CN110361571A - A kind of high-voltage pulse signal generator and its circuit and Calculation Methods of Circuit Parameters - Google Patents
A kind of high-voltage pulse signal generator and its circuit and Calculation Methods of Circuit Parameters Download PDFInfo
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- CN110361571A CN110361571A CN201910691297.3A CN201910691297A CN110361571A CN 110361571 A CN110361571 A CN 110361571A CN 201910691297 A CN201910691297 A CN 201910691297A CN 110361571 A CN110361571 A CN 110361571A
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- 238000004364 calculation method Methods 0.000 title claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims abstract description 87
- 238000012360 testing method Methods 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims 2
- 239000011888 foil Substances 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
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- 238000009826 distribution Methods 0.000 abstract description 4
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- 238000013461 design Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004088 simulation Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
- H03K3/57—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a semiconductor device
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Abstract
The invention discloses a kind of high-voltage pulse signal generator and its circuit and Calculation Methods of Circuit Parameters, resistance is adjusted through wave head by charging resistor using high voltage direct current source to charge to main capacitance, resistance is adjusted using main capacitance, wave head, wave rear adjusts resistance, primary energy capacitor and controllable trigger switch and constitutes primary microsecond pulse circuit, the generation adjustable microsecond pulse wave of wavefront；Secondary nanosecond pulse output loop is constituted using primary energy capacitor, steepness switch, secondary storage capacitor and wave regulating resistor, exports high-voltage nanosecond pulse wave；According to load entrance capacitance size, suitable harmonic capacitor, the frequency domain distribution of adjustment output pulse are selected；This circuit output pulse spectral range is big, and voltage is high, and converter power transformer head end voltage pulse frequency spectrum range is big, and is distributed more uniform.And the height of output voltage amplitude, the high-voltage pulse generator suitable for transformer time domain measurement external characteristics can be controlled by input.
Description
Technical field
The present invention relates to high-voltage nanosecond pulse generating devices, and in particular to a kind of high-voltage pulse signal generator and its circuit
And Calculation Methods of Circuit Parameters.
Background technique
China has a vast territory, and energy resources and load center are unevenly distributed weighing apparatus, and extra-high voltage direct-current transmission long transmission distance is held
Amount is big, and it is the effective means for distributing China's energy resources rationally that loss is low.Converter station is as in extra-high voltage DC transmission system
Key components can suffer from different types of overvoltage intrusion under normal or fault condition, its safety and stability fortune
Row is the core technology of extra-high voltage direct-current transmission.The overvoltage of converter station calculates and whether Insulation Coordination designs rationally by direct shadow
The economy and safety of entire engineering are rung, therefore the accurate overvoltage level for calculating extra-high voltage direct-current system has important meaning
Justice.
At present for the research of converter station overvoltage, EMTP or EMTDC software is mostly used to carry out Digital Simulation, therefore number
The broadband properties that can the equipment equivalent model that used in emulation accurately reflect equipment will directly affect the standard of simulation analysis result
True property.Converter power transformer has a significant impact to simulation result as the core equipment in converter station, the accuracy of wideband model,
It is the emphasis in the modeling of converter station over-voltage simulation.Due to being very different under the low frequency response and high frequency of converter power transformer, because
This necessary wideband model for establishing converter power transformer.
Mainly there is physical model method based on Electromagnetic Calculation and based on frequency for the broaden method of frequency modeling of the change of current at present
The modeling that domain, time domain external characteristics measure.Physical modeling method based on Electromagnetic Calculation does not account for device parameter under high frequency
Frequency change effect, therefore high frequency drag response error is larger.And it is being asked based on frequency domain measurement external characteristics modeling rule there are following
Topic: first is that using the accuracy problem of low-power level signal measuring device frequency response: due to used Network Analyzer, impedance
Analyzer constant power is limited, and current high-frequency test output power is very low, and output sweep voltage amplitude is only 1V, is far below equipment
Can normal working voltage, measurement result accurately reflect equipment and work normally lower response characteristic, rare research at present, there is also
Some queries.Second is that measurement result is measured when using Network Analyzer or impedance analyzer measurement large scale equipment frequency characteristic
Lead effect is larger and increases with frequency, and error significantly increases, and evades although can use test method, effect still cannot not
Know.And it is based on time domain measurement external characteristics modeling, although test voltage can be much higher than frequency domain method, test port needs one
Export the sufficiently wide high-voltage nanosecond pulse generator of pulse frequency domain.Since extra-high voltage converter becomes, (change of current becomes converter power transformer letter
Claiming) entrance capacitance is very big, and for ± 800kV the change of current used by converter station becomes test parameter, converter power transformer entrance capacitance is about
For 10.4nF.For traditional millimicrosecond pulse generator when carrying bulky capacitor load, converter power transformer entrance potential frequency domain is small,
Voltage magnitude is low, still lacks the high-voltage nanosecond pulse signal generator for being directed to UHV converter transformer at present.
Summary of the invention
The purpose of the present invention is to provide a kind of high-voltage pulse signal generator and its circuit and Calculation Methods of Circuit Parameters,
With overcome the deficiencies in the prior art.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of high-voltage pulse signal generation circuit, including resistance R1, controllable trigger switch S1, capacitor C1, resistance R2, resistance
R3, capacitor C2, steepness switch S2, capacitor C3, capacitor C4With resistance R4；
Resistance R1One termination high voltage direct current source anode, resistance R1The controllable trigger switch S of another termination1High-voltage end and
Capacitor C1One end, controllable trigger switch S1High pressure end interface be connected to trigger controller, controllable trigger switch S1Low pressure termination
Ground, trigger controller other end ground connection, capacitor C1The other end and resistance R2One end and resistance R3End thereof contacts；Resistance R2's
The other end and steepness switch S2One end and capacitor C2One end connection, steepness switch S2The other end and capacitor C3End thereof contacts,
Capacitor C3The other end and capacitor C4One end and resistance R4End thereof contacts, capacitor C3The other end be output end, with output cable core
Line connection, capacitor C2, resistance R3The other end, resistance R4The other end and capacitor C4The other end be grounded.
Further, controllable trigger switch S1Using jet plasma trigger switch.
Further, capacitor C2Using ceramic condenser.
Further, steepness switch S2Using gas switch.
Further, capacitor C3Using noninductive ceramic condenser.
Further, resistance R4Using metal glaze resistance.
Further, capacitor C1Using metal thin film capacitor.
A kind of high-voltage pulse signal generator, the high-voltage pulse signal generator include that electricity occurs for high-voltage pulse signal
Road.
Each loop parameter calculation method in circuit occurs for a kind of high-voltage pulse signal, comprising the following steps:
Primary microsecond pulse circuit wave front time Tf:
Tf=3.24R2C1C2/(C1+C2)
Primary microsecond pulse circuit wave rear time Tt:
Tt=0.693R3(C1+C2)
Secondary nanosecond pulse output loop cycle of oscillation T:
Wherein L is the equivalent stray inductance of secondary nanosecond pulse output loop；
Secondary nanosecond pulse output loop vibrates half-life period t:
Wherein L is secondary nanosecond pulse output loop equivalent inductance.
Further, according to converter power transformer to be tested factory parameter, no-load test is carried out to converter power transformer to be tested
The power frequency equivalent circuit of converter power transformer is obtained with short-circuit test, will be changed with what converter power transformer entrance equivalent capacity was brought into
Converter power transformer low frequency equivalent model can be obtained in the power frequency equivalent circuit of convertor transformer, it is low using obtained converter power transformer
Frequency equivalent model verify each loop parameter whether meet demand.
Compared with prior art, the invention has the following beneficial technical effects:
Circuit occurs for a kind of high-voltage pulse signal of the present invention, adjusts electricity through wave head by charging resistor using high voltage direct current source
It hinders and charges to main capacitance, adjust resistance using main capacitance, wave head, wave rear adjusts resistance, primary energy capacitor and controllable triggering are opened
It closes and constitutes primary microsecond pulse circuit, generate the adjustable microsecond pulse wave of wavefront；It is switched using primary energy capacitor, steepness, is secondary
Grade storage capacitor and wave regulating resistor constitute secondary nanosecond pulse output loop, high-voltage nanosecond pulse wave are exported, using two-stage pulse
Circuit, carrying large capacity load-bearing capacity is strong, this circuit can select suitable harmonic capacitor according to load entrance capacitance size,
The frequency domain distribution of adjustment output pulse can be that ± 800kV converter power transformer primary side generates frequency domain in 50Hz to 1MHz in load,
Voltage magnitude is above the Nanosecond pulse signal of 100V, this circuit output pulse spectral range is big, and voltage is high, and converter power transformer is first
It holds voltage pulse spectral range big, and is distributed more uniform；And the height of output voltage amplitude can be controlled by input, it is applicable in
It is lower than the high-voltage pulse generator of 12nF transformer time domain measurement external characteristics in entrance capacitance.
Using this circuit structure, in transformer load entrance capacitance 10.4nF, primary microsecond pulse circuit uses energy
Enough make converter power transformer head end voltage pulse frequency spectrum range big, and be distributed it is more uniform, in 1MHz, frequency domain voltage still above
100V。
Further, controllable trigger switch conducting used in primary microsecond pulse circuit is high-efficient, trigger switch conducting
Voltage can be from 0 to 60kV, and the steepness switch breakdown voltage adjustable extent in secondary nanosecond pulse output loop is big, by using
Controllable trigger switch and steepness switch, impulse generator output voltage adjustable extent are big.
Each loop parameter calculation method in circuit occurs for a kind of high-voltage pulse signal, by being obtained according to converter power transformer to be measured
To the change of current be lower frequency equivalent model, by the validity of PSPICE simulating, verifying modelling, can obtain and low frequency model
Each loop parameter in circuit occurs for corresponding high-voltage pulse signal in wide frequency range, and voltage magnitude reaches design requirement, fits
For different capabilities, the transformer time domain external characteristics of different voltages grade is measured, applied widely.
Detailed description of the invention
Fig. 1 is Nanosecond pulse signal generator topological structure schematic diagram of the present invention.
Fig. 2 is the emulation of test ± 800kV converter power transformer equivalent model PSPICE converter power transformer input port voltage
As a result.
Fig. 3 is test ± 800kV converter power transformer equivalent model PSPICE converter power transformer input port voltage waveform width
Frequency characterization result.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
As shown in Figure 1, circuit, including resistance R occur for a kind of high-voltage pulse signal1, controllable trigger switch S1, capacitor C1, electricity
Hinder R2, resistance R3, capacitor C2, steepness switch S2, capacitor C3, capacitor C4With resistance R4；
Resistance R1One termination high voltage direct current source anode, resistance R1The controllable trigger switch S of another termination1High-voltage end and
Capacitor C1One end, controllable trigger switch S1High pressure end interface be connected to trigger controller, controllable trigger switch S1Low pressure termination
Ground, trigger controller other end ground connection, capacitor C1The other end and resistance R2One end and resistance R3End thereof contacts；Resistance R2's
The other end and steepness switch S2One end and capacitor C2One end connection, steepness switch S2The other end and capacitor C3End thereof contacts,
Capacitor C3The other end and capacitor C4One end and resistance R4End thereof contacts, capacitor C3The other end be output end, with output cable core
Line connection, capacitor C2, resistance R3The other end, resistance R4The other end and capacitor C4The other end be grounded；Output cable core
Line is connected with converter power transformer.
Resistance R1As charging resistor, capacitor C1As main capacitance, resistance R2Resistance, resistance R are adjusted as wave head3As
Wave rear adjusts resistance, capacitor C2As primary energy capacitor, capacitor C3As secondary storage capacitor, capacitor C4As harmonic capacitor,
Resistance R4As wave regulating resistor, resistance is adjusted through wave head by charging resistor using high voltage direct current source and is charged to main capacitance, is utilized
Main capacitance, wave head adjust resistance, wave rear adjusts resistance, primary energy capacitor and controllable trigger switch and constitutes primary microsecond pulse time
Road generates the adjustable microsecond pulse wave of wavefront；Utilize primary energy capacitor, steepness switch, secondary storage capacitor and wave regulating resistor
Secondary nanosecond pulse output loop is constituted, high-voltage nanosecond pulse wave is exported；According to load entrance capacitance size, suitable adjust is selected
Wave capacitor, the frequency domain distribution of adjustment output pulse；Finally Devices to test is connected to using high-pressure coaxial cable output.
Resistance R1, for high voltage direct current source to main capacitance charging current limiter, charge power is limited, electric current in charge circuit is avoided
More than DC source maximum value.
Capacitor C1, resistance R2, resistance R3, capacitor C2With controllable trigger switch S1Constitute primary microsecond pulse circuit；
Capacitor C1, energy storage for prime, it is desirable that capacitance is big, and direct current withstanding voltage is high, capacitor C1Using metallic film
Capacitor.
Controllable trigger switch S1Using jet plasma trigger switch；
Control trigger is used to control the conducting opportunity of controllable trigger switch；
Resistance R2, for adjusting primary output microsecond pulse wave front time.
Resistance R3, for adjusting the primary output microsecond pulse wave wave rear time.
Capacitor C2, it is desirable that capacitance is larger, and noninductive as far as possible, capacitor C2Using ceramic condenser；
Capacitor C2, capacitor C3, capacitor C4, resistance R4With steepness switch S2Constitute secondary nanosecond pulse output loop；
Steepness switch S2, for triggering secondary nanosecond pulse output loop, steepness switch S2Using gas switch, triggering side
Formula is inside to fill sulfur hexafluoride or nitrogen, clearance distance can from the slightly non-uniform field that ball-sphere gap is constituted in triggering, gas switch
It adjusts, to guarantee that conduction delay is as small as possible, and self-breakdown voltage output area is as big as possible.
Capacitor C3, for adjusting the steepness and low frequency component of output pulse, capacitor C3Using noninductive ceramic condenser.
Capacitor C4, for adjusting the steepness of pulse output, weaken the oscillation of output pulse amplitude-frequency characteristic in high frequency, so that
It is gently uniform to export pulse amplitude-frequency characteristic.
Resistance R4With capacitor C2, capacitor C3, capacitor C4And the equivalent inductance in secondary nanosecond pulse output loop constitutes and owes resistance
Buddhist nun's oscillation circuit, resistance R4Using metal glaze resistance；
The voltage wave of generation is delivered to Devices to test by output cable CoaxialCable.
Circuit occurs by above-mentioned high-voltage pulse signal, when input direct-current voltage is 60kV, output carrying ± 800kV is straight
The change of current is flowed, output pulse frequency spectrum range is big, and voltage is high.When transformer load (entrance capacitance 10.4nF), converter power transformer head end
Voltage pulse spectral range is big, and distribution is more uniform, and in 1MHz, frequency domain voltage is still above 100V.
Controllable trigger switch conducting used in primary microsecond pulse circuit is high-efficient, and trigger switch conducting voltage can
From 0 to 60kV, steepness switch breakdown voltage adjustable extent is big in secondary nanosecond pulse output loop；Controllable touching is used by optimization
Hair switch and steepness switch, impulse generator output voltage adjustable extent of the present invention are big；It calculates output and is used for different appearances
Amount, the transformer time domain external characteristics measurement of different voltages grade are applied widely.
DCPOWER is external high voltage direct current source in Fig. 1, and CoaxialCable is output cable.
Each loop parameter in circuit occurs for high-voltage pulse signal to calculate, is tested report according to converter power transformer to be measured first
It accuses, obtains the change of current and be lower frequency equivalent model；Circuit occurs based on above-mentioned high-voltage pulse signal, rationally designs circuit parameter, passes through
The validity of PSPICE simulating, verifying modelling considers error of the low frequency model in wide frequency range used in design,
It should there are surpluses when designing circuit parameter, it is ensured that frequency domain, voltage magnitude reach design requirement；Finally based on the circuit of design
Parameter chooses suitable equipment, comprising modules, the Nanosecond pulse signal generator of structuring.
The present embodiment contains high-voltage pulse for design, assemble to obtain the measurement of ± 800kV converter power transformer time domain external characteristics
For high-voltage pulse signal each loop parameter calculating side in circuit occurs for the high-voltage pulse signal generator of signal generating circuit
Method, using following steps:
Step 1): according to converter power transformer to be tested dispatch from the factory parameter, to converter power transformer to be tested carry out no-load test and
Short-circuit test obtains the power frequency equivalent circuit of converter power transformer, and obtains change of current transformation in conjunction with converter power transformer entrance capacitance parameter
Device low frequency equivalent model；Specifically, by the power frequency etc. for the converter power transformer brought into converter power transformer entrance equivalent capacity
Converter power transformer low frequency equivalent model can be obtained in effect circuit；
Step 2): it is as follows that each circuit parameter calculation in circuit occurs for high-voltage pulse signal:
Primary microsecond pulse circuit wave front time calculation formula:
Tf=3.24R2C1C2/(C1+C2)
Wherein C1For main capacitance；C2For primary energy capacitor；R2For wavefront modification resistance；
Primary microsecond pulse circuit wave rear time calculation formula:
Tt=0.693R3(C1+C2)
Wherein C1For main capacitance；C2For primary energy capacitor；R3Resistance is adjusted for wave rear；
Secondary nanosecond pulse output loop cycle of oscillation calculation formula:
Wherein L is the equivalent stray inductance of secondary nanosecond pulse output loop；C2For primary energy capacitor；C3For secondary energy storage
Capacitor；C4For harmonic capacitor；
Secondary nanosecond pulse output loop vibrates half-life period calculation formula:
R4For wave regulating resistor.
Simulation model is built in PSPICE, and is passed through using converter power transformer low frequency equivalent model obtained in step 1)
Simulation software PSPICE verify above-mentioned high-voltage pulse signal occur in circuit each loop parameter whether meet demand.
Embodiment
Using the high-voltage pulse signal for UHV converter transformer that circuit occurs containing above-mentioned high-voltage pulse signal
Generator, for the emulation of ± 800kV converter power transformer equivalent model PSPICE converter power transformer input port voltage, as a result such as
Shown in Fig. 2, shown waveform is that the change of current becomes input port voltage waveform, it can be seen that converter power transformer enters to hold voltage waveform peak value to exist
25kV or so, rising edge of a pulse 200ns, impulse hunting period 250ns.
Using the high-voltage pulse signal for UHV converter transformer that circuit occurs containing above-mentioned high-voltage pulse signal
Generator, for ± 800kV converter power transformer equivalent model PSPICE converter power transformer input port voltage waveform amplitude-frequency characteristic
Test, as a result as shown in Figure 3, it can be seen that converter power transformer enters to hold voltage wave spectrum analysis amplitude, and peak value is at low frequency
3000V or so, in 1MHz, for voltage magnitude still above 100V, the spectral range of output voltage waveforms is big, and voltage magnitude is high.
The invention discloses a kind of high-voltage pulse signals, and circuit occurs, and prepares a kind of receiving containing the circuit according to the circuit
Second pulse signal generator, measures for UHV converter transformer time domain external characteristics, which passes through
Circuit topological structure is improved and optimizes, output frequency domain is wide when carrying ± 800kV extra-high voltage converter becomes, and amplitude is high, frequency under 1MHz
Domain voltage is more than 100V, and amplitude-frequency characteristic is gently uniform.
Claims (10)
1. circuit occurs for a kind of high-voltage pulse signal, which is characterized in that including resistance R1, controllable trigger switch S1, capacitor C1, electricity
Hinder R2, resistance R3, capacitor C2, steepness switch S2, capacitor C3, capacitor C4With resistance R4；
Resistance R1One termination high voltage direct current source anode, resistance R1The controllable trigger switch S of another termination1High-voltage end and capacitor C1
One end, controllable trigger switch S1High pressure end interface be connected to trigger controller, controllable trigger switch S1Low-pressure end ground connection, touching
Send out controller other end ground connection, capacitor C1The other end and resistance R2One end and resistance R3End thereof contacts；Resistance R2The other end
With steepness switch S2One end and capacitor C2One end connection, steepness switch S2The other end and capacitor C3End thereof contacts, capacitor C3
The other end and capacitor C4One end and resistance R4End thereof contacts, capacitor C3The other end be output end, with output cable core wire connect
It connects, capacitor C2, resistance R3The other end, resistance R4The other end and capacitor C4The other end be grounded.
2. circuit occurs for a kind of high-voltage pulse signal according to claim 1, which is characterized in that controllable trigger switch S1It adopts
With jet plasma trigger switch.
3. circuit occurs for a kind of high-voltage pulse signal according to claim 1, which is characterized in that capacitor C2Using ceramic electrical
Hold.
4. circuit occurs for a kind of high-voltage pulse signal according to claim 1, which is characterized in that steepness switch S2Using gas
Body switch.
5. circuit occurs for a kind of high-voltage pulse signal according to claim 1, which is characterized in that capacitor C3Using noninductive
Ceramic condenser.
6. circuit occurs for a kind of high-voltage pulse signal according to claim 1, which is characterized in that resistance R4Using metal glass
Glass glaze resistance.
7. circuit occurs for a kind of high-voltage pulse signal according to claim 1, which is characterized in that capacitor C1Using metal foil
Membrane capacitance.
8. a kind of high-voltage pulse signal generator, which is characterized in that the high-voltage pulse signal generator includes claim 1 institute
It states high-voltage pulse signal and circuit occurs.
9. one kind is for each loop parameter calculation method in circuit described in claim 1, which comprises the following steps:
Primary microsecond pulse circuit wave front time Tf:
Tf=3.24R2C1C2/(C1+C2)
Primary microsecond pulse circuit wave rear time Tt:
Tt=0.693R3(C1+C2)
Secondary nanosecond pulse output loop cycle of oscillation T:
Wherein L is the equivalent stray inductance of secondary nanosecond pulse output loop；
Secondary nanosecond pulse output loop vibrates half-life period t:
Wherein L is secondary nanosecond pulse output loop equivalent inductance.
10. each loop parameter calculation method according to claim 9, which is characterized in that according to converter power transformer to be tested
Factory parameter, carries out no-load test to converter power transformer to be tested and short-circuit test obtains the equivalent electricity of power frequency of converter power transformer
The change of current will can be obtained in the power frequency equivalent circuit for the converter power transformer brought into converter power transformer entrance equivalent capacity in road
Transformer low frequency equivalent model verifies whether each loop parameter meets need using obtained converter power transformer low frequency equivalent model
It asks.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113655274A (en) * | 2021-08-30 | 2021-11-16 | 西安交通大学 | System and method for detecting transient transmission performance of combined electronic transformer |
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