CN202737754U - Power supply apparatus for partial discharge test - Google Patents
Power supply apparatus for partial discharge test Download PDFInfo
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- CN202737754U CN202737754U CN 201220370192 CN201220370192U CN202737754U CN 202737754 U CN202737754 U CN 202737754U CN 201220370192 CN201220370192 CN 201220370192 CN 201220370192 U CN201220370192 U CN 201220370192U CN 202737754 U CN202737754 U CN 202737754U
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- power amplifier
- filter
- partial discharge
- module
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Abstract
The utility model discloses a power supply apparatus for a partial discharge test. The power supply apparatus comprises a rectification filter, a power amplifier, an output filer, and feedback protection module, a control regulation module and a rectification control module, wherein an output terminal of the rectification filter is connected with a first input terminal of the power amplifier; a first output terminal of the power amplifier is connected with the output filter; a second output terminal of the power amplifier is connected with an input terminal of the feedback protection module; a first output terminal of the feedback protection module is connected with a second input terminal of the power amplifier through the control regulation module; and a second output terminal of the feedback protection module is connected with a second output terminal of the rectification filter through the rectification control module. The power supply apparatus has small quantity of partial discharge and stable output waveform, is low in degree of distortion and small in volume.
Description
Technical field
The utility model relates to the partial discharge test power technique fields, particularly relates to a kind of supply unit of partial discharge test.
Background technology
Partial discharge refers to the breakdown electrical discharge of part in the apparatus insulated system, and this discharge can occur near the conductor, also can occur in other position.Whether whether partial discharge test be to exist discharge and discharge to exceed standard for definite insulated article, determines partial discharge initial sum extinction voltage, thereby find defective and fault that test product is hidden.
The supply unit of traditional partial discharge test mainly contains testing transformer, frequency tripling transformer and generating set etc., and its defective mainly contains: volume is large, the output waveform distortion is serious, partial discharge quantity is large, easily product to be tested is produced harmful effect.
The utility model content
Based on this, the utility model provides a kind of supply unit of partial discharge test, and this device partial discharge quantity is little, output waveform stable, the distortion factor is little, volume is little.
A kind of supply unit of partial discharge test comprises rectifier filter, power amplifier, output filter, feedback protection module, regulating and controlling module and rectification control module;
The output of described rectifier filter is connected with the power input of described power amplifier; The first output of described power amplifier is connected with described output filter;
The second output of described power amplifier is connected with the input of described feedback protection module; An output of described feedback protection module is connected with the power input of described power amplifier by described regulating and controlling module;
The second output of described feedback protection module is connected with described rectifier filter by described rectification control module.
Among embodiment, described power amplifier comprises four groups of power amplifier tubes at least therein, guarantees the power amplification effect to the sine wave signal of output.
Among embodiment, described power amplifier tube is installed in the radiator, can greatly improve radiating effect therein.
Among embodiment, described rectifier filter is full-bridge rectification standard-sized sheet circuit passband filter therein, and the power supply of avoiding producing because of rectification disturbs, and this filter is better for rectification and the filter effect of three-phase current, and current stabilization ripple deal is little.
Among embodiment, also comprise power-supply filter therein, the output of described power-supply filter is connected with the input of described rectifier filter, is used for the three-phase electricity of input is carried out filtering, removes the clutter of three-phase electricity.
Among embodiment, also comprise the output display module therein, described output display module is connected with the 3rd output of described output filter, is used for showing voltage, frequency, the current value of output single-phase electricity.
The supply unit of above-mentioned partial discharge test by the feedback protection to sine wave output, is regulated control to rectifier filter and power amplifier, and the single-phase electricity waveform stabilization of output, the distortion factor is little, partial discharge quantity is little, antijamming capability is strong; It is little, practical that each of this device forms device volume.
Description of drawings
Fig. 1 is the supply unit structural representation in one embodiment of the utility model partial discharge test.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
As shown in Figure 1, be the structural representation of supply unit in a preferred embodiment of the utility model partial discharge test, comprise rectifier filter 101, power amplifier 102, output filter 103, feedback protection module 104, regulating and controlling module 105, rectification control module 106;
In a preferred embodiment, also can comprise power-supply filter 100, the output of described power-supply filter 100 is connected with the input of described rectifier filter 101; The input of power-supply filter 100 is connected with the three phase worker power feeder ear, is used for the three-phase electricity of input is carried out filtering, removes the clutter of three-phase electricity; Three-phase electricity behind the removing clutter exports rectifier filter 101 to;
The output of described rectifier filter 101 is connected with the first input end of described power amplifier 102; Rectifier filter 101 is used for the three-phase current of input is carried out rectification processing and filtering processing, generates monophase current, and the sine wave output signal is to power amplifier 102; In a preferred embodiment, described rectifier filter 101 can adopt full-bridge rectification standard-sized sheet circuit passband filter, and the power supply of avoiding producing because of rectification disturbs, and this filter is better for rectification and the filter effect of three-phase current, and current stabilization ripple deal is little;
The first output of described power amplifier 102 is connected with described output filter 103; Power amplifier 102 is used for the single-phase electricity of input is carried out power amplification, is undertaken getting final product the output single-phase electricity to product to be tested after the filtering by output filter 103, guarantees that the office of output waveform is high-volume little, and antijamming capability is strong;
The second output of described power amplifier 102 is connected with the input of described feedback protection module 104; The first output of described feedback protection module 104 is connected with the second input of described power amplifier 102 by described regulating and controlling module 105;
The second output of described feedback protection module 104 is connected with the second input of described rectifier filter 101 by described rectification control module 106; The output signal of power amplifier 102 also feeds back to feedback protection module 104 and rectification control module 106, output signal by processing power amplifier 102, rectifier filter 101 is regulated control, when the electric current of the three-phase sine-wave of the output that detects power amplifier 102 is excessive, can adjust by the rectifying and wave-filtering parameter to rectifier filter 101, guarantee the stability of output waveform, prevent that over-current phenomenon avoidance from occuring;
In a preferred embodiment, described power amplifier 102 comprises four groups of power amplifier tubes at least, is used for assurance to the power amplification effect of the sine wave signal of output; Power amplifier tube all can be installed in the radiator, and radiating efficiency is improved greatly;
In a preferred embodiment, also comprise output display module 107, described output display module 107 is connected with the 3rd output of described output filter 102, for parameters such as the voltage that shows the output single-phase electricity, frequency, current values.
The supply unit of the utility model partial discharge test by the feedback protection to sine wave output, is regulated control to rectifier filter and power amplifier, and the single-phase electricity waveform stabilization of output, the distortion factor is little, partial discharge quantity is little, antijamming capability is strong; It is little, practical that each of this device forms device volume.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (6)
1. the supply unit of a partial discharge test is characterized in that, comprises rectifier filter, power amplifier, output filter, feedback protection module, regulating and controlling module and rectification control module;
The output of described rectifier filter is connected with the first input end of described power amplifier; The first output of described power amplifier is connected with described output filter;
The second output of described power amplifier is connected with the input of described feedback protection module; The first output of described feedback protection module is connected with the second input of described power amplifier by described regulating and controlling module;
The second output of described feedback protection module is connected with the second input of described rectifier filter by described rectification control module.
2. the supply unit of partial discharge test according to claim 1 is characterized in that, described power amplifier comprises four groups of power amplifier tubes at least.
3. the supply unit of partial discharge test according to claim 2 is characterized in that, described power amplifier tube is installed in the radiator.
4. the supply unit of partial discharge test according to claim 1 is characterized in that, described rectifier filter is full-bridge rectification standard-sized sheet circuit passband filter.
5. the supply unit of partial discharge test according to claim 1 is characterized in that, also comprises power-supply filter, and the output of described power-supply filter is connected with the input of described rectifier filter.
6. the supply unit of partial discharge test according to claim 1 is characterized in that, also comprises the output display module, and described output display module is connected with the 3rd output of described output filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220370192 CN202737754U (en) | 2012-07-27 | 2012-07-27 | Power supply apparatus for partial discharge test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220370192 CN202737754U (en) | 2012-07-27 | 2012-07-27 | Power supply apparatus for partial discharge test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202737754U true CN202737754U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220370192 Expired - Lifetime CN202737754U (en) | 2012-07-27 | 2012-07-27 | Power supply apparatus for partial discharge test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202737754U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107018394A (en) * | 2017-04-18 | 2017-08-04 | 深圳市迅光智能科技有限公司 | A kind of projector for showing cellphone information |
| CN112485624A (en) * | 2020-12-10 | 2021-03-12 | 广东电网有限责任公司 | Partial discharge-free test power supply circuit |
-
2012
- 2012-07-27 CN CN 201220370192 patent/CN202737754U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107018394A (en) * | 2017-04-18 | 2017-08-04 | 深圳市迅光智能科技有限公司 | A kind of projector for showing cellphone information |
| CN112485624A (en) * | 2020-12-10 | 2021-03-12 | 广东电网有限责任公司 | Partial discharge-free test power supply circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200922 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
|
| CX01 | Expiry of patent term |