CN103713240A - High-precision wireless cable partial discharge detector - Google Patents
High-precision wireless cable partial discharge detector Download PDFInfo
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- CN103713240A CN103713240A CN201210376098.1A CN201210376098A CN103713240A CN 103713240 A CN103713240 A CN 103713240A CN 201210376098 A CN201210376098 A CN 201210376098A CN 103713240 A CN103713240 A CN 103713240A
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Abstract
The invention discloses a high-precision wireless cable partial discharge detector. The detector comprises a signal acquisition module, a control module and a wireless communication module, wherein a signal output end of the signal acquisition module is connected with a signal input end of the control module, a data port of the control module is connected with a data port of the wireless communication module, the signal acquisition module comprises multiple high-frequency sensors, multiple program control amplifiers, multiple anti-aliasing filters and multiple A/D converters, and a control signal output end of the control module is connected with a control signal input end of each program control amplifier. According to the invention, a multi-channel data synchronization module composed of the high-frequency sensors, the program control amplifiers, the anti-aliasing filters and the A/D converters is adopted to enable the detector to have high detection precision, high detection speed and reliability; and meanwhile, the wireless communication module is adopted to enable the detector to have a wireless data transmission function.
Description
Technical field
The present invention relates to a kind of local cable detector, particularly relate to a kind of high precision cable shelf depreciation radio detector.
Background technology
Cable local discharge is the main cause that causes insulation ag(e)ing, is also important sign and the form of expression of insulation degradation, closely related with the deteriorated breakdown process of insulation material, can effectively reflect the fault of direct current cables insulation.Shelf depreciation is as the important indicator of evaluating cable insulation situation.Although the cable local discharge detector of at present domestic company's developments adopts Single-chip Controlling or bus industrial computer to control technically, accuracy of detection is not high, detection speed is low, volume is large, operation is used complexity, poor reliability, can not be realized Wireless Data Transmission.
Summary of the invention
The object of the invention is to provide in order to address the above problem that a kind of accuracy of detection is high, detection speed is fast, reliability is high and can realize the high precision cable shelf depreciation radio detector of wireless telecommunications.
The present invention is achieved by the following technical solutions:
A kind of high precision cable shelf depreciation radio detector, comprise LCD display, button, signal acquisition module, control module and wireless communication module, the signal output part of described signal acquisition module is connected with the signal input part of described control module, the FPDP of described control module is connected with the FPDP of described wireless communication module, described signal acquisition module comprises a plurality of high frequency sensors, a plurality of programmable amplifiers, a plurality of frequency overlapped-resistable filters and a plurality of A/D converter, described in each, the signal output part of high frequency sensors connects with the signal input part of corresponding described programmable amplifier, the signal output part of described programmable amplifier connects with the signal input part of corresponding described frequency overlapped-resistable filter, the signal output part of described frequency overlapped-resistable filter connects with the signal input part of corresponding described A/D converter, the control signal output terminal of described control module is connected with the control signal input end of programmable amplifier described in each.
Signal acquisition module consists of a plurality of passages that walk abreast, and each passage comprises input programmable amplifier, frequency overlapped-resistable filter and A/D converter.The enlargement factor of programmable amplifier can be set to 1,2,4 and 8 times by software; Frequency overlapped-resistable filter is quadravalence Butterworth type low-pass filter, and its cutoff frequency is set in 7.5MHz; Mould/number conversion chip adopts the AD9225 that the 12bit of AD company, high conversion rate are 25MS/s.
Further, described control module comprises local signal processor, local feature extraction apparatus, signal analysis diagnostor and sampling controller, the signal input part of described local signal collector connects from the signal input part of different A/D converter respectively, the signal output part of described local signal processor is connected with the signal input part of described local feature extraction apparatus, the signal output part of described local feature extraction apparatus is connected with the signal input part of described signal analysis diagnostor, the signal output part of described information analysis diagnostor is connected with the signal input part of described sampling controller, the control signal output terminal of described sampling controller is connected with the control signal input end of programmable amplifier described in each.
Further, described radio detector also comprises data-carrier store, and the signal input part of described data-carrier store is connected with the signal output part of described control module.
Further, described radio detector also comprises timing circuit, and described timing circuit is connected with described control module with power circuit.
The invention has the beneficial effects as follows:
The multi-channel synchronous data module that the present invention adopts high frequency sensors, programmable amplifier, frequency overlapped-resistable filter and A/D converter to form, makes detector have higher accuracy of detection, detection speed soon and reliability.Adopted wireless communication module simultaneously, made detector there is the function of Wireless Data Transmission.
Accompanying drawing explanation
Fig. 1 is the structural representation of high precision cable shelf depreciation radio detector of the present invention.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail:
As shown in Figure 1, high precision cable shelf depreciation radio detector of the present invention, comprise LCD display, button, signal acquisition module, control module and wireless communication module, the signal output part of described signal acquisition module is connected with the signal input part of described control module, the FPDP of described control module is connected with the FPDP of described wireless communication module, described signal acquisition module comprises a plurality of high frequency sensors, a plurality of programmable amplifiers, a plurality of frequency overlapped-resistable filters and a plurality of A/D converter, described in each, the signal output part of high frequency sensors connects with the signal input part of corresponding described programmable amplifier, the signal output part of described programmable amplifier connects with the signal input part of corresponding described frequency overlapped-resistable filter, the signal output part of described frequency overlapped-resistable filter connects with the signal input part of corresponding described A/D converter, the control signal output terminal of described control module is connected with the control signal input end of programmable amplifier described in each.
Signal acquisition module consists of a plurality of passages that walk abreast, and each passage comprises input programmable amplifier, frequency overlapped-resistable filter and A/D converter.The enlargement factor of programmable amplifier can be set to 1,2,4 and 8 times by software; Frequency overlapped-resistable filter is quadravalence Butterworth type low-pass filter, and its cutoff frequency is set in 7.5MHz; Mould/number conversion chip adopts the AD9225 that the 12bit of AD company, high conversion rate are 25MS/s.
Described control module comprises local signal processor, local feature extraction apparatus, signal analysis diagnostor and sampling controller, the signal input part of described local signal collector connects from the signal input part of different A/D converter respectively, the signal output part of described local signal processor is connected with the signal input part of described local feature extraction apparatus, the signal output part of described local feature extraction apparatus is connected with the signal input part of described signal analysis diagnostor, the signal output part of described information analysis diagnostor is connected with the signal input part of described sampling controller, the control signal output terminal of described sampling controller is connected with the control signal input end of programmable amplifier described in each.
Described radio detector also comprises data-carrier store, and the signal input part of described data-carrier store is connected with the signal output part of described control module.Described radio detector also comprises timing circuit, and described timing circuit is connected with described control module with power circuit.
Claims (4)
1. a high precision cable shelf depreciation radio detector, comprise LCD display and button, it is characterized in that: also comprise signal acquisition module, control module and wireless communication module, the signal output part of described signal acquisition module is connected with the signal input part of described control module, the FPDP of described control module is connected with the FPDP of described wireless communication module, described signal acquisition module comprises a plurality of high frequency sensors, a plurality of programmable amplifiers, a plurality of frequency overlapped-resistable filters and a plurality of A/D converter, described in each, the signal output part of high frequency sensors connects with the signal input part of corresponding described programmable amplifier, the signal output part of described programmable amplifier connects with the signal input part of corresponding described frequency overlapped-resistable filter, the signal output part of described frequency overlapped-resistable filter connects with the signal input part of corresponding described A/D converter, the control signal output terminal of described control module is connected with the control signal input end of programmable amplifier described in each.
2. high precision cable shelf depreciation radio detector according to claim 1, it is characterized in that: described control module comprises local signal processor, local feature extraction apparatus, signal analysis diagnostor and sampling controller, the signal input part of described local signal collector connects from the signal input part of different A/D converter respectively, the signal output part of described local signal processor is connected with the signal input part of described local feature extraction apparatus, the signal output part of described local feature extraction apparatus is connected with the signal input part of described signal analysis diagnostor, the signal output part of described information analysis diagnostor is connected with the signal input part of described sampling controller, the control signal output terminal of described sampling controller is connected with the control signal input end of programmable amplifier described in each.
3. high precision cable shelf depreciation radio detector according to claim 1, is characterized in that: described radio detector also comprises data-carrier store, and the signal input part of described data-carrier store is connected with the signal output part of described control module.
4. high precision cable shelf depreciation radio detector according to claim 1, is characterized in that: described radio detector also comprises timing circuit, and described timing circuit is connected with described control module with power circuit.
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| CN201210376098.1A CN103713240A (en) | 2012-10-08 | 2012-10-08 | High-precision wireless cable partial discharge detector |
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| CN201210376098.1A CN103713240A (en) | 2012-10-08 | 2012-10-08 | High-precision wireless cable partial discharge detector |
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Cited By (5)
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| CN104459496A (en) * | 2014-12-19 | 2015-03-25 | 国家电网公司 | 220kV long cable voltage withstand test wireless control system and control method thereof |
| CN106125654A (en) * | 2016-08-29 | 2016-11-16 | 苏州盖恩茨电子科技有限公司 | A kind of Intelligent redundant controls formula signal picker |
| CN107942205A (en) * | 2017-09-20 | 2018-04-20 | 国网辽宁省电力有限公司检修分公司 | A kind of independent multichannel Analysis of Partial Discharge platform |
| CN112327216A (en) * | 2020-10-30 | 2021-02-05 | 广东至合交通科技有限公司 | Cable health state assessment device and method based on edge calculation |
| CN112417361A (en) * | 2020-10-29 | 2021-02-26 | 国网内蒙古东部电力有限公司经济技术研究院 | Integrative show processing apparatus of big data acquisition |
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Application publication date: 20140409 |