CN108427022A - The detuning protective device of high-pressure series Resonance Voltage Withstand Test - Google Patents
The detuning protective device of high-pressure series Resonance Voltage Withstand Test Download PDFInfo
- Publication number
- CN108427022A CN108427022A CN201810391554.7A CN201810391554A CN108427022A CN 108427022 A CN108427022 A CN 108427022A CN 201810391554 A CN201810391554 A CN 201810391554A CN 108427022 A CN108427022 A CN 108427022A
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- Prior art keywords
- circuit
- detuning
- voltage
- pressure
- series resonance
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 230000001681 protective effect Effects 0.000 title claims abstract description 9
- 238000005070 sampling Methods 0.000 claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/36—Overload-protection arrangements or circuits for electric measuring instruments
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The present invention relates to a kind of detuning protective devices of high-pressure series Resonance Voltage Withstand Test, it is used to match with series resonance high-voltage test equipment, alternating voltage including input, the rectification circuit being connected with alternating voltage, the inverter circuit being connected with rectification circuit, the isolating amplifier circuit being connected with inverter circuit, the resonance step-up circuit being connected with isolating amplifier circuit, the High voltage output being connected with resonance step-up circuit, the high-pressure sampling circuit being connected with High voltage output, the A/D circuits being connected with high-pressure sampling circuit, the microcontroller being connected with A/D circuits, the regulating circuit being connected with microcontroller；What is be connected with the high-pressure sampling circuit also has detuning decision circuitry, and the detuning decision circuitry is connected with the regulating circuit, the regulating circuit is connected with the rectification circuit；In high-pressure series resonance test, hits and pressed to wear by height or effective protection high-tension testing apparatus when electrion once test item, while microcontroller being allowed to judge test result protective device.
Description
Technical field
The present invention relates to automation control and high-voltage testing equipment fields, and in particular to a kind of high-pressure series resonance pressure-resistant examination
Test detuning protective device.
Background technology
Series resonance test shows superiority in a large amount of field tests of power industry, is widely used.Mesh
It is preceding that ac voltage withstanding experiment carried out to the cable of different voltages grade, different cross section, different length both at home and abroad, and to GIS, disconnected
When the equipment such as road device, disconnecting switch, mutual inductor, motor, generator unit stator winding carry out ac voltage withstanding experiment, it is humorous to be all made of series connection
Shake high-tension testing apparatus.
Series resonance high-voltage test equipment is by rectification circuit, inverter circuit, isolating amplifier circuit, resonance step-up circuit, height
Press output, high-pressure sampling circuit, A/D circuits, microcontroller, regulating circuit, detuning decision circuitry, by changing resonance step-up circuit
Inductance, capacitance, the simple alternating current high pressure needed for test product pressure test to be measured is obtained on resonant frequency point, passes through voltage stabilizing control
Circuit processed makes the output high-voltage-stable, and is kept for a period of time, to test by the pressure-resistant performance of test specimen.
Since high-potting voltage is high, capacity, energy in system resonance reactor and test product, once test product is breakdown, such as
Fruit does not properly protect measure, can destructive test equipment.
Invention content
There is provided the invention aims to overcome the deficiencies in the prior art one kind can in series resonance high-voltage test,
Effective protection high-tension testing apparatus when the breakdown of test failure test product or electrion, while microcontroller being allowed to judge that test result is protected
Device.
In order to achieve the above objectives, the technical solution adopted by the present invention is：It is used for and series resonance high-voltage test equipment phase
Cooperation, the series resonance high-voltage test equipment includes the alternating voltage of input, it is whole to be connected with the alternating voltage
Current circuit, the inverter circuit being connected with the rectification circuit, the isolating amplifier circuit being connected with the inverter circuit,
The resonance step-up circuit that is connected with the isolating amplifier circuit, the high pressure being connected with the resonance step-up circuit are defeated
The high-pressure sampling circuit go out, being connected with the High voltage output, the A/D circuits being connected with the high-pressure sampling circuit,
The microcontroller being connected with the A/D circuits, the regulating circuit being connected with the microcontroller；
Be connected with the high-pressure sampling circuit also have detuning decision circuitry, the detuning decision circuitry with it is described
Regulating circuit be connected, the regulating circuit is connected with the rectification circuit.
Optimally, the detuning decision circuitry it is characterized in that：The 8th feet of operational amplifier UI connect positive supply, the 4th foot connects
Negative supply, the 3rd foot connect the adjustable sides potentiometer R3, and resistance R4 mono- terminates a fixation of positive supply, another termination resistance R3
End, another fixing end of the resistance R3 connect negative supply by resistance R2；
High-pressure sampling termination capacitor C1, the capacitance C1 connection resistance R1 to ground and meanwhile C1 be connected to the operation amplifier
The 2nd foot of device U1；The 1st foot of the operational amplifier U1 connects resistance R5 to output potential end.
Due to the adoption of the above technical scheme, beneficial effects of the present invention：Once test failure in series resonance high-voltage test
Test product discharges, and detuning decision circuitry of the present invention can provide a signal, cutoff high in time, while microcontroller being notified to try
Fail Type is tested, so as to system hardware, software timely processing, protection test equipment, output test result.
Description of the drawings
Attached drawing 1 is that the detuning protective device each section of high-pressure series Resonance Voltage Withstand Test of the present invention connects block diagram；
Attached drawing 2 is the detuning decision circuitry schematic diagram of the present invention.
Specific implementation mode
Detailed introduction is done to technical solution of the present invention below in conjunction with specific embodiment：
Fig. 1 is that the detuning protective device each section of high-pressure series Resonance Voltage Withstand Test of the present invention connects block diagram.Wherein alternating current
1 output of pressure is that 50Hz220 lies prostrate AC signal, which is rectified into direct current signal by rectification circuit 2, the width of the direct current signal
Degree is controlled by the output voltage signal of regulating circuit 8, and inverter circuit 3 changes the direct current signal that the rectification circuit 2 is sent again
At square wave AC signal, which boosts through isolating amplifier circuit 4, then further boosts through resonance step-up circuit 5,
High voltage output 6 is obtained on test item, which divides through high-pressure sampling circuit 7, obtains the low pressure proportional to high pressure,
The low-voltage signal divides two-way, and changing into digital signal through A/D circuits 10 all the way is read by microcontroller 9 for display control, the list
The output control regulating circuit 8 that piece machine 9 is converted according to A/D；The another way of high-pressure sampling signal is supervised into detuning decision circuitry 11
It controls whether entire pilot system detuning phenomenon occurs, passes through the regulating circuit 8 once detuning phenomenon occur and providing signal immediately
The output for turning off the rectification circuit 2, to close whole system high pressure.
The resonance step-up circuit 5 is inductance capacitance series circuit, reaches inductance, capacitance series resonance frequency in test frequency
When rate, very high voltage can be obtained on capacitance, this voltage may be used as the high pressure pressure test of test item.It is used in experiment
Inductance be high pressure resistant, large capacity reactor, capacitance is for example long cable of test item, GIS etc..In high-potting process
In, it is broken down by high-voltage or electrion once there is test item, test item capacitance cannot meet condition of resonance, on test item
High pressure disappears at once, and such case is known as " detuning ".
Attached drawing 2 is the detuning decision circuitry schematic diagram of the present invention, which consists of two parts：Differential circuit and voltage compare
Circuit.Differential circuit is made of capacitance C1 and resistance R1；Voltage comparator circuit is by operational amplifier U1, resistance R4, resistance R2, electricity
R5, potentiometer R3 compositions are hindered, the 8th foot of operational amplifier connects+15V power supplys, the 4th foot connects a 15V power supplys.
The defeated of the capacitance C1 of differential circuit connects high-pressure sampling end, and high pressure is accessed from the output of high-pressure sampling circuit 7 described in Fig. 1
Sampled signal, the output of differential circuit C1, R1 connect the 2nd foot of operational amplifier, and the output voltage of differential circuit is defeated depending on its
Enter the change rate of voltage, i.e., the current potential of the 2nd foot of operational amplifier depends on the change rate of high-pressure sampling voltage, when sampling voltage not
When change, differential circuit export current potential be 0, when sampling voltage rises differential circuit output be just, it is micro- when sampling voltage declines
Parallel circuit output is negative.
Resistance R4, R2, potentiometer R3 form bleeder circuit in voltage comparator circuit, adjust potentiometer R3, can be in operation
The 3rd foot of amplifier obtains steady dc voltage, and the current potential of the 2nd foot of operational amplifier and the 3rd foot is compared, comparison result from
1st foot exports, if the 3rd foot current potential is more than the 2nd foot current potential, the 1st foot exports positive high level, if the 2nd foot current potential is more than the 1st foot
Current potential, the then low level that the output of the 1st foot is born.
When series resonance high-voltage test, adjusting the 3rd foot of operational amplifier is negative voltage, and high pressure is substantially steady when experiment, micro-
Parallel circuit output is 0, and the 1st foot of operational amplifier output at this time is negative low level, once experiment appearance is detuning, high voltage is unexpected
It disappears, the 2nd foot of operational amplifier will appear larger negative level, forms the 2nd foot level and is less than the 3rd foot level, to the 1st foot electricity
It redresses and turns, become positive high level, exported from the output potential end of detuning decision circuitry, trigger regulating circuit 8 described in Fig. 1, make
It closes the output of rectification circuit 2 described in Fig. 1.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (2)
1. a kind of detuning protective device of high-pressure series Resonance Voltage Withstand Test is used to match with series resonance high-voltage test equipment
It closes, the rectification that the series resonance high-voltage test equipment includes the alternating voltage of input, is connected with the alternating voltage
Circuit, the inverter circuit being connected with the rectification circuit, the isolating amplifier circuit being connected with the inverter circuit, with
Resonance step-up circuit that the isolating amplifier circuit is connected, the High voltage output being connected with the resonance step-up circuit,
The high-pressure sampling circuit being connected with the High voltage output, the A/D circuits being connected with the high-pressure sampling circuit, with institute
State the microcontroller that A/D circuits are connected, the regulating circuit being connected with the microcontroller；
What is be connected with the high-pressure sampling circuit also has detuning decision circuitry, the detuning decision circuitry and the tune
Volt circuit is connected, the regulating circuit is connected with the rectification circuit.
2. the detuning protective device of high-pressure series Resonance Voltage Withstand Test according to claim 1, the detuning decision circuitry
It is characterized in that：The 8th feet of operational amplifier U1 connect positive supply, the 4th foot connects negative supply, the 3rd foot connects the adjustable sides potentiometer R3, resistance
R4 mono- terminates a fixing end of positive supply, another termination resistance R3, and another fixing end of the resistance R3 passes through resistance
R2 connects negative supply；
High-pressure sampling termination capacitor C1, the capacitance C1 connection resistance R1 to ground and meanwhile C1 be connected to the operational amplifier U1
The 2nd foot；The 1st foot of the operational amplifier U1 connects resistance R5 to output potential end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810391554.7A CN108427022A (en) | 2018-04-20 | 2018-04-20 | The detuning protective device of high-pressure series Resonance Voltage Withstand Test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810391554.7A CN108427022A (en) | 2018-04-20 | 2018-04-20 | The detuning protective device of high-pressure series Resonance Voltage Withstand Test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108427022A true CN108427022A (en) | 2018-08-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810391554.7A Pending CN108427022A (en) | 2018-04-20 | 2018-04-20 | The detuning protective device of high-pressure series Resonance Voltage Withstand Test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108427022A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327013A (en) * | 2018-11-05 | 2019-02-12 | 苏州科技大学 | A kind of series resonance test overtemperature protection system |
| CN113311295A (en) * | 2021-01-11 | 2021-08-27 | 合肥开关厂有限公司 | Online cable alternating current withstand voltage test system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201181428Y (en) * | 2008-03-05 | 2009-01-14 | 苏州市华电电气技术有限公司 | High voltage output control device used for series resonance pressure test |
| US20090207064A1 (en) * | 2006-10-27 | 2009-08-20 | Sartorius Ag | Measurement amplification device and method |
| CN202159114U (en) * | 2011-08-10 | 2012-03-07 | 武汉市华天电力自动化有限责任公司 | Series connection frequency conversion automatic resonance test device |
| CN202870156U (en) * | 2012-10-15 | 2013-04-10 | 杭州海兴电力科技股份有限公司 | Full decompression detection circuit |
| CN203645304U (en) * | 2013-12-28 | 2014-06-11 | 河南省维仕特智能技术有限公司 | Intelligent voltage-loss tripping controller |
| CN103856051A (en) * | 2014-03-26 | 2014-06-11 | 中国科学院光电技术研究所 | High-voltage square wave gain driving signal amplitude control device |
| CN204203345U (en) * | 2014-12-04 | 2015-03-11 | 德力西电气有限公司 | A kind of voltage detecting circuit |
| CN107748283A (en) * | 2017-11-14 | 2018-03-02 | 贵州电网有限责任公司 | A kind of micro energy lose electric energy meter metered voltage current monitoring alarm device and its monitoring method |
| CN208334444U (en) * | 2018-04-20 | 2019-01-04 | 苏州科技大学 | The detuning protective device of high-pressure series Resonance Voltage Withstand Test |
-
2018
- 2018-04-20 CN CN201810391554.7A patent/CN108427022A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090207064A1 (en) * | 2006-10-27 | 2009-08-20 | Sartorius Ag | Measurement amplification device and method |
| CN201181428Y (en) * | 2008-03-05 | 2009-01-14 | 苏州市华电电气技术有限公司 | High voltage output control device used for series resonance pressure test |
| CN202159114U (en) * | 2011-08-10 | 2012-03-07 | 武汉市华天电力自动化有限责任公司 | Series connection frequency conversion automatic resonance test device |
| CN202870156U (en) * | 2012-10-15 | 2013-04-10 | 杭州海兴电力科技股份有限公司 | Full decompression detection circuit |
| CN203645304U (en) * | 2013-12-28 | 2014-06-11 | 河南省维仕特智能技术有限公司 | Intelligent voltage-loss tripping controller |
| CN103856051A (en) * | 2014-03-26 | 2014-06-11 | 中国科学院光电技术研究所 | High-voltage square wave gain driving signal amplitude control device |
| CN204203345U (en) * | 2014-12-04 | 2015-03-11 | 德力西电气有限公司 | A kind of voltage detecting circuit |
| CN107748283A (en) * | 2017-11-14 | 2018-03-02 | 贵州电网有限责任公司 | A kind of micro energy lose electric energy meter metered voltage current monitoring alarm device and its monitoring method |
| CN208334444U (en) * | 2018-04-20 | 2019-01-04 | 苏州科技大学 | The detuning protective device of high-pressure series Resonance Voltage Withstand Test |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327013A (en) * | 2018-11-05 | 2019-02-12 | 苏州科技大学 | A kind of series resonance test overtemperature protection system |
| CN113311295A (en) * | 2021-01-11 | 2021-08-27 | 合肥开关厂有限公司 | Online cable alternating current withstand voltage test system |
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