CN203433011U - A gapless lightning impulse current generating device - Google Patents
A gapless lightning impulse current generating device Download PDFInfo
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- CN203433011U CN203433011U CN201320549127.XU CN201320549127U CN203433011U CN 203433011 U CN203433011 U CN 203433011U CN 201320549127 U CN201320549127 U CN 201320549127U CN 203433011 U CN203433011 U CN 203433011U
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Abstract
The utility model relates to a lightning impulse current generating device and specifically to a gapless lightning impulse current generating device. The gapless lightning impulse current generating device comprises a power supply transformer T. The master side of the power supply transformer T is connected with a charging power supply. One end of the slave side of the power supply transformer T is connected with ground, while the other end of the slave side of the power supply transformer T is connected with the collector electrode of an insulated gate bipolar transistor (IGBT) VT0. The emitter electrode of the IGBT VT0 is successively connected with a rectifier DZ and a charging resistor R connected in series and then is connected with the collector electrode of an IGBT VT. The collector electrode of the IGBT VT is connected with the positive pole of a charging capacitor C. The negative pole of the charging capacitor C is connected with ground. The emitter electrode of the IGBT VT is connected with one end of a high-voltage ZX sample. The other end of the high-voltage ZX sample is connected with ground. The grid electrode G0 of the IGBT VT0 and the grid electrode G of the IGBT VT are both connected with a driving circuit. The lightning impulse current generating device has advantages of no misoperation, easy manipulation, high operating frequency, and low power of the driving circuit.
Description
Technical field
The utility model relates to a kind of lightning impulse current generating means, is specifically related to a kind of gapless lightning impulse current generator.
Background technology
Along with the development of super UHV Transmission Engineering, lightning impulse current generator has become one of visual plant of each high-voltage test chamber, utilizes lightning impulse current generator to carry out lightning impulse current test to high-tension apparatus.Impulse current waveform must be accurately in test, the too high easy damage equipment of dash current amplitude, the too low test objective that do not reach of dash current amplitude.
As shown in Figure 1, the dependence of traditional lightning impulse current generator loop punctures air and comes the mode efficiency of conduction current low, and poor anti jamming capability is controlled difficulty large, often occurs the malfunction of air balls gap or tripping situation.Ball-gap discharge has dispersiveness, affected by atmospheric conditions, dust, sphere state etc., therefore with switching device, replace ball discharge gap, can improve the serviceability of lightning impulse current generator, realize the control of flexible and convenient, in a lot of tests, be significant.
Utility model content
The purpose of this utility model is to provide a kind of gapless lightning impulse current generator, solves existing generating means and exists efficiency low, and poor anti jamming capability, controls difficulty large, often occurs the problem of the malfunction of air balls gap or tripping.
For solving above-mentioned technical matters, the utility model by the following technical solutions:
Scheme one: a kind of gapless lightning impulse current generator, comprise the supply transformer T that main limit is connected with charge power supply, secondary one end ground connection of supply transformer T, the other end connects the collector of insulated gate bipolar transistor VT0, the emitter connection of insulated gate bipolar transistor VT0 is connected in series rectifier DZ and charging resistor R successively, be connected to again the collector of insulated gate bipolar transistor VT, the collector of insulated gate bipolar transistor VT is connected to the positive pole of charging capacitor C, the minus earth of charging capacitor C, the emitter of described insulated gate bipolar transistor VT is connected to one end of high pressure test product ZX, the other end ground connection of high pressure test product ZX, the grid G 0 of wherein said insulated gate bipolar transistor VT0 and the grid G of insulated gate bipolar transistor VT are all connected to driving circuit.
Further technical scheme is, described charging resistor R, insulated gate bipolar transistor VT and charging capacitor C are interconnected to constitute and discharge and recharge generation group, this gapless lightning impulse current generator comprises that at least two groups discharge and recharge generation group, every group of charging resistor R(1 discharging and recharging in generation group ... n) be all connected to rectifier D, insulated gate bipolar transistor VT(1 ... n) emitter is all connected to one end of high pressure test product ZX, insulated gate bipolar transistor VT(1 ... n) grid G (1 ... n) be all connected to driving circuit, charging capacitor C(1 ... n) the equal ground connection of negative pole.
Technical scheme further, described driving circuit mainly connects photoelectric coupling loop by single-chip microcomputer and forms, between the grid of described insulated gate bipolar transistor VT and emitter, be provided with the equal hydraulic circuit of grid, between the collector and emitter of described insulated gate bipolar transistor VT, be provided with static state voltage equipoise loop and dynamic voltage balancing loop.
Technical scheme further, the equal hydraulic circuit of described grid is mainly by being mutually connected in series Zener diode DQ and direction diode DF forms, wherein the negative pole of Zener diode DQ is connected to the emitter of insulated gate bipolar transistor VT, and the negative pole of direction diode DF is connected to the grid of insulated gate bipolar transistor VT.
Technical scheme further, described static state voltage equipoise loop mainly consists of the resistance R T being connected between the collector and emitter of insulated gate bipolar transistor VT; Described dynamic voltage balancing loop mainly consists of with serial connection capacitor C S resistance R S and diode DS parallel connection, wherein the positive pole of diode DS is connected to the collector of insulated gate bipolar transistor VT, and one end of described capacitor C S is connected to the emitter of insulated gate bipolar transistor VT.
Insulated gate bipolar transistor abbreviation IGBT (Insulated Gate Bipolar Transistor), the compound full-control type voltage driven type power semiconductor device being comprised of BJT (double pole triode) and MOS (insulating gate type field effect tube), has the advantage of the high input impedance of MOSFET and low conduction voltage drop two aspects of GTR concurrently.GTR saturation pressure reduces, and current carrying density is large, but drive current is larger; MOSFET driving power is very little, and switching speed is fast, but conduction voltage drop is large, and current carrying density is little.IGBT combines the advantage of above two kinds of devices, and the little and saturation pressure of driving power reduces.Be applicable to being very much applied to DC voltage and be 600V and above converter system as fields such as alternating current generator, frequency converter, Switching Power Supply, lighting circuit, Traction Drives.
Scheme two: a kind of gapless lightning impulse current generator, comprise the supply transformer T that main limit is connected with charge power supply, secondary one end ground connection of supply transformer T and the input end of controllable silicon D0, the output terminal of controllable silicon D0 is connected in series rectifier DZ and charging resistor R successively, be connected to again the positive pole of controllable silicon D, the positive pole of controllable silicon D is also connected to the positive pole of charging capacitor C, the minus earth of charging capacitor C, the negative pole of described controllable silicon D is connected to one end of high pressure test product ZX, the other end ground connection of high pressure test product ZX, the grid G 0 of wherein said controllable silicon D0 and the grid G of controllable silicon D are all connected to driving circuit.
Further technical scheme is, described charging resistor R, controllable silicon D and charging capacitor C are interconnected to constitute and discharge and recharge generation group, this gapless lightning impulse current generator comprises that at least two groups discharge and recharge generation group, every group of charging resistor R(1 discharging and recharging in generation group ... n) be all connected to rectifier D, controllable silicon D(1 ... n) negative pole is all connected to one end of high pressure test product ZX, controllable silicon D(1 ... n) grid G (1 ... n) be all connected to driving circuit, charging capacitor C(1 ... n) the equal ground connection of negative pole.
Further technical scheme is, described driving circuit mainly connects photoelectric coupling loop by single-chip microcomputer and forms, between the grid of described controllable silicon D and negative pole, be provided with the equal hydraulic circuit of grid, between the positive pole of described controllable silicon D and negative pole, be provided with static state voltage equipoise loop and dynamic voltage balancing loop.
Further technical scheme is, the equal hydraulic circuit of described grid is mainly by being mutually connected in series Zener diode DQ and direction diode DF forms, wherein the negative pole of Zener diode DQ is connected to the negative pole of controllable silicon D, and the negative pole of direction diode DF is connected to the grid of controllable silicon D.
Further technical scheme is, described static state voltage equipoise loop mainly forms by being connected to the positive pole of controllable silicon D and the resistance R T between negative pole; Described dynamic voltage balancing loop mainly consists of with serial connection capacitor C S resistance R S and diode DS parallel connection, and wherein the positive pole of diode DS is connected to the negative pole of controllable silicon D, and one end of described capacitor C S is connected to the positive pole of controllable silicon D.
Compared with prior art, the beneficial effects of the utility model are: the utility model has solved the difficult control of conventional impact current feedback circuit discharge current waveform, high energy consumption, low-repetition-frequency and the short defect of switch life, advantages such as having without malfunction, easily control, frequency of operation is high, drive circuit power is little, can be applicable to the high-potting of modern super extra-high voltage equipment.
Accompanying drawing explanation
Fig. 1 is existing lightning impulse current generator circuit connection layout.
Fig. 2 is the circuit connection diagram that a kind of gapless lightning impulse current of the utility model generator uses insulated gate bipolar transistor.
Fig. 3 is the circuit connection diagram that a kind of gapless lightning impulse current of the utility model generator uses a preferred embodiment of insulated gate bipolar transistor.
Fig. 4 is that a kind of gapless lightning impulse current of the utility model generator uses silicon controlled circuit connection diagram.
A kind of gapless lightning impulse current of Fig. 5 the utility model generator uses the circuit connection diagram of a preferred embodiment of controllable silicon.
Fig. 6 is the driving circuit connection layout of a preferred embodiment of a kind of gapless lightning impulse current generator of the utility model shown in Fig. 3 or Fig. 5.
Fig. 7 is equalizer circuit connection layout in preferred embodiment of a kind of gapless lightning impulse current of the utility model shown in Fig. 3 generator.
Fig. 8 is equalizer circuit connection layout in preferred embodiment of a kind of gapless lightning impulse current of the utility model shown in Fig. 5 generator.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
According to an embodiment of a kind of gapless lightning impulse current of the utility model generator: a kind of gapless lightning impulse current generator, comprise the supply transformer T that main limit is connected with charge power supply, secondary one end ground connection of supply transformer T, the other end connects the collector of insulated gate bipolar transistor VT0, the emitter connection of insulated gate bipolar transistor VT0 is connected in series rectifier DZ and charging resistor R successively, be connected to again the collector of insulated gate bipolar transistor VT, the collector of insulated gate bipolar transistor VT is connected to the positive pole of charging capacitor C, the minus earth of charging capacitor C, the emitter of described insulated gate bipolar transistor VT is connected to one end of high pressure test product ZX, the other end ground connection of high pressure test product ZX, the grid G 0 of wherein said insulated gate bipolar transistor VT0 and the grid G of insulated gate bipolar transistor VT are all connected to driving circuit.
Fig. 2 shows a preferred embodiment of a kind of gapless lightning impulse current of the utility model generator, described charging resistor R, insulated gate bipolar transistor VT and charging capacitor C are interconnected to constitute and discharge and recharge generation group, this gapless lightning impulse current generator comprises that at least two groups discharge and recharge generation group, every group of charging resistor R(1 discharging and recharging in generation group ... n) be all connected to rectifier D, insulated gate bipolar transistor VT(1 ... n) emitter is all connected to one end of high pressure test product ZX, insulated gate bipolar transistor VT(1 ... n) grid G (1 ... n) be all connected to driving circuit, charging capacitor C(1 ... n) the equal ground connection of negative pole.
Fig. 3, Fig. 6 and Fig. 7 show another preferred embodiment of a kind of gapless lightning impulse current of the utility model generator, described driving circuit mainly connects photoelectric coupling loop by single-chip microcomputer and forms, between the grid of described insulated gate bipolar transistor VT and emitter, be provided with the equal hydraulic circuit of grid, between the collector and emitter of described insulated gate bipolar transistor VT, be provided with static state voltage equipoise loop and dynamic voltage balancing loop.
According to another preferred embodiment of a kind of gapless lightning impulse current of the utility model generator, the equal hydraulic circuit of described grid is mainly by being mutually connected in series Zener diode DQ and direction diode DF forms, wherein the negative pole of Zener diode DQ is connected to the emitter of insulated gate bipolar transistor VT, and the negative pole of direction diode DF is connected to the grid of insulated gate bipolar transistor VT.Can utilize the effect of Zener diode clamper to control the voltage of insulated gate bipolar transistor VT.
The principle of the equal hydraulic circuit of grid is: when the voltage of insulated gate bipolar transistor VT is during lower than the clamp voltage of Zener diode DQ, control circuit is failure to actuate; Once the voltage of insulated gate bipolar transistor VT is higher than Zener diode DQ voltage, Zener diode DQ is breakdown, and extra voltage will be added to grid, makes insulated gate bipolar transistor VT be tending towards conducting, thereby reduces terminal voltage.
According to another preferred embodiment of a kind of gapless lightning impulse current of the utility model generator, described static state voltage equipoise loop mainly consists of the resistance R T being connected between the collector and emitter of insulated gate bipolar transistor VT; Described dynamic voltage balancing loop mainly consists of with serial connection capacitor C S resistance R S and diode DS parallel connection, wherein the positive pole of diode DS is connected to the collector of insulated gate bipolar transistor VT, and one end of described capacitor C S is connected to the emitter of insulated gate bipolar transistor VT.
Quiescent voltage equilibrium can be realized by each device two ends equalizing resistance in parallel in static state voltage equipoise loop.At the resistance R T of collector certain resistance in parallel with emitter two ends, when two IGBT series connection, RT value is that IGBT turn-offs resistance value R
off.
Computing formula:
the FZ400R65KE3 type IGBT of Germany company of Infineon (infineon) issue in June, V
cES=6500V, leakage current (cut-off current) I
cES=5mA, gets V
cES=5000V, obtains R
off=1M Ω (consider and bear voltage difference in 10% between series IGBT, can not choose too much, otherwise reach, all do not press object by static voltage sharing; Resistance is too little can be produced compared with lossy.Generally get IGBT and close 1/10th of resistance break,
parallel resistance RT=100k Ω).
The principle of work in dynamic voltage balancing loop is: when indivedual IGBT shorting advances or while turn-offing in advance, certainly lead to peak voltage, DS shunt capacitance CS is passed through at two ends at IGBT, peak voltage must first be charged to CS, the ascending velocity of the peak voltage at IGBT two ends is subject to the restriction of CS like this, and can, by the CS dividing potential drop that is connected in parallel on each IGBT two ends, by CS, realize the equilibrium to dynamic peak voltage.In IGBT conduction period, due to the unilateal conduction characteristic of DS, CS bleeds off the electric charge of storage by RS, IGBT, to absorb the surge voltage producing when IGBT turn-offs next time.So the RCD buffer circuit in present technique not only plays stepless action, can also do excess voltage protection.
Course of work when a kind of gapless lightning impulse current of the utility model generator uses insulated gate bipolar transistor VT:
1, charging process, it is open-minded that single-chip microcomputer sends signal controlling VT0, and VT1～VTn turn-offs, and supply transformer T,, is impacted condenser voltage and equals charge power supply commutating voltage after charging n impact capacitor C charged in parallel by rectifier D.
2, discharge process, single-chip microcomputer sends signal and turn-offs VT0, opens VT1～VTn, and n impact capacitor C produces dash current to output terminal simultaneously.
It is worthy of note: in Fig. 2, Fig. 3, Fig. 7 and above-described embodiment, VT0-VTn and VT describe and add in order to distinguish and to facilitate, all refer to insulated gate bipolar transistor (IGBT), the good C1-Cn of charging resistor R and R1-Rn, grid G and G1-Gn and charging capacitor C all in like manner.
According to an embodiment of a kind of gapless lightning impulse current of the utility model generator: a kind of gapless lightning impulse current generator, comprise the supply transformer T that main limit is connected with charge power supply, secondary one end ground connection of supply transformer T and the input end of controllable silicon D0, the output terminal of controllable silicon D0 is connected in series rectifier DZ and charging resistor R successively, be connected to again the positive pole of controllable silicon D, the positive pole of controllable silicon D is also connected to the positive pole of charging capacitor C, the minus earth of charging capacitor C, the negative pole of described controllable silicon D is connected to one end of high pressure test product ZX, the other end ground connection of high pressure test product ZX, the grid G 0 of wherein said controllable silicon D0 and the grid G of controllable silicon D are all connected to driving circuit.
Fig. 4 shows a preferred embodiment of a kind of gapless lightning impulse current of the utility model generator, described charging resistor R, controllable silicon D and charging capacitor C are interconnected to constitute and discharge and recharge generation group, this gapless lightning impulse current generator comprises that at least two groups discharge and recharge generation group, every group of charging resistor R(1 discharging and recharging in generation group ... n) be all connected to rectifier D, controllable silicon D(1 ... n) negative pole is all connected to one end of high pressure test product ZX, controllable silicon D(1 ... n) grid G (1 ... n) be all connected to driving circuit, charging capacitor C(1 ... n) the equal ground connection of negative pole.
Fig. 5, Fig. 6 and Fig. 8 show another preferred embodiment of a kind of gapless lightning impulse current of the utility model generator, described driving circuit mainly connects photoelectric coupling loop by single-chip microcomputer and forms, between the grid of described controllable silicon D and negative pole, be provided with the equal hydraulic circuit of grid, between the positive pole of described controllable silicon D and negative pole, be provided with static state voltage equipoise loop and dynamic voltage balancing loop.
According to another preferred embodiment of a kind of gapless lightning impulse current of the utility model generator, the equal hydraulic circuit of described grid is mainly by being mutually connected in series Zener diode DQ and direction diode DF forms, wherein the negative pole of Zener diode DQ is connected to the negative pole of controllable silicon D, and the negative pole of direction diode DF is connected to the grid of controllable silicon D.Can utilize the effect of Zener diode DQ clamper to control the voltage of controllable silicon D.
The principle of the equal hydraulic circuit of grid is: when the voltage of controllable silicon D is during lower than the clamp voltage of Zener diode DQ, control circuit is failure to actuate; Once the voltage of controllable silicon D is higher than zener diode voltage DQ, Zener diode DQ is breakdown, and extra voltage will be added to grid, makes controllable silicon D be tending towards conducting, thereby reduces terminal voltage.
According to another preferred embodiment of a kind of gapless lightning impulse current of the utility model generator, described static state voltage equipoise loop mainly forms by being connected to the positive pole of controllable silicon D and the resistance R T between negative pole; Described dynamic voltage balancing loop mainly consists of with serial connection capacitor C S resistance R S and diode DS parallel connection, and wherein the positive pole of diode DS is connected to the negative pole of controllable silicon D, and one end of described capacitor C S is connected to the positive pole of controllable silicon D.
Quiescent voltage equilibrium can be realized by each device two ends equalizing resistance in parallel in static state voltage equipoise loop.At resistance R T anodal and negative pole two ends certain resistance in parallel, when two controllable silicon D series connection, RT value is that controllable silicon D turn-offs resistance value R
off.
Computing formula:
v
cES=6500V leakage current (cut-off current) I
cES=5mA, gets V
cES=5000V, obtains R
off=1M Ω (consider and bear voltage difference in 10% between serial connection controllable silicon D, can not choose too much, otherwise reach, all do not press object by static voltage sharing; Resistance is too little can be produced compared with lossy.Generally get controllable silicon D and close 1/10th of resistance break,
parallel resistance RT=100k Ω).
The principle of work in dynamic voltage balancing loop is: when indivedual controllable silicon D shorting advances or while turn-offing in advance, certainly lead to peak voltage, DS shunt capacitance CS is passed through at two ends at controllable silicon D, peak voltage must first be charged to CS, the ascending velocity of the peak voltage at controllable silicon D two ends is subject to the restriction of CS like this, and can, by the CS dividing potential drop that is connected in parallel on each controllable silicon D two ends, by CS, realize the equilibrium to dynamic peak voltage.In controllable silicon D conduction period, due to the unilateal conduction characteristic of DS, CS bleeds off the electric charge of storage by RS, controllable silicon D, to absorb the surge voltage producing when controllable silicon D turn-offs next time.So the RCD buffer circuit in present technique not only plays stepless action, can also do excess voltage protection.
A kind of gapless lightning impulse current of the utility model generator uses the course of work of controllable silicon D:
1, charging process, it is open-minded that single-chip microcomputer sends signal controlling D0, and D1～Dn turn-offs, and supply transformer T,, is impacted condenser voltage and equals charge power supply commutating voltage after charging n impact capacitor C charged in parallel by rectifier DZ.
2, discharge process, single-chip microcomputer sends signal and turn-offs D0, opens D1～Dn, and n impact capacitor C produces dash current to output terminal simultaneously.
It is worthy of note: in Fig. 4, Fig. 5, Fig. 8 and above-described embodiment, D and D1-Dn describe and add in order to distinguish and to facilitate, and all refer to controllable silicon D, and the good C1-Cn of charging resistor R and R1-Rn, grid G and G1-Gn and charging capacitor C all in like manner.
The utility model has designed multiple voltage equalizing protection measure and Drive and Control Circuit, to guarantee that switching device shifter brings into play the good effect of cut-offfing in charging and discharging circuit.Progress along with Power Electronic Technique, the IGBT of higher voltage withstand class or controllable silicon will come into operation, be expected to replace IGBT or silicon controlled connection in series-parallel to use, the series of problems that IGBT or controllable silicon in serial connection cause has not when the time comes existed yet, circuit also will be simplified more, and this mode will be used in a large number.
Feature of the present utility model: (1) gapless, adopted automatic controlled high pressure high pass capacity switch, can be rapidly under the triggering of pulse signal, action exactly, reduced the volume of whole device, improve space availability ratio.(2) eliminate the electromagnetic noise bringing when the igniting of air balls gap punctures, avoid the electromagnetic pollution to human body and environment.
Claims (10)
1. a gapless lightning impulse current generator, it is characterized in that: comprise the supply transformer T that main limit is connected with charge power supply, secondary one end ground connection of supply transformer T, the other end connects the collector of insulated gate bipolar transistor VT0, the emitter connection of insulated gate bipolar transistor VT0 is connected in series rectifier DZ and charging resistor R successively, be connected to again the collector of insulated gate bipolar transistor VT, the collector of insulated gate bipolar transistor VT is connected to the positive pole of charging capacitor C, the minus earth of charging capacitor C, the emitter of described insulated gate bipolar transistor VT is connected to one end of high pressure test product ZX, the other end ground connection of high pressure test product ZX, the grid G 0 of wherein said insulated gate bipolar transistor VT0 and the grid G of insulated gate bipolar transistor VT are all connected to driving circuit.
2. a kind of gapless lightning impulse current generator according to claim 1, it is characterized in that: described charging resistor R, insulated gate bipolar transistor VT and charging capacitor C are interconnected to constitute and discharge and recharge generation group, this gapless lightning impulse current generator comprises that at least two groups discharge and recharge generation group, every group of charging resistor R(1 discharging and recharging in generation group ... n) be all connected to rectifier D, insulated gate bipolar transistor VT(1 ... n) emitter is all connected to one end of high pressure test product ZX, insulated gate bipolar transistor VT(1 ... n) grid G (1 ... n) be all connected to driving circuit, charging capacitor C(1 ... n) the equal ground connection of negative pole.
3. a kind of gapless lightning impulse current generator according to claim 1 and 2, it is characterized in that: described driving circuit connects photoelectric coupling loop by single-chip microcomputer and forms, between the grid of described insulated gate bipolar transistor VT and emitter, be provided with the equal hydraulic circuit of grid, between the collector and emitter of described insulated gate bipolar transistor VT, be provided with static state voltage equipoise loop and dynamic voltage balancing loop.
4. a kind of gapless lightning impulse current generator according to claim 3, it is characterized in that: the equal hydraulic circuit of described grid is by being mutually connected in series Zener diode DQ and direction diode DF forms, wherein the negative pole of Zener diode DQ is connected to the emitter of insulated gate bipolar transistor VT, and the negative pole of direction diode DF is connected to the grid of insulated gate bipolar transistor VT.
5. a kind of gapless lightning impulse current generator according to claim 3, is characterized in that: described static state voltage equipoise loop consists of the resistance R T being connected between the collector and emitter of insulated gate bipolar transistor VT; Described dynamic voltage balancing loop is by resistance R S and diode DS is in parallel and serial connection capacitor C S forms, wherein the positive pole of diode DS is connected to the collector of insulated gate bipolar transistor VT, and one end of described capacitor C S is connected to the emitter of insulated gate bipolar transistor VT.
6. a gapless lightning impulse current generator, it is characterized in that: comprise the supply transformer T that main limit is connected with charge power supply, secondary one end ground connection of supply transformer T and the input end of controllable silicon D0, the output terminal of controllable silicon D0 is connected in series rectifier DZ and charging resistor R successively, be connected to again the positive pole of controllable silicon D, the positive pole of controllable silicon D is also connected to the positive pole of charging capacitor C, the minus earth of charging capacitor C, the negative pole of described controllable silicon D is connected to one end of high pressure test product ZX, the other end ground connection of high pressure test product ZX, the grid G 0 of wherein said controllable silicon D0 and the grid G of controllable silicon D are all connected to driving circuit.
7. a kind of gapless lightning impulse current generator according to claim 6, it is characterized in that: described charging resistor R, controllable silicon D and charging capacitor C are interconnected to constitute and discharge and recharge generation group, this gapless lightning impulse current generator comprises that at least two groups discharge and recharge generation group, every group of charging resistor R(1 discharging and recharging in generation group ... n) be all connected to rectifier D, controllable silicon D(1 ... n) negative pole is all connected to one end of high pressure test product ZX, controllable silicon D(1 ... n) grid G (1 ... n) be all connected to driving circuit, charging capacitor C(1 ... n) the equal ground connection of negative pole.
8. according to a kind of gapless lightning impulse current generator described in claim 6 or 7, it is characterized in that: described driving circuit connects photoelectric coupling loop by single-chip microcomputer and forms, between the grid of described controllable silicon D and negative pole, be provided with the equal hydraulic circuit of grid, between the positive pole of described controllable silicon D and negative pole, be provided with static state voltage equipoise loop and dynamic voltage balancing loop.
9. a kind of gapless lightning impulse current generator according to claim 8, it is characterized in that: the equal hydraulic circuit of described grid is by being mutually connected in series Zener diode DQ and direction diode DF forms, wherein the negative pole of Zener diode DQ is connected to the negative pole of controllable silicon D, and the negative pole of direction diode DF is connected to the grid of controllable silicon D.
10. a kind of gapless lightning impulse current generator according to claim 8, is characterized in that: described static state voltage equipoise loop forms by being connected to the positive pole of controllable silicon D and the resistance R T between negative pole; Described dynamic voltage balancing loop is by resistance R S and diode DS is in parallel and serial connection capacitor C S forms, and wherein the positive pole of diode DS is connected to the negative pole of controllable silicon D, and one end of described capacitor C S is connected to the positive pole of controllable silicon D.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549127.XU CN203433011U (en) | 2013-09-05 | 2013-09-05 | A gapless lightning impulse current generating device |
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|---|---|---|---|
| CN201320549127.XU CN203433011U (en) | 2013-09-05 | 2013-09-05 | A gapless lightning impulse current generating device |
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ID=50062039
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454463A (en) * | 2013-09-05 | 2013-12-18 | 国家电网公司 | Gapless lightning impulse current generator |
| CN113030661A (en) * | 2021-03-08 | 2021-06-25 | 深圳供电局有限公司 | Cable buffer layer defect detection equipment and method |
-
2013
- 2013-09-05 CN CN201320549127.XU patent/CN203433011U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454463A (en) * | 2013-09-05 | 2013-12-18 | 国家电网公司 | Gapless lightning impulse current generator |
| CN113030661A (en) * | 2021-03-08 | 2021-06-25 | 深圳供电局有限公司 | Cable buffer layer defect detection equipment and method |
| CN113030661B (en) * | 2021-03-08 | 2024-01-19 | 深圳供电局有限公司 | Cable buffer layer defect detection device and method |
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