CN203811651U - Power supply for detecting operating wave of transformer and inducing voltage-withstanding partial discharge - Google Patents
Power supply for detecting operating wave of transformer and inducing voltage-withstanding partial discharge Download PDFInfo
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- CN203811651U CN203811651U CN201420231105.3U CN201420231105U CN203811651U CN 203811651 U CN203811651 U CN 203811651U CN 201420231105 U CN201420231105 U CN 201420231105U CN 203811651 U CN203811651 U CN 203811651U
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Abstract
The utility model provides a power supply for detecting operating waves of a transformer and inducing voltage-withstanding partial discharge. The power supply comprises an impact-resistant DC high-voltage generator, a high-voltage generator voltage-multiplying cylinder, a charging resistor, an energy storage capacitor, a high-voltage electronic switch device, a wave modulating inductor, a wave head resistor and a wave tail resistor, wherein an output end of the impact-resistant DC high-voltage generator is connected with an input end of the high-voltage generator voltage-multiplying cylinder, an output end of the high-voltage generator voltage-multiplying cylinder is connected with an input end of the high-voltage electronic switch device, the charging resistor is serially connected between the output end of the high-voltage generator voltage-multiplying cylinder and the input end of the high-voltage electronic switch device, an output end of the high-voltage electronic switch device is connected with an input end of a transformer, the energy storage capacitor, the wave head resistor, the wave tail resistor and the wave modulating inductor are serially connected between the output end of the high-voltage electronic switch device and the input end of the transformer, and an output end of the transformer is connected with a voltage divider and a detection impedor. The power supply provided by the utility model is a special power supply which satisfies the requirement of field transformer operating wave tests, is small in size and is portable.
Description
Technical field
The utility model relates to and a kind ofly involves for detection of transformer operating the power supply that the withstand voltage office of induction puts.
Background technology
For the ability of examination transformer tolerance switching overvoltage, should test by switching overvoltage, especially, in supergrid, switching overvoltage has become the Main Basis of design insulation.But due to existing transformer operating wave power acquisition power frequency pattern, bulky.Comparatively speaking, existing test method is that ball-gap discharge (if need Electronic Control electric discharge, needs optical fiber control, electronic ignition), electronic ignition moment have shake play a game put test have impact, volume is large, direct supply is power frequency DC boosting, and volume is large, can only manually control.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and provides a kind of and involves for detection of transformer operating the power supply that the withstand voltage office of induction puts.
The purpose of this utility model is achieved through the following technical solutions:
Involve for detection of transformer operating the power supply that the withstand voltage office of induction puts, comprise shock-resistant high voltage direct current generator, high pressure generator times pressure cylinder, charging resistor, storage capacitor, high-pressure electronic switchgear, harmonic inductance, wave front resistance, wave rear resistance, the output terminal of described shock-resistant high voltage direct current generator is connected with the input end of high pressure generator times pressure cylinder, the output terminal of described high pressure generator times pressure cylinder is connected with the input end of high-pressure electronic switchgear, and be serially connected with charging resistor between the output terminal of high pressure generator times pressure cylinder and the input end of high-pressure electronic switchgear, the output terminal of described high-pressure electronic switchgear is connected with the input end of transformer, between the output terminal of high-pressure electronic switchgear and the input end of transformer, be serially connected with storage capacitor, wave front resistance, wave rear resistance and harmonic inductance, the output terminal of described transformer is connected with voltage divider and detects impedor.
Further, above-mentioned involves for detection of transformer operating the power supply that the withstand voltage office of induction puts, described high-pressure electronic switchgear is made up of the high-pressure electronic switch stack of some layers of series connection, wherein, high-pressure electronic switch is made up of controllable silicon, fly-wheel diode, equalizing resistance, gate-drive device and optical fiber receiving trap, described controllable silicon is parallel with fly-wheel diode, and controllable silicon is also parallel with equalizing resistance, and described silicon controlled gate pole is connected with optical fiber receiving device by gate-drive device.
Further, above-mentioned involves for detection of transformer operating the power supply that the withstand voltage office of induction puts, described wave front resistance, and wave rear resistance is trimmable resistance.
The substantive distinguishing features of technical solutions of the utility model and progressive being mainly reflected in:
The utility model provides a kind of special power supply of satisfied on-the-spot Switching Surge Tests on Power Transformers, and this power supply can meet the compact power of transformer on-site test, and can also solve transformer and doing under switching surge test prerequisite and can make-game put test; The stability that solves each electric discharge, this power volume is little, portable.Electric discharge simultaneously adopts high-pressure electronic switchgear, more can effectively meet in the synchronism that starts electric discharge and startup test.
Brief description of the drawings
Below in conjunction with accompanying drawing, technical solutions of the utility model are described further:
Fig. 1: circuit structure schematic diagram of the present utility model;
Fig. 2: the working circuit diagram of high-pressure electronic switchgear;
Fig. 3: transformer standard operation ripple test waveform figure;
Fig. 4 ~ 7: transformer test oscillogram.
Embodiment
As shown in Figure 1, involve for detection of transformer operating the power supply that the withstand voltage office of induction puts, comprise shock-resistant high voltage direct current generator 1, high pressure generator times pressure cylinder 2, charging resistor 3, storage capacitor 4, high-pressure electronic switchgear 11, harmonic inductance 7, wave front resistance 5, wave rear resistance 6, the output terminal of shock-resistant high voltage direct current generator 1 is connected with the input end of high pressure generator times pressure cylinder 2, the output terminal of high pressure generator times pressure cylinder 2 is connected with the input end of high-pressure electronic switchgear 11, and be serially connected with charging resistor 3 between the output terminal of high pressure generator times pressure cylinder 2 and the input end of high-pressure electronic switchgear 11, the output terminal of high-pressure electronic switchgear 11 is connected with the input end of transformer 10, between the output terminal of high-pressure electronic switchgear 11 and the input end of transformer 10, be serially connected with storage capacitor 4, wave front resistance 5, wave rear resistance 6 and harmonic inductance 7, the output terminal of transformer 10 is connected with voltage divider 8 and detects impedor 9.Wherein, voltage divider 8, for detection of the test waveform of transformer 10, detects impedor 9 and puts test for detection of the office of transformer 7.By voltage divider 8 and detection impedor 9, thereby the detection of transformer 7 is shown to whether the data of transformer 7 meet the requirements.
As shown in Figure 2, high-pressure electronic switchgear 11 is made up of the high-pressure electronic switch stack of some layers of series connection, wherein, high-pressure electronic switch is made up of controllable silicon 113, fly-wheel diode 112, equalizing resistance 111, gate-drive device and optical fiber receiving trap, controllable silicon 113 is parallel with fly-wheel diode 112, controllable silicon 113 is also parallel with equalizing resistance 111, and the gate pole of controllable silicon 113 is connected with optical fiber receiving device by gate-drive device.High-pressure electronic switchgear 11 gate-drive by controllable silicon 113 is 11 conductings of high-pressure electronic switchgear, and can ensure several controllable silicon 113 conductings simultaneously.
Wherein, 1) shock-resistant high voltage direct current generator 1, a kind of stable high direct voltage is provided, can charge to jumbo capicitive sample, and also energy shock resistance, spark and do not protect, more can not damage; High pressure generator times pressure cylinder 2, positive polarity output, is negative voltage test request for meeting transformer operating wave;
2) charging resistor 3 and storage capacitor 4, by shock-resistant high voltage direct current generator 1 and high pressure generator times pressure cylinder 2, storage capacitor 4 is charged, while, storage capacitor 4 formed resonant tank as resonant capacitance and harmonic inductance 7 at high-pressure electronic switchgear 11 in the time closing;
3) high-pressure electronic switchgear 11, selects different brackets high-pressure electronic switch according to the electric pressure of transformer 10;
4) wave front resistance 5,6 effects of wave rear resistance are to meet the time requirement of operation ripple; By regulating wave front resistance 5, wave rear resistance 6, as shown in Figure 3, obtains the operation ripple of the transformer of a standard;
5) part of detecting is by voltage divider 8 with detect impedor 9 and form, and puts for detection of waveform and the withstand voltage office of the operation ripple of transformer 10; Wherein, test section can be wave filter or detection system test waveform is put in office and test is put in office.
Specific works process is as follows:
The switching surge test essence of transformer 10 is charge and discharge process, wherein, charging is storage capacitor 4, wave front resistance 5, wave rear resistance 6, the process that harmonic inductance 7 charges, electric discharge is wave front resistance 5, wave rear resistance 6, the process of harmonic inductance 7, by shock-resistant high voltage direct current generator 1, after high pressure generator times pressure cylinder 2 charges to storage capacitor 4, after storage capacitor 4 is full of, by high-pressure electronic switchgear 11 closures, storage capacitor 4 starts electric discharge, now storage capacitor 4 forms a new loop with transformer 10, form LC resonant tank by storage capacitor 4 and harmonic inductance 7 simultaneously, then by voltage divider 8 and detection impedor 9, the secondary level of transformer 10 is detected, along with the raising of trial voltage, the size of partial discharge quantity changes thereupon, can judge the dielectric level of transformer 10,
Detecting the operation of transformer, to involve the parameter step that the withstand voltage office of induction puts as follows:
1), according to wave front resistance 5, wave rear resistance 6 being debugged shown in Fig. 3, the waveform that can obtain a standard is calibrated;
2), DC boosting: first boost to required trial voltage according to code, by charging resistor 3 to storage capacitor 4 charge (in the process of boosting, storage capacitor effect is energy storage);
3), start effluve, test is put in startup office: first need to turn-off that to impact high voltage direct current generator 1(object be that the switching signal of DC boosting has spontaneous office to put to need shielding), then start the high-pressure electronic switch in high-pressure electronic switchgear 11, realizing storage capacitor 4 by high-pressure electronic switch discharges, now storage capacitor 4 and harmonic inductance 7 form LC vibration, regulate wave front resistance 5, wave rear resistance 6 and harmonic inductance, make to operate waveform and meet national standard (being shown in Fig. 3); Use ultrahigh-frequency current mutual inductor (or detecting impedance) to detect reactor shelf depreciation parameter simultaneously;
4), repeat second step and the 3rd step, along with the rising of trial voltage, office high-volume amplifies thereupon, by judgement, office high-volume changes, and judges the dielectric level of transformer 10.
embodiment 1
Test waveform, i.e. data analysis, test product is 160KVA transformer field test figure:
As shown in Figure 4, while charging to 3.44kV, high side voltage measure portion data: wave head time: 196 μ s; The wavelength time: 1444 μ s, 90% duration: 328 μ s; Negative peak-22119.14V, now can judge the waveform of this waveform in not discharging;
As shown in Figure 5, while charging to 3.6kV, high side voltage measure portion data: wave head time: 124 μ s; The wavelength time: 1420 μ s, 90% duration: 212 μ s; Negative peak-24414.06V, now can judge the waveform of this waveform in critical electric discharge;
As shown in Figure 6, while charging to 4.0kV, high side voltage measure portion data: wave head time: 120 μ s; The wavelength time: 1354 μ s, 90% duration: 196 μ s; Negative peak-37548.83V, now can judge this waveform in remarkable discharge waveform;
As shown in Figure 7, while charging to 4.5kV, high side voltage measure portion data: wave head time: 92 μ s; The wavelength time: 1260 μ s, 90% duration: 12 μ s; Negative peak-22119.14V, now can judge this waveform in remarkable discharge waveform.
It is emphasized that: be only preferred embodiment of the present utility model above, not the utility model is done to any pro forma restriction, any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of technical solutions of the utility model.
Claims (3)
1. involve for detection of transformer operating the power supply that the withstand voltage office of induction puts, it is characterized in that: comprise shock-resistant high voltage direct current generator, high pressure generator times pressure cylinder, charging resistor, storage capacitor, high-pressure electronic switchgear, harmonic inductance, wave front resistance, wave rear resistance, the output terminal of described shock-resistant high voltage direct current generator is connected with the input end of high pressure generator times pressure cylinder, the output terminal of described high pressure generator times pressure cylinder is connected with the input end of high-pressure electronic switchgear, and be serially connected with charging resistor between the output terminal of high pressure generator times pressure cylinder and the input end of high-pressure electronic switchgear, the output terminal of described high-pressure electronic switchgear is connected with the input end of transformer, between the output terminal of high-pressure electronic switchgear and the input end of transformer, be serially connected with storage capacitor, wave front resistance, wave rear resistance and harmonic inductance, the output terminal of described transformer is connected with voltage divider and detects impedor.
2. according to claim 1ly involve for detection of transformer operating the power supply that the withstand voltage office of induction puts, it is characterized in that: described high-pressure electronic switchgear is made up of the high-pressure electronic switch stack of some layers of series connection, wherein, high-pressure electronic switch is made up of controllable silicon, fly-wheel diode, equalizing resistance, gate-drive device and optical fiber receiving trap, described controllable silicon is parallel with fly-wheel diode, controllable silicon is also parallel with equalizing resistance, and described silicon controlled gate pole is connected with optical fiber receiving device by gate-drive device.
3. according to claim 1ly involve for detection of transformer operating the power supply that the withstand voltage office of induction puts, it is characterized in that: described wave front resistance, wave rear resistance is trimmable resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420231105.3U CN203811651U (en) | 2014-05-07 | 2014-05-07 | Power supply for detecting operating wave of transformer and inducing voltage-withstanding partial discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420231105.3U CN203811651U (en) | 2014-05-07 | 2014-05-07 | Power supply for detecting operating wave of transformer and inducing voltage-withstanding partial discharge |
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| Publication Number | Publication Date |
|---|---|
| CN203811651U true CN203811651U (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420231105.3U Withdrawn - After Issue CN203811651U (en) | 2014-05-07 | 2014-05-07 | Power supply for detecting operating wave of transformer and inducing voltage-withstanding partial discharge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926435A (en) * | 2014-05-07 | 2014-07-16 | 苏州工业园区海沃科技有限公司 | Power source for detecting transformer operation waves and inducting withstand voltage partial discharge |
-
2014
- 2014-05-07 CN CN201420231105.3U patent/CN203811651U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926435A (en) * | 2014-05-07 | 2014-07-16 | 苏州工业园区海沃科技有限公司 | Power source for detecting transformer operation waves and inducting withstand voltage partial discharge |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140903 Effective date of abandoning: 20170503 |
|
| AV01 | Patent right actively abandoned |