CN205384348U - Portable intelligent four -channel partial discharge detection appearance signal frequency changes leading module - Google Patents
Portable intelligent four -channel partial discharge detection appearance signal frequency changes leading module Download PDFInfo
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- CN205384348U CN205384348U CN201620100592.9U CN201620100592U CN205384348U CN 205384348 U CN205384348 U CN 205384348U CN 201620100592 U CN201620100592 U CN 201620100592U CN 205384348 U CN205384348 U CN 205384348U
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Abstract
The utility model discloses a portable intelligent four -channel partial discharge detection appearance signal frequency changes leading module, including signal selection switch, 3 way AMP amplifiers, no. 3 wave filters and a frequency converter, the signal selection switch is automatic selection switch or manual select switch, and select switch receives the signal that superfrequency UHF sensor, high frequency pulse current HFCT sensor and the transmission of ultrasonic wave AE sensor come, after enlargeing, signal AMP amplifier utilizes to correspond wave filter filtering, convert 1 into by frequency converter 100MHz's signal output, the signal after the conversion is shown and is calculated by the PC through detection, AD conversion, the utility model discloses the system complexity of can the office of letting putting the test reduces, can promote work efficiency, reduce test cost, reduce to use the degree of difficulty, and messenger office puts the test system and becomes and retrench more, and the integrated level is higher, realizes the purpose that cable detection achievement individual soldierization, lightweight equipped.
Description
Technical field
The utility model relates to a kind of partial discharge detection equipment, and specifically a kind of portable intelligent type four-way partial discharge detection instrument signal frequency changes preposition module.
Background technology
Along with domestic cityization develops, the continuous expansion of the growing and electrical network of electricity needs, high voltage, heavy in section power cable put into operation in a large number on transmission line of electricity；According to statistics, the weak link of cable run is on its cable connector annex, and such as cable connector and joint connecting box, this is bad often caused by manufacture craft and site operation is improper and the insulation defect that brings；To this end, as checking the best charged partial discharge detection means of the operating insulation status of cable run, it is possible to achieve to cable insulation state more comprehensively with tightened up supervision；Therefore, carry out the charged partial discharge detection about cable run work and use effective detection method, to ensureing that cable reliability service has great importance, generally, when carrying out the partial discharge detection of cable run, put produced signal properties due to office and be not quite similar, as high-frequency pulse current, electromagnetic wave, ultrasonic wave and electric wave, the principle of detection and sensor for unlike signal are not quite similar, also will be corresponding to going to use different Partial discharge signals to process main frame；It is different that the signal frequency that sensor collected is put in different offices, it is the most different that the Partial discharge signal used processes main frame, and in order to ensure the comprehensive of partial discharge detection, detection need to carry large number quipments every time, increase manpower and materials, and equipment purchase, operation, maintenance cost are the hugest；For these reasons, need the partial discharge detection equipment of prior art is improved improvement, partial discharge testing system for is carried out the improvement of cost degradation, high integration
Utility model content
The purpose of this utility model is that providing one that partial discharge detecting system can be made to become more simplifies, and integrated level higher portable intelligent type four-way partial discharge detection instrument signal frequency changes preposition module, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the following technical scheme of the utility model offer:
A kind of portable intelligent type four-way partial discharge detection instrument signal frequency changes preposition module, including signal selecting switch, 3 road AMP amplifiers, 3 path filters and a frequency converter, signal selecting switch is automatic selector switch or manual selection switch, automatic selector switch receives superfrequency type UHF sensor, the signal that high-frequency pulse current HFCT sensor and ultrasonic wave AE sensor passes are come, signal utilizes filter filtering after AMP amplifier amplifies, the signal output of 1-100MHz is converted to by frequency converter, signal after conversion is through detection, A/D conversion is shown by PC and calculates.
As further program of the utility model: the specification of described AMP amplifier is respectively 0.3-3GHz, 1-100MHz, 20-200kHz；Described wave filter is respectively high-pass filter, bandpass filter and low pass filter, and the conversion range of described frequency converter is 1-100MHz.
As the utility model further scheme: the AMP amplifier out of described 0.3-3GHz is connected with high-pass filter；The AMP amplifier of 1-100MHz is connected with bandpass filter；The AMP amplifier of 20-200kHz is connected with low pass filter.
As the utility model further scheme: described superfrequency type UHF sensor detection frequency is 0.3-3GHz, between superfrequency type UHF sensor and signal selecting switch, high-pass filter is set, filter range >=the 300MHz of high-pass filter, the signal of superfrequency type UHF sensor is through the AMP amplifier of signal selecting switch transmission to 0.3-3GHz.
As the utility model further scheme: described high-frequency pulse current HFCT sensor detection frequency is 1-100MHz, arranging bandpass filter between high-frequency pulse current HFCT sensor and signal selecting switch, the filter range of bandpass filter is 1-100MHz；The signal of high-frequency pulse current HFCT sensor is through the AMP amplifier of signal selecting switch transmission to 1-100MHz.
As the utility model further scheme: the detection frequency of described ultrasonic wave AE sensor is 20-200kHz, arranges low pass filter between ultrasonic wave AE sensor and signal selecting switch, the filter range ＜ 200kHz of low pass sensor；The signal of ultrasonic wave AE sensor is through the AMP amplifier of signal selecting switch transmission to 20-200kHz.
Compared with prior art, the beneficial effects of the utility model are: the utility model is by by superfrequency sensor, high-frequency electrical pulses flow sensor, the detection frequency range that the different frequency range signal integration that ultrasonic sensor is collected to is unified goes to process through a set of processing system again, partial discharge detecting system is made more to simplify, but the performance of original three cover system superpositions is had, while reducing system operation easier, reduce again system cost, make whole system integrated level higher, the use of convenient site operation personnel, the utility model can the office of allowing put test system complexity reduce, operating efficiency can be promoted, reduce testing cost, reduce and use difficulty, also make partial discharge testing system for become more simplify, integrated level is higher, achieve cable detection work individual soldier and disguise standby purpose, lightweight equipment technology is made to reach a kind of new level.
Accompanying drawing explanation
Fig. 1 is the partial discharge detecting system block diagram using the preposition module of the utility model.
Fig. 2 is the partial discharge detecting system block diagram using the most selected aspect.
Fig. 3 is the partial discharge detecting system block diagram using the most selected aspect.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the technical scheme of this patent is described in more detail.
Refer to Fig. 1-3, a kind of portable intelligent type four-way partial discharge detection instrument signal frequency changes preposition module, including signal selecting switch, 3 road AMP amplifiers, 3 path filters and a frequency converter, described signal selecting switch is automatic selector switch or manual selection switch；The specification of described AMP amplifier is respectively 0.3-3GHz, 1-100MHz, 20-200kHz；Described wave filter is respectively high-pass filter, bandpass filter and low pass filter, and the conversion range of described frequency converter is 1-100MHz；Automatic selector switch receives the signal that superfrequency type UHF sensor, high-frequency pulse current HFCT sensor and ultrasonic wave AE sensor passes are come, signal utilizes filter filtering after AMP amplifier amplifies, be converted to the signal output of 1-100MHz by frequency converter, the signal after conversion is changed and is shown by PC through detection, A/D and calculate；The AMP amplifier out of described 0.3-3GHz is connected with high-pass filter；The AMP amplifier of 1-100MHz is connected with bandpass filter；The AMP amplifier of 20-200kHz is connected with low pass filter.
Described superfrequency type UHF sensor detection frequency is 0.3-3GHz, between superfrequency type UHF sensor and signal selecting switch, high-pass filter is set, filter range >=the 300MHz of high-pass filter, the signal of superfrequency type UHF sensor is through the AMP amplifier of signal selecting switch transmission to 0.3-3GHz.
Described high-frequency pulse current HFCT sensor detection frequency is 1-100MHz, arranges bandpass filter between high-frequency pulse current HFCT sensor and signal selecting switch, and the filter range of bandpass filter is 1-100MHz；The signal of high-frequency pulse current HFCT sensor is through the AMP amplifier of signal selecting switch transmission to 1-100MHz.
The detection frequency of described ultrasonic wave AE sensor is 20-200kHz, arranges low pass filter between ultrasonic wave AE sensor and signal selecting switch, the filter range ＜ 200kHz of low pass sensor；The signal of ultrasonic wave AE sensor is through the AMP amplifier of signal selecting switch transmission to 20-200kHz.
Embodiment 1
Referring to Fig. 3, described signal selecting switch is automatic selector switch, and the signal of superfrequency type UHF sensor is delivered to amplitude door A and automatic selector switch after high pass filter filters respectively；The signal of high-frequency pulse current HFCT sensor is delivered to amplitude door B and automatic selector switch after band-pass filter respectively；Amplitude door C and automatic selector switch it is delivered to respectively after the low-pass filtered device of signal of ultrasonic wave AE sensor；Each road signal is AD converted and is transferred to MCU1 via magnitude demodulator loop by A/D module and pre-processes, identify that by MCU1 the type accessing sensor controls the corresponding path of automatic selector switch gating by control line again, entering signal frequency changes preposition module, through being changed its unified signal being converted to 1-100MHz by frequency after amplifying filtering again by corresponding A MP amplifier in signal frequency changes preposition module, signal is delivered to deliver to system PC after MCU2 processes and preserves through detection module and A/D conversion chip and is shown and calculate, realize the purpose of automatic identification sensor and partial discharge detection.
Embodiment 2
Referring to Fig. 2, described signal selecting switch is manual selection switch, and the signal of superfrequency type UHF sensor is delivered to manual selection switch after high pass filter filters；The signal of high-frequency pulse current HFCT sensor is delivered to manual selection switch after band-pass filter；It is delivered to manual selection switch after the low-pass filtered device of signal of ultrasonic wave AE sensor；Carry out the corresponding path of Non-follow control gating, entering signal frequency changes preposition module, through being changed its unified signal being converted to 1-100MHz by frequency after amplifying filtering again by corresponding A MP amplifier in signal frequency changes preposition module, signal is delivered to deliver to system PC after MCU processes and preserves through detection module and A/D conversion chip and is shown and calculate, it is achieved the purpose of partial discharge detection.
In the utility model, three kinds of different frequency signals are through signal selecting switch, arrive AMP amplifier, the most after filtering, the signal of each frequency band is through special frequency conversion, it is converted into the signal being available for the 1-100MHz that test system processes, this part is signal frequency of the present utility model and changes preposition module, after partial discharge testing system for adds this module, the system complexity that just can allow test reduces, operating efficiency can be promoted, reduce testing cost, reduce and use difficulty, also make partial discharge testing system for become more simplify, integrated level is higher, achieve cable detection work individual soldier and disguise standby purpose, lightweight equipment technology is made to reach a kind of new level.
Claims (6)
1. a portable intelligent type four-way partial discharge detection instrument signal frequency changes preposition module, it is characterized in that: include signal selecting switch, 3 road AMP amplifiers, 3 path filters and a frequency converter, signal selecting switch is automatic selector switch or manual selection switch, automatic selector switch receives superfrequency type UHF sensor, the signal that high-frequency pulse current HFCT sensor and ultrasonic wave AE sensor passes are come, signal utilizes filter filtering after AMP amplifier amplifies, the signal output of 1-100MHz is converted to by frequency converter, signal after conversion is through detection, A/D conversion is shown by PC and calculates.
Portable intelligent type four-way partial discharge detection instrument signal frequency the most according to claim 1 changes preposition module, it is characterised in that the specification of described AMP amplifier is respectively 0.3-3GHz, 1-100MHz, 20-200kHz；Described wave filter is respectively high-pass filter, bandpass filter and low pass filter, and the conversion range of described frequency converter is 1-100MHz.
Portable intelligent type four-way partial discharge detection instrument signal frequency the most according to claim 2 changes preposition module, it is characterised in that the AMP amplifier out of described 0.3-3GHz is connected with high-pass filter；The AMP amplifier of 1-100MHz is connected with bandpass filter；The AMP amplifier of 20-200kHz is connected with low pass filter.
4. change preposition module according to the arbitrary described portable intelligent type four-way partial discharge detection instrument signal frequency of claim 1-2, it is characterized in that, described superfrequency type UHF sensor detection frequency is 0.3-3GHz, between superfrequency type UHF sensor and signal selecting switch, high-pass filter is set, filter range >=the 300MHz of high-pass filter, the signal of superfrequency type UHF sensor is through the AMP amplifier of signal selecting switch transmission to 0.3-3GHz.
5. change preposition module according to the arbitrary described portable intelligent type four-way partial discharge detection instrument signal frequency of claim 1-2, it is characterized in that, described high-frequency pulse current HFCT sensor detection frequency is 1-100MHz, arranging bandpass filter between high-frequency pulse current HFCT sensor and signal selecting switch, the filter range of bandpass filter is 1-100MHz；The signal of high-frequency pulse current HFCT sensor is through the AMP amplifier of signal selecting switch transmission to 1-100MHz.
Portable intelligent type four-way partial discharge detection instrument signal frequency the most according to claim 1 changes preposition module, it is characterized in that, the detection frequency of described ultrasonic wave AE sensor is 20-200kHz, low pass filter is set between ultrasonic wave AE sensor and signal selecting switch, the filter range ＜ 200kHz of low pass sensor；The signal of ultrasonic wave AE sensor is through the AMP amplifier of signal selecting switch transmission to 20-200kHz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620100592.9U CN205384348U (en) | 2016-02-01 | 2016-02-01 | Portable intelligent four -channel partial discharge detection appearance signal frequency changes leading module |
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| CN201620100592.9U CN205384348U (en) | 2016-02-01 | 2016-02-01 | Portable intelligent four -channel partial discharge detection appearance signal frequency changes leading module |
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| CN205384348U true CN205384348U (en) | 2016-07-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548846A (en) * | 2016-02-01 | 2016-05-04 | 广州智丰电气科技有限公司 | Signal frequency conversion preposition module of portable intelligent four-channel partial discharge detector |
| CN114280432A (en) * | 2021-11-24 | 2022-04-05 | 浙江新图维电子科技有限公司 | Cable partial discharge monitoring equipment and method |
-
2016
- 2016-02-01 CN CN201620100592.9U patent/CN205384348U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548846A (en) * | 2016-02-01 | 2016-05-04 | 广州智丰电气科技有限公司 | Signal frequency conversion preposition module of portable intelligent four-channel partial discharge detector |
| CN114280432A (en) * | 2021-11-24 | 2022-04-05 | 浙江新图维电子科技有限公司 | Cable partial discharge monitoring equipment and method |
| CN114280432B (en) * | 2021-11-24 | 2023-10-13 | 浙江新图维电子科技有限公司 | Cable partial discharge monitoring equipment and method |
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