CN204154767U - A kind of 10/1000 μ s lightning impulse generator - Google Patents
A kind of 10/1000 μ s lightning impulse generator Download PDFInfo
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- CN204154767U CN204154767U CN201420621808.7U CN201420621808U CN204154767U CN 204154767 U CN204154767 U CN 204154767U CN 201420621808 U CN201420621808 U CN 201420621808U CN 204154767 U CN204154767 U CN 204154767U
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Abstract
The utility model discloses a kind of 10/1000 μ s lightning impulse generator, comprise the adjustable DC high-voltage power supply, current-limiting circuit and the voltage/current Waveform generating circuit that connect successively, voltage/current Waveform generating circuit comprises the energy capacitance set, discharge switch and the discharge loop network that connect successively, and connect the trigger circuit of discharge switch, the input end of institute's energy capacitance set connects the output terminal of current-limiting circuit, and the output terminal of discharge loop network connects product to be tested; Adjustable DC high-voltage power supply charges to energy capacitance set through current-limiting circuit, trigger circuit controlled discharge switch conduction after charging complete, thus makes discharge loop network produce 10/1000 μ s voltage or current waveform.The utility model can provide 10/1000 μ s waveform SPD on signal side to be carried out to the experiment of harsh grade.
Description
Technical field
The utility model belongs to class signal surge protector field tests, particularly a kind of 10/1000 μ s lightning impulse generator.
Background technology
Thunder and lightning is the one nature electric discharge phenomena of occurring in nature.After thunder and lightning occurs, by the effect of electrostatic induction and electromagnetic induction, in communication line, lightning surge will be formed.For the lightning surge of communication line, in communication line, the normal method of installing SPD on signal side that adopts suppresses at present.The conventional impulse test of SPD on signal side often adopts 8/20 μ s or 1.2/50 μ s waveform.
But for the SPD on signal side that degree of protection is higher, according to IEC61643-21:2000 low tension surge protector the 21st part---the performance requirement of the surge protector of telecommunications and signal network and the code requirement of test method: voltage waveform and the current waveform of the impact deboost test of SPD on signal side adopt 10/1000 μ s, the open-circuit voltage of 1kV or 4kV; 10/1000 μ s, the short-circuit current of 25A or 100A.That is 8/20 conventional μ s or 1.2/50 μ s waveform cannot meet the experiment of harsh grade.
Utility model content
In order to solve the technical matters that above-mentioned background technology is mentioned, the utility model aims to provide a kind of 10/1000 μ s lightning impulse generator, and it can provide 10/1000 μ s waveform SPD on signal side to be carried out to the experiment of harsh grade.
In order to realize above-mentioned technical purpose, the technical solution of the utility model is:
A kind of 10/1000 μ s lightning impulse generator, comprise the adjustable DC high-voltage power supply, current-limiting circuit and the voltage/current Waveform generating circuit that connect successively, described voltage/current Waveform generating circuit comprises the energy capacitance set, discharge switch and the discharge loop network that connect successively, and connect the trigger circuit of discharge switch, the input end of described energy capacitance set connects the output terminal of current-limiting circuit, and the output terminal of discharge loop network connects product to be tested; Described adjustable DC high-voltage power supply charges to energy capacitance set through current-limiting circuit, trigger circuit controlled discharge switch conduction after charging complete, thus makes discharge loop network produce 10/1000 μ s voltage or current waveform.
Wherein, above-mentioned current-limiting circuit comprises the first ~ four resistance, and the output terminal of adjustable DC high-voltage power supply is connected with the input end of energy capacitance set through the first ~ four resistance respectively.
Wherein, above-mentioned voltage/current Waveform generating circuit comprises the first ~ four storage capacitor, the first ~ four controllable silicon, the five ~ seven resistance and inductance, described first ~ four storage capacitor forms energy capacitance set, first ~ four controllable silicon forms discharge switch, and the five ~ seven resistance and inductance form discharge loop network; One end ground connection of described first ~ four storage capacitor, the other end connects one to one the first ~ four silicon controlled anode, first ~ four silicon controlled anode connects one to one the first ~ four resistance, one end of described 5th resistance connects one end of the 6th resistance and ground connection, the inductance of the other end through connecting successively of the 5th resistance is connected with the other end of the 6th resistance after the 7th resistance, and the 5th resistance is connected the first ~ four silicon controlled negative electrode with the common port of inductance.
Wherein, above-mentioned trigger circuit comprise transformer, rectifier bridge, filter capacitor, three terminal regulator, switch and the 8th resistance, the former limit access 220V alternating current of described transformer, its secondary connects the input end of rectifier bridge, rectifier bridge just comprises, negative output terminal, the positive pole of described filter capacitor connects the positive output end of rectifier bridge and the input end of three terminal regulator respectively, the negative pole of filter capacitor connects the negative output terminal of rectifier bridge and the earth terminal of three terminal regulator respectively, the earth terminal of three terminal regulator connects the first ~ four silicon controlled negative electrode, the output terminal of three terminal regulator is connected with the first ~ four silicon controlled gate pole through the 8th resistance.
Wherein, the model of above-mentioned three terminal regulator is 7805.
Adopt the beneficial effect that technique scheme is brought:
Circuit structure of the present utility model is simple, and easy to operate, stable work in work, and the feature having that output voltage is high, electric current is large, meet the harsh rank test of SPD on signal side.Discharge switch in circuit adopts one-way SCR circuit, have discharge off spark, measuring accuracy high, disturb little feature.The structure of energy capacitance set and the discharge switch of one-way SCR, be easy to realize heavy-current discharge, and discharge loop stable performance, reliable operation, not easily cause the damage of discharge switch.The utility model has wide range of applications, and is not only applicable to the test of SPD on signal side, is equally also adapted to the thunderbolt simulation test of other electronic equipment.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present utility model.
Fig. 2 is the principle assumption diagram of adjustable DC high-voltage power supply in the utility model.
Fig. 3 is the structural drawing of the current-limiting circuit in the utility model.
Fig. 4 is the circuit diagram of voltage/current Waveform generating circuit in the utility model.
Fig. 5 is the circuit diagram of trigger circuit in the utility model.
Label declaration: the R1 ~ R8: the first ~ eight resistance, the C1 ~ C4: the first ~ four storage capacitor, the G1 ~ G2: the first ~ four controllable silicon, L: inductance, w: resistor, S: switch.
Embodiment
Below with reference to accompanying drawing, the technical solution of the utility model is described in detail.
System architecture diagram of the present utility model as shown in Figure 1, a kind of 10/1000 μ s lightning impulse generator, comprise the adjustable DC high-voltage power supply, current-limiting circuit and the voltage/current Waveform generating circuit that connect successively, described voltage/current Waveform generating circuit comprises the energy capacitance set, discharge switch and the discharge loop network that connect successively, and connect the trigger circuit of discharge switch, the input end of described energy capacitance set connects the output terminal of current-limiting circuit, and the output terminal of discharge loop network connects product to be tested; Described adjustable DC high-voltage power supply charges to energy capacitance set through current-limiting circuit, trigger circuit controlled discharge switch conduction after charging complete, when product to be tested end is opened a way, discharge loop network produces 10/1000 μ s voltage waveform, when product to be tested terminal shortcircuit, discharge loop network produces 10/1000 μ s current waveform.
The principle assumption diagram of adjustable DC high-voltage power supply in the utility model as shown in Figure 2, the external+24V direct supply of high-voltage power supply module and resistor w, export the voltage of 0 ~ 5kV.The size of output voltage is changed by the position of adjusting resistance device w tap.The internal circuit of high-voltage power supply module adopts pulsed high-frequency oscillatory circuit and voltage-multiplying circuit, is adjusted the dutycycle of pulse signal by resistor w, changes the value of output voltage.
The structural drawing of the current-limiting circuit as shown in Figure 3 in the utility model, comprises the first ~ four resistance, i.e. R1 ~ R4, and the output terminal of adjustable DC high-voltage power supply is connected with the input end of energy capacitance set through R1 ~ R4 respectively.The resistance of R1 ~ R4 is 100k Ω, and power is 100W.
The structural drawing of the current-limiting circuit as shown in Figure 4 in the utility model, voltage/current Waveform generating circuit comprises the first ~ four storage capacitor C1 ~ C4, the first ~ four controllable silicon G1 ~ G4, the five ~ seven resistance R5 ~ R7 and inductance L, described first ~ four storage capacitor forms energy capacitance set, first ~ four controllable silicon forms discharge switch, and the five ~ seven resistance and inductance form discharge loop network; One end ground connection of described first ~ four storage capacitor, the other end connects one to one the first ~ four silicon controlled anode, first ~ four silicon controlled anode connects one to one the first ~ four resistance, one end of described 5th resistance connects one end of the 6th resistance and ground connection, the inductance of the other end through connecting successively of the 5th resistance is connected with the other end of the 6th resistance after the 7th resistance, and the 5th resistance is connected the first ~ four silicon controlled negative electrode with the common port of inductance.Utilize the waveform that this Waveform generating circuit produces, its wave head time
half time to peak
c is the total capacitance of energy capacitance set, C=C1+C2+C3+C4, the open-circuit voltage of output
u
0for the charging voltage value of energy capacitance set.The value of C1, C2, C3, C4 electric capacity is 2.5 μ F/10kV.The resistance of R5 is 2.2k Ω, R6 be 11 Ω, R7 is 150 Ω, and the power of their resistance is 100W.The On The Current Value of G1, G2, G3, G4 is 100A.
The circuit diagram of trigger circuit in the utility model as shown in Figure 5, trigger circuit comprise transformer, rectifier bridge, filter capacitor, three terminal regulator 7805, switch S and the 8th resistance R8, the former limit access 220V alternating current of described transformer, its secondary connects the input end of rectifier bridge, rectifier bridge just comprises, negative output terminal, the positive pole of described filter capacitor connects the positive output end of rectifier bridge and the input end of 7805 respectively, the negative pole of filter capacitor connects the negative output terminal of rectifier bridge and the earth terminal of 7805 respectively, the earth terminal of 7805 connects the negative electrode of G1 ~ G4, the output terminal of 7805 through R8 with G1 ~ G4 gate pole be connected.When energy capacitance set charging complete, the switch S of closed trigger circuit, trigger circuit to G1 ~ G4 input gate signal, thus produce waveform.
In sum, the waveform that the utility model produces, meeting wave front time is 10 μ s, half time to peak is 1000 μ s, and peak error is ± 10%, and wave front time error is+100% ,-10%, half peak value time error is ± 20%, and maximum open circuit voltage is 5kV, and maximum short circuit current is 500A.
Above embodiment is only and technological thought of the present utility model is described; protection domain of the present utility model can not be limited with this; every technological thought according to the utility model proposes, any change that technical scheme basis is done, all falls within the utility model protection domain.
Claims (5)
1. a μ s lightning impulse generator, it is characterized in that: comprise the adjustable DC high-voltage power supply, current-limiting circuit and the voltage/current Waveform generating circuit that connect successively, described voltage/current Waveform generating circuit comprises the energy capacitance set, discharge switch and the discharge loop network that connect successively, and connect the trigger circuit of discharge switch, the input end of described energy capacitance set connects the output terminal of current-limiting circuit, and the output terminal of discharge loop network connects product to be tested; Described adjustable DC high-voltage power supply charges to energy capacitance set through current-limiting circuit, trigger circuit controlled discharge switch conduction after charging complete, thus makes discharge loop network produce 10/1000 μ s voltage or current waveform.
2. a kind of 10/1000 μ s lightning impulse generator according to claim 1, it is characterized in that: described current-limiting circuit comprises the first ~ four resistance, the output terminal of adjustable DC high-voltage power supply is connected with the input end of energy capacitance set through the first ~ four resistance respectively.
3. a kind of 10/1000 μ s lightning impulse generator according to claim 2, it is characterized in that: described voltage/current Waveform generating circuit comprises the first ~ four storage capacitor, the first ~ four controllable silicon, the five ~ seven resistance and inductance, described first ~ four storage capacitor forms energy capacitance set, first ~ four controllable silicon forms discharge switch, and the five ~ seven resistance and inductance form discharge loop network; One end ground connection of described first ~ four storage capacitor, the other end connects one to one the first ~ four silicon controlled anode, first ~ four silicon controlled anode connects one to one the first ~ four resistance, one end of described 5th resistance connects one end of the 6th resistance and ground connection, the inductance of the other end through connecting successively of the 5th resistance is connected with the other end of the 6th resistance after the 7th resistance, and the 5th resistance is connected the first ~ four silicon controlled negative electrode with the common port of inductance.
4. a kind of 10/1000 μ s lightning impulse generator according to claim 3, it is characterized in that: described trigger circuit comprise transformer, rectifier bridge, filter capacitor, three terminal regulator, switch and the 8th resistance, the former limit access 220V alternating current of described transformer, its secondary connects the input end of rectifier bridge, rectifier bridge just comprises, negative output terminal, the positive pole of described filter capacitor connects the positive output end of rectifier bridge and the input end of three terminal regulator respectively, the negative pole of filter capacitor connects the negative output terminal of rectifier bridge and the earth terminal of three terminal regulator respectively, the earth terminal of three terminal regulator connects the first ~ four silicon controlled negative electrode, the output terminal of three terminal regulator is connected with the first ~ four silicon controlled gate pole through the 8th resistance.
5. a kind of 10/1000 μ s lightning impulse generator according to claim 4, is characterized in that: the model of described three terminal regulator is 7805.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420621808.7U CN204154767U (en) | 2014-10-24 | 2014-10-24 | A kind of 10/1000 μ s lightning impulse generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420621808.7U CN204154767U (en) | 2014-10-24 | 2014-10-24 | A kind of 10/1000 μ s lightning impulse generator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374962A (en) * | 2014-10-24 | 2015-02-25 | 南京信息工程大学 | 10/1,000-microsecond lightning surge generator |
| CN106814683A (en) * | 2016-12-08 | 2017-06-09 | 国网北京市电力公司 | Waveform generator |
| CN109813951A (en) * | 2018-12-26 | 2019-05-28 | 中国科学院上海应用物理研究所 | A kind of current sensor frequency response bandwidth measuring apparatus and method |
| CN114325369A (en) * | 2021-12-17 | 2022-04-12 | 宁波公牛电器有限公司 | Impact current generating circuit and impact testing system for intelligent single-fire switch |
-
2014
- 2014-10-24 CN CN201420621808.7U patent/CN204154767U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374962A (en) * | 2014-10-24 | 2015-02-25 | 南京信息工程大学 | 10/1,000-microsecond lightning surge generator |
| CN104374962B (en) * | 2014-10-24 | 2017-04-19 | 南京信息工程大学 | 10/1,000-microsecond lightning surge generator |
| CN106814683A (en) * | 2016-12-08 | 2017-06-09 | 国网北京市电力公司 | Waveform generator |
| CN109813951A (en) * | 2018-12-26 | 2019-05-28 | 中国科学院上海应用物理研究所 | A kind of current sensor frequency response bandwidth measuring apparatus and method |
| CN114325369A (en) * | 2021-12-17 | 2022-04-12 | 宁波公牛电器有限公司 | Impact current generating circuit and impact testing system for intelligent single-fire switch |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20161024 |
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| CF01 | Termination of patent right due to non-payment of annual fee |