CN203117319U - Combination waveform generator - Google Patents
Combination waveform generator Download PDFInfo
- Publication number
- CN203117319U CN203117319U CN 201320019293 CN201320019293U CN203117319U CN 203117319 U CN203117319 U CN 203117319U CN 201320019293 CN201320019293 CN 201320019293 CN 201320019293 U CN201320019293 U CN 201320019293U CN 203117319 U CN203117319 U CN 203117319U
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- pressure forming
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Abstract
The utility model discloses a combination waveform generator, and belongs to a waveform generating device. The device comprises a 0-10kV high-voltage forming circuit, a tank circuit, a high-tension switch, a combination waveform forming network circuit, and a control circuit. After the 0-10kV high-voltage forming circuit charges the tank circuit, the tank circuit is connected with the combination waveform forming network circuit through the high-tension switch to generate combination waves used for test SPD. The control circuit controls switching of the 0-10kV high-voltage forming circuit and the high-tension switch. The combination waveform generator is stable in performance and is safe and reliable.
Description
Technical field
The utility model relates to a kind of 1.2/50 μ s, 8/20 μ s combination wave generator, belongs to waveshape generating device.
Background technology
The fault of the electronic equipment that causes owing to steady-state overvoltage increases day by day, though these faults are very not serious, and only be confined to some parts seldom, but the structure of Low-voltage Electronic equipment is very compact, make the investigation of these faults extremely bother, for satisfying the security needs of product, except equipment being carried out the power frequency high voltage test, also to carry out impulse test and surge immunity experiment to equipment, impulse test comprises surge voltage and impulse current test, generally carry out under the uncharged situation of product to be tested in the impulse current test loop, and suffer the actual conditions of lightning impulse for the lightning protection test product of simulating actual motion, according to the international standard requirement of IEC, carrying out this type of, to test employed dash current source be combination wave generator.
In recent years along with the continuous intensification of the people to low pressure lightning protection problem understanding.The research work that inserts the surge protector (SPD) of low-voltage distribution system more and more is subjected to people's attention; SPD is a kind of new low pressure overvoltage protection; transient state is crossed electricity and the bypass surge current is protected electrical equipment by suppressing; it comprises at least one nonlinear element; its application more and more widely almost spreads all trades and professions.
Stipulate the test of SPD III level composite wave among the IEC62643-1:1998:
The feature of the standard shock wave of combination wave generator is represented with the output voltage under the open-circuit condition and the output current under the short circuit condition.The wavefront time of open-circuit voltage is 1.2us, to half-peak value process time be 50 us, the wavefront time of short-circuit current is 8us, to the half-peak time course be 20us.
Present combination wave generator still remains to be improved in degree of accuracy and security.
The utility model content
Technical problem to be solved in the utility model be at the defective that prior art exists propose that a kind of circuit is simple, stable performance, safe and reliable 1.2/50 μ s, 8/20 μ s combination wave generator.
The utility model adopts following technical scheme for solving above technical matters:
A kind of combination wave generator comprises that 0-10kV high-pressure forming circuit, tank circuit, high-voltage switch gear, composite wave form lattice network and control circuit; Described composite wave form lattice network comprise the inductance of connecting with tank circuit successively and resistance and with the tank circuit parallel resistor, being used to form open-circuit voltage is that 1.2/50 μ s, short-circuit current are the composite wave of 8/20 μ s; After described 0-10kV high-pressure forming circuit charged to tank circuit, tank circuit formed the composite wave that the lattice network discharge generation is used for test surge protector SPD by high-voltage switch gear to composite wave; Described control circuit carries out switch control to 0-10kV high-pressure forming circuit and high-voltage switch gear.
As further prioritization scheme of the present utility model, described 0-10kV high-pressure forming circuit comprises pressure regulator, step-up transformer and high-voltage rectifying device, and outside 220V alternating current produces the continuously adjustable DC voltage of 0-10kV by pressure regulator, step-up transformer and high-voltage rectifying device successively.
As further prioritization scheme of the present utility model, described control circuit is controlled 0-10kV high-pressure forming circuit and high-voltage switch gear by keyswitch and relay, wherein: utilize the mode of relay self-locking to prevent that tank circuit from discharging and recharging simultaneously.
As further prioritization scheme of the present utility model, described high-voltage switch gear is high-pressure vacuum switch.
As further prioritization scheme of the present utility model, described tank circuit is electric capacity.
As further prioritization scheme of the present utility model, described composite wave forms lattice network and comprises an inductance, five resistance, a digital oscilloscope for detection of the residual voltage waveform on the surge protector SPD, the Luo-coil for detection of the current waveform on the surge protector SPD; One end of wherein said first resistance is connected with an end of inductance, the other end of described inductance is connected with the 3rd resistance, the other end of described the 3rd resistance is connected with an end of second resistance, an end of the 4th resistance, an end of Luo-coil respectively, the other end of described the 4th resistance is connected with an end of the 5th resistance, an end of digital oscilloscope respectively, and the other end of described Luo-coil is connected with the end of surge protector SPD; The other end of the other end of the other end of described first resistance, second resistance, the 5th resistance, the other end of digital oscilloscope are connected with the other end of surge protector SPD respectively.
The utility model adopts above technical scheme, compared with prior art has following technique effect:
The utility model circuit design is simple, and stable performance is easy to operate.
Control circuit of the present utility model adopts the mode of relay self-locking to prevent that tank circuit from discharging and recharging simultaneously, the danger of avoiding high pressure to cause.
The utility model adopts and to carry out current sample from the integration type Luo-coil, and precision height, error are little, highly sensitive.
The design of the utility model high-tension circuit, the winding method of employing noninductive resistance, error is little, and antijamming capability is strong.
Description of drawings
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is the circuit theory diagrams of 0-10kV high-pressure forming circuit.
Fig. 3 is the circuit theory diagrams of tank circuit.
Fig. 4 is the circuit theory diagrams that composite wave forms lattice network.
Fig. 5 is the circuit theory diagrams of control circuit.
Embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is done introduction in further detail:
Structured flowchart of the present utility model as shown in Figure 1, comprise that 0-10kV high-pressure forming circuit, tank circuit, high-voltage switch gear, composite wave form lattice network and control circuit, wherein: after described 0-10kV high-pressure forming circuit charged to tank circuit, tank circuit was connected to the combined waveform lattice network to produce the composite wave that is used for test SPD by high-voltage switch gear.Described control circuit carries out switch control to 0-10kV high-pressure forming circuit and high-voltage switch gear.
The circuit theory diagrams of 0-10kV high-pressure forming circuit comprise step-up transformer B2, current-limiting resistance R and the high-voltage rectifying device D of a pressure regulator B1, a 220V:12kV as shown in Figure 2.After the civil power alternating current 220V changes voltage by pressure regulator B1 and step-up transformer B2 successively, tank circuit is charged after being made into direct current by high-voltage rectifying device D again.
The circuit theory diagrams of tank circuit comprise a capacitor C, two resistance R 6, R7 and D.C. voltmeters as shown in Figure 3.Described D.C. voltmeter is for detection of the magnitude of voltage on the capacitor C.
The circuit theory diagrams of composite wave formation lattice network comprise an inductance L, five resistance R 1～R5, a digital oscilloscope and a Luo-coil L1 as shown in Figure 4.Described digital oscilloscope is for detection of the residual voltage waveform on the SPD, and described Luo-coil L1 is for detection of the current waveform on the SPD.
The circuit theory diagrams of control circuit as shown in Figure 5, comprise three keyswitch K1～K3, four relay J 1～J4, two LED and two resistance, wherein: J1-1 is the normally opened contact of J1, the break-make of high-pressure forming circuit is directly controlled in this contact, J2-1 is the normally closed contact of J2, and J3-1 is the normally closed contact of J3, and J4-1 is the normally closed contact of J4, J4-2 is the normally opened contact of J4, and the disconnection of high-voltage switch gear K is directly controlled with closed in this contact.The course of work of the present utility model is as follows, the K switch 1 that at first pushes button, this moment relay J 1 and relay J 2 coil electricity, the J1-1 closure, pilot lamp LED2 is bright, the high-pressure forming circuit conducting, capacitor C begins charging, simultaneously, J2-1 disconnects, pilot lamp LED1 goes out.When the magnitude of voltage of capacitor C reaches required value, K switch 3 pushes button, the coil electricity of relay J 4, J4-1 disconnects, thus relay J 1 coil blackout, J1-1 disconnects, high-pressure forming circuit disconnects, simultaneously, and the J4-2 closure, the energising of control high-pressure vacuum switch is closed, and capacitor C is discharged to the combined waveform lattice network to produce 1.2/50 μ s, the 8/20 μ s composite wave that is used for test SPD.In charging process if when unusual, the K switch 2 that pushes button, relay J 3 coil electricities, J3-1 disconnects, thus relay J 1 coil blackout, J1-1 disconnects, and high-pressure forming circuit disconnects, and stops charging.
Claims (6)
1. a combination wave generator is characterized in that: comprise that 0-10kV high-pressure forming circuit, tank circuit, high-voltage switch gear, composite wave form lattice network and control circuit; It is that 1.2/50 μ s, short-circuit current are the composite wave of 8/20 μ s that described composite wave formation lattice network is used to form open-circuit voltage; After described 0-10kV high-pressure forming circuit charged to tank circuit, tank circuit formed the composite wave that the lattice network discharge generation is used for test surge protector SPD by high-voltage switch gear to composite wave; Described control circuit carries out switch control to 0-10kV high-pressure forming circuit and high-voltage switch gear.
2. combination wave generator according to claim 1, it is characterized in that: described 0-10kV high-pressure forming circuit comprises pressure regulator, step-up transformer and high-voltage rectifying device, and outside 220V alternating current produces the continuously adjustable DC voltage of 0-10kV by pressure regulator, step-up transformer and high-voltage rectifying device successively.
3. combination wave generator according to claim 1, it is characterized in that: described control circuit is by the control of relay realization to 0-10kV high-pressure forming circuit and high-voltage switch gear, wherein: utilize the mode of relay self-locking to prevent that tank circuit from discharging and recharging simultaneously.
4. combination wave generator according to claim 1, it is characterized in that: described high-voltage switch gear is high-pressure vacuum switch.
5. combination wave generator according to claim 1, it is characterized in that: described tank circuit is electric capacity.
6. combination wave generator according to claim 1 is characterized in that: described composite wave forms lattice network and comprises an inductance, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, a digital oscilloscope for detection of the residual voltage waveform on the surge protector SPD, the Luo-coil for detection of the current waveform on the surge protector SPD; One end of wherein said first resistance is connected with an end of inductance, the other end of described inductance is connected with the 3rd resistance, the other end of described the 3rd resistance is connected with an end of second resistance, an end of the 4th resistance, an end of Luo-coil respectively, the other end of described the 4th resistance is connected with an end of the 5th resistance, an end of digital oscilloscope respectively, and the other end of described Luo-coil is connected with the end of surge protector SPD; The other end of the other end of the other end of described first resistance, second resistance, the 5th resistance, the other end of digital oscilloscope are connected with the other end of surge protector SPD respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019293 CN203117319U (en) | 2013-01-15 | 2013-01-15 | Combination waveform generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019293 CN203117319U (en) | 2013-01-15 | 2013-01-15 | Combination waveform generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203117319U true CN203117319U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320019293 Expired - Fee Related CN203117319U (en) | 2013-01-15 | 2013-01-15 | Combination waveform generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN203117319U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954809A (en) * | 2014-03-19 | 2014-07-30 | 南京信息工程大学 | 250/2500 [mu]s operation impact voltage generator |
| CN103954810A (en) * | 2014-04-04 | 2014-07-30 | 南京信息工程大学 | 10/700 muS impulse voltage generator |
| CN104330598A (en) * | 2014-10-17 | 2015-02-04 | 南京信息工程大学 | Lightning damped oscillation wave generator |
| CN104374962A (en) * | 2014-10-24 | 2015-02-25 | 南京信息工程大学 | 10/1,000-microsecond lightning surge generator |
| CN111458543A (en) * | 2020-04-17 | 2020-07-28 | 华北电力大学（保定） | PCB board level test combined wave generator controlled by mercury switch |
-
2013
- 2013-01-15 CN CN 201320019293 patent/CN203117319U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954809A (en) * | 2014-03-19 | 2014-07-30 | 南京信息工程大学 | 250/2500 [mu]s operation impact voltage generator |
| CN103954810A (en) * | 2014-04-04 | 2014-07-30 | 南京信息工程大学 | 10/700 muS impulse voltage generator |
| CN104330598A (en) * | 2014-10-17 | 2015-02-04 | 南京信息工程大学 | Lightning damped oscillation wave generator |
| 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 |
| CN111458543A (en) * | 2020-04-17 | 2020-07-28 | 华北电力大学（保定） | PCB board level test combined wave generator controlled by mercury switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130807 Termination date: 20150115 |
|
| EXPY | Termination of patent right or utility model |