CN204462211U - Based on the ring ripple test signal generator of electronic switch - Google Patents
Based on the ring ripple test signal generator of electronic switch Download PDFInfo
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- CN204462211U CN204462211U CN201520194085.1U CN201520194085U CN204462211U CN 204462211 U CN204462211 U CN 204462211U CN 201520194085 U CN201520194085 U CN 201520194085U CN 204462211 U CN204462211 U CN 204462211U
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Abstract
The utility model discloses a kind of ring ripple test signal generator based on electronic switch, comprise input circuit, output loop, described input circuit is composed in series by high-voltage power supply, charging resistor and main capacitance, and output loop comprises the output negative electrode, tank coil, filter resistance, resistance selection module and the output positive electrode that are connected in series; Resistance selection module is made up of second switch, the 3rd resistor, the 4th resistor; First switch comprises transwitch, diode, the anode of described transwitch and the negative electrode of diode are all connected to the contact of charging resistor and main capacitance, the negative electrode of described transwitch and the anode of diode are all connected to the contact of tank coil and filter resistance, and a trigger pulse transformer is connected to the control pole of described transwitch.The utility model avoids exists shake when switch closes and switch closes the bad phenomenon that there is gap discharge of closure between front or period of contact contact, and overcomes single tube operating voltage, problem that electric current is lower.
Description
Technical field
The utility model belongs to EMC test and measuring technique technical field, particularly relates to a kind of ring ripple test signal generator based on electronic switch.
Background technology
Ring ripple, as shown in Fig. 1, is a kind of switching due to electrical network and imaginary loading and power circuit fault and insulation breakdown or thunderbolt and senses the typical vibration transient phenomenon produced in low-voltage cable.Usually, this phenomenon appears at supply network (high pressure, middle pressure, low pressure) and controls, in signal wire.
For test signal generator, standard specifies that test signal generator output should have the ability worked in a short-circuit situation.Test signal generator characteristic and parameter
Voltage rising time T1:0.5us ± 30% (open-circuit condition);
T1:< 1us current rise time (short-circuit condition);
Voltage oscillation frequency: 100 kHz soil 10%;
Oscillation frequency is defined as the inverse of the time after first peak value between first and the 3rd zero crossing.This time is the T shown in Fig. 1;
Decay (only referring to that voltage is shown in Fig. 1): 0.4 < Pk2/Pk1 < 1.1,
0.4 < Pk3/Pk2< 0.8，
0.4 < Pk4/Pk3< 0.8，
Other peak value no requirement (NR)s;
Transient state repetition rate: (1 ~ 60)/min,
Output impedance: 12 ohm soil 20% and 30 ohm soil 20% (changeable),
Open-circuit voltage Pk1 value: 250 v to 4 kV (scholar 10%),
Short-circuit current Pk1 value: 333 A scholars 10% during output impedance 12 ohm,
133 A soil 10% during output impedance 30 ohm;
And the phase relation of supply frequency: between 0 to 360 degree scopes, relevant to the phasing degree of equipment under test AC power, error scholar 10 degree;
The polarity of the first semiperiod: positive and negative.
At a high speed, high pressure, high current switching technique are that this type of tests the core technology of generator, determine test generator and whether can produce the waveform meeting standard-required, current existing testing equipment high-voltage switch generally adopts mechanical high-voltage switch, as high-pressure mercury relay or high-pressure vacuum switch.These switch ubiquities to exist when switch closes shake, switch closed before or period of contact gap discharge, switch close electric discharge and can form third-degree burn to contact, affect the problems such as its serviceable life, the existence of these problems makes this kind equipment be difficult to meet the requirement of standard and the reliability of equipment reduces.
Summary of the invention
The utility model object is to provide a kind of ring ripple test signal generator, this ring ripple test signal generator avoids existence shake and switch when switch closes and closes the bad phenomenon that there is gap discharge of closure between front or period of contact contact, and overcome single tube operating voltage, problem that electric current is lower, ensure that in SCR array, each single tube works simultaneously by the mode synchronously triggered, can be widely used in the high-tension current test simulation equipment such as ring ripple test signal generator, lightning surge generator, the experiment results proved validity and reliability of this technology.
For achieving the above object, the technical solution adopted in the utility model is: a kind of ring ripple test signal generator, comprise: input circuit, output loop, described input circuit is composed in series by high-voltage power supply, charging resistor and main capacitance, and described output loop comprises the output negative electrode, tank coil, filter resistance, resistance selection module and the output positive electrode that are connected in series;
The negative pole of described high-voltage power supply is connected by wire with between tank coil and the contact exporting negative electrode with the contact of main capacitance, the contact of described charging resistor and main capacitance and be provided with the first switch between tank coil and the contact of filter resistance;
Described resistance selection module is made up of second switch, the 3rd resistor in parallel, the 4th resistor, the moving contact of this second switch is connected to described output positive electrode, 2 stationary contacts of described second switch are connected respectively to the 3rd resistor, the 4th resistor, and a filter capacitor is connected across between the contact of filter resistance and resistance selection module and tank coil and the contact exporting negative electrode;
Described first switch comprises transwitch, diode, the anode of described transwitch and the negative electrode of diode are all connected to the contact of charging resistor and main capacitance, the negative electrode of described transwitch and the anode of diode are all connected to the contact of tank coil and filter resistance, one trigger pulse transformer is connected to the control pole of described transwitch, and a trigger controller is connected to described trigger pulse transformer.
In technique scheme, further improvement project is as follows:
1., in such scheme, described first switch is high-voltage switch gear.
2. in such scheme, the resistance of described 3rd resistor is 25 ~ 35 Ω, and the resistance of described 4th resistor is 10 ~ 15 Ω.
Because technique scheme is used, the utility model compared with prior art has following advantages:
The utility model ring ripple test signal generator, its switch by semiconductor devices SCR controllable silicon by series-parallel mode, avoid existence shake and switch when switch closes and close the bad phenomenon that there is gap discharge of closure between front or period of contact contact, and overcome single tube operating voltage, the problem that electric current is lower, ensure that in SCR array, each single tube works simultaneously by the mode synchronously triggered, ring ripple test signal generator can be widely used in, in the high-tension current test simulation equipment such as lightning surge generator, the experiment results proved validity and reliability of this technology.
Accompanying drawing explanation
Accompanying drawing 1 is ring ripple schematic diagram;
Accompanying drawing 2 is the utility model ring ripple test signal generator structural representation;
Accompanying drawing 3 is partial structurtes schematic diagram in accompanying drawing 2.
In above accompanying drawing: 1, high-voltage power supply; 2, charging resistor; 3, main capacitance; 4, filter resistance; 5, tank coil; 6, positive electrode is exported; 7, negative electrode is exported; 8, trigger pulse transformer; 9, the first switch; 10, resistance selection module; 11, second switch; 12, the 3rd resistor; 13, the 4th resistor; 14, filter capacitor; 15, transwitch; 16, diode; 17, trigger controller.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment: a kind of ring ripple test signal generator based on electronic switch, comprising: input circuit, output loop, described input circuit is composed in series by high-voltage power supply 1, charging resistor 2 and main capacitance 3,
Described output loop comprises the output negative electrode 7, tank coil 5, filter resistance 4, resistance selection module 10 and the output positive electrode 6 that are connected in series, and the negative pole of described high-voltage power supply 1 is connected by wire with between tank coil 5 and the contact exporting negative electrode 7 with the contact of main capacitance 3;
The first switch 9 is provided with between the contact of described charging resistor 2 and main capacitance 3 and the contact of tank coil 5 and filter resistance 4, described resistance selection module 10 is made up of second switch 11, the 3rd resistor 12 in parallel, the 4th resistor 13, the moving contact of this second switch 11 is connected to described output positive electrode 6, and 2 stationary contacts of described second switch 11 are connected respectively to the 3rd resistor 12, the 4th resistor 13;
One filter capacitor 14 is connected across between the contact of filter resistance 4 and resistance selection module 10 and tank coil 5 and the contact exporting negative electrode 7;
Described first switch 9 comprises transwitch 15, diode 16, the anode of described transwitch 15 and the negative electrode of diode 16 are all connected to the contact of charging resistor 2 and main capacitance 3, the negative electrode of described transwitch 15 and the anode of diode 16 are all connected to the contact of tank coil 5 and filter resistance 4, one trigger pulse transformer 8 is connected to the control pole of described transwitch 15, and a trigger controller 18 is connected to described trigger pulse transformer 17.
Above-mentioned first switch 9 is high-voltage switch gear.
The resistance of above-mentioned 3rd resistor 12 is 30 Ω, and the resistance of described 4th resistor 13 is 12 Ω.
When adopting above-mentioned ring ripple test signal generator, its switch by semiconductor devices SCR by series-parallel mode, avoid existence shake and switch when switch closes and close the bad phenomenon that there is gap discharge of closure between front or period of contact contact, and overcome single tube operating voltage, the problem that electric current is lower, ensure that in SCR array, each single tube works simultaneously by the mode synchronously triggered, ring ripple test signal generator can be widely used in, in the high-tension current test simulation equipment such as lightning surge generator, the experiment results proved validity and reliability of this technology.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (3)
1. the ring ripple test signal generator based on electronic switch, it is characterized in that: comprising: input circuit, output loop, described input circuit is composed in series by high-voltage power supply (1), charging resistor (2) and main capacitance (3), described output loop comprise be connected in series output negative electrode (7), tank coil (5), filter resistance (4), resistance selection module (10) and export positive electrode (6);
The negative pole of described high-voltage power supply (1) is connected by wire with between tank coil (5) and the contact exporting negative electrode (7) with the contact of main capacitance (3), is provided with the first switch (9) between the contact of described charging resistor (2) and main capacitance (3) and the contact of tank coil (5) and filter resistance (4);
Described resistance selection module (10) is made up of second switch (11), the 3rd resistor (12) in parallel, the 4th resistor (13), the moving contact of this second switch (11) is connected to described output positive electrode (6), 2 stationary contacts of described second switch (11) are connected respectively to the 3rd resistor (12), the 4th resistor (13), and a filter capacitor (14) is connected across between the contact of filter resistance (4) and resistance selection module (10) and tank coil (5) and the contact exporting negative electrode (7);
Described first switch (9) comprises transwitch (15), diode (16), the anode of described transwitch (15) and the negative electrode of diode (16) are all connected to the contact of charging resistor (2) and main capacitance (3), the negative electrode of described transwitch (15) and the anode of diode (16) are all connected to the contact of tank coil (5) and filter resistance (4), one trigger pulse transformer (8) is connected to the control pole of described transwitch (15), and a trigger controller (9) is connected to described trigger pulse transformer (8).
2. ring ripple test signal generator according to claim 1, is characterized in that: described first switch (9) is high-voltage switch gear.
3. ring ripple test signal generator according to claim 1, is characterized in that: the resistance of described 3rd resistor (12) is 25 ~ 35 Ω, and the resistance of described 4th resistor (13) is 10 ~ 15 Ω.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520194085.1U CN204462211U (en) | 2015-04-02 | 2015-04-02 | Based on the ring ripple test signal generator of electronic switch |
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| CN201520194085.1U CN204462211U (en) | 2015-04-02 | 2015-04-02 | Based on the ring ripple test signal generator of electronic switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764911A (en) * | 2015-04-02 | 2015-07-08 | 苏州泰思特电子科技有限公司 | Ringing wave test signal generator based on electronic switches |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764911A (en) * | 2015-04-02 | 2015-07-08 | 苏州泰思特电子科技有限公司 | Ringing wave test signal generator based on electronic switches |
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