CN201527437U - Three-phase partial discharge test power supply device - Google Patents
Three-phase partial discharge test power supply device Download PDFInfo
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- CN201527437U CN201527437U CN200920255228XU CN200920255228U CN201527437U CN 201527437 U CN201527437 U CN 201527437U CN 200920255228X U CN200920255228X U CN 200920255228XU CN 200920255228 U CN200920255228 U CN 200920255228U CN 201527437 U CN201527437 U CN 201527437U
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Abstract
The utility model relates to a three-phase partial discharge test power supply device, comprising a power supply control module used for rectifying inputted three-phase current into direct current, a control adjusting module used for generating a sine wave with adjustable frequency and voltage value, and a power amplifying module, wherein the output end of the power supply control module is connected with the power supply access end of the power amplifying module; the output end of the control adjusting module is connected with the sine wave access end of the power amplifying module; the power supply control module comprises a thyristor control module and a rectifying module used for rectifying and filtering the input three-phase current; and the thyristor control module is used for controlling the switching on and switching off of the rectifying thyristor of the rectifying module and the size of the charging current outputted by the rectifying module. The three-phase partial discharge test power supply device has the advantages of wide application range, strong anti-interference capability and having little influence on a tested product.
Description
Technical field
The utility model relates to a kind of partial discharge test supply unit, especially a kind of three-phase partial discharge test supply unit.
Background technology
Partial discharge test mainly is to be used for detecting the defective that causes in inner weakness that exists of insulator arrangement or the production run, it is a kind of effective method of prevention electrical equipment malfunction, belong to non-destructive testing (NDT), generally can not cause damage insulation, but strict than traditional withstand voltage test examination; Partial discharge test has become present most important transformer site test project, and the transformer of the above electric pressure of 220kV must just can put into operation by partial discharge test.Along with to the improving constantly of this test cognition degree, the partial discharge of transformer test from attaching most importance to extra-high pressure grade transformers such as 500kV, 330kV, is extended to the expansion of low voltage grade transformers such as 110kV; In recent years, the need for electricity anxiety, the interruption maintenance time of 110kV transformer plan is generally very short, arranges the experiment work limited time, test efficiency is required very high, so the ease for use of test unit, reliability are extremely important; Along with the change of transformer station's mode on duty, 110kV transformer station station generally becomes little with the varying capacity configuration, and in the majority with 50kVA, 80kVA, 100kVA, the shared power supply capacity of test unit can not be too big; The 110kV substation that is positioned at the urban district takes up space very little, and volume is small and exquisite, flexible as far as possible to require test unit; The like product of a few days ago doing this class test mainly contains testing transformer, frequency tripling transformer and genset etc., but their usable range is subjected to the defective of equipment own and is restricted.Main existing problems have: 1, volume is big, moves difficulty, is not suitable for on-the-spot the use; 2, fixed-frequency, pilot project is single, and the scope of application is little; 3, partial discharge quantity is big, and test findings can't be differentiated and judge to poor anti jamming capability; 4, output waveform is poor, and various harmonic componentss are big, and wave form distortion is serious, easily product to be tested is produced harmful effect.
The utility model content
The utility model purpose be provide in order to overcome the deficiencies in the prior art that a kind of scope of application is wide, antijamming capability is strong, to the little three-phase partial discharge test supply unit of product to be tested influence.
For achieving the above object, the technical solution adopted in the utility model is: a kind of three-phase partial discharge test supply unit, comprise be used for will input the three-phase electricity rectification be galvanic power supply control module, be used for regulating and controlling module, the power amplifier module of the adjustable sine wave of generated frequency and magnitude of voltage; Described power supply control module output terminal is connected with described power amplifier module power access end, and described regulating and controlling module output terminal is connected with the sinusoidal wave incoming end of described power amplifier module; During work, the output of described power supply control module as the direct current of power supply to power amplifier module, described regulating and controlling module sine wave output is to power amplifier module, described power amplifier module is used for the sinewave output after amplifying to product to be tested, described power supply control module comprises thyristor-controlled molding piece and is used for the three-phase electricity rectification module that carries out rectification and filtering to input, and described thyristor-controlled molding piece is used to control the size of the charging current of the switch of the brilliant lock of rectification of described rectification module and the output of described rectification module.
Preferably, described power supply control module and described two-way connection of regulating and controlling module, when the sine voltage signal of described regulating and controlling module output is the brilliant lock of null value and described power supply control module when being in opening, described regulating and controlling module sine wave output.
Preferably; it also comprises the feedback protection module; described power amplifier module, feedback protection module, regulating and controlling module are formed first backfeed loop; the output signal of collection of described feedback protection module and processing power amplification module; described regulating and controlling module is made adjusting according to the output of feedback protection module, makes the sine wave of power amplifier module output voltage stabilization.
Preferably; it also comprises the feedback protection module; described power amplifier module, feedback protection module, power supply control module form second backfeed loop; the output signal of collection of described feedback protection module and processing power amplification module; described power supply control module is made adjusting according to the output of feedback protection module, makes the sine wave of power amplifier module outputting current steadily.
Preferably, described power supply control module, regulating and controlling module, power amplifier module, feedback protection module are provided with separately or two kinds and two or more combination setting.
Preferably, it also comprises the display module of the voltage that is used to show the sine wave that exports described product to be tested to, frequency, current value.
Because the utilization of technique scheme, the utility model compared with prior art has following advantage: have that the scope of application is wide, antijamming capability strong, to the little advantage of product to be tested influence.
Description of drawings
Below in conjunction with accompanying drawing technical solutions of the utility model are described further:
Wherein: 1, power supply control module; 11, thyristor-controlled molding piece; 12, rectification module; 2, regulating and controlling module; 3, power amplifier module; 4, product to be tested; 5, power filtering module; 6, feedback protection module; 7, output filtration module; 8, display module; 9, first backfeed loop; 10, second backfeed loop.
Embodiment
A kind of three-phase partial discharge test supply unit of implementing for the utility model as shown in Figure 1, comprise be used for will input the three-phase electricity rectification be galvanic power supply control module 1, be used for regulating and controlling module 2, the power amplifier module 3 of the adjustable three-phase sine-wave of generated frequency and magnitude of voltage, described power supply control module 1 output terminal is connected with described power amplifier module 3 power access ends, and described regulating and controlling module 2 output terminals are connected with the sinusoidal wave incoming end of described power amplifier module 3; During work, the output of power supply control module 1 as the direct current of power supply to power amplifier module 3, regulating and controlling module 2 output three-phase sine-waves are to power amplifier module 3, three-phase sine-wave after power amplifier module 3 outputs are amplified is to product to be tested 4, power supply control module 1 comprises thyristor-controlled molding piece 11 and is used for rectification module 12 that the three-phase electricity of input is carried out rectification and filtering, and thyristor-controlled molding piece 11 is used to control the switch of the brilliant lock of rectification of rectification module 12, and control the size of the charging current of rectification module output by the service time of the brilliant lock of rectification in the control rectification module 12.
Described power supply control module 1 and described 2 two-way connections of regulating and controlling module, when the sine voltage signal of described regulating and controlling module 2 outputs is the brilliant lock of null value and described power supply control module 1 when being in opening, described regulating and controlling module sine wave output.
It also comprises feedback protection module 6; described power amplifier module 3, feedback protection module 6, regulating and controlling module 2 are formed first backfeed loop; described feedback protection module 6 is gathered the also output signal of processing power amplification module 3; described regulating and controlling module 2 is made adjusting according to the output of feedback protection module 6, makes the sine wave of power amplifier module output voltage stabilization.
It also comprises feedback protection module 6; described power amplifier module 3, feedback protection module 6, power supply control module 1 form second backfeed loop; described feedback protection module 6 is gathered the also output signal of processing power amplification module 3; described power supply control module 1 is made adjusting according to the output of feedback protection module 6, makes the sine wave of power amplifier module 3 outputting current steadilies.
In the present embodiment, described power supply control module 1, regulating and controlling module 2, power amplifier module 3, feedback protection module 6 are arranged to two kinds of combinations separately and are provided with, and can certainly be arranged to two or more combination settings.
It also comprises the display module 8 of the voltage that is used to show the sine wave that exports described product to be tested to, frequency, current value.
Regulating and controlling module 2 makes that this local discharge test power supply can output frequency and all continuously adjustable a kind of complete three-phase sine-wave of voltage, cooperate different assemblies can realize very wide usable range, pilot project is abundant, simultaneously, when product to be tested is capacitive or perception, need more powerful conventional power source, and the partial discharge test power supply that the utility model is announced can be formed parallel connection or series resonant tank by frequency modulation and in conjunction with reactor or capacitor, so power demand only is 1/Q times of conventional power source.
Adopt power supply control module 1 to replace producing the cover pre-charging device that very big electric current is provided with for overcoming the charging of high capacity filter capacitor in the conventional art, make the volume of this local discharge test power supply reduce, weight lightens, move conveniently, be fit to on-the-spot the use, simultaneously, the omission of pre-charging device has also reduced the element heating amount, and protection equipment can be worked more reliably;
Also be inserted with the power filtering module 5 of the clutter composition that is used for the filtering three-phase electricity between rectification module 12 and the three-phase electricity input end.
The power supply control module is connected with the regulating and controlling module is two-way, and when the three-phase sine wave voltage signal of regulating and controlling module output is the brilliant lock of null value and power supply control module when being in opening, the regulating and controlling module is exported three-phase sine-wave.
The three-phase partial discharge test power supply of present embodiment also comprises feedback protection module 6; power amplifier module 3, feedback protection module 6, regulating and controlling module 2 formed signal flow in stable first backfeed loop, 9, the first backfeed loops 9 of the three-phase sine wave voltage that is used for 3 outputs of guaranteed output amplification module to being power amplifier module 3 → feedback protection module 6 → regulating and controlling module 2.The output signal of collection of feedback protection module and processing power amplification module; the regulating and controlling module is made adjusting according to the output of feedback protection module; make the three-phase sine-wave of power amplifier module output voltage stabilization; concrete; when the voltage fluctuation of the three-phase sine-wave of power amplifier module 3 output; automatically regulate the power amplifier module output signal, make its output voltage stabilization.
The three-phase partial discharge test power supply of present embodiment comprises also and the parallel output filtration module 7 that is connected and is used for absorbing the clutter composition of output three-phase sine-wave of the output terminal of power amplifier module 3 that the filtered three-phase sine-wave of output filtration module 7 outputs is to product to be tested 4.
The setting of power filtering module 5 and output filtration module 7 makes that the office of output waveform is high-volume very little, and antijamming capability is very strong, and this makes that the judgement of experimental result is more accurate, good reliability.
The three-phase partial discharge test power supply of present embodiment also comprises the display module 8 of the voltage that is used to show output filtration module 7 output three-phase sine-waves, frequency, current value.
Power supply control module 1, regulating and controlling module 2, power amplifier module 3, power filtering module 5, feedback protection module 6, output filtration module 7, display module 8 adopt and are provided with separately or two kinds and two or more combination setting.Be that above-mentioned module can be made into discrete single component, any a plurality of discrete assemblies that are combined to form in the perhaps above-mentioned module, operating personnel can be combined into the partial discharge test power supply with each discrete assembly in the testing ground like this.
Because the utilization of technique scheme, the utility model compared with prior art has following advantage: have that the scope of application is wide, antijamming capability strong, to the little advantage of product to be tested influence.
Below only be concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, or any to move mode dull and stereotyped described in the utility model, all drop within the utility model rights protection scope.
Claims (6)
1. three-phase partial discharge test supply unit is characterized in that: comprise be used for will input the three-phase electricity rectification be galvanic power supply control module (1), be used for regulating and controlling module (2), the power amplifier module (3) of the adjustable sine wave of generated frequency and magnitude of voltage; Described power supply control module (1) output terminal is connected with described power amplifier module (3) power access end, and described regulating and controlling module (2) output terminal is connected with the sinusoidal wave incoming end of described power amplifier module (3); During work, described power supply control module (1) output as the direct current of power supply to power amplifier module (3), described regulating and controlling module (2) sine wave output is to power amplifier module (3), described power amplifier module (3) is used for the sinewave output after amplifying to product to be tested (4), described power supply control module (1) comprises thyristor-controlled molding piece (11) and is used for the three-phase electricity rectification module (12) that carries out rectification and filtering to input, and described thyristor-controlled molding piece (11) is used to control the size of the charging current of the switch of the brilliant lock of rectification of described rectification module (12) and described rectification module (12) output.
2. three-phase partial discharge test supply unit according to claim 1, it is characterized in that: described power supply control module (1) and two-way connection of described regulating and controlling module (2), when the sine voltage signal of described regulating and controlling module (2) output is the brilliant lock of null value and described power supply control module (1) when being in opening, described regulating and controlling module (2) sine wave output.
3. three-phase partial discharge test supply unit according to claim 2; it is characterized in that: it also comprises feedback protection module (6); described power amplifier module (3), feedback protection module (6), regulating and controlling module (2) are formed first backfeed loop (9); described feedback protection module (6) is gathered the also output signal of processing power amplification module (3); described regulating and controlling module (2) is made adjusting according to the output of feedback protection module (6), makes the sine wave of power amplifier module (3) output voltage stabilization.
4. three-phase partial discharge test supply unit according to claim 1; it is characterized in that: it also comprises feedback protection module (6); described power amplifier module (3), feedback protection module (6), power supply control module (1) form second backfeed loop (10); described feedback protection module (6) is gathered the also output signal of processing power amplification module (3); described power supply control module (1) is made adjusting according to the output of feedback protection module (6), makes the sine wave of power amplifier module (3) outputting current steadily.
5. according to claim 3 or 4 described three-phase partial discharge test supply units, it is characterized in that: described power supply control module (1), regulating and controlling module (2), power amplifier module (3), feedback protection module (6) are provided with separately or two kinds and two or more combination setting.
6. three-phase partial discharge test supply unit according to claim 1 is characterized in that: it also comprises the display module (8) of the voltage that is used for showing the sine wave export described product to be tested (4) to, frequency, current value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920255228XU CN201527437U (en) | 2009-11-20 | 2009-11-20 | Three-phase partial discharge test power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920255228XU CN201527437U (en) | 2009-11-20 | 2009-11-20 | Three-phase partial discharge test power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201527437U true CN201527437U (en) | 2010-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920255228XU Expired - Lifetime CN201527437U (en) | 2009-11-20 | 2009-11-20 | Three-phase partial discharge test power supply device |
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| CN (1) | CN201527437U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076173A (en) * | 2012-09-29 | 2014-10-01 | 苏州华电电气股份有限公司 | High frequency power-inputted non-partial discharge ultra-high voltage DC high voltage generation device |
| CN104330599A (en) * | 2014-10-22 | 2015-02-04 | 广东电网有限责任公司电力科学研究院 | Partial-discharge ultrahigh-frequency signal simulation source |
-
2009
- 2009-11-20 CN CN200920255228XU patent/CN201527437U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076173A (en) * | 2012-09-29 | 2014-10-01 | 苏州华电电气股份有限公司 | High frequency power-inputted non-partial discharge ultra-high voltage DC high voltage generation device |
| CN104330599A (en) * | 2014-10-22 | 2015-02-04 | 广东电网有限责任公司电力科学研究院 | Partial-discharge ultrahigh-frequency signal simulation source |
| CN104330599B (en) * | 2014-10-22 | 2017-05-03 | 广东电网有限责任公司电力科学研究院 | Partial-discharge ultrahigh-frequency signal simulation source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SUZHOU HUADIAN ELECTRIC CO., LTD. Free format text: FORMER NAME: SUZHOU HUADIAN ELECTRIC TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Good East Industrial Park Wuzhong Economic Development Zone Suzhou city Jiangsu province 215128 Pu Road No. 255 Patentee after: Suzhou Huadian Electric Co., Ltd. Address before: Good East Industrial Park Wuzhong Economic Development Zone Suzhou city Jiangsu province 215128 Pu Road No. 255 Patentee before: Suzhou Huadian Electric Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100714 |
|
| CX01 | Expiry of patent term |