CN201876520U - Frequency modulation series resonance and oscillation wave high-voltage generator - Google Patents
Frequency modulation series resonance and oscillation wave high-voltage generator Download PDFInfo
- Publication number
- CN201876520U CN201876520U CN2010202767439U CN201020276743U CN201876520U CN 201876520 U CN201876520 U CN 201876520U CN 2010202767439 U CN2010202767439 U CN 2010202767439U CN 201020276743 U CN201020276743 U CN 201020276743U CN 201876520 U CN201876520 U CN 201876520U
- Authority
- CN
- China
- Prior art keywords
- voltage
- frequency modulation
- resonance
- series resonance
- reactor
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The utility model discloses a frequency modulation series resonance and oscillation wave high-voltage generator, which is characterized in that the complete-set device comprises a frequency modulation power supply, a voltage-transformation reactor, a measuring voltage divider and the like. As the voltage-transformation reactor is used for replacing a traditional exciting transformer and a resonance reactor, the complete-set device comprises three constitution units instead of four constitution units, the control is also greatly simplified, and the manufacturing and maintenance cost is greatly reduced.
Description
Technical field the utility model relates to the electrical test complete equipment, and particularly the pressue device of frequency regulation resonance high-voltage test is used for power equipment or element are applied ac high voltage.
Background technology all will be tested and assesses before power circuit is put into operation or after the maintenance the state of insulation of force device or equipment.Ac voltage withstanding is a basic and important test in these checks, and measurement of partial discharge then is a kind of more advanced measuring means with state of insulation early diagnosis and prediction of the development trend function that developed recently gets up.Two kinds of tests all need the tested product are applied ac high voltage, but local discharge test requires the pure sine wave of pressurized source output, otherwise higher hamonic wave or interference will influence the measurement of partial discharge quantity.
The method that applies ac high-voltage probably has three kinds: excute a law outward, inductive method and resonance method.Resonance method is to utilize reactor and test specimen (being equivalent to capacitor) to form the LC loop, makes the loop reach resonant condition by transferring modes such as sense or frequency modulation, thereby produce high voltage on test specimen.Frequency modulation series resonance and wave of oscillation high pressure generator promptly are to utilize mode of frequency regulation to realize the resonance method pressurization, then by electronic switch short circuit excitation power supply, utilize the little ripple of preceding several decay of LC loop voltage vibration that test specimen is applied alternating voltage again and finish that partial discharge quantity measures.Because the loop is passive, do not influence the power supply interference that measurement is put in office so do not exist.
Frequency modulation series resonance in the past and wave of oscillation high pressure generator are formed (referring to accompanying drawing 1) by variable frequency power source, driver transformer, resonance reactor and voltage divider.Although it is very high to the electronic switch requirement of withstand voltage that this generator does not resemble the DC charging wave of oscillation high pressure generator, but still bypass variable frequency power source when needing the wave of oscillation to take place, control loaded down with trivial details, and compare with DC charging wave of oscillation high pressure generator, many driver transformers, the set of systems number of packages increases, and makes troubles to use.
Utility model content the purpose of this utility model is to provide a kind of frequency modulation series resonance and wave of oscillation high pressure generator, is used for power equipment or element are applied ac high voltage, and satisfies the local discharge test requirement.For achieving this end, the utility model adopts transformer/reactor and test specimen (being equivalent to capacitor) to form the LC loop, utilize a variable frequency power source series connection entry loop to encourage again, make the loop reach resonant condition by the frequency of regulating driving voltage, improve driving voltage again and make resonance potential reach predetermined value, carry out the resonance pressurization.Turn-off variable frequency power source when needing survey bureau to put, the LC loop will produce the voltage and current wave of oscillation, obtain the sine-wave oscillation voltage of amplitude by exponential damping on test specimen, carry out the shelf depreciation test with the little ripple of preceding several decay.Owing to adopt transformer/reactor replacement driver transformer and resonance reactor in the past, make the complete equipment component units become three by four, formed complete equipment by three technical characterictics that the unit is formed such as variable frequency power source, transformer/reactor, measurement voltage dividers.So, the composition of device and control are all greatly simplified, and manufacturing and maintenance cost reduce many.
Appended drawings 1 is in the past based on the circuit theory diagrams of ac-excited wave of oscillation high pressure generator, and accompanying drawing 2 is circuit theory diagrams of the present utility model, and the R among two width of cloth figure all represents LC loop equivalent resistance; Accompanying drawing 3 oscillogram of voltage that is the utility model when test is put in make-game on the test specimen.
Embodiment
Example 1 comprises variable frequency power source S, transformer/reactor TL, measures voltage divider C referring to a kind of frequency modulation series resonance and the wave of oscillation high pressure generator shown in the accompanying drawing 2
A, insert capacitive test specimen C
XAfter can carry out ac voltage withstanding and local discharge test.Its principle of work is: variable frequency power source S is to transformer/reactor TL and capacitor (C
A+ C
X) the LC loop formed provides a driving voltage, makes the driving voltage frequency reach the loop natural mode shape by frequency modulation, resonance, test specimen C take place in the LC loop
XOn resonance potential will be higher than driving voltage Q (loop quality factor) doubly, improve driving voltage and resonance potential is raise reach predetermined value, carry out the resonance pressurization.Turn-off variable frequency power source S when needing survey bureau to put, the LC loop will produce the wave of oscillation, at test specimen C
XOn obtain oscillating voltage, waveform is as shown in Figure 3.
Claims (1)
1. frequency modulation series resonance and wave of oscillation high pressure generator is characterized in that being made up of three unit such as variable frequency power source, transformer/reactor, measurement voltage dividers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202767439U CN201876520U (en) | 2010-07-30 | 2010-07-30 | Frequency modulation series resonance and oscillation wave high-voltage generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202767439U CN201876520U (en) | 2010-07-30 | 2010-07-30 | Frequency modulation series resonance and oscillation wave high-voltage generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201876520U true CN201876520U (en) | 2011-06-22 |
Family
ID=44164436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202767439U Expired - Fee Related CN201876520U (en) | 2010-07-30 | 2010-07-30 | Frequency modulation series resonance and oscillation wave high-voltage generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201876520U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102346203A (en) * | 2010-07-30 | 2012-02-08 | 丁晓东 | FM (frequency modulation) series resonance and oscillating wave high-voltage generator |
| CN102749558A (en) * | 2012-06-20 | 2012-10-24 | 西安博源电气有限公司 | Device and method for detecting cable oscillatory wave partial discharge and fault location |
| CN104345255A (en) * | 2014-11-07 | 2015-02-11 | 苏州科技学院 | Non-partial discharge damped oscillatory wave high voltage power supply based on low voltage phase-controlled switch |
| CN106461722A (en) * | 2014-05-21 | 2017-02-22 | 西门子公司 | Circuit arrangement for high-voltage test system |
-
2010
- 2010-07-30 CN CN2010202767439U patent/CN201876520U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102346203A (en) * | 2010-07-30 | 2012-02-08 | 丁晓东 | FM (frequency modulation) series resonance and oscillating wave high-voltage generator |
| CN102749558A (en) * | 2012-06-20 | 2012-10-24 | 西安博源电气有限公司 | Device and method for detecting cable oscillatory wave partial discharge and fault location |
| CN106461722A (en) * | 2014-05-21 | 2017-02-22 | 西门子公司 | Circuit arrangement for high-voltage test system |
| CN104345255A (en) * | 2014-11-07 | 2015-02-11 | 苏州科技学院 | Non-partial discharge damped oscillatory wave high voltage power supply based on low voltage phase-controlled switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102175956B (en) | Long duration induction voltage withstand test device of ultrahigh-voltage transformer | |
| CN201876520U (en) | Frequency modulation series resonance and oscillation wave high-voltage generator | |
| CN101349734B (en) | Apparatus for generating oscillating wave for electrical apparatus test | |
| CN103439637B (en) | A kind of wave of oscillation production method for local discharge of electrical equipment test | |
| CN102346203A (en) | FM (frequency modulation) series resonance and oscillating wave high-voltage generator | |
| CN104062603B (en) | Full-power aging test method for current transformer | |
| CN102645594A (en) | Test device for detecting resistance of high-voltage direct-current transmission converter valve and control method thereof | |
| CN202002990U (en) | Comprehensive experiment system of power quality control device | |
| CN201298061Y (en) | Alternating-current frequency conversion resonant vibration overpressure resistant device | |
| CN102735997A (en) | Series resonance withstanding voltage tester | |
| US9343987B2 (en) | Method and device for frequency generation for a resonance converter | |
| CN102694483A (en) | LC (inductance/capacitance) resonance drive circuit for ultrasonic motor and control method of LC resonance drive circuit | |
| CN202502205U (en) | Variable frequency series resonance withstand voltage test apparatus | |
| CN201075831Y (en) | Alternating current and overpressure resistant resonance step-up apparatus for generator | |
| CN101403784B (en) | AC frequency conversion resonance vibration pressure-proof device for AC motor stator winding, and method therefor | |
| CN103743981A (en) | Testing system for static var generator | |
| CN104242677B (en) | Device and method for testing electric equipment | |
| CN103941103B (en) | The measurement apparatus of reactor inductance amount and method in Active Power Filter-APF | |
| CN101308166B (en) | Signal generation circuit for testing hall device electrical behavior | |
| CN202758041U (en) | Intelligent cable voltage withstand system | |
| CN201247305Y (en) | Device for generating oscillating wave for electrical equipment experiment | |
| CN102445622A (en) | Portable tester for volt-ampere characteristic of current transformer | |
| CN105652200A (en) | Controllable voltage fluctuation and flicker generation device | |
| CN204129146U (en) | A kind of three motors are fully loaded with aging testing apparatus to the frequency converter tied up | |
| CN203310941U (en) | Overvoltage test loop of power capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nanjing Sute Electric Co., Ltd. Assignor: Ding Xiaodong Contract record no.: 2011320000931 Denomination of utility model: FM (frequency modulation) series resonance and oscillating wave high-voltage generator Granted publication date: 20110622 License type: Exclusive License Record date: 20110705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20180730 |