CN203849364U - Partial discharge detector used for detecting insulation electric appliance - Google Patents
Partial discharge detector used for detecting insulation electric appliance Download PDFInfo
- Publication number
- CN203849364U CN203849364U CN201420215683.8U CN201420215683U CN203849364U CN 203849364 U CN203849364 U CN 203849364U CN 201420215683 U CN201420215683 U CN 201420215683U CN 203849364 U CN203849364 U CN 203849364U
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- China
- Prior art keywords
- partial discharge
- discharge detector
- transformer
- detecting
- electric appliance
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- Expired - Fee Related
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- Testing Relating To Insulation (AREA)
Abstract
The utility model relates to a partial discharge detector, and particularly relates to a partial discharge detector used for detecting an insulation electric appliance. The partial discharge detector used for detecting the insulation electric appliance comprises a transformer, a protective resistor, a coupling capacitor, a capacitive voltage divider, a waveform display, a voltmeter and a control power supply, wherein the transformer is electrically connected with the waveform display, the voltmeter and the control power supply, the protective resistor is electrically connected between the transformer and the coupling capacitor, the capacitive voltage divider is connected to the coupling capacitor through a cable, the capacitive voltage divider is further connected to a test piece, and the test piece is placed in an insulation box body. The partial discharge detector provided by the utility model has the advantages of small size and light weight, and is convenient to carry. The partial discharge detector is a powerful auxiliary tool for researching and developing novel high-voltage electrical products and improving the product quality, and is also an effective test instrument for judging whether equipment are normal or not on site.
Description
Technical field
The utility model relates to Partial discharge detector, especially a kind of Partial discharge detector of detecting for insulated electrical equipment.
Background technology
Ultrasound wave is the sound that cannot be heard by people's ear, in other words, higher than frequency more than 20KHz, is the sound that people's ear cannot relate to.Exactly because hyperacoustic this characteristic, utilizes this physical characteristics of ultrasound wave to carry out interleaving techniques diagnosis to equipment state, guarantees correct trend and the management of repair based on condition of component.
While producing shelf depreciation under trial voltage, through coupling capacitance Ck, produce pulse current, by input block, pick up to obtain pulse signal, after the preposition amplification of low noise, filter amplifier are selected required frequency band and main amplification, on the elliptical scanning baseline of oscillography screen, demonstrate discharge pulse, also deliver to peak value of pulse table (table of logarithm) and show its peak value simultaneously.The working time of peak value of pulse table in each cycle of time window unit controls trial voltage, and during this period of time the demonstration of display screen is highlighted, width and position can change, and have further strengthened antijamming capability.
PD meter is applicable to motor, transformer, mutual inductor, cable, sleeve pipe, electric capacitor, high-voltage switch gear, the partial discharge quantity test of the various high-voltage capacitors such as Zinc-Oxide Arrester, PD meter adopts giant-screen oscillatron, can clear observation discharge waveform, two gauge outfits show discharge capacities, PD meter has digital watch and pointer gauge outfit to show PC value simultaneously.Can be more perfect in the PD meter design of existing insulated electrical equipment, using can be more convenient, can be more reliable in performance.
Utility model content
The technical problems to be solved in the utility model is: based on the problems referred to above, provide a kind of Partial discharge detector of detecting for insulated electrical equipment.
The utility model solves the technical scheme that its technical matters adopts: a kind of Partial discharge detector of detecting for insulated electrical equipment; comprise transformer, protective resistance, coupling condenser, capacitive divider, waveform oscilloscope, voltage table and control power supply; described transformer is electrically connected to waveform oscilloscope, voltage table and control power supply; described protective resistance is electrically connected between transformer and coupling condenser; described capacitive divider is connected on coupling condenser by cable; on capacitive divider, be also connected with test block, described test block is placed in insulation box.
Further, described waveform oscilloscope and voltage table are all placed on testing table.Waveform oscilloscope and voltage table are all placed on testing table, and one carrys out handled easily personnel operation, and two can prevent dust, play a protective role.
Further, on described insulation box, offer opening.On insulation box, offer opening, be convenient to putting into of test block, design insulated case can prevent the interference of outer bound pair test block, guarantees the accuracy of test.
The beneficial effects of the utility model are: the utlity model has little, the lightweight advantage of volume, and easy to carry, it is research, development of new high voltage electric product and the strong aid that improves the quality of products, is also the Validity Test instrument that whether normal on-the-spot judgment device is.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
In figure: 1. transformer, 2. protective resistance, 3. coupling condenser, 4. capacitive divider, 5. waveform oscilloscope, 6. voltage table, 7. controls power supply, 8. insulation box, 9. testing table, 81. openings.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model is only described in a schematic way, so it only show the formation relevant with the utility model.
A kind of Partial discharge detector of detecting for insulated electrical equipment as shown in Figure 1; comprise transformer 1, protective resistance 2, coupling condenser 3, capacitive divider 4, waveform oscilloscope 5, voltage table 6 and control power supply 7; transformer 1 is electrically connected to waveform oscilloscope 5, voltage table 6 and control power supply 7; protective resistance 2 is electrically connected between transformer 1 and coupling condenser 3; capacitive divider 4 is connected on coupling condenser 3 by cable; on capacitive divider 4, be also connected with test block, test block is placed in insulation box 8.
Further, waveform oscilloscope 5 and voltage table 6 are all placed on testing table 9.Waveform oscilloscope 5 and voltage table 6 are all placed on testing table 9, and one carrys out handled easily personnel operation, and two can prevent dust, play a protective role.
Further, on insulation box 8, offer opening 81.On insulation box 8, offer opening 81, be convenient to putting into of test block, design insulated case can prevent the interference of outer bound pair test block, guarantees the accuracy of test.
During concrete enforcement, test block is positioned in insulation box 8, control power supply 7 and purify Control experiment voltage, transformer 1 provides trial voltage and guarantees that self is without shelf depreciation for testing, coupling condenser 3 is coupled the discharge signal in system and offers waveform oscilloscope 5, and waveform oscilloscope 5 display part discharge signal waveforms are measured discharge capacity size simultaneously, voltage table 6 is measured high-pressure side voltage in real time, and measures its peak value and effective value.Wherein protective resistance 2 protection test devices preserve from breakdown in the situation that.Capacitive divider 4 provides measuring voltage for voltage table 6, and self is without shelf depreciation.
The above-mentioned foundation desirable embodiment of the present utility model of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this utility model technological thought, carry out various change and modification completely.The technical scope of this utility model is not limited to the content on instructions, must determine its technical scope according to claim scope.
Claims (3)
1. a Partial discharge detector of detecting for insulated electrical equipment, it is characterized in that: comprise transformer (1), protective resistance (2), coupling condenser (3), capacitive divider (4), waveform oscilloscope (5), voltage table (6) and control power supply (7), described transformer (1) and waveform oscilloscope (5), voltage table (6) and control power supply (7) are electrically connected to, described protective resistance (2) is electrically connected between transformer (1) and coupling condenser (3), described capacitive divider (4) is connected on coupling condenser (3) by cable, capacitive divider is also connected with test block on (4), described test block is placed in insulation box (8).
2. the Partial discharge detector of detecting for insulated electrical equipment according to claim 1, is characterized in that: described waveform oscilloscope (5) and voltage table (6) are all placed on testing table (9).
3. the Partial discharge detector of detecting for insulated electrical equipment according to claim 1, is characterized in that: on described insulation box (8), offer opening (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420215683.8U CN203849364U (en) | 2014-04-30 | 2014-04-30 | Partial discharge detector used for detecting insulation electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420215683.8U CN203849364U (en) | 2014-04-30 | 2014-04-30 | Partial discharge detector used for detecting insulation electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203849364U true CN203849364U (en) | 2014-09-24 |
Family
ID=51562365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420215683.8U Expired - Fee Related CN203849364U (en) | 2014-04-30 | 2014-04-30 | Partial discharge detector used for detecting insulation electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203849364U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730431A (en) * | 2014-07-23 | 2015-06-24 | 施周平 | Partial discharge detector for detection of insulated electrical equipment |
| CN108051711A (en) * | 2017-12-05 | 2018-05-18 | 国网浙江省电力公司检修分公司 | Solid insulation surface defect diagnostic method based on state Feature Mapping |
-
2014
- 2014-04-30 CN CN201420215683.8U patent/CN203849364U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730431A (en) * | 2014-07-23 | 2015-06-24 | 施周平 | Partial discharge detector for detection of insulated electrical equipment |
| CN108051711A (en) * | 2017-12-05 | 2018-05-18 | 国网浙江省电力公司检修分公司 | Solid insulation surface defect diagnostic method based on state Feature Mapping |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20150430 |
|
| EXPY | Termination of patent right or utility model |