CN108957279A - The measurement method of thyristor impulse voltage generator impact thyristor - Google Patents
The measurement method of thyristor impulse voltage generator impact thyristor Download PDFInfo
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- CN108957279A CN108957279A CN201811031791.9A CN201811031791A CN108957279A CN 108957279 A CN108957279 A CN 108957279A CN 201811031791 A CN201811031791 A CN 201811031791A CN 108957279 A CN108957279 A CN 108957279A
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- thyristor
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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
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2601—Apparatus or methods therefor
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Abstract
Disclose a kind of measurement method of thyristor impulse voltage generator impact thyristor, threshold determination loop settings threshold value, no-voltage in thyristor surge voltage generating loop；When polarity of voltage judges that the thyristor surge voltage generating loop is detected as forward voltage in circuit and the amplitude detection circuit detected amplitude data reach threshold value, positive controllable electronic power switch conducting discharges to thyristor surge voltage generating loop；When the polarity of voltage judges that the thyristor surge voltage generating loop is detected as backward voltage in circuit and the amplitude detection circuit detected amplitude data reach threshold value, reversed controllable electronic power switch conducting, discharges to thyristor surge voltage generating loop；After measurement, threshold determination loop settings threshold value, positive controllable electronic power switch and reversely controllable electronic power switch conducting, it is ensured that no-voltage in thyristor surge voltage generating loop.
Description
Technical field
The present invention relates to a kind of thyristor technical field, especially a kind of thyristor impulse voltage generator impacts thyristor
Measurement method.
Background technique
Thyristor grade unit is the minimum unit in high voltage direct current converter valve, before DC transmission engineering puts into operation and equipment
During maintenance, need to carry out routine test to each valve module thyristor grade unit.When the protection for carrying out TCU to thyristor grade
When Trigger Function test, reverse BV test, need to apply a punching at thyristor both ends using impulse voltage generator
Voltage is hit, amplitude is higher.Existing thyristor impulse voltage generator realizes the function of issuing surge voltage, however is trying
During testing, there are thyristor grade TCU protections to be possible to the case where failing.Thyristor grade TCU shielding failure, is applied to thyristor
The surge voltage of two-stage constantly increases, and finally makes thyristor grade by voltage damages, to remain in voltage in thyristor grade anti-
Hit destructive test equipment on impulse voltage generator.
A kind of high-power thyristor forward recovery characteristic based on synthesis loop disclosed in patent document CN105182222 A
Test device includes constant current voltage source, test product thyristor T, diode D, adjustable condenser C, adjustable saturable reactor L, heats back
Road, surge generator and damping circuit；One end of the adjustable condenser C and the anode of constant current voltage source connect, reactor
One end of L1 and the anode of constant current voltage source connect, and the other end of reactor L1 is connect with the anode of diode D, the diode
The cathode of D is connect with one end of one end of adjustable saturable reactor L and surge generator respectively；The adjustable saturable reactor L
The other end connect with damping circuit-test product thyristor T parallel branch after it is in parallel with the surge generator；It is described to damp back
Road-test product thyristor T parallel branch is made of damping circuit and test product thyristor T in parallel, the test product thyristor T and heating
Circuit is in parallel；Test product thyristor T is heated to test junction temperature by the heating circuit；The cathode of the constant current voltage source, adjustable electric
The other end of container C, the cathode of test product thyristor T, the damping resistance of damping circuit and the other end of surge generator connect
Ground.The patent can measure forward recovery characteristic at different temperatures, can reflect the actual condition of converter valve, but the patent exists
To measuring device, thyristor test item, survey crew when to the measurement of thyristor grade protection Trigger Function, reverse BV measurement
There is no safeguard protection, reliability is low, protection/short circuit grounding function is not integrated.
A kind of protection circuit for Switching Power Supply disclosed in patent document CN103872653 A includes operational amplifier
A1, operational amplifier A2, operational amplifier A3, operational amplifier A4, capacitor C, resistance R1, resistance R2, resistance R3, resistance R5,
Resistance R6, resistance R7, resistance R8, resistance R9, variable resistance R10, variable resistance R11 and variable resistance R12, the operation are put
Big device A1 noninverting input, the reverse input end of operational amplifier A2, operational amplifier A3 reverse input end and operation amplifier
The noninverting input of device A4 connects simultaneously, the noninverting input of the reverse input end of operational amplifier A1 and operational amplifier A2 it
Between connect variable resistance R11, connected between the noninverting input of operational amplifier A2 and the negative sense power end of operational amplifier A4
Resistance R2 and resistance are sequentially connected in series between the noninverting input of resistance R3, operational amplifier A1 and the output end of operational amplifier A3
R9 is connected between operational amplifier A3 and the output end of operational amplifier A4；The output end and fortune of the operational amplifier A1
It calculates and connects resistance R7 between the output end of amplifier A2, the output end of operational amplifier A1 and the negative power end of operational amplifier A4
Between connect capacitor C, be also connected between the negative power end of operational amplifier A4 and the noninverting input of operational amplifier A3 variable
It is also connected with resistance R6 between the noninverting input and power supply VCC of resistance R12, operational amplifier A3, resistance R6 is also connected with resistance R2
With the common end of resistance R9；The resistance R5 is connected between power supply VCC and the reverse input end of operational amplifier A4；It is described
Voltage input end Von, variable resistance R10, resistance R1 and operational amplifier A1 reverse input end be sequentially connected in series；It is described
The output end of operational amplifier A3 to be also connected with signal output end Vout, the reverse input end connection signal of operational amplifier A4 defeated
Enter to hold Vin.The patent by detection amplifying circuit to thyristor provide signal so that turn on thyristors and make circuit breaker trip,
Achieve the purpose that protection, but the patent when measuring the measurement of thyristor grade protection Trigger Function, reverse BV to measurement
Equipment, thyristor test item, survey crew do not have safeguard protection, and reliability is low, protection/short circuit grounding function is not integrated.
A kind of thyristor level test method for novel converter valve module disclosed in patent document CN102012481 A includes test
Circuit include AC power source, alternating current filter, disconnecting switch, pressure regulator, isolating transformer, current-limiting resistance, differential concatenation it is exhausted
Edge grid bipolar-type power pipe IGBT, impulse voltage generator and test platform are constituted, in circuit, AC power source and ac filter
Device AF is connected, in order to obtain preferable alternating voltage waveform, AC power source is connected with disconnecting switch, opens to circuit offer
Powered-down road；Power supply is connected by disconnecting switch with pressure regulator, and the output end of pressure regulator is connected with the input terminal of isolating transformer, is led to
The voltage for crossing adjustment pressure regulator, adjusts the output voltage of transformer, and the output end of isolating transformer is connected with current-limiting resistance, effect
The electric current for being limit circuit should not be excessive, to avoid in defective loop other components, the output end of current-limiting resistance and absolutely
Edge grid bipolar-type power pipe IGBT is connected, and the output end of insulated gate bipolar translator power tube IGBT is connected with thyristor grade test product, mesh
Be in order to be turned on and off by control insulated gate bipolar translator power tube IGBT, controlling the electricity for being applied to thyristor both ends
The output end of corrugating, impulse voltage generator is connected with thyristor grade test product, and high pressure terminates at thyristor anode, low-pressure end and
The connection of thyristor cathode, and be grounded, effect is to apply surge voltage to thyristor；The insulated gate of the differential concatenation
The emitter and the second insulated gate that the connection type of bipolar-type power pipe IGBT is the first insulated gate bipolar translator power tube IGBT1 are double
The emitter of polar form power tube IGBT2 connects, and each insulated gate bipolar translator power tube IGBT is parallel with freewheeling diode, works as circuit
Voltage is timing, and the electric current in circuit passes through the first insulated gate bipolar translator power tube IGBT1 and the second insulated gate bipolar power
The parallel diode of pipe IGBT2 forms access, provides forward voltage for thyristor；Electricity when circuit voltage is negative, in circuit
Stream passes through the parallel diode shape of the second insulated gate bipolar translator power tube IGBT2 and the first insulated gate bipolar translator power tube IGBT1
At access, backward voltage is provided for thyristor；Trigger pulse is sent to insulated gate bipolar translator power tube IGBT by test platform,
When trigger pulse is high level, insulated gate bipolar translator power tube IGBT conducting, when trigger pulse is low level, insulated gate is double
Polar form power tube IGBT shutdown；When insulated gate bipolar translator power tube IGBT conducting, circuit is open-minded, and voltage is applied to thyristor sun
Pole, when circuit shutdown, voltage cannot add to thyristor anode.The functional trial of the patent brake tube grade and TE need voltage to send out
Generating apparatus and TE return detection device are completed jointly, but the patent is to the measurement of thyristor grade protection Trigger Function, reverse blocking
There is no a safeguard protection to measuring device, thyristor test item, survey crew when voltage measurement, reliability is low, protection/short circuit grounding
Function is not integrated.
A kind of high power electronic equipment thyristor valve overcurrent test dress disclosed in patent document CN1834670 A
It sets, test loop is composed of high current source, resonant tank and high voltage circuit, charge circuit and protection five part of branch,
High current source is connected with test product valve by heating valve (V1) and is isolated with resonant tank, and resonant tank passes through resonance valve (VS) and examination
Product valve is connected and is isolated with high current source；High current source provides heated current, and resonant tank provides overcurrent and corresponding locking
Voltage, high voltage circuit auxiliary realize the special test requirement of HVDC valve；By the different capacitors, the reactance group that adjust resonant tank
It closes and generates different test current frequencies；The charge circuit uses thyristor constant current pressure regulation full-bridge rectification to fill for resonant capacitance
Electricity, and be isolated by switching (CS2) with resonant tank；The protection branch is used to protect the intercommunication of high voltage and low-voltage circuit
Failure；The secondary monitoring of overcurrent experimental device and regulating system include monitoring unit and adjust unit, pass through layer-stepping distribution
Structure composition mode, multiple and different subsystems is tied, realize to fault-signal, control signal, divide-shut brake signal,
The acquisition and monitoring of status signal and high-speed sampling enabling signal；The secondary monitoring of the overcurrent experimental device and regulating system
Inside by CAN fieldbus realize field level data sharing channel, with meet all overcurrent tests control, monitoring and
Defencive function；Wherein the triggering of thyristor valve and photoelectric monitor part include VBE i.e. valve-based electronics and TE plate i.e. thyristor electronics
Circuit board, described valve-based electronics one end are connect with monitoring unit and adjusting unit respectively, and the other end passes through optical fiber and thyristor electricity
Sub-circuit board connection；Test for flexible AC transmission device valve, the test voltage before and after overcurrent is by filling on capacitor
Piezoelectric voltage provides；Test for voltage direct-current transmission valve needs to be combined with when higher test voltage or to Current Voltage
When particular/special requirement, test voltage just is provided by high voltage circuit；Be additionally provided in the test loop: heating auxiliary valve is used for
Control the heated current of test product valve；Resonant tank auxiliary valve, the overcurrent for controlling the voltage on test product valve and passing through；High electricity
Road auxiliary valve is pushed back, for controlling the ancillary test voltage being added on test product valve；The protection branch uses high-voltage power electronic
Valve is realized.The patent overcurrent test circuit preferably simulate the high-pressure series valve in FACTS and HVDC overcurrent and its
Corresponding voltage, but the patent to thyristor grade protection Trigger Function measurement, reverse BV measure when to measuring device,
Thyristor test item, survey crew do not have safeguard protection, and reliability is low, protection/short circuit grounding function is not integrated.
The present invention proposes a kind of measurement method of thyristor impulse voltage generator impact thyristor in this context
Come realize to thyristor grade carry out TCU protection Trigger Function test, reverse BV test when, reach and test set
The protection purpose of standby, test item, testing crew.
Disclosed above- mentioned information are used only for enhancing the understanding to background of the present invention in the background section, it is thus possible to
Information comprising not constituting the prior art known to a person of ordinary skill in the art in home.
Summary of the invention
In view of the above problems, the present invention implements to provide a kind of measurement of thyristor impulse voltage generator impact thyristor
Method reaches when carrying out the test of protection Trigger Function, the reverse BV test of TCU to thyristor grade to testing equipment, quilt
The protection purpose of test product, testing crew solves existing when thyristor grade TCU is protected in existing thyristor surge voltage measurement
After shield failure, protection problem, measurement method reliability of the invention are lacked to measuring device, thyristor test item, survey crew
Height, measurement accuracy are high.
The purpose of the present invention is be achieved by the following technical programs.
A kind of measurement method step of thyristor impulse voltage generator impact thyristor includes:
In the first step: measurement prepares, the controllable electronic power switch of connection thyristor impulse voltage generator, forward direction,
Reversed controllable electronic power switch and thyristor composition thyristor surge voltage generating loop, threshold determination loop settings threshold value,
Control signal output loop applies control signal to positive controllable electronic power switch and reversed controllable electronic power switch and makes
Positive controllably electronic power switch and reversed controllable electronic power switch conducting, thyristor surge voltage generating loop are interior without electricity
Pressure；
In the second step: measurement starts, and the stopping of control signal output loop is to positive controllable electronic power switch and instead
Apply control signal to controllable electronic power switch, when polarity of voltage judges that circuit is detected the thyristor surge voltage and occurred back
Road is for forward voltage and when the amplitude detection circuit detected amplitude data reach threshold value, and the control signal output loop is to institute
Stating positive controllable electronic power switch application control signal makes the positive controllable electronic power switch conducting to thyristor punching
Voltage generating loop is hit to discharge；When the polarity of voltage judges that circuit detects the thyristor surge voltage generating loop and is
Backward voltage and when the amplitude detection circuit detected amplitude data reach threshold value, the control signal output loop is to reversely may be used
Control electronic power switch applies control signal and makes the reversed controllable electronic power switch conducting, sends out thyristor surge voltage
It discharges in raw circuit；
In third step: after measurement, threshold determination loop settings threshold value, control signal output loop can to forward direction
Control electronic power switch and reversed controllable electronic power switch apply control signal and make positive controllable electronic power switch and anti-
It is connected to controllable electronic power switch, impulse voltage generator returns to the shape of awaiting orders after original state or work before measurement
State, it is ensured that no-voltage in thyristor surge voltage generating loop.
In the measurement method of the thyristor impulse voltage generator impact thyristor, when polarity of voltage judges circuit
The thyristor surge voltage generating loop is detected as forward voltage and the amplitude detection circuit detected amplitude data are not up to
When threshold value, the control signal output loop applies the positive controllable electronic power switch and reversed controllable electronic power switch
Add control signal that the positive controllable electronic power switch and reversed controllable electronic power switch are not turned on, forbids to brilliant lock
Pipe surge voltage generating loop discharges.
In the measurement method of the thyristor impulse voltage generator impact thyristor, when polarity of voltage judges circuit
The thyristor surge voltage generating loop is detected as negative voltage and the amplitude detection circuit detected amplitude data are not up to
When threshold value, the control signal output loop applies the positive controllable electronic power switch and reversed controllable electronic power switch
Add control signal that the positive controllable electronic power switch and reversed controllable electronic power switch are not turned on, forbids to brilliant lock
Pipe surge voltage generating loop discharges.
In the measurement method of the thyristor impulse voltage generator impact thyristor, thyristor surge voltage occurs
It discharges via thyristor impulse voltage generator to thyristor in circuit, wherein the surge voltage of thyristor impulse voltage generator
The wave head time be 2us~60us.
In the measurement method of the thyristor impulse voltage generator impact thyristor, in the second step, first
Moment, control signal output loop apply control signal to the positive controllable electronic power switch and make the positive controllable electric
The conducting of power electronic switch discharges to thyristor surge voltage generating loop, and the second moment controlled signal output loop to anti-
Apply control signal to controllable electronic power switch and make the reversed controllable electronic power switch conducting, electricity is impacted to thyristor
Pressure generating loop discharges, third moment thyristor reverse current zero passage, the 4th moment, the positive controllable electric power electronic cutting
It closes conducting to discharge to thyristor surge voltage generating loop, the 5th moment, controls signal output loop to reversed controllable electric
Power electronic switch applies control signal and makes the reversed controllable electronic power switch conducting, and thyristor surge voltage occurs back
Road is discharged, the 6th moment thyristor reverse current zero passage.
In the measurement method of the thyristor impulse voltage generator impact thyristor, thyristor surge voltage occurs
Device is adjustable thyristor impulse voltage generator, in different voltages, different frequency, different trigger signals or different current peaks
To thyristor impulsive discharge under value.
In the measurement method of the described thyristor impulse voltage generator impact thyristor, polarity of voltage judge circuit with
Amplitude detection circuit sends measurement data to determining whether the measurement data reaches the threshold determination circuit of given threshold,
When measurement data reaches threshold value, the threshold determination circuit issues signal to control signal output loop and makes the control signal
Output loop issues control signal to control positive controllable electronic power switch and/or reversed controllable electronic power switch conducting.
In the measurement method of the thyristor impulse voltage generator impact thyristor, when the amplitude detection circuit
When detected amplitude data reach threshold value, the control signal output loop is to the positive controllable electronic power switch and reversely may be used
Control electronic power switch applies control signal and makes the positive controllable electronic power switch and reversed controllable electronic power switch
Conducting.
In the measurement method of the thyristor impulse voltage generator impact thyristor, the positive controllable electric power electricity
Sub switch and/or reversed controllable electronic power switch are made of 6 concatenated GTR, control signal output loop connection resistance point
Depressor.
In the measurement method of the thyristor impulse voltage generator impact thyristor, thyristor surge voltage occurs
Device is via positive controllable electronic power switch and reversed controllable electronic power switch to thyristor forward and reverse electric discharge at least 3
It is secondary.
The above description is only an overview of the technical scheme of the present invention, in order to make technological means of the invention clearer
Understand, reach the degree that those skilled in the art can be implemented in accordance with the contents of the specification, and in order to allow the present invention
Above and other objects, features and advantages can be more clearly understood, illustrated below with a specific embodiment of the invention
Explanation.
Detailed description of the invention
By reading the detailed description in hereafter preferred embodiment, various other advantages and benefits of the present invention
It will become apparent to those of ordinary skill in the art.Figure of description only for the purpose of illustrating preferred embodiments,
And it is not to be construed as limiting the invention.It should be evident that drawings discussed below is only some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.And throughout the drawings, identical component is presented with like reference characters.
In the accompanying drawings:
Fig. 1 is the measurement method of thyristor impulse voltage generator impact thyristor according to an embodiment of the invention
Step schematic diagram；
Fig. 2 is the measurement method of thyristor impulse voltage generator impact thyristor according to an embodiment of the invention
Logic chart；
Fig. 3 is the measurement method of thyristor impulse voltage generator impact thyristor according to an embodiment of the invention
Measure control schematic diagram.
Below in conjunction with drawings and examples, the present invention will be further explained.
Specific embodiment
The specific embodiment that the present invention will be described in more detail below with reference to accompanying drawings.Although being shown in attached drawing of the invention
Specific embodiment, it being understood, however, that may be realized in various forms the present invention without that should be limited by embodiments set forth here
System.It is to be able to thoroughly understand the present invention on the contrary, providing these embodiments, and can be complete by the scope of the present invention
Be communicated to those skilled in the art.
It should be noted that having used some vocabulary in the specification and claims to censure specific components.Ability
Field technique personnel it would be appreciated that, technical staff may call the same component with different nouns.This specification and right
It is required that not in such a way that the difference of noun is as component is distinguished, but with the difference of component functionally as differentiation
Criterion."comprising" or " comprising " as mentioned throughout the specification and claims are an open language, therefore should be solved
It is interpreted into " including but not limited to ".Specification subsequent descriptions are to implement better embodiment of the invention, so the description be with
For the purpose of the rule of specification, the range that is not intended to limit the invention.Protection scope of the present invention is when the appended right of view
It is required that subject to institute's defender.
In order to facilitate understanding of embodiments of the present invention, further by taking specific embodiment as an example below in conjunction with attached drawing to be solved
Explanation is released, and each attached drawing does not constitute the restriction to the embodiment of the present invention.
In order to better understand, Fig. 1 is the protection according to the thyristor impulse voltage generator of one embodiment of the invention
The structural schematic diagram of device, as shown in Figure 1, a kind of measurement method step packet of thyristor impulse voltage generator impact thyristor
It includes:
In first step S1: measurement prepares, connection thyristor impulse voltage generator, positive controllable electric power electronic cutting
It closes, reversed controllable electronic power switch and thyristor constitute thyristor surge voltage generating loop, threshold determination loop settings threshold
Value, control signal output loop, which applies control signal to positive controllable electronic power switch and reversed controllable electronic power switch, to be made
Positive controllable electronic power switch and reversed controllable electronic power switch conducting are obtained, thyristor surge voltage generating loop is interior without electricity
Pressure；
In second step S2: measurement starting, control signal output loop stop to positive controllable electronic power switch and
Reversed controllable electronic power switch applies control signal, when polarity of voltage judges that circuit is detected the thyristor surge voltage and occurred
Circuit is for forward voltage and when the amplitude detection circuit detected amplitude data reach threshold value, the control signal output loop pair
The positive controllable electronic power switch applies control signal and makes the positive controllable electronic power switch conducting to thyristor
Surge voltage generating loop discharges；When the polarity of voltage judges that the thyristor surge voltage generating loop is detected in circuit
For backward voltage and when the amplitude detection circuit detected amplitude data reach threshold value, the control signal output loop is to reversed
Controllable electronic power switch applies control signal and makes the reversed controllable electronic power switch conducting, to thyristor surge voltage
Generating loop discharges；
In third step S3: after measurement, threshold determination loop settings threshold value controls signal output loop to forward direction
Controllable electronic power switch and reversed controllable electronic power switch apply control signal make positive controllable electronic power switch and
Reversed controllable electronic power switch conducting, impulse voltage generator return to the shape of awaiting orders after original state or work before measurement
State, it is ensured that no-voltage in thyristor surge voltage generating loop.
The measurement method of thyristor impulse voltage generator impact thyristor of the invention is realized to be opened to thyristor grade
When opening up the test of protection Trigger Function, the reverse BV test of TCU, reach the guarantor to testing equipment, test item, testing crew
Eye protection, significantly improve high reliablity and measurement accuracy.
For a further understanding of the present invention, Fig. 2 is thyristor impulse voltage generator according to an embodiment of the invention
The logic chart of the measurement method of thyristor is impacted, as shown in Fig. 2, carrying out threshold value setting when measurement prepares.Control loop pair simultaneously
Positive, reversed controllable electronic power switch applies the control signal such as driving signal, and positive, reversed controllable electric power electronic cutting is led
Logical, this state is the armed state after original state or work before impulse voltage generator work, it is ensured that nothing in entire circuit
Voltage.When measurement starting, control loop stops applying driving signal to positive, reversed controllable electronic power switch.Work as voltage pole
Property judges circuit measure loop for forward voltage and when amplitude detection circuit detected amplitude numerical value reaches threshold value, and control loop is to just
Apply driving signal to controllable electronic power switch, forward direction protects controllable electronic power switch conducting to discharge circuit.When
Polarity of voltage judges that circuit measure loop for backward voltage and when amplitude detection circuit detected amplitude numerical value reaches threshold value, controls back
Road applies driving signal to reversed controllable electronic power switch, and reversed controllable electronic power switch conducting discharges to circuit.
After measurement stops, control loop applies driving signal, positive, reversed controllable electric power to positive, reversed controllable electronic power switch
Electronic switch conducting, this state are the armed state after original state or work before impulse voltage generator work, it is ensured that whole
No-voltage in a circuit.
In the preferred embodiment of the measurement method of thyristor impulse voltage generator impact thyristor of the present invention,
When polarity of voltage judges that the thyristor surge voltage generating loop is detected as forward voltage and the amplitude detection circuit in circuit
When detected amplitude data are not up to threshold value, the control signal output loop is to the positive controllable electronic power switch and reversely
Controllable electronic power switch applies control signal and makes the positive controllable electronic power switch and reversed controllable electric power electronic cutting
Pass is not turned on, and forbids discharging to thyristor surge voltage generating loop.
In the preferred embodiment of the measurement method of thyristor impulse voltage generator impact thyristor of the present invention,
When polarity of voltage judges that the thyristor surge voltage generating loop is detected as negative voltage and the amplitude detection circuit in circuit
When detected amplitude data are not up to threshold value, the control signal output loop is to the positive controllable electronic power switch and reversely
Controllable electronic power switch applies control signal and makes the positive controllable electronic power switch and reversed controllable electric power electronic cutting
Pass is not turned on, and forbids discharging to thyristor surge voltage generating loop.
In the preferred embodiment of the measurement method of thyristor impulse voltage generator impact thyristor of the present invention,
Thyristor surge voltage generating loop discharges via thyristor impulse voltage generator to thyristor, wherein thyristor impact electricity
The wave head time for pressing the surge voltage of generator is 2us~60us.
In the preferred embodiment of the measurement method of thyristor impulse voltage generator impact thyristor of the present invention,
In second step S2, the first moment, control signal output loop applies control letter to the positive controllable electronic power switch
The positive controllable electronic power switch conducting number is made to discharge thyristor surge voltage generating loop, the second moment,
Control signal output loop applies control signal to reversed controllable electronic power switch and makes the reversed controllable electric power electronic cutting
Conducting is closed, is discharged thyristor surge voltage generating loop, third moment thyristor reverse current zero passage, the 4th moment,
The positive controllable electronic power switch conducting discharges to thyristor surge voltage generating loop, the 5th moment, control letter
Number output loop applies control signal to reversed controllable electronic power switch and makes the reversed controllable electronic power switch conducting,
It discharges thyristor surge voltage generating loop, the 6th moment thyristor reverse current zero passage.
In the preferred embodiment of the measurement method of thyristor impulse voltage generator impact thyristor of the present invention,
Thyristor impulse voltage generator is adjustable thyristor impulse voltage generator, in different voltages, different frequency, different touchings
To thyristor impulsive discharge under signalling or different current peaks.
In the preferred embodiment of the measurement method of thyristor impulse voltage generator impact thyristor of the present invention,
Polarity of voltage judges that circuit and amplitude detection circuit send measurement data to determining whether the measurement data reaches given threshold
The threshold determination circuit, when measurement data reaches threshold value, the threshold determination circuit issues signal to control signal output
Circuit makes the control signal output loop issue control signal to control positive controllable electronic power switch and/or reversely may be used
Control electronic power switch conducting.
In the preferred embodiment of the measurement method of thyristor impulse voltage generator impact thyristor of the present invention,
When the amplitude detection circuit detected amplitude data reach threshold value, the control signal output loop is to the positive controllable electric
Power electronic switch and reversed controllable electronic power switch apply control signal and make the positive controllable electronic power switch and anti-
It is connected to controllable electronic power switch.
In the preferred embodiment of the measurement method of thyristor impulse voltage generator impact thyristor of the present invention,
The positive controllable electronic power switch and/or reversed controllable electronic power switch are made of 6 concatenated GTR, control signal
Output loop connects resitstance voltage divider.
In the preferred embodiment of the measurement method of thyristor impulse voltage generator impact thyristor of the present invention,
Thyristor impulse voltage generator via positive controllable electronic power switch and reversed controllable electronic power switch to thyristor just
To with back discharge at least 3 times.
Fig. 3 is the measurement method of thyristor impulse voltage generator impact thyristor according to an embodiment of the invention
Control planning schematic diagram, referring to Fig. 3, polarity of voltage judges that circuit is connected with amplitude detection circuit, and polarity of voltage judges circuit, width
Value measure loop data feed back to control signal output loop, by control signal output loop, and numerical value are uploaded and is shown.Together
When, polarity of voltage judges that circuit and amplitude detection circuit measurement numerical value are transferred to threshold determination circuit.Sentenced by threshold determination circuit
It is fixed whether to reach set threshold value.If reaching threshold value, threshold determination circuit issues signal to control signal output loop.By
It controls signal output loop and issues control signal, control positive controllable electronic power switch or reversed controllable electronic power switch is led
It is logical.If not up to threshold value, threshold determination circuit keeps original state, without any movement.
By present method solves existing thyristor surge voltage measurement in existing for when thyristor grade TCU shielding failure
Afterwards, protection problem is lacked to testing equipment, test item, testing crew.
Although embodiment of the present invention is described in conjunction with attached drawing above, the invention is not limited to above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiment are only schematical, directiveness, rather than restricted
's.Those skilled in the art are under the enlightenment of this specification and in the range for not departing from the claims in the present invention and being protected
In the case where, a variety of forms can also be made, these belong to the column of protection of the invention.
Claims (10)
1. a kind of measurement method of thyristor impulse voltage generator impact thyristor, step include:
In first step (S1): measurement prepares, the controllable electronic power switch of connection thyristor impulse voltage generator, forward direction,
Reversed controllable electronic power switch and thyristor composition thyristor surge voltage generating loop, threshold determination loop settings threshold value,
Control signal output loop applies control signal to positive controllable electronic power switch and reversed controllable electronic power switch and makes
Positive controllably electronic power switch and reversed controllable electronic power switch conducting, thyristor surge voltage generating loop are interior without electricity
Pressure；
In second step (S2): measurement starts, and the stopping of control signal output loop is to positive controllable electronic power switch and instead
Apply control signal to controllable electronic power switch, when polarity of voltage judges that circuit is detected the thyristor surge voltage and occurred back
Road is for forward voltage and when the amplitude detection circuit detected amplitude data reach threshold value, and the control signal output loop is to institute
Stating positive controllable electronic power switch application control signal makes the positive controllable electronic power switch conducting to thyristor punching
Voltage generating loop is hit to discharge；When the polarity of voltage judges that circuit detects the thyristor surge voltage generating loop and is
Backward voltage and when the amplitude detection circuit detected amplitude data reach threshold value, the control signal output loop is to reversely may be used
Control electronic power switch applies control signal and makes the reversed controllable electronic power switch conducting, sends out thyristor surge voltage
It discharges in raw circuit；
In third step (S3): after measurement, threshold determination loop settings threshold value, control signal output loop can to forward direction
Control electronic power switch and reversed controllable electronic power switch apply control signal and make positive controllable electronic power switch and anti-
It is connected to controllable electronic power switch, impulse voltage generator returns to the shape of awaiting orders after original state or work before measurement
State, it is ensured that no-voltage in thyristor surge voltage generating loop.
2. the measurement method of thyristor impulse voltage generator impact thyristor according to claim 1, it is characterised in that:
When polarity of voltage judges that the thyristor surge voltage generating loop is detected as forward voltage and the amplitude detection circuit in circuit
When detected amplitude data are not up to threshold value, the control signal output loop is to the positive controllable electronic power switch and reversely
Controllable electronic power switch applies control signal and makes the positive controllable electronic power switch and reversed controllable electric power electronic cutting
Pass is not turned on, and forbids discharging to thyristor surge voltage generating loop.
3. the measurement method of thyristor impulse voltage generator impact thyristor according to claim 1, it is characterised in that:
When polarity of voltage judges that the thyristor surge voltage generating loop is detected as negative voltage and the amplitude detection circuit in circuit
When detected amplitude data are not up to threshold value, the control signal output loop is to the positive controllable electronic power switch and reversely
Controllable electronic power switch applies control signal and makes the positive controllable electronic power switch and reversed controllable electric power electronic cutting
Pass is not turned on, and forbids discharging to thyristor surge voltage generating loop.
4. the measurement method of thyristor impulse voltage generator impact thyristor according to claim 1, it is characterised in that:
Thyristor surge voltage generating loop discharges via thyristor impulse voltage generator to thyristor, wherein thyristor impact electricity
The wave head time for pressing the surge voltage of generator is 2us~60us.
5. the measurement method of thyristor impulse voltage generator impact thyristor according to claim 1, it is characterised in that:
In second step (S2), the first moment, control signal output loop applies control to the positive controllable electronic power switch
Signal makes the positive controllable electronic power switch conducting discharge thyristor surge voltage generating loop, when second
It carves, control signal output loop applies control signal to reversed controllable electronic power switch and makes the reversed controllable power electronics
Switch conduction discharges to thyristor surge voltage generating loop, third moment thyristor reverse current zero passage, when the 4th
It carves, the positive controllable electronic power switch conducting discharges to thyristor surge voltage generating loop, the 5th moment, control
Signal output loop applies control signal to reversed controllable electronic power switch and the reversed controllable electronic power switch is led
It is logical, it discharges thyristor surge voltage generating loop, the 6th moment thyristor reverse current zero passage.
6. the measurement method of thyristor impulse voltage generator impact thyristor according to claim 1, it is characterised in that:
Thyristor impulse voltage generator is adjustable thyristor impulse voltage generator, in different voltages, different frequency, different touchings
To thyristor impulsive discharge under signalling or different current peaks.
7. the measurement method of thyristor impulse voltage generator impact thyristor according to claim 1, it is characterised in that:
Polarity of voltage judges that circuit and amplitude detection circuit send measurement data to determining whether the measurement data reaches given threshold
The threshold determination circuit, when measurement data reaches threshold value, the threshold determination circuit issues signal to control signal output
Circuit makes the control signal output loop issue control signal to control positive controllable electronic power switch and/or reversely may be used
Control electronic power switch conducting.
8. the measurement method of thyristor impulse voltage generator impact thyristor according to claim 7, it is characterised in that:
When the amplitude detection circuit detected amplitude data reach threshold value, the control signal output loop is to the positive controllable electric
Power electronic switch and reversed controllable electronic power switch apply control signal and make the positive controllable electronic power switch and anti-
It is connected to controllable electronic power switch.
9. the measurement method of thyristor impulse voltage generator impact thyristor according to claim 1, it is characterised in that:
The positive controllable electronic power switch and/or reversed controllable electronic power switch are made of 6 concatenated GTR, control signal
Output loop connects resitstance voltage divider.
10. the measurement method of thyristor impulse voltage generator impact thyristor according to claim 1, feature exist
In: thyristor impulse voltage generator is via positive controllable electronic power switch and reversed controllable electronic power switch to thyristor
Forward and reverse discharges at least 3 times.
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| CN114137380A (en) * | 2021-11-23 | 2022-03-04 | 西安西电电力系统有限公司 | Testing loop and method for on-off characteristic of thyristor in high-temperature state |
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