CN108872857A - A kind of generator scene mixing pressure test device and method - Google Patents
A kind of generator scene mixing pressure test device and method Download PDFInfo
- Publication number
- CN108872857A CN108872857A CN201810832034.5A CN201810832034A CN108872857A CN 108872857 A CN108872857 A CN 108872857A CN 201810832034 A CN201810832034 A CN 201810832034A CN 108872857 A CN108872857 A CN 108872857A
- Authority
- CN
- China
- Prior art keywords
- voltage
- direct current
- generator
- test
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 138
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000007787 solid Substances 0.000 claims abstract description 34
- 230000001105 regulatory effect Effects 0.000 claims description 41
- 230000010355 oscillation Effects 0.000 claims description 30
- 230000005611 electricity Effects 0.000 claims description 16
- 230000033228 biological regulation Effects 0.000 claims description 11
- 238000010998 test method Methods 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 210000001367 artery Anatomy 0.000 claims description 4
- 210000003462 vein Anatomy 0.000 claims description 4
- 208000028659 discharge Diseases 0.000 claims 2
- 238000002474 experimental method Methods 0.000 abstract description 4
- 238000004804 winding Methods 0.000 description 22
- 239000003990 capacitor Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- 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
- G01R31/34—Testing dynamo-electric machines
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
A kind of generator scene mixing pressure test device and method, belong to generator discharge experimental rig field, it is characterised in that：It is switched including controller, inverter, high voltage direct current generator, current-limiting resistance, reactor, alternating current-direct current divider and solid high-voltage；Controller is electrically connected with solid high-voltage switch respectively；Solid high-voltage is switched to be electrically connected with the output end of current-limiting resistance；Inverter and high voltage direct current generator are provided with ground connection；Alternating current-direct current divider is electrically connected with reactor；Controller is electrically connected with alternating current-direct current divider.The pressure test of exchange is realized by introducing attenuation oscillasion impulse, high voltage direct current generator is set to replace series resonance AC-testing supply on the basis of serving as DC experiment power supply, the solid high-voltage switch of volume very little is introduced simultaneously, reduction sets the standby volume eliminated in ac voltage withstanding equipment, reduce testing crew burden, the AC power source for potentially acting as partial discharge test improves the safety of equipment.
Description
Technical field
The invention patent belongs to generator discharge test method field more particularly to a kind of for generator field test
Direct current/attenuation oscillasion impulse mixing pressure test device and method.
Background technique
In power domain, generator need to periodically carry out the examination of the shelf depreciation under DC break down voltage and ac voltage withstanding and alternating voltage
It tests, needs when test to complete by direct current and alternating voltage generating device, wherein high direct voltage is produced by high voltage direct current generator
It is raw, and ac voltage withstanding is tested, then is generated using series resonance pressure test apparatus or ultralow frequency.Since generator windings insulate
For capacitive load, therefore DC break down voltage equipment volume, weight are less than ac voltage withstanding equipment, and DC break down voltage equipment is by high-frequency rectification electricity
Source, high frequency transformer and high voltage direct current generator composition, and series resonance test device is by variable-frequency power sources, exciting transformer, humorous
Shake reactor composition, refers to and weight is all bigger.In electric discharge is had a try and tested, testing crew need to be by the tester of AC and DC
Device is lifted to generator outlet position, and physical strength is not only seriously expended, but also be easy to cause personal injury.
Summary of the invention
The present invention is intended to provide a kind of experimental rig for gathering DC break down voltage and ac voltage withstanding, and examination is completed using the device
The method tested.
Generator scene of the present invention mixes pressure test device, including controller, inverter, high direct voltage hair
Raw device, current-limiting resistance, reactor, alternating current-direct current divider and solid high-voltage switch；The controller, inverter, high direct voltage
Generator, current-limiting resistance, reactor and alternating current-direct current divider are sequentially connected electrically；The controller switchs phase with solid high-voltage respectively
Electrical connection；One end of the solid high-voltage switch and the output end of current-limiting resistance are electrically connected, other end ground connection；The inversion electricity
Source and high voltage direct current generator are provided with ground connection；One end of the alternating current-direct current divider is electrically connected with reactor, the other end
Ground connection；The controller is electrically connected with alternating current-direct current divider.
Generator scene of the present invention mixes pressure test device, and the alternating current-direct current divider includes being sequentially connected electrically
High-voltage arm and low-voltage arm；The controller is connected to alternating current-direct current voltage divider signal output end.
Generator scene of the present invention mixes pressure test device, and the high voltage direct current generator includes successively being electrically connected
Intermediate-frequency transformer, voltage doubling rectifing circuit and the high-voltage measuring circuit connect.
Generator scene of the present invention mixes pressure test device, and the inverter includes three phase full bridge rectification mould
Block, DC-DC voltage regulating module, full-bridge inverting module, single-chip microcontroller, voltage feedback module, pulse width modulation module, protection circuit and inversion
Drive module；The three phase full bridge rectification module, DC-DC voltage regulating module and full-bridge inverting module are sequentially connected electrically；The voltage
Feedback module, pulse width modulation module, protection circuit and inversion drive module are sequentially connected electrically；The pulse width modulation module and DC-
DC voltage regulating module is electrically connected；The inversion drive module is electrically connected with full-bridge inverting module；The voltage feedback module, arteries and veins
Wide modulation module, protection circuit and inversion drive module are electrically connected with single-item machine；The full-bridge inverting module and it is aforementioned in
Frequency power transformer is electrically connected；The voltage feedback module is electrically connected with aforementioned high-voltage measuring circuit；The single-chip microcontroller with it is aforementioned
Controller is electrically connected.
The test method of mixing pressure test device in generator scene of the present invention, includes the following steps：
1）Output end by generator respectively with reactor and controller is electrically connected；Generator subject phase stator winding is shorted
It is electrically connected respectively with reactor and divider afterwards, non-subject phase stator winding is shorted ground connection；By generator charge for remittance ring lead-out wire
It is electrically connected with controller；
2）DC break down voltage test model, attenuation oscillasion impulse ac voltage withstanding test model or alternating current-direct current mixing are selected by controller
Test model, and test parameters setting is carried out by controller, then start to test by controller triggering test device；
3）Select the test process of DC break down voltage test model for：Solid high-voltage switch is in an off state always at this time, inversion
Power supply and high voltage direct current generator enter working condition, and three-phase 380V alternating current has been converted to line by three phase full bridge rectification module
The direct current of wave, is converted to stable direct current while direct current is using DC-DC voltage regulating module pressure regulation, inverter is by direct current
High-frequency alternating current is converted to, high-frequency alternating current is converted to high voltage direct current electricity output by voltage doubling rectifing circuit；Single-chip microcontroller passes through arteries and veins
Wide modulation module adjusts the duty ratio of DC-DC voltage regulating module output pulse width modulating wave by inverter, increases duty ratio, this
When DC-DC voltage regulating module output secondary voltage rise, make high voltage direct current generator output voltage rise；When boosting to record point,
After voltage and leakage current are steady, click and save key, save the voltage and leakage value；After test, reversed DC- is reduced
The duty ratio of DC voltage regulating module output modulating wave makes voltage be gradually decreased to zero point, off-test；
For the levels of precision for improving generator windings leakage current measurement, solid high-voltage switch, reactor and divider pair are excluded
Influence of the ground leakage current to test result can connect micro- between alternating current-direct current pressure divider high pressure end and generator subject winding
Pacify table, and reads microampere reading；
4）Select the test process of attenuation oscillasion impulse ac voltage withstanding test model for：Select the test of attenuation oscillasion impulse test model
Process is：The mode includes DC charging stage and damped oscillation discharge regime.In the DC charging stage, solid high-voltage switch
Always it is in an off state, inverter and high voltage direct current generator enter working condition, and three-phase 380V alternating current passes through three-phase
Full-bridge rectification module is converted to the direct current of ripple, is converted to while direct current is using DC-DC voltage regulating module pressure regulation flat
Direct current is converted to high-frequency alternating current by steady direct current, inverter, and high-frequency alternating current is converted to high pressure by voltage doubling rectifing circuit
Direct current electricity output；DC-DC voltage regulating module output pulse width modulating wave is adjusted by pulse width modulation module by inverter single-chip microcontroller
Duty ratio, increase duty ratio, at this time DC-DC voltage regulating module output secondary voltage rise, export high voltage direct current generator
Voltage rises；After reaching nominal attenuation oscillation wave test voltage, solid high-voltage switch is converted on state from off state, this
When resonance reactor, generator and loop stray resistance form RLC underdamped oscillation circuit, produce the voltage of damped oscillation
Waveform carries out generator alternating current pressure resistance and shelf depreciation test；Major loop damped oscillation waveform terminates in a few seconds, completes decaying
Oscillation wave test；
5）Select the test process of alternating current-direct current bulk testing mode for：The mode includes DC break down voltage stage, DC voltage adjustment
Stage and damped oscillation discharge regime.
Generator scene of the present invention mixes applied voltage test method, step 2）The test parameters includes：Direct current is resistance to
Press includes test voltage, overvoltage protection voltage and overcurrent protection electric current under test model；Include under attenuation oscillasion impulse test model
Test voltage and protection voltage.
Generator scene of the present invention mixes applied voltage test method, and the test parameters setting and high direct voltage occur
The boost process of device includes being manually operated and being automatically brought into operation two ways.
Generator scene mixing pressure test device and method of the present invention, lead on the basis of existing DC break down voltage
The pressure test for introducing attenuation oscillasion impulse to realize exchange is crossed, makes high voltage direct current generator on the basis for serving as DC experiment power supply
It is upper to replace series resonance AC-testing supply, DC break down voltage test is carried out to stator water-cooling generator using high voltage direct current generator
When, high voltage direct current generator can shield generator unit stator charge for remittance circular current, prevent from influencing to measure, while introducing volume very little
Solid high-voltage switch substantially reduces to set and eliminates exchange instead of the variable-frequency power sources and exciting transformer in ac voltage withstanding equipment
Standby volume in pressure-resistant equipment reduces testing crew burden, potentially acts as the AC power source of partial discharge test, improve equipment
Safety.
Detailed description of the invention
Fig. 1 is that generator scene of the present invention mixes pressure test device circuit diagram；
Fig. 2 is the structural block diagram of inverter of the present invention and high voltage direct current generator.
Specific embodiment
Pressure test device is mixed to generator scene of the present invention with reference to the accompanying drawings and embodiments and method carries out
It is described in detail.
Embodiment one
Generator field test of the present invention mixes pressurizing device, is not only suitable for stator winding water-cooled generator, is also applied for
Stator winding air-cooled generator.
Generator scene of the present invention mixes pressure test device, as shown in Figure 1, include controller, inverter,
High voltage direct current generator, current-limiting resistance, reactor, alternating current-direct current divider and solid high-voltage switch；The controller, inversion electricity
Source, high voltage direct current generator, current-limiting resistance, reactor and alternating current-direct current divider are sequentially connected electrically；The controller is respectively and solid
State high-voltage switch gear is electrically connected；One end of the solid high-voltage switch and the output end of current-limiting resistance are electrically connected, another termination
Ground；The inverter and high voltage direct current generator are provided with ground connection；One end of the alternating current-direct current divider and reactor phase
Electrical connection, other end ground connection；The controller is electrically connected with alternating current-direct current divider.The alternating current-direct current divider includes successively electric
The high-voltage arm and low-voltage arm of connection；The controller is connected to the output of the alternating current-direct current voltage divider signal between high-voltage arm and low-voltage arm
End.
Generator scene of the present invention mixes pressure test device, as shown in Fig. 2, the high voltage direct current generator packet
Include the intermediate-frequency transformer being sequentially connected electrically, voltage doubling rectifing circuit and high-voltage measuring circuit.The inverter includes three phase full bridge
Rectification module, DC-DC voltage regulating module, full-bridge inverting module, single-chip microcontroller, voltage feedback module, pulse width modulation module, protection circuit
With inversion drive module；The three phase full bridge rectification module, DC-DC voltage regulating module and full-bridge inverting module are sequentially connected electrically；Institute
Voltage feedback module, pulse width modulation module, protection circuit and inversion drive module is stated to be sequentially connected electrically；The pulse width modulation module
It is electrically connected with DC-DC voltage regulating module；The inversion drive module is electrically connected with full-bridge inverting module；The Voltage Feedback mould
Block, pulse width modulation module, protection circuit and inversion drive module are electrically connected with single-item machine；The full-bridge inverting module is with before
Intermediate-frequency transformer is stated to be electrically connected；The voltage feedback module is electrically connected with aforementioned high-voltage measuring circuit；The single-chip microcontroller with
Aforementioned controllers are electrically connected.
The test method of mixing pressure test device in generator scene of the present invention, includes the following steps：
1）Output end by generator respectively with reactor and controller is electrically connected；Generator subject phase stator winding is shorted
It is electrically connected respectively with reactor and divider afterwards, non-subject phase stator winding is shorted ground connection；By generator charge for remittance ring lead-out wire
It is electrically connected with controller；
2）DC break down voltage test model, attenuation oscillasion impulse ac voltage withstanding test model or alternating current-direct current mixing are selected by controller
Test model, and test parameters setting is carried out by controller, then start to test by controller triggering test device；
3）Select the test process of DC break down voltage test model for：Solid high-voltage switch is in an off state always at this time, inversion
Power supply and high voltage direct current generator enter working condition, and three-phase 380V alternating current has been converted to line by three phase full bridge rectification module
The direct current of wave, is converted to stable direct current while direct current is using DC-DC voltage regulating module pressure regulation, inverter is by direct current
High-frequency alternating current is converted to, high-frequency alternating current is converted to high voltage direct current electricity output by voltage doubling rectifing circuit；Single-chip microcontroller passes through arteries and veins
Wide modulation module adjusts the duty ratio of DC-DC voltage regulating module output pulse width modulating wave by inverter, increases duty ratio, this
When DC-DC voltage regulating module output secondary voltage rise, make high voltage direct current generator output voltage rise；When boosting to record point,
After voltage and leakage current are steady, click and save key, save the voltage and leakage value；After test, reversed DC- is reduced
The duty ratio of DC voltage regulating module output modulating wave makes voltage be gradually decreased to zero point, off-test；
4）Select the test process of attenuation oscillasion impulse ac voltage withstanding test model for：Select the test of attenuation oscillasion impulse test model
Process is：The mode includes DC charging stage and damped oscillation discharge regime.In the DC charging stage, solid high-voltage switch
Always it is in an off state, inverter and high voltage direct current generator enter working condition, and three-phase 380V alternating current passes through three-phase
Full-bridge rectification module is converted to the direct current of ripple, is converted to while direct current is using DC-DC voltage regulating module pressure regulation flat
Direct current is converted to high-frequency alternating current by steady direct current, inverter, and high-frequency alternating current is converted to high pressure by voltage doubling rectifing circuit
Direct current electricity output；DC-DC voltage regulating module output pulse width modulating wave is adjusted by pulse width modulation module by inverter single-chip microcontroller
Duty ratio, increase duty ratio, at this time DC-DC voltage regulating module output secondary voltage rise, export high voltage direct current generator
Voltage rises；After reaching nominal attenuation oscillation wave test voltage, solid high-voltage switch is converted on state from off state, this
When resonance reactor, generator and loop stray resistance form RLC underdamped oscillation circuit, produce the voltage of damped oscillation
Waveform carries out generator alternating current pressure resistance and shelf depreciation test；Major loop damped oscillation waveform terminates in a few seconds, completes decaying
Oscillation wave test；
5）Select the test process of alternating current-direct current bulk testing mode for：The mode includes DC break down voltage stage, DC voltage adjustment
Stage and damped oscillation discharge regime.
In the DC break down voltage stage, solid high-voltage switch is in an off state always at this time, and high voltage direct current generator is through limiting
Leakage resistance and reactor mutually pressurize to generator unit stator winding subject.Inverter and high voltage direct current generator enter work shape
State, three-phase 380V alternating current are converted to the direct current of ripple by three phase full bridge rectification module, and direct current is using DC-DC tune
Stable direct current is converted to while die block pressure regulation, direct current is converted to high-frequency alternating current, high-frequency alternating current warp by inverter
It crosses voltage doubling rectifing circuit and is converted to high voltage direct current electricity output；Single-chip microcontroller adjusts DC-DC voltage regulating module by pulse width modulation module
Duty ratio increases duty ratio, and DC-DC voltage regulating module output voltage rises at this time, makes on high voltage direct current generator output voltage
It rises；When boosting to record point, after voltage and leakage current are steady, click and save key, save the voltage and leakage value；Direct current
The pressure-resistant stage terminates.
In the DC voltage adjusting stage, since ac voltage withstanding test voltage is lower than DC break down voltage value, it is therefore desirable to reduce
Generator windings subject phase voltage is adjusted to attenuation oscillasion impulse voltage needed for testing by high voltage direct current generator output voltage.It is inverse
Variable power source and high voltage direct current generator enter working condition, and three-phase 380V alternating current has been converted to by three phase full bridge rectification module
The direct current of ripple is converted to stable direct current while direct current is using DC-DC voltage regulating module pressure regulation, and inverter will be straight
Circulation is changed to high-frequency alternating current, and high-frequency alternating current is converted to high voltage direct current electricity output by voltage doubling rectifing circuit；Single-chip microcontroller passes through
Pulse width modulation module adjusts the duty ratio of DC-DC voltage regulating module, reduces duty ratio, at this time DC-DC voltage regulating module output voltage
Decline declines high voltage direct current generator output voltage；It is tested when generator windings subject phase voltage is adjusted to attenuation oscillasion impulse
After required voltage, the DC voltage adjusting stage terminates.
In damped oscillation discharge regime.Solid high-voltage switch is converted on state from off state, at this time reactor, hair
Motor and loop stray resistance form RLC underdamped oscillation circuit, produce the voltage waveform of damped oscillation, carry out generator
Ac voltage withstanding test；Major loop damped oscillation waveform terminates in a few seconds, completes attenuation oscillasion impulse test.
Embodiment two
DC break down voltage test is carried out to generator, it is as follows using method when manual mode：
1）User selects DC break down voltage test model by the operation interface of controller, selects Manual test mode and Selection experiment
Voltage, overvoltage protection voltage and overcurrent protection electric current.Solid high-voltage switch can automatically switch to off-state at this time.
2）The beginning test button on controller is clicked, inverter and high voltage direct current generator enter work shape at this time
State, three-phase 380V alternating current are converted to the direct current of ripple by three phase full bridge rectification module, and direct current is using DC-DC tune
Stable direct current is converted to while die block pressure regulation, direct current is converted to high-frequency alternating current, high-frequency alternating current warp by inverter
It crosses voltage doubling rectifing circuit and is converted to high voltage direct current electricity output.
3）Under manual mode, testing crew passes through pulse width modulation module through single-chip microcontroller by the adjusting pressuring knob at controller interface
The duty ratio for adjusting DC-DC voltage regulating module, gradually rises duty ratio, and DC-DC voltage regulating module output voltage is gradually increasing at this time,
High voltage direct current generator output voltage is gradually increasing.
4）Point is recorded comprising multiple specific voltages in DC break down voltage test, when testing crew boosts to record point,
It after voltage and leakage current are steady, click and saves key, equipment can automatically save the voltage and leakage value.Accurately to control examination
Product can be timed in the residence time of voltage record point by timer.
5）After testing crew record finishes all record points, reversely turning knob adjusting DC-DC voltage regulating module makes voltage
It is gradually decreased to zero point, off-test.
Embodiment three
DC break down voltage test is carried out to generator, it is as follows using method when automatic mode：
1）User selects DC break down voltage test model by controller operation interface, select automated manner and Selection experiment voltage,
Overvoltage protection voltage and overcurrent protection electric current.Solid high-voltage switch can automatically switch to off-state at this time.
2）The beginning test button on controller is clicked, inverter and high voltage direct current generator enter work shape at this time
State, three-phase 380V alternating current are converted to the direct current of ripple by three phase full bridge rectification module, and direct current is using DC-DC tune
Stable direct current is converted to while die block pressure regulation, direct current is converted to high-frequency alternating current, high-frequency alternating current warp by inverter
It crosses voltage doubling rectifing circuit and is converted to high voltage direct current electricity output.
3）Under automatic mode, testing crew is not necessarily to manual adjustment output voltage, and inverter will automatically adjust DC-DC duty
Than high voltage direct current generator output voltage is gradually increasing.
4）Point is recorded comprising multiple specific voltages in DC break down voltage test, when voltage automatically ramps up to record point, examination
Personnel are tested after voltage and leakage current are steady, clicks and saves key, equipment can automatically save the voltage and leakage value.Then it presses
Boost key, continues automatic lifting voltage.For accurately control test product voltage record point residence time, can by timer into
Row timing.
5）After testing crew record finishes all record points, reversely turning knob makes voltage be gradually decreased to zero point, test
Terminate.
Example IV
Ac voltage withstanding test is carried out to generator, it is as follows using method when manual mode：
1）User selects attenuation oscillasion impulse test model by controller operation interface, selects manual mode, and test voltage is arranged
And protection voltage.
2）Solid high-voltage is switched into access circuit closed solid high-voltage switch, at this time inverter and high voltage direct current generator
Into working condition, three-phase 380V alternating current is converted to the direct current of ripple by three phase full bridge rectification module, and direct current is again
By being converted to stable direct current while DC-DC voltage regulating module pressure regulation, direct current is converted to high-frequency alternating current by inverter, high
Frequency alternating current is converted to high voltage direct current electricity output by voltage doubling rectifing circuit.High voltage direct current is tested by reactor to generator
The capacitor charging that winding forms the earth and other two-phase windings.
3）Under manual mode, testing crew passes through pulse width modulation module through single-chip microcontroller by the adjusting pressuring knob at controller interface
The duty ratio for adjusting DC-DC voltage regulating module, gradually rises duty ratio, and DC-DC voltage regulating module output voltage is gradually increasing at this time,
High voltage direct current generator output voltage is gradually increasing.
4）After reaching voltage rating, testing crew presses attenuation oscillasion impulse test button, and solid high-voltage is switched from shutdown shape
State is converted on state, and resonance reactor, subject generator and loop stray resistance form RLC underdamped oscillation and returns at this time
Road produces the voltage waveform of damped oscillation, can carry out generator alternating current pressure resistance and shelf depreciation test.
5）Major loop damped oscillation waveform terminates in a few seconds, an attenuation oscillasion impulse off-test.
After carrying out ac voltage withstanding test, when using automatic mode, user setting test voltage to generator and start test,
Device will automatically adjust DC-DC link duty ratio, have the function that boosted output voltages.
Embodiment five
When carrying out DC break down voltage test to stator water-cooling generator by high voltage direct current generator, high voltage direct current generator can shield
Generator unit stator charge for remittance circular current is covered, prevents from influencing to measure.
Damped oscillation wave voltage is generated using high voltage direct current generator, solid high-voltage switch and reactor, to be sent out
Motor AC pressure resistance and partial discharge test.Reactor is resonance reactor.
When generating attenuation oscillasion impulse, subject generator windings are equivalent to capacitor C, and resonance reactor is inductance L, generator around
The superimposed composition stray resistance R of on state resistance of group, resonance reactor and solid high-voltage switch.
Generating damped oscillation wave voltage includes following two step：
1）The DC charging process of generator windings.
2）The attenuation oscillasion impulse process of generator windings.
When generator windings DC charging, high voltage direct current generator by current-limiting resistance and resonance reactor to generator into
Row charging.Charging voltage is negative polarity.The control mode of DC charging process can be constant-current charge, staged boosting, manually liter
Pressure.After charging to voltage rating, major loop is converted from the DC charging process of generator windings to the decaying vibration of generator windings
Swing wave process.
In conversion process, high voltage direct current generator output voltage is reduced to zero, and semiconductor high-voltage switch gear is connected, major loop structure
It changes, forms RLC underdamped oscillation circuit.In RLC underdamped oscillation circuit, subject generator windings are equivalent to capacitor C,
Resonance reactor is inductance L, and the D.C. resistance of generator windings, the D.C. resistance of resonance reactor and solid high-voltage switch logical
The superimposed composition stray resistance R of state resistance.
Above embodiment be only preferred embodiments of the present invention will be described, not to the scope of the present invention into
Row limits, under the premise of not departing from this patent design spirit, the various changes and improvements of the technical solution of the invention patent,
The protection scope that claims of the invention patent determine should be fallen into.
Claims (7)
1. a kind of generator scene mixes pressure test device, it is characterised in that：Including controller, inverter, high direct voltage
Generator, current-limiting resistance, reactor, alternating current-direct current divider and solid high-voltage switch；The controller, inverter, direct current are high
Pressure generator, current-limiting resistance, reactor and alternating current-direct current divider are sequentially connected electrically；The controller is switched with solid high-voltage respectively
It is electrically connected；One end of the solid high-voltage switch and the output end of current-limiting resistance are electrically connected, other end ground connection；The inversion
Power supply and high voltage direct current generator are provided with ground connection；One end of the alternating current-direct current divider is electrically connected with reactor, another
End ground connection；The controller is electrically connected with alternating current-direct current divider.
2. generator scene according to claim 1 mixes pressure test device, it is characterised in that：The alternating current-direct current partial pressure
Device includes the high-voltage arm being sequentially connected electrically and low-voltage arm；The controller is connected to alternating current-direct current voltage divider signal output end.
3. generator scene according to claim 1 or 2 mixes pressure test device, it is characterised in that：The direct current is high
Pressing generator includes the intermediate-frequency transformer being sequentially connected electrically, voltage doubling rectifing circuit and high-voltage measuring circuit.
4. generator scene according to claim 3 mixes pressure test device, it is characterised in that：The inverter packet
Include three phase full bridge rectification module, DC-DC voltage regulating module, full-bridge inverting module, single-chip microcontroller, voltage feedback module, pulsewidth modulation mould
Block, protection circuit and inversion drive module；The three phase full bridge rectification module, DC-DC voltage regulating module and full-bridge inverting module according to
Secondary electrical connection；The voltage feedback module, pulse width modulation module, protection circuit and inversion drive module are sequentially connected electrically；It is described
Pulse width modulation module is electrically connected with DC-DC voltage regulating module；The inversion drive module is electrically connected with full-bridge inverting module；Institute
Voltage feedback module, pulse width modulation module, protection circuit and inversion drive module is stated to be electrically connected with single-item machine；The full-bridge
Inverter module is electrically connected with aforementioned intermediate-frequency transformer；The voltage feedback module is electrically connected with aforementioned high-voltage measuring circuit；
The single-chip microcontroller is electrically connected with aforementioned controllers.
5. a kind of test method of mixing pressure test device in generator scene according to claim 4, it is characterised in that
Include the following steps：
1）Output end by generator respectively with reactor and controller is electrically connected；
2）DC break down voltage test model, attenuation oscillasion impulse ac voltage withstanding test model or alternating current-direct current mixing are selected by controller
Test model, and test parameters setting is carried out by controller, then start to test by controller triggering test device；
3）Select the test process of DC break down voltage test model for：Solid high-voltage switch is in an off state always at this time, inversion
Power supply and high voltage direct current generator enter working condition, and three-phase 380V alternating current has been converted to line by three phase full bridge rectification module
The direct current of wave, is converted to stable direct current while direct current is using DC-DC voltage regulating module pressure regulation, inverter is by direct current
High-frequency alternating current is converted to, high-frequency alternating current is converted to high voltage direct current electricity output by voltage doubling rectifing circuit；Single-chip microcontroller passes through arteries and veins
Wide modulation module adjusts the duty ratio of DC-DC voltage regulating module output pulse width modulating wave by inverter, increases duty ratio, this
When DC-DC voltage regulating module output secondary voltage rise, make high voltage direct current generator output voltage rise；When boosting to record point,
After voltage and leakage current are steady, click and save key, save the voltage and leakage value；After test, reversed DC- is reduced
The duty ratio of DC voltage regulating module output modulating wave makes voltage be gradually decreased to zero point, off-test；
4）Select the test process of attenuation oscillasion impulse ac voltage withstanding test model for：The mode includes DC charging stage and decaying
The oscillating discharge stage；In the DC charging stage, solid high-voltage switch is in an off state always, inverter and high direct voltage
Generator enters working condition, and three-phase 380V alternating current is converted to the direct current of ripple by three phase full bridge rectification module, directly
Stable direct current is converted to while galvanic electricity is using DC-DC voltage regulating module pressure regulation, direct current is converted to high frequency and handed over by inverter
Galvanic electricity, high-frequency alternating current are converted to high voltage direct current electricity output by voltage doubling rectifing circuit；Logical single-chip microcontroller passes through pulse width modulation module
The duty ratio for adjusting DC-DC voltage regulating module, increases duty ratio, and DC-DC voltage regulating module output voltage rises at this time, makes direct current height
Generator output voltage is pressed to rise；After reaching nominal attenuation oscillation wave test voltage, solid high-voltage switch is converted from off state
For on state, resonance reactor, generator and loop stray resistance form RLC underdamped oscillation circuit at this time, produce
The voltage waveform of damped oscillation carries out generator alternating current pressure resistance and shelf depreciation test；Major loop damped oscillation waveform is in the several seconds
Attenuation oscillasion impulse test is completed in interior end；
5）Select the test process of alternating current-direct current bulk testing mode for：The mode includes DC break down voltage stage, DC voltage adjustment
Stage and damped oscillation discharge regime.
6. generator scene according to claim 5 mixes applied voltage test method, it is characterised in that step 2）The test
Parameter includes：It include test voltage, overvoltage protection voltage and overcurrent protection electric current under DC break down voltage test model；Attenuation oscillasion impulse
It include test voltage and protection voltage under test model.
7. generator scene according to claim 6 mixes applied voltage test method, it is characterised in that：The test parameters is set
Set includes being manually operated and being automatically brought into operation two ways with the boost process of high voltage direct current generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810832034.5A CN108872857A (en) | 2018-07-26 | 2018-07-26 | A kind of generator scene mixing pressure test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810832034.5A CN108872857A (en) | 2018-07-26 | 2018-07-26 | A kind of generator scene mixing pressure test device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108872857A true CN108872857A (en) | 2018-11-23 |
Family
ID=64305761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810832034.5A Pending CN108872857A (en) | 2018-07-26 | 2018-07-26 | A kind of generator scene mixing pressure test device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108872857A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780163A (en) * | 2019-10-22 | 2020-02-11 | 中国电力科学研究院有限公司 | Direct-current withstand voltage test device and method for extra-high voltage converter transformer |
| CN112649730A (en) * | 2020-12-04 | 2021-04-13 | 国网新疆电力有限公司电力科学研究院 | Simulated load device and series resonance simulation test system based on same |
| CN112782545A (en) * | 2021-03-18 | 2021-05-11 | 西安热工研究院有限公司 | Method for testing partial discharge of generator |
| CN113589120A (en) * | 2021-08-19 | 2021-11-02 | 国网宁夏电力有限公司电力科学研究院 | Voltage withstand test circuit and voltage withstand test method of high-voltage rapid switch type current limiter |
| CN113777446A (en) * | 2021-07-26 | 2021-12-10 | 国网浙江省电力有限公司营销服务中心 | Extra-high voltage withstand voltage tester with direct current charge-discharge state detection function and test method |
| CN113804931A (en) * | 2021-08-13 | 2021-12-17 | 深圳供电局有限公司 | System, method, apparatus, device and storage medium for generating oscillating wave voltage |
| CN113820598A (en) * | 2021-09-30 | 2021-12-21 | 华能湖南岳阳发电有限责任公司 | Direct-current voltage withstand test method after generator water collecting pipe is fixedly grounded |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1488951A (en) * | 2003-09-05 | 2004-04-14 | 西安福润德电子科技有限公司 | Intelligent AC-DC withstand voltage test apparatus |
| KR20100004013A (en) * | 2008-07-02 | 2010-01-12 | 현대자동차주식회사 | Inverter dc-link voltage discharging system and method thereof |
| CN102540035A (en) * | 2010-12-28 | 2012-07-04 | 苏州华电电气股份有限公司 | Comprehensive direct-current high-voltage test device for internal water cooling generator |
| CN203313081U (en) * | 2013-06-08 | 2013-11-27 | 国家电网公司 | Intelligent DC high voltage generator |
| CN203422447U (en) * | 2013-09-13 | 2014-02-05 | 陆正弦 | Alternating current withstanding voltage and oscillatory wave partial discharge test device for cable |
| CN204241625U (en) * | 2014-10-29 | 2015-04-01 | 中国石油化工股份有限公司 | A kind of withstand voltage distance measuring equipment exchanged based on ultralow frequency |
| CN205283408U (en) * | 2015-11-17 | 2016-06-01 | 上海宝准电源科技有限公司 | Motor test electrical power generating system |
| CN206038836U (en) * | 2016-08-31 | 2017-03-22 | 中国石油化工股份有限公司 | Series resonance high -voltage insulation test device |
| CN206195628U (en) * | 2016-10-26 | 2017-05-24 | 西安工程大学 | High voltage direct current genera tor based on series resonance |
| JP2017131022A (en) * | 2016-01-19 | 2017-07-27 | 株式会社東芝 | DC high voltage generator |
| CN107515357A (en) * | 2016-06-15 | 2017-12-26 | 全球能源互联网研究院 | A kind of alternating current-direct current pressure test system suitable for MMC converter valves |
| CN207164220U (en) * | 2017-08-29 | 2018-03-30 | 石家庄通业电气制造有限公司 | A kind of EC motors/blower fan dispatches from the factory automatic detection test device |
| CN208421179U (en) * | 2018-07-26 | 2019-01-22 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of generator scene mixing pressure test device |
| CN110554270A (en) * | 2019-08-24 | 2019-12-10 | 上海佳特高电压电气设备有限公司 | Power capacitance test line measurement and control system |
-
2018
- 2018-07-26 CN CN201810832034.5A patent/CN108872857A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1488951A (en) * | 2003-09-05 | 2004-04-14 | 西安福润德电子科技有限公司 | Intelligent AC-DC withstand voltage test apparatus |
| KR20100004013A (en) * | 2008-07-02 | 2010-01-12 | 현대자동차주식회사 | Inverter dc-link voltage discharging system and method thereof |
| CN102540035A (en) * | 2010-12-28 | 2012-07-04 | 苏州华电电气股份有限公司 | Comprehensive direct-current high-voltage test device for internal water cooling generator |
| CN203313081U (en) * | 2013-06-08 | 2013-11-27 | 国家电网公司 | Intelligent DC high voltage generator |
| CN203422447U (en) * | 2013-09-13 | 2014-02-05 | 陆正弦 | Alternating current withstanding voltage and oscillatory wave partial discharge test device for cable |
| CN204241625U (en) * | 2014-10-29 | 2015-04-01 | 中国石油化工股份有限公司 | A kind of withstand voltage distance measuring equipment exchanged based on ultralow frequency |
| CN205283408U (en) * | 2015-11-17 | 2016-06-01 | 上海宝准电源科技有限公司 | Motor test electrical power generating system |
| JP2017131022A (en) * | 2016-01-19 | 2017-07-27 | 株式会社東芝 | DC high voltage generator |
| CN107515357A (en) * | 2016-06-15 | 2017-12-26 | 全球能源互联网研究院 | A kind of alternating current-direct current pressure test system suitable for MMC converter valves |
| CN206038836U (en) * | 2016-08-31 | 2017-03-22 | 中国石油化工股份有限公司 | Series resonance high -voltage insulation test device |
| CN206195628U (en) * | 2016-10-26 | 2017-05-24 | 西安工程大学 | High voltage direct current genera tor based on series resonance |
| CN207164220U (en) * | 2017-08-29 | 2018-03-30 | 石家庄通业电气制造有限公司 | A kind of EC motors/blower fan dispatches from the factory automatic detection test device |
| CN208421179U (en) * | 2018-07-26 | 2019-01-22 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of generator scene mixing pressure test device |
| CN110554270A (en) * | 2019-08-24 | 2019-12-10 | 上海佳特高电压电气设备有限公司 | Power capacitance test line measurement and control system |
Non-Patent Citations (1)
| Title |
|---|
| 李建君 等: ""炉水循环泵电机耐压试验分析"", 电力安全技术, no. 10, pages 64 - 67 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780163A (en) * | 2019-10-22 | 2020-02-11 | 中国电力科学研究院有限公司 | Direct-current withstand voltage test device and method for extra-high voltage converter transformer |
| CN112649730A (en) * | 2020-12-04 | 2021-04-13 | 国网新疆电力有限公司电力科学研究院 | Simulated load device and series resonance simulation test system based on same |
| CN112782545A (en) * | 2021-03-18 | 2021-05-11 | 西安热工研究院有限公司 | Method for testing partial discharge of generator |
| CN113777446A (en) * | 2021-07-26 | 2021-12-10 | 国网浙江省电力有限公司营销服务中心 | Extra-high voltage withstand voltage tester with direct current charge-discharge state detection function and test method |
| CN113804931A (en) * | 2021-08-13 | 2021-12-17 | 深圳供电局有限公司 | System, method, apparatus, device and storage medium for generating oscillating wave voltage |
| CN113589120A (en) * | 2021-08-19 | 2021-11-02 | 国网宁夏电力有限公司电力科学研究院 | Voltage withstand test circuit and voltage withstand test method of high-voltage rapid switch type current limiter |
| CN113820598A (en) * | 2021-09-30 | 2021-12-21 | 华能湖南岳阳发电有限责任公司 | Direct-current voltage withstand test method after generator water collecting pipe is fixedly grounded |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108872857A (en) | A kind of generator scene mixing pressure test device and method | |
| EP2985670A1 (en) | Electronic converter circuit system and control method thereof | |
| CN109104097B (en) | High-frequency transformer operation test device | |
| CN109342910B (en) | Full-electric partial discharge detection device and detection method | |
| CN206038836U (en) | Series resonance high -voltage insulation test device | |
| KR101899031B1 (en) | Testing apparatus | |
| CN111245403B (en) | Pulse high-voltage generator | |
| CN103558536A (en) | Circuit for testing overload tolerance capacity of series capacitor and working method of circuit | |
| CN201662604U (en) | Variable-frequency resonance power supply | |
| CN208421179U (en) | A kind of generator scene mixing pressure test device | |
| CN106452160A (en) | Multi-order voltage-multiplying low-ripple-wave direct-current high-voltage generation apparatus | |
| CN111551798A (en) | Low-voltage energy storage type high-power short circuit testing device and testing method | |
| CN104007378A (en) | Testing device and method for damping discharging of series capacitor | |
| CN111044871A (en) | Integrated 10kV zinc oxide arrester test system and method | |
| CN110957796A (en) | Wireless charging circuit and system | |
| CN104215889A (en) | High-frequency insulation withstand voltage tester | |
| CN113440247B (en) | High-frequency irreversible electroporation tumor treatment system | |
| CN206164394U (en) | Multistage voltage -multiplying low ripple high voltage DC generating device | |
| EP0534362A2 (en) | Method and apparatus for testing self-commutative electric power conversion device | |
| CN208257661U (en) | The controllable high-voltage DC power supply of 35kV oscillatory wave system | |
| CN111474423A (en) | Hybrid energy supply burst short circuit testing device and testing method | |
| Huisman et al. | Optimal trajectory control of a CLCC resonant power converter | |
| CN110133516B (en) | Battery charging and discharging device | |
| CN204179954U (en) | A kind of portable electronic voltage regulator | |
| CN103543362A (en) | Selecting method of filters in extra-high voltage transformer no-load test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |