CN100405682C - Sharp pulse trigger suitable for large power spark gap high voltage switch work - Google Patents
Sharp pulse trigger suitable for large power spark gap high voltage switch work Download PDFInfo
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- CN100405682C CN100405682C CNB2004100111458A CN200410011145A CN100405682C CN 100405682 C CN100405682 C CN 100405682C CN B2004100111458 A CNB2004100111458 A CN B2004100111458A CN 200410011145 A CN200410011145 A CN 200410011145A CN 100405682 C CN100405682 C CN 100405682C
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Abstract
The present invention relates to a sharp pulse trigger device which is suitable for large power spark gap high voltage switch work, which belongs to the technical field of pulses. The sharp pulse trigger device comprises a trigger signal source, a differentiating circuit, a filtration shaping circuit, a signal processing unit, a direct current power supply, a pulse formation circuit, a power amplification circuit, a high voltage pulse transformer and a blocking capacitor, wherein the trigger signal source comprises a control signal pulse generation circuit, a train pulse generation circuit and a single-time pulse generation circuit. The present invention adopts the method of accurately controlling waveform, pulse width, pulse time relay and pulse magnitude to output control signal pulses, single-time pulses or train pulses capable of adjusting frequency, which have steep output waveforms, small time delay difference and stable amplitude value. The present invention can meet the operating requirements of offering auxiliary firing pulses in the high power spark gap high-voltage switches of rotating electrodes. The present invention is also suitable for spark switches used for the fixing gaps of the electrodes.
Description
Technical field
The invention belongs to the pulse technique field, relate to a kind of arrester switch, specifically a kind of spike trigger equipment that is applicable to the work of duty spark gap high-voltage switch gear.
Background technology
At present, in a lot of high-voltage great-current pulse generating units, adopt arrester switch, the spike that the turn-on and turn-off of arrester switch produce by the spike trigger excite shaped electrode between gas, make it to puncture conducting and realize, thereby the pulsewidth of the spike of spike trigger output, amplitude, the accuracy of time delay and accuracy and the reliability that stability directly has influence on arrester switch conducting and turn-off time.
Prior art Tipping Center pulsed flip-flop circuit is made up of trigger signal source, DC power supply, pulse shaping and power amplification circuit, high voltage pulse transformer, coupling capacitance.Trigger signal source is the control signal pulse-generating circuit, and it comprises outer signal control input interface, impedance matching circuit, and is simple in structure, lacks initialize signal is done the circuit that normalization is handled, and antijamming capability is low, and the pulse signal of output is mixed; Because what DC power supply adopted is single phase poaer supply, the ripple coefficient height, spread of voltage makes the pulse signal amplitude of output inconsistent; Power amplification circuit is not provided with protective circuit, and impact resistance is poor; The high voltage pulse transformer unreasonable structure, coupling efficiency is low, and carrying load ability is little.
Summary of the invention
A kind of circuit of exporting the spike signal that The present invention be directed to the existing defective of prior art Tipping Center pulse trigger and design, purpose provides a kind of spike trigger equipment that is applicable to the work of duty spark gap high-voltage switch gear, and the waveform of sharp pulses of spike trigger equipment output is steep, width-adjustable, each impulse time delay difference is little, pulse amplitude stable.
The present invention includes trigger signal source, switch, signal processing unit, DC power supply, pulse shaping and power amplification circuit, high voltage pulse transformer, capacitance.Trigger signal source comprises that control signal pulse-generating circuit, train pulse produce circuit and single pulse produces circuit.Signal processing unit comprises differential circuit, filtering shaping circuit.Control signal pulse-generating circuit, train pulse produce circuit and link to each other with the differential circuit input by switch respectively with single pulse generation circuit output end, the differential circuit output links to each other with the filtering shaping circuit input, and the filtering shaping circuit output links to each other with pulse shaping and power amplification circuit input.
DC power supply comprises three-phase pressurizer, filter, three-phase isolation transformer, rectification circuit, filter capacitor in parallel, resistance leadage circuit, current-limiting resistance and energy storage capacitor.The three-phase output end of voltage stabilizer links to each other with filter input end, filter output links to each other with the three-phase isolation transformer input, the three-phase isolation transformer output links to each other with rectification circuit input end, rectification circuit output end respectively with filter capacitor in parallel, the resistance leadage circuit, the current-limiting resistance input links to each other, current-limiting resistance is connected with energy storage capacitor, filter capacitor output in parallel links to each other with the dc bias circuit of pulse shaping and power amplification circuit, current-limiting resistance links to each other with the high voltage pulse transformer input with the contact of energy storage capacitor, and the high voltage pulse transformer output links to each other with the capacitance input.
The course of work of the present invention: shaped electrode is when making relative rotary motion in the High-Voltage Insulation air cavity of duty spark gap high-voltage switch gear, be arranged at high-accuracy position transducer in the air cavity detect the arrester switch shaped electrode to relative position and spacing, detection signal is by the outer signal control input interface input of control signal pulse-generating circuit, input signal is through impedance matching circuit and buffer circuit filtering, every directly, interference signal is isolated the pulse of output control signal.The pulse train of a certain frequency in 200～800Hz of the duty spark gap high-voltage switch gear work of the suitable rotation electrode of train pulse generation circuit generation, single pulse produces the single pulse that circuit can produce non-jitter, the needs of test synchronization delayed time, detecting electrode discharge position when being fit to the debugging of rotation electrode duty spark gap high-voltage switch gear perhaps are fit to rotation electrode duty spark gap high-voltage switch gear single requirements of one's work.Control signal pulse-generating circuit, train pulse produce circuit or single pulse and produce pulse signal that circuit produces through differential circuit and filtering shaping circuit output pulse width, amplitude, triggering driving pulse that time delay is stable, and differential circuit and filtering shaping circuit play the effect of the circuit time delay of accurate control spike trigger equipment own.Trigger driving pulse and output to the input of pulse shaping circuit and power amplification circuit through signal processing unit, signal processing unit adopts float power to isolate to disturb with strong discharge.
External power supply is input to dc supply input, tentatively reduced the fluctuation of line voltage through the three-phase pressurizer, obtain DC power supply through filter, three-phase isolation transformer, rectification circuit, DC power supply has further reduced the ripple coefficient of power supply through big capacity filter capacitor in parallel, the output galvanic current is pressed, offer the dc bias circuit of pulse shaping circuit and power amplification circuit, guaranteed the stability and the impact resistance of pulse shaping and power amplification circuit bias potential.The triggering driving pulse of signal processing unit output is through the pulse train of pulse formation and power amplification circuit, high voltage pulse transformer, the pulse of capacitance output control signal, single work output pulse or scalable frequency.The primary energy of high voltage pulse transformer is provided by energy storage capacitor, reduces the influence of the fluctuation of load to power supply, reduce the influence of pulsed discharge to power surges, and the energy storage capacitor supply power mode can provide very little output impedance.
The present invention is by taking the method for accurate control impuls width, impulse time delay, pulse amplitude, obtain stable control signal pulse, scalable frequency pulse sequence or single work output pulse, output pulse waveform is steep, each impulse time delay difference is little, pulse amplitude stable.It can satisfy the job requirement that auxiliary firing pulse is provided in the duty spark gap high-voltage switch gear of rotation electrode, also be applicable to the spark switch in fixed electrode gap.
Description of drawings
Accompanying drawing 1 is circuit diagram of the present invention.
Accompanying drawing 2 is circuit structure diagram of the present invention, also is Figure of description.1 is trigger signal source among the figure, 2 control signal pulse-generating circuits, and 3 train pulses produce circuit; 4 single pulse produce circuit, 5 outer signals control input interface, 6 impedance matching circuits; 7 buffer circuits; 8 switches, 9 differential circuits, 10 filtering shaping circuits; 11 signal processing units; 12 DC power supply; 13 three-phase pressurizers; 14 filters, 15 three-phase isolation transformers, 16 rectification circuits; 17 filter capacitors in parallel; 18 resistance leadage circuits, 19 current-limiting resistances, 20 energy storage capacitors; 21 pulse shapings and power amplification circuit; 22 pulse shaping circuits, 23 power amplification circuits, 24 capacitance-resistances absorb protective circuit; 25 balance resistances; 26 diode resistance peak values suppress circuit, 27 high voltage pulse transformers, 28 capacitances.
Embodiment
Three-phase pressurizer 13 in the DC power supply 12 adopts the three-phase pressurizer of high stability, and three-phase isolation transformer 15 is provided with the grouping tap of 2～3 groups of voltage levels, can reach different DC power supply voltage according to different connected modes.Pulse shaping and power amplification circuit 21 comprise that pulse shaping circuit 22, power amplification circuit 23, capacitance-resistance absorb protective circuit 24, balance resistance 25 and diode peak value and suppress circuit 26.The power supply input of pulse shaping circuit 22 is connected with filter capacitor 17 in parallel, the signal that pulse shaping circuit 22 receives from filtering shaping circuit 10, and the output of pulse shaping circuit 22 is connected to the input of power amplification circuit 23; The collector series connection balance resistance 25 of power amplification circuit 23, the other end parallel diode peak value of balance resistance 25 suppresses circuit 26, and the emitter of power amplification circuit 23 also connects capacitance-resistance absorption protective circuit 24; The diode peak value suppresses circuit 26 and is connected with high voltage pulse transformer 27.Pulse shaping and power amplification circuit 21 output parallel diode peak values suppress circuit 26, reduce the inverse peak voltage value; Power amplification circuit 23 collector series connection balance resistances 25 make the concurrent working of a plurality of triodes energy; Power amplification circuit 23 emitters also connect capacitance-resistance absorption protective circuit 24, reduce the impact of surge voltage to triode.Power conversion apparatus employing model is two switch triodes of BUS13A in pulse shaping circuit and the power amplification circuit 21, two in parallel uses of switch triode.
High voltage pulse transformer 27 is selected CD sections heart transformer form for use, elementary line bag and secondary wire bag are with being placed on a certain magnetic post, primary coil skeleton and secondary coil skeleton are placed on the different length position of the same magnetic post of the CD sections heart side by side, secondary coil adopts the cake formula structure of dividing the groove coiling, this structure coupling efficiency height can improve load-carrying ability.Primary is provided with 2～5 groups of taps.Can adjust the pulse amplitude that the spike trigger equipment is exported by the grouping tap and the high voltage pulse transformer 27 elementary grouping taps that change three-phase isolation transformer 15.
Claims (7)
1. spike trigger equipment that is applicable to the work of duty spark gap high-voltage switch gear, comprise trigger signal source (1), DC power supply (12), pulse shaping and power amplification circuit (21), high voltage pulse transformer (27), coupling capacitance (28), it is characterized in that also comprising switch (8), signal processing unit (11); Trigger signal source (1) links to each other with signal processing unit (11) input by switch (8), signal processing unit (11) output links to each other with pulse shaping and power amplification circuit (21) input, DC power supply (12) output links to each other with the dc bias circuit of pulse shaping and power amplification circuit (21), pulse shaping and power amplification circuit (21) output links to each other with high voltage pulse transformer (27) input, and high voltage pulse transformer (27) output links to each other with the capacitance input.
2. according to the spike trigger equipment that is applicable to the work of duty spark gap high-voltage switch gear described in the claim 1, it is characterized in that trigger signal source (1) comprises that control signal pulse-generating circuit (2), train pulse produce circuit (3) and single pulse produces circuit (4); Control signal pulse-generating circuit (2), train pulse produce circuit (3) and are connected with three inputs of switch (8) respectively with the output that single pulse produces circuit (4).
3. according to the spike trigger equipment that is applicable to the work of duty spark gap high-voltage switch gear described in the claim 2, it is characterized in that control signal pulse-generating circuit (2) comprises outer signal control input interface (5), impedance matching circuit (6) and buffer circuit (7); Outer signal control input interface (5), impedance matching circuit (6) and the series connection of buffer circuit (7) order, the other end of buffer circuit (7) is connected with an input of switch (8).
4. according to the spike trigger equipment that is applicable to the work of duty spark gap high-voltage switch gear described in the claim 1, it is characterized in that signal processing unit (11) comprises differential circuit (9) and filtering shaping circuit (10); The input of differential circuit (9) connects the output of switch (8), and output connects the input of filtering shaping circuit (10), and the output of filtering shaping circuit (10) connects the input of pulse shaping and power amplification circuit (21).
5. according to the spike trigger equipment that is applicable to the work of duty spark gap high-voltage switch gear described in claim 1 or 4, it is characterized in that signal processing unit (11) adopts the float power that circuit and strong discharge interference are isolated.
6. according to the spike trigger equipment that is applicable to the work of duty spark gap high-voltage switch gear described in the claim 1, it is characterized in that DC power supply (12) comprises three-phase pressurizer (13), filter (14), three-phase isolation transformer (15), rectification circuit (16), filter capacitor in parallel (17), resistance leadage circuit (18), current-limiting resistance (19) and energy storage capacitor (20); Three-phase pressurizer (13) output links to each other with filter (14) input, filter (14) output links to each other with three-phase isolation transformer (15) input, three-phase isolation transformer (15) output links to each other with rectification circuit (16) input, rectification circuit (16) output respectively with filter capacitor in parallel (17), resistance leadage circuit (18), current-limiting resistance (19) input links to each other, current-limiting resistance (19) is connected with energy storage capacitor (20), filter capacitor (17) output in parallel links to each other with the dc bias circuit of pulse shaping and power amplification circuit (21), and current-limiting resistance (19) links to each other with high voltage pulse transformer (27) input with the contact of energy storage capacitor (20).
7. according to the spike trigger equipment that is applicable to the work of duty spark gap high-voltage switch gear described in the claim 1, it is characterized in that pulse shaping and power amplification circuit (21) comprise that pulse shaping circuit (22), power amplification circuit (23), capacitance-resistance absorb protective circuit (24), balance resistance (25) and diode peak value and suppress circuit (26); The power supply input of pulse shaping circuit (22) is connected with filter capacitor in parallel (17), and pulse shaping circuit (22) receives the signal from filtering shaping circuit (10), and the output of pulse shaping circuit (22) is connected to the input of power amplification circuit (23); The collector series connection balance resistance (25) of power amplification circuit (23), the other end parallel diode peak value of balance resistance (25) suppresses circuit (26); The emitter of power amplification circuit (23) also connects capacitance-resistance absorption protective circuit (24); The diode peak value suppresses circuit (26) and is connected with high voltage pulse transformer (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100111458A CN100405682C (en) | 2004-09-30 | 2004-09-30 | Sharp pulse trigger suitable for large power spark gap high voltage switch work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100111458A CN100405682C (en) | 2004-09-30 | 2004-09-30 | Sharp pulse trigger suitable for large power spark gap high voltage switch work |
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| Publication Number | Publication Date |
|---|---|
| CN1750339A CN1750339A (en) | 2006-03-22 |
| CN100405682C true CN100405682C (en) | 2008-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100111458A Expired - Fee Related CN100405682C (en) | 2004-09-30 | 2004-09-30 | Sharp pulse trigger suitable for large power spark gap high voltage switch work |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103475343B (en) * | 2013-07-15 | 2016-01-20 | 成都千嘉科技有限公司 | A kind of small-signal is anti-interference, amplify and the low-power consumption treatment method of shaping |
| CN110045164A (en) * | 2019-05-14 | 2019-07-23 | 云南电网有限责任公司电力科学研究院 | The impulse voltage generator trigger device of more measuring device precise synchronizations |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4055783A (en) * | 1976-03-01 | 1977-10-25 | Wisconsin Alumni Research Foundation | Spark source with regulation of spark magnitude by control of spark timing |
| JPS63217139A (en) * | 1987-03-03 | 1988-09-09 | Nec Corp | Igniter circuit |
| CN1332895A (en) * | 1998-12-23 | 2002-01-23 | 冠军航天股份有限公司 | Inductive ignition circuit |
| CN1140027C (en) * | 2000-03-03 | 2004-02-25 | 清华大学 | Full-wave/half-wave automatic repeat frequency charging and discharging circuit |
-
2004
- 2004-09-30 CN CNB2004100111458A patent/CN100405682C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4055783A (en) * | 1976-03-01 | 1977-10-25 | Wisconsin Alumni Research Foundation | Spark source with regulation of spark magnitude by control of spark timing |
| JPS63217139A (en) * | 1987-03-03 | 1988-09-09 | Nec Corp | Igniter circuit |
| CN1332895A (en) * | 1998-12-23 | 2002-01-23 | 冠军航天股份有限公司 | Inductive ignition circuit |
| CN1140027C (en) * | 2000-03-03 | 2004-02-25 | 清华大学 | Full-wave/half-wave automatic repeat frequency charging and discharging circuit |
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| CN1750339A (en) | 2006-03-22 |
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Granted publication date: 20080723 Termination date: 20091030 |