CN204389630U - A kind of jamproof Portable partial discharge detector - Google Patents
A kind of jamproof Portable partial discharge detector Download PDFInfo
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- CN204389630U CN204389630U CN201320359911.4U CN201320359911U CN204389630U CN 204389630 U CN204389630 U CN 204389630U CN 201320359911 U CN201320359911 U CN 201320359911U CN 204389630 U CN204389630 U CN 204389630U
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Abstract
The utility model discloses a kind of jamproof Portable partial discharge detector, comprise insulated switch and CPU, also comprise capacitive coupled sensors, uhf sensor, signal processing unit, noise recognizing unit, data acquisition unit, data display unit, storage unit, described capacitive coupled sensors is all connected with signal amplification circuit with uhf sensor, and signal amplification circuit is connected with CPU by signal processing unit, noise recognizing unit, data acquisition unit successively; Processor is connected with data display unit, storage unit respectively.The utility model is small and exquisite is convenient to mobile carrying flexibly, and the test product scope of have route, the noise recognizing unit of the special raising linearity, thus antijamming capability is strong, highly sensitive, amplifying circuit dynamic range large, testing is wide, easy and simple to handle.
Description
Technical field
The utility model relates to a kind of detector, is specifically related to a kind of jamproof Portable partial discharge detector.
Background technology
Shelf depreciation belongs to the electrical equipment electric discharge that the complete short circuit of electrode can not be made to get up, and the amplitude of this electric discharge is usually all very little, but determines to make insulating property constantly decline, finally may causing trouble.Shelf depreciation normally causes due to following reason: at the metallic particles produced and leave in installation process, the mobile electric discharge caused under the effect of electric field; The bubble that epoxy resins insulation is residual in casting process; The most advanced and sophisticated electric discharge produced; The electric discharge that insulating surface electrically conductive particles causes; The electric discharge that support member loose contact causes.Shelf depreciation is the parameter that reflection Transformer Insulation Aging and fault are the sensitiveest, is also the key factor accelerating electrical apparatus insulation poor quality.Partial dis-charge activity occur time, the electromagnetic wave within the scope of superfrequency UHF can be produced, electromagnetic wave can by insulation course from external detection to.The electromagnetic wave that gas-insulated switchgear Partial Discharge Detection is exactly employing detection exterior antenna is usually evaluated, but the sensitivity of this method is relatively low, and is subject to external electromagnetic wave interference.And the Partial discharge detector of a lot of on-line checkingi can only be fixed on the use of a certain position, or volume is comparatively large, heavier-weight, is unfavorable for that on-the-spot movement uses, has inconvenience in practical operation.
Utility model content
For above-mentioned prior art, the technical problems to be solved in the utility model is: overcome existing discharge examination device sensitivity low, be subject to external interference, and be unfavorable for on-the-spot mobile using, the shortcoming such as operation inconvenience.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
Jamproof Portable partial discharge detector, comprise signal processing unit, display unit, insulated switch and CPU, it is characterized in that, also comprise capacitive coupled sensors, uhf sensor, signal processing unit, noise recognizing unit, data acquisition unit, storage unit, described capacitive coupled sensors is all connected with signal amplification circuit with uhf sensor, and signal amplification circuit is connected with CPU by signal processing unit, noise recognizing unit, data acquisition unit successively, processor is connected with data display unit, storage unit respectively, described signal processing unit comprises signal filtering subelement, raising linearly degree unit, Modulation recognition subelement and A/D and changes subelement, data display unit is used for real-time display measurement data, comprises peak values in real time display, average data display in real time, the display of real-time phase data, storage unit is used for storage failure data, data display unit shows with the form of numeral or X-Y scheme or three-dimensional plot, data display unit comprises waveform oscilloscope and multifunctional digital table, described capacitive coupled sensors gathers electromagnetic wave transient earth voltage and transfers electric signal to, uhf sensor gathers ultrasound wave and transfers electric signal to, the electric signal collected amplifies by signal amplification circuit, signal processing unit processes electric signal and raising linearly degree unit in signal processing unit is offset distortion, through noise recognizing unit, identifying processing is carried out to noise interferences again, electric signal after process is sent to processor CPU after collecting unit collection, processor CPU controls display unit display, and the fault data gathered is stored in the memory unit.
Compared with prior art, the utility model has following beneficial effect:
This instrument is small and exquisite is convenient to mobile carrying flexibly, and have special noise recognizing unit, thus antijamming capability is strong, highly sensitive; Amplifying circuit dynamic range test product scope that is large, test is wide, easy and simple to handle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and the specific embodiments, the utility model will be further described.
As shown in Figure 1, the Portable partial discharge detector that interference performance of the present utility model is strong is applicable to the quantitative test to the type approval test of high-voltage product, delivery test, new product development test, motor, mutual inductor, cable, sleeve pipe, capacitor, transformer, lightning arrester, switch and other High-Voltage Electrical Appliances shelf depreciation in electric system, the fine defects of tested product inside can be tested, accident prevention in bud, decrease the probability had an accident in use procedure.It comprises insulated switch and CPU, also comprise capacitive coupled sensors, uhf sensor, signal processing unit, noise recognizing unit, data acquisition unit, data display unit, storage unit, described capacitive coupled sensors is all connected with signal amplification circuit with uhf sensor, and signal amplification circuit is connected with CPU by signal processing unit, noise recognizing unit, data acquisition unit successively; Processor is connected with data display unit, storage unit respectively.The utility model gathers shelf depreciation by two kinds of modes: gather electromagnetic wave transient earth voltage by capacitive coupled sensors, ultrasound wave is gathered by ultrasonic sensor, by signal amplification circuit, the feeble signal collected is amplified, processed by the signal of signal processing unit to collection and by improving linearly degree unit, distortion offset, after becoming suitable electric signal, through noise recognizing unit, identifying processing is carried out to undesired signals such as noises again, electric signal after process is sent to processor CPU after collecting unit collection, processor CPU controls display unit display, and the fault data gathered is stored in the memory unit.
Claims (1)
1. a jamproof Portable partial discharge detector, comprise signal processing unit, display unit, insulated switch and CPU, it is characterized in that, also comprise capacitive coupled sensors, uhf sensor, signal processing unit, noise recognizing unit, data acquisition unit, storage unit, described capacitive coupled sensors is all connected with signal amplification circuit with uhf sensor, and signal amplification circuit is connected with CPU by signal processing unit, noise recognizing unit, data acquisition unit successively, processor is connected with data display unit, storage unit respectively, described signal processing unit comprises signal filtering subelement, raising linearly degree unit, Modulation recognition subelement and A/D and changes subelement, data display unit is used for real-time display measurement data, comprises peak values in real time display, average data display in real time, the display of real-time phase data, storage unit is used for storage failure data, data display unit shows with the form of numeral or X-Y scheme or three-dimensional plot, data display unit comprises waveform oscilloscope and multifunctional digital table, described capacitive coupled sensors gathers electromagnetic wave transient earth voltage and transfers electric signal to, uhf sensor gathers ultrasound wave and transfers electric signal to, the electric signal collected amplifies by signal amplification circuit, signal processing unit processes electric signal and raising linearly degree unit in signal processing unit is offset distortion, through noise recognizing unit, identifying processing is carried out to noise interferences again, electric signal after process is sent to processor CPU after collecting unit collection, processor CPU controls display unit display, and the fault data gathered is stored in the memory unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320359911.4U CN204389630U (en) | 2013-06-21 | 2013-06-21 | A kind of jamproof Portable partial discharge detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320359911.4U CN204389630U (en) | 2013-06-21 | 2013-06-21 | A kind of jamproof Portable partial discharge detector |
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| Publication Number | Publication Date |
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| CN204389630U true CN204389630U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320359911.4U Expired - Fee Related CN204389630U (en) | 2013-06-21 | 2013-06-21 | A kind of jamproof Portable partial discharge detector |
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| CN (1) | CN204389630U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459247A (en) * | 2018-03-19 | 2018-08-28 | 浙江图维科技股份有限公司 | A kind of high-voltage cable joint partial discharge detection position indicator and partial discharge detection localization method |
| CN111521916A (en) * | 2020-05-09 | 2020-08-11 | 中国电建集团华东勘测设计研究院有限公司 | Generator partial discharge measuring device and measuring method |
-
2013
- 2013-06-21 CN CN201320359911.4U patent/CN204389630U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459247A (en) * | 2018-03-19 | 2018-08-28 | 浙江图维科技股份有限公司 | A kind of high-voltage cable joint partial discharge detection position indicator and partial discharge detection localization method |
| CN111521916A (en) * | 2020-05-09 | 2020-08-11 | 中国电建集团华东勘测设计研究院有限公司 | Generator partial discharge measuring device and measuring method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20190621 |