CN2890942Y - Insulation part damage positioning detector for high voltage electric apparatus - Google Patents
Insulation part damage positioning detector for high voltage electric apparatus Download PDFInfo
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- CN2890942Y CN2890942Y CN 200620023740 CN200620023740U CN2890942Y CN 2890942 Y CN2890942 Y CN 2890942Y CN 200620023740 CN200620023740 CN 200620023740 CN 200620023740 U CN200620023740 U CN 200620023740U CN 2890942 Y CN2890942 Y CN 2890942Y
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Abstract
A high-voltage equipment insulating partial damage positioning detector belongs to the detecting equipment technical field for solving the problem of insulation fault positions detecting, which comprises a directional antenna, a piezoelectricity wafer, an electronic signals receiving circuit, an ultrasonic signals receiving circuit, a data processing circuit, and a display device, wherein the directional antenna connects with the electronic signals receiving circuit, and the piezoelectricity wafer connects with the ultrasonic signals receiving circuit. The electronic signals receiving circuit and the output terminal of the ultrasonic signals receiving circuit connect with the data processing circuit whose signals output terminal connects with the display device. The utility model utilizes the directional antenna to receive the electromagnetic signals radiated by the discharging section, and simultaneously utilizes the directional piezoelectricity wafer to receive partial ultrasonic signals. The data processing circuit analyzes the electronic and sound signals amplitude and offset time variations to ascertain the coordinates of X, Y and Z axes to confirm the positions of discharging positions.
Description
Technical field
The utility model relates to a kind of device that is used to detect high voltage electric equipment insulation fault position, belongs to the detection technique field.
Background technology
High voltage electric equipment is used very extensive in producing and living, shelf depreciation owing to there is insulation harm in mass defect or the operational process, can take place at these positions in a lot of high voltage electric equipments such as dry-type transformer, cable etc., quicken insulation degradation, form fault.The key of handling this type of problem is a fast detecting discharge position how, and does not still have simple and practical specialized equipment at present or instrument is determined discharge position, make maintenance, safeguard very difficult.Particularly only just can come out when high pressure because of this insulation fault, and under high pressure detect, detection instrument and operating personnel's safety becomes the obstacle that at first must solve again.Therefore designing and develop a kind of and equipment under test determine discharge position under contactless state device is the urgent task that the technician faces for the discharge fault of products such as fast detecting dry-type transformer, cable so that carry out on-call maintenance.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of easy to use, the high voltage electric equipment that can judge discharge position quickly and accurately insulation local damage position locator.
The technical scheme that addresses the above problem is:
A kind of high voltage electric equipment insulation local damage position locator, it is made up of directional antenna 1, piezoelectric chip 2, electric signal receiving circuit 3, ultrasonic signal receiving circuit 4, data processing circuit 5, display device 18, wherein, the signal output part of directional antenna 1 is connected with electric signal receiving circuit 3, the signal output part of piezoelectric chip 2 is connected with ultrasonic signal receiving circuit 4, the output terminal of electric signal receiving circuit 3 and ultrasonic signal receiving circuit 4 is connected data processing circuit 5, and the signal output part of data processing circuit 5 connects display device 18;
Described electric signal receiving circuit 3 is formed and is connected successively by pre-amplification circuit 8, filtering circuit 10, back level amplifying circuit 12;
Described ultrasonic signal receiving circuit 4 is formed and is connected successively by impedance inverter circuit 19, pre-amplification circuit 9, filtering circuit 11, back level amplifying circuit 13;
Described data processing circuit 5 is made up of A/D converter 14,15, storer 16, CPU, and they connect successively, and the input end of A/D converter 14,15 is connected with the output terminal of electric signal receiving circuit 3 with ultrasonic signal receiving circuit 4 respectively.
Above-mentioned high voltage electric equipment insulation local damage position locator, the pre-amplification circuit 8 of described electric signal receiving circuit 3, filtering circuit 10, back level amplifying circuit 12 are made up of transport and placing device U1, U2, U3, capacitor C 1, C2, C3, C4, inductance L 1, L2, transport and placing device U2 forms pre-amplification circuit 8, capacitor C 2, C3, inductance L 1, L2 form filtering circuit 10, and transport and placing device U3 forms back level amplifying circuit 12.
Above-mentioned high voltage electric equipment insulation local damage position locator, impedance inverter circuit 19 in the described ultrasonic signal receiving circuit 4, pre-amplification circuit 9, filtering circuit 11, back level amplifying circuit 13 are made up of transport and placing device U5, U6, U7, U8, capacitor C 5, C6, C7, C8, inductance L 3, L4 respectively, transport and placing device U5 forms impedance inverter circuit 20, transport and placing device U6 forms pre-amplification circuit 9, capacitor C 6, C7, inductance L 3, L4 form filtering circuit 11, and transport and placing device U7 forms back level amplifying circuit 13.
Above-mentioned high voltage electric equipment insulation local damage position locator, output terminal and A/D converter 14 at telecommunications receiving circuit 3 and ultrasonic signal receiving circuit 4, set up photoelectric conversion circuit 6 between 15 the input end respectively, 7, photoelectric conversion circuit 6,7 by electrical to optical converter D1, D2 and photoelectric commutator D3, D4 forms, electrical to optical converter D1, D2 is connected with the output terminal of electric signal receiving circuit 3 with ultrasonic signal receiving circuit 4 respectively, photoelectric commutator D3, D4 and A/D converter 14,15 input end is connected, electrical to optical converter D1, D2 and photoelectric commutator D3, connect by optical fiber GX between the D4.
Above-mentioned high voltage electric equipment insulation local damage position locator, described directional antenna 1 and piezoelectric chip 2 are encapsulated in the detecting head, and the front opening of detecting head is surrounded by metal shielding all around.
The utility model utilizes directional antenna to receive the office discharge magnetostatic wave signal of discharge position to space radiation, utilize directed piezoelectric chip office of acceptance to put ultrasonic signal simultaneously, again with electroacoustic signal after processing and amplifying, by data processing circuit electricity, acoustical signal amplitude and the time difference are changed and to analyze.The signal power that the comparison directional antenna receives can be determined X, the Y coordinate of point of discharge, and the signal that the comparison antenna receives and the mistiming of ultrasonic signal can be determined the Z axial coordinate, thereby can determine the three-dimensional space position at discharge position exactly.
Description of drawings
Fig. 1 is the utility model electricity theory diagram;
Fig. 2 is the utility model electrical schematic diagram;
Fig. 3 is the exploration operation synoptic diagram.
Mark is as follows among the figure: directional antenna 1, piezoelectric chip 2, electric signal receiving circuit 3, ultrasonic signal receiving circuit 4, data processing circuit 5, photoelectric conversion circuit 6,7, pre-amplification circuit 8,9, filtering circuit 10,11, back level amplifying circuit 12,13, A/D converter 14,15, storer 16, CPU 17, display device 18, impedance inverter circuit 19, detector YQ, equipment under test BC, trouble spot GZ.
Embodiment
Detection principle of the present utility model is, high-tension apparatus is when high-potting or operation, its voltage is generally all more than several kilovolts, inherent vice may issue living electric charge in the high pressure field intensity and move and discharge, and to the space radiation high frequency electromagnetic wave signal, also can produce simultaneously ultrasonic signal to around spatial transmission.Utilize embedded loop directional antenna to receive office's discharge magnetostatic wave signal of space radiation, utilize directed piezoelectric chip office of acceptance to put ultrasonic signal simultaneously, with electroacoustic signal after processing and amplifying, by data processing unit electricity, acoustical signal amplitude and time difference variation are analyzed, determine X, the Y coordinate of point of discharge by analyzing power that directional antenna receives signal, receive mistiming of signal and ultrasonic signal by the measuring and calculating antenna, determine the Z axial coordinate, thus the three-dimensional space position at the position of determining to discharge.Therefore can see in the drawings that the utility model has two branch circuits that receive electromagnetic wave and ultrasonic signal.
Directional antenna 1 (being coil antenna) is connected with electric signal receiving circuit 3, and electric signal receiving circuit 3 is connected successively by pre-amplification circuit 8, filtering circuit 10, back level amplifying circuit 12.Show among the figure that pre-amplification circuit 8 is made up of transport and placing device U2, filtering circuit 10 is made up of capacitor C 2, C3, inductance L 1, L2, and back level amplifying circuit 12 is made up of transport and placing device U3.
Piezoelectric chip 2 is connected with ultrasonic signal receiving circuit 4, and ultrasonic signal receiving circuit 4 is connected to form successively by impedance inverter circuit 19, pre-amplification circuit 9, filtering circuit 11, back level amplifying circuit 13.Show among the figure that impedance inverter circuit 19 is made up of transport and placing device U5, pre-amplification circuit 9 is made up of transport and placing device U6, and capacitor C 6, C7, inductance L 3, L4 form filtering circuit 11, and transport and placing device U7 forms back level amplifying circuit 13.
The output termination data processing circuit 5 of electric signal receiving circuit 3 and ultrasonic signal receiving circuit 4, the signal output part of data processing circuit 5 connects display device 18.The A/D converter 14,15 of data processing circuit 5 is that U9, U10 chip, storer 16 is the U11 chip, and they connect successively, and the input end of A/D converter 14,15 is connected with the output terminal of electric signal receiving circuit 3 with ultrasonic signal receiving circuit 4 respectively.
Between the input end of the output terminal of electric signal receiving circuit 3 and ultrasonic signal receiving circuit 4 and A/D converter 14,15, set up photoelectric conversion circuit 6,7 respectively, utilize the optical fiber GX between electrical to optical converter D1, D2 and photoelectric commutator D3, the D4 can isolated high-voltage, to guarantee detector and operating personnel's safety, simultaneously, can also prevent extraneous spuious electromagnetic interference.
During detection, the electromagnetic wave signal of discharge generation sensed by directional antenna 1 after transport and placing device U1 is transferred to the transport and placing device U2 of pre-amplification circuit 8, then by C2, L1, L2, C3 filtering, filtering external interference signal, after transport and placing device U3 amplifies once more, is light signal by electrical to optical converter D1 with electrical signal conversion, is transferred to photoelectric commutator D3 by optical fiber GX again, is transformed to electric signal.After piezoelectric chip 2 receives the ultrasonic signal of discharge generation, after transport and placing device U5 impedance conversion, be transferred to the transport and placing device U6 of pre-amplification circuit 9, signals of forming by C6, L3, L4, C7 such as filtering circuit 11 filtering external noises then, after transport and placing device U7 amplifies once more, is light signal by electrical to optical converter D2 with electrical signal conversion, is transferred to photoelectric commutator D4 by optical fiber GX again, is transformed to electric signal.The electric signal of electromagnetic wave signal and ultrasonic signal generation is delivered to high-speed a/d converter U9, U10 simultaneously and is converted to digital signal then, data are saved in the storer U11, CPU sense data in the storer U11, finish data processing after, result and Wave data are delivered to display lcd 1 show.
Carry out easily in order to make detection, and guarantee accurate detectable signal, and preventing the interference of extraneous clutter, the utility model is encapsulated in directional antenna 1 and piezoelectric chip 2 in the detecting head, the front opening of detecting head is surrounded by metal shield materials (as aluminium) housing all around.
A/D converter in the utility model adopts AD9220 high-speed a/d chip, and CPU adopts the LPC2106 chip.
Claims (5)
1. high voltage electric equipment insulation local damage position locator, it is characterized in that: it is by directional antenna [1], piezoelectric chip [2], electric signal receiving circuit [3], ultrasonic signal receiving circuit [4], data processing circuit [5], display device [18] is formed, wherein, the signal output part of directional antenna [1] is connected with electric signal receiving circuit [3], the signal output part of piezoelectric chip [2] is connected with ultrasonic signal receiving circuit [4], the output terminal of electric signal receiving circuit [3] and ultrasonic signal receiving circuit [4] is connected data processing circuit [5], and the signal output part of data processing circuit [5] connects display device [18];
Described electric signal receiving circuit [3] is formed and is connected successively by pre-amplification circuit [8], filtering circuit [10], back level amplifying circuit [12];
Described ultrasonic signal receiving circuit [4] is formed and is connected successively by impedance inverter circuit [19], pre-amplification circuit [9], filtering circuit [11], back level amplifying circuit [13];
Described data processing circuit [5] is by A/D converter [14] [15], storer [16], CPU[17] form, they connect successively, and the input end of A/D converter [14], [15] is connected with the output terminal of electric signal receiving circuit [3] with ultrasonic signal receiving circuit [4] respectively.
2. high voltage electric equipment insulation local damage position locator according to claim 1, it is characterized in that: the pre-amplification circuit [8] of described electric signal receiving circuit [3], filtering circuit [10], back level amplifying circuit [12] are made up of transport and placing device U1, U2, U3, capacitor C 1, C2, C3, C4, inductance L 1, L2, transport and placing device U2 forms pre-amplification circuit [8], capacitor C 2, C3, inductance L 1, L2 form filtering circuit [10], and transport and placing device U3 forms back level amplifying circuit [12].
3. high voltage electric equipment insulation local damage position locator according to claim 2, it is characterized in that: the impedance inverter circuit [19] in the described ultrasonic signal receiving circuit [4], pre-amplification circuit [9], filtering circuit [11], back level amplifying circuit [13] is respectively by transport and placing device U5, U6, U7, U8, capacitor C 5, C6, C7, C8, inductance L 3, L4 forms, transport and placing device U5 forms impedance inverter circuit [20], transport and placing device U6 forms pre-amplification circuit [9], capacitor C 6, C7, inductance L 3, L4 forms filtering circuit [11], and transport and placing device U7 forms back level amplifying circuit [13].
4. high voltage electric equipment insulation local damage position locator according to claim 3, it is characterized in that: at the output terminal and the A/D converter [14] of electric signal receiving circuit [3] and ultrasonic signal receiving circuit [4], [15] set up photoelectric conversion circuit [6] between the input end respectively, [7], photoelectric conversion circuit [6], [7] by electrical to optical converter D1, D2 and photoelectric commutator D3, D4 forms, electrical to optical converter D1, D2 is connected with the output terminal of electric signal receiving circuit [3] with ultrasonic signal receiving circuit [4] respectively, photoelectric commutator D3, D4 is connected with the input end of A/D converter [14] [15], electric light conversion D1, D2 and photoelectric commutator D3, connect by optical fiber GX between the D4.
5. high voltage electric equipment insulation local damage position locator according to claim 4, it is characterized in that: described directional antenna [1] and piezoelectric chip [2] are encapsulated in the detecting head, and the front opening of detecting head is surrounded by metal shielding all around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023740 CN2890942Y (en) | 2006-03-14 | 2006-03-14 | Insulation part damage positioning detector for high voltage electric apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023740 CN2890942Y (en) | 2006-03-14 | 2006-03-14 | Insulation part damage positioning detector for high voltage electric apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN2890942Y true CN2890942Y (en) | 2007-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620023740 Expired - Fee Related CN2890942Y (en) | 2006-03-14 | 2006-03-14 | Insulation part damage positioning detector for high voltage electric apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101685131B (en) * | 2008-09-23 | 2012-10-03 | 华东电力试验研究院有限公司 | Method for positioning local discharge of gas-insulator switchgear |
| CN103630811A (en) * | 2013-11-29 | 2014-03-12 | 广州供电局有限公司 | Digital partial discharge detecting system |
| CN103675630A (en) * | 2013-12-19 | 2014-03-26 | 国家电网公司 | Capacitor partial discharge ultrasound gating circuit |
| CN105467285A (en) * | 2015-12-18 | 2016-04-06 | 保定天威新域科技发展有限公司 | Local-discharge three-dimensional space positioning sensor and fault positioning method for high-voltage electric equipment |
| CN108536648A (en) * | 2018-03-30 | 2018-09-14 | 武汉大学 | Shelf depreciation nonlinear model conversion based on multiple ultrasonic sensors solves and optimization method |
-
2006
- 2006-03-14 CN CN 200620023740 patent/CN2890942Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101685131B (en) * | 2008-09-23 | 2012-10-03 | 华东电力试验研究院有限公司 | Method for positioning local discharge of gas-insulator switchgear |
| CN103630811A (en) * | 2013-11-29 | 2014-03-12 | 广州供电局有限公司 | Digital partial discharge detecting system |
| CN103675630A (en) * | 2013-12-19 | 2014-03-26 | 国家电网公司 | Capacitor partial discharge ultrasound gating circuit |
| CN105467285A (en) * | 2015-12-18 | 2016-04-06 | 保定天威新域科技发展有限公司 | Local-discharge three-dimensional space positioning sensor and fault positioning method for high-voltage electric equipment |
| CN108536648A (en) * | 2018-03-30 | 2018-09-14 | 武汉大学 | Shelf depreciation nonlinear model conversion based on multiple ultrasonic sensors solves and optimization method |
| CN108536648B (en) * | 2018-03-30 | 2021-07-06 | 武汉大学 | Partial discharge nonlinear model conversion solving and optimizing method based on multiple ultrasonic sensors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BAODING TIANWEI NEW DOMAIN TECHNOLOGY DEVELOPMENT Free format text: FORMER OWNER: TIANWEI GROUP CO., LTD., BAODING Effective date: 20081114 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081114 Address after: No 2399, West Print-Rite Road, Baoding, Hebei: 071056 Patentee after: Baoding Tianwei Xinyu Technology Development Co., Ltd. Address before: Baoding, Hebei Province, high street, chemical fiber North Road, 128 Jin Di garden complex building, zip code: 071051 Patentee before: Baoding Tianwei Group Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070418 Termination date: 20130314 |