip flop.
The trigger element of thunder and lightning multiple pulse waveform generating means of the present invention is multiple, comprises main trigger element and at least one secondary trigger element; Described main trigger element also comprises trigger switch k; D type flip flop D port, the feeder ear Vcc of described main trigger element are connected with trigger switch k and connect+5V direct supply; The signal output port of the d type flip flop of described main trigger element is connected to the input port of corresponding power amplifier on the one hand, is connected on the other hand with the RC charge circuit of corresponding secondary trigger element.
Wherein, secondary trigger element can be multistage, the signal output port of the d type flip flop of the secondary trigger element of afterbody is connected to the input port of corresponding power amplifier, the signal output port of the d type flip flop of all the other every grade secondary trigger element is connected to the input port of corresponding power amplifier on the one hand, is connected on the other hand with the RC charge circuit of the secondary trigger element of next stage.
The present invention has the following advantages compared to existing technology: (1) thunder and lightning of the present invention multiple pulse waveform generating means can produce multiple pulse waveform, can carry out harsh test to surge protector; (2) apparatus of the present invention circuit has multiple-pulse number flexible, simple, easy to control and is easy to the feature of operation; (3) d type flip flop is adopted to have the advantage that control accuracy is high, antijamming capability good, efficiency is high; (4) charge circuit in trigger element adopts adjustable resistance, is easy to control the duration of charging, can gating pulse interval discharge time flexibly; (5) trigger circuit used are flexibly in Waveform Generator; (6) thunder and lightning multiple pulse waveform generating means of the present invention is widely used, and is not only applicable to voltage-limiting surge protector, is also applicable to switch-type surge protector.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of thunder and lightning multiple pulse waveform generating means of the present invention;
Fig. 2 is the circuit diagram of thunder and lightning multiple pulse waveform generating means rectification unit of the present invention;
Fig. 3 is the circuit diagram of thunder and lightning multiple pulse waveform generating means charhing unit of the present invention;
Fig. 4 is the circuit diagram of thunder and lightning multiple pulse waveform generating means trigger element of the present invention;
Fig. 5 is the circuit diagram of the main trigger element of thunder and lightning multiple pulse waveform generating means of the present invention;
Fig. 6 is the circuit diagram of the secondary trigger element of thunder and lightning multiple pulse waveform generating means of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
The circuit diagram of thunder and lightning multiple pulse waveform generating means of the present invention as shown in Figure 1.Thunder and lightning multiple pulse waveform generating means of the present invention comprises three parts: one is rectification unit, and two is charhing units, and three is trigger elements.Composition graphs 2, rectification unit is made up of step-up transformer T, high voltage silicon rectifier stack D and protective resistance r.Step-up transformer T main transformer is connected with mains supply, and for by 50Hz city electric boost, secondary one end ground connection, one end is connected with protective resistance r with by high voltage silicon rectifier stack D by K switch.K switch closes, and circuit working, electric current is exported by port one through protective resistance r after high voltage silicon rectifier stack D rectification.Port one is connected with the input port 2 of charhing unit.Electric current can obtain single polarity current by rectification unit.
Composition graphs 3, charhing unit is made up of charging resistor R and charging capacitor C, and charging capacitor one end is connected with charging resistor R, other end ground connection.Charhing unit controls by trigger element, realizes electric discharge controlled.Trigger element is made up of d type flip flop, RC charge circuit and power amplifier.According to actual needs, the trigger circuit that the above-mentioned device of many groups can be taked to form, realize the output of multiple pulse waveform.
In order to realize multiple-pulse electric discharge, adopt the charhing unit that n group is identical, trigger element adopts the trigger circuit be made up of corresponding number d type flip flop simultaneously.In order to realize the control of discharge times more neatly, being connected to K switch 1 ~ Kn in charging resistor R front end, when the switch is closed, this charge circuit work can being realized.Input port 2 is connected with the output port 1 of aforementioned rectification unit.When 2 ports have electric current to input, charge by closed K switch 1 ~ Kn to capacitor C1 ~ Cn through charging resistor R1 ~ Rn.Charging resistor R1 ~ Rn plays the effect of buffering, current limliting, for the protection of charging capacitor C1 ~ Cn.This charging circuit has the effect of electric discharge simultaneously, when trigger element DFF(D trigger) when sending trigger pip to controllable silicon G1 ~ Gn, controllable silicon G1 ~ Gn conducting, charging capacitor C1 ~ Cn outwards will discharge through controllable silicon G1 ~ Gn.Its middle port 4 and port 5 are output port of the present invention, can receive test article.The trigger pip sent due to d type flip flop has time delay, and therefore, above-mentioned discharge process is separate, has non-concurrent, can realize the requirement that pulse is not being discharged in the same time.
As shown in Figure 4, trigger element is made up of n d type flip flop, RC charge circuit and power amplifier.Port one ~ n is connected with the controllable silicon G1 ~ Gn in aforementioned charging circuit, for transmitting trigger pip.Resistance R1 ~ Rn in this element circuit in RC charge circuit adopts adjustable resistance.And trigger element comprises main trigger element and multiple secondary trigger element.
Composition graphs 5, as main trigger element, it realizes triggering multipulse basis.Main trigger element is made up of trigger switch k, d type flip flop, RC charge circuit and power amplifier four part.D type flip flop 1D port, feeder ear Vcc are connected with trigger switch k and connect+5V direct supply.1S port and Vss hold ground connection, 1R port serial connection protective resistance r and charging capacitor C1, then ground connection.Between electric capacity C1 with resistance r, draw wire and be connected in variable resistor R1, being then connected to the signal output port 1Q port of d type flip flop.1Q port, is connected to the input port of power amplifier on the one hand, exports from the transmitting collection of amplifier for trigger pip being amplified, and is used for signal to be charged by the RC charge circuit of 1 port to secondary trigger on the other hand.The principle of work of circuit is: after K switch merges, 1CP has rising edge signal, 1D and Vcc is connected to high level, 1S and Vss is connected to low level, and now 1R is low level, and according to the output characteristics of d type flip flop, 1Q exports as high level.The trigger pip of the high level exported from 1Q as first pulse after amplifying circuit amplifies sends from 2 ports, the high level signal that 1Q exports simultaneously charges to electric capacity C1 through variable resistor R1, when the voltage at C1 two ends reaches resetting voltage, namely 1R is high level, circuit reset, 1Q end becomes low level, and transient state terminates, circuit is returned to stable state, now first end-of-pulsing.When 1Q exports high level, by means of only variable resistor R1, electric capacity C1 is not charged, charge by 2 ports to the RC charge circuit in next stage trigger element equally.
According to actual needs, multiple secondary trigger element can be set.As needs 10 pulses, then except needs arrange 1 main trigger element, 9 secondary trigger elements also should be set.Composition and the connection mode of secondary trigger element are identical.As shown in Figure 6, for first secondary trigger element, the 2S port of d type flip flop is connected with+5V direct supply with Vcc end.Vss holds ground connection, and 2D end is held unsettled with 2CP, and the end of d type flip flop is except being connected with power amplifier, and the RC charge circuit exporting outer also trigger element secondary with next stage for trigger pip is connected.The RC charge circuit input port 3 of trigger element at the corresponding levels is connected with the 1Q port of upper level.Its principle of work is: when after 3 port accepts to the output signal of the 1Q port of main trigger element, RC charge circuit will charge, after electric capacity C2 one end is high level, when namely reaching resetting voltage, namely when 2R is high level, because 2S is high level, therefore d type flip flop DFF2 exports high level signal, this signal outwards exports through output port 5 after power amplifier amplifies, and namely produces second pulse triggering signal.In like manner, when exporting high level, by variable resistor R3, electric capacity C3 is charged, when C3 both end voltage reaches resetting voltage, export high level, produce the 3rd pulse signal.By that analogy, produce n pulse signal and input to SCR control port G1 ~ Gn through port one ~ port n respectively, control silicon controlled conducting.Interpulse interval time according to formula, can change the value of R1 ~ Rn and the duration of charging t of adjustable C1 ~ Cn, thus realizes Time delay, produce multiple lightening pulse waveform.
Claims (6)
1. a thunder and lightning multiple pulse waveform generating means, is characterized in that, described thunder and lightning multiple pulse waveform generating means comprises rectification unit, charhing unit and trigger element; Described charhing unit and trigger element are multiple, and one_to_one corresponding;
Described rectification unit, for generation of single polarity current, and charges to described charhing unit;
Described trigger element, for sending trigger pip, controls corresponding charhing unit electric discharge.
2. thunder and lightning multiple pulse waveform generating means according to claim 1, is characterized in that, described rectification unit comprises step-up transformer T, high voltage silicon rectifier stack D and protective resistance r; Described charhing unit comprises charging resistor R, charging capacitor C and controllable silicon G; The main limit of described step-up transformer is connected with mains supply, secondary one end ground connection, one end is connected with charging resistor R one end of described charhing unit with protective resistance r by high voltage silicon rectifier stack D, and one end of charging capacitor C is connected with controllable silicon G with charging resistor R respectively, other end ground connection; The controllable silicon G of described charhing unit is connected with described trigger element.
3. thunder and lightning multiple pulse waveform generating means according to claim 2, is characterized in that, described trigger element comprises d type flip flop, RC charge circuit and power amplifier; Described d type flip flop exports the controllable silicon of trigger pip to corresponding charhing unit by power amplifier; Described RC charge circuit is connected with described d type flip flop.
4. thunder and lightning multiple pulse waveform generating means according to claim 3, is characterized in that, described RC charge circuit comprises protective resistance r, charging capacitor C and variable resistor R; The R port series resistor r of described d type flip flop and charging capacitor C, draws wire and is connected in variable resistor R between electric capacity C with resistance r, is then connected to the signal output port of d type flip flop.
5. thunder and lightning multiple pulse waveform generating means according to claim 4, is characterized in that, described trigger element is multiple, comprises main trigger element and at least one secondary trigger element; Described main trigger element also comprises trigger switch k; D type flip flop D port, the feeder ear Vcc of described main trigger element are connected with trigger switch k and connect+5V direct supply; The signal output port of the d type flip flop of described main trigger element is connected to the input port of corresponding power amplifier on the one hand, is connected on the other hand with the RC charge circuit of corresponding secondary trigger element.
6. thunder and lightning multiple pulse waveform generating means according to claim 5, it is characterized in that, described secondary trigger element is multistage, the signal output port of the d type flip flop of the secondary trigger element of afterbody is connected to the input port of corresponding power amplifier, the signal output port of the d type flip flop of all the other every grade secondary trigger element is connected to the input port of corresponding power amplifier on the one hand, is connected on the other hand with the RC charge circuit of the secondary trigger element of next stage.
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| CN201510207765.7A CN104777337B (en) | 2015-04-28 | 2015-04-28 | Thunder and lightning multiple-pulse waveform generating device |
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| CN201510207765.7A CN104777337B (en) | 2015-04-28 | 2015-04-28 | Thunder and lightning multiple-pulse waveform generating device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196100A (en) * | 2018-03-06 | 2018-06-22 | 北京华天机电研究所有限公司 | The multiple counterattack wave impact current feedback circuit realized using vacuum switch |
| CN110568234A (en) * | 2019-07-12 | 2019-12-13 | 工业和信息化部威海电子信息技术综合研究中心 | pulse generating device for simulating lightning surge test |
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2015
- 2015-04-28 CN CN201510207765.7A patent/CN104777337B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070273429A1 (en) * | 2003-12-30 | 2007-11-29 | Empresa Brasileira De Compressories S.A. - Embraco | System Of Controlling And Triggering A Triac And A Method Of Controlling The Triggering Of A Triac |
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Non-Patent Citations (1)
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| 刘洋等: "智能化冲击电流试验系统", 《电力自动化设备》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196100A (en) * | 2018-03-06 | 2018-06-22 | 北京华天机电研究所有限公司 | The multiple counterattack wave impact current feedback circuit realized using vacuum switch |
| CN110568234A (en) * | 2019-07-12 | 2019-12-13 | 工业和信息化部威海电子信息技术综合研究中心 | pulse generating device for simulating lightning surge test |
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| CN104777337B (en) | 2017-05-10 |
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