CN2550770Y - Portable zero value insulator ground detector - Google Patents
Portable zero value insulator ground detector Download PDFInfo
- Publication number
- CN2550770Y CN2550770Y CN 02240244 CN02240244U CN2550770Y CN 2550770 Y CN2550770 Y CN 2550770Y CN 02240244 CN02240244 CN 02240244 CN 02240244 U CN02240244 U CN 02240244U CN 2550770 Y CN2550770 Y CN 2550770Y
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Abstract
The utility model relates to a ground detector of a portable type zero value insulator, in particular to a detecting device of a on-line detection high voltage transmission line zero value insulator, which is used for the zero value insulator in a suspension insulator string detected on the ground. The technical proposal is that a clamp type high-frequency current sensor (1) is clipped on a high voltage transmission line tower grounding wire to obtain an insulator corona impulse signal, and the insulator corona impulse signal is sent to a filter (4) through a corona signal transmission line (11), then is converted into a digital signal through an amplifier (5) and a digit to analog converter (5) and then sent into a microprocessor (8) to count the signal, a power frequency voltage sensor (2) obtains a power frequency voltage signal, the power frequency voltage signal is sent to a phase reference circuit (9) and then is provided to the microprocessor (8), the microprocessor (8) makes the corresponding judgment to whether the zero value insulator exists or not according to the phase relationship of the corona impulse signal and a power frequency voltage. The utility model has the advantages that the operation is simple, the structure is simple, the volume is small, and the cost is low.
Description
Technical field
The utility model relates to a kind of pick-up unit of charged detection ultra-high-tension power transmission line zero resistance insulator, is used for going out in ground detection the zero resistance insulator of suspension insulator string.
Background technology
The common tool that detects ultra-high-tension power transmission line null value suspended insulator at present is the spark fork, during detection with two metal contact of spark fork respectively with the iron pin and the chapeau de fer overlap joint of insulator, if insulator dielectric is functional, the voltage breakdown gap that insulator is born, produce spark discharge, operating personnel judge according to the sound of spark discharge whether insulator is good, this method can not be worked under strong noise background, can not detect distance insulator far away, need step on bar detects piecewise, labour intensity is big, can produce dangerous by short circuit good insulation.Someone is modified into the spark fork can measure the instrument that insulator voltage distributes automatically, but this instrument mechanical part complexity, and still need be sent on the tower, still there is short circuit good insulation to produce dangerous possibility.
The utility model content
Can not take into account the deficiency of aspects such as accuracy, simplicity, security and cost in order to overcome existing zero resistance insulator detection means, the utility model provides a kind of portable zero resistance insulator ground detection instrument, not only need not step on bar, alleviated labour intensity, and it is with low cost, can short circuit good insulation, be not subjected to noise.
Principle of the present utility model is: insulator can produce the corona pulse electric current when bearing the power frequency high voltage, this electric current flows through the tower grounding line, therefore can obtain the corona pulse signal from ground wire, when zero resistance insulator occurring in the suspension insulator string, the voltage that good insulation is born increases, its corona strengthens, and just can detect zero resistance insulator in the suspension insulator string by detecting corona pulse.Concrete technical scheme of the present utility model is: by pincers type High Frequency Current Sensor, the power-frequency voltage sensor, main frame, corona signal transmission line and power frequency component transmission line are formed detecting instrument, pincers type High Frequency Current Sensor is stuck on the high-voltage transmission line pole tower ground wire, obtain insulator corona pulse signal, and the wave filter of delivering in the main frame through the corona signal transmission line carries out filtering, amplifier and analog to digital converter are converted to digital signal in main frame again, send into microprocessor and add up this signal, the power-frequency voltage sensor obtains the power-frequency voltage signal, isolate amplification through the phase reference circuit that the power frequency component transmission line is delivered in the main frame, be re-used as time reference and offer microprocessor, whether microprocessor is normal according to the phase relation of corona pulse current signal and power-frequency voltage, provides corresponding judgment to whether there being zero resistance insulator on the shaft tower.
Use the utility model has been realized the ground detection to charged ultra-high-tension power transmission line zero resistance insulator, need not step on tower, and labour intensity is little, and need not change original wiring, directly contacts with insulator, can not cause danger by the short circuit insulator.The utility model detects simultaneously to all insulators on the tower, needn't measure piecewise, thereby easy and simple to handle, and simple in structure, volume is little, and the circuit that is adopted is the normal conventional circuit, thereby cost is low.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2, Fig. 3 are respectively the front view and the vertical views of power-frequency voltage sensor surface structure among the utility model embodiment.
Embodiment
Referring to accompanying drawing, the utility model is made up of pincers type High Frequency Current Sensor 1, power-frequency voltage sensor 2, main frame 3, corona signal transmission line 11 and power frequency component transmission line 10.Pincers type High Frequency Current Sensor 1 used magnetic conductor be two semi-circular, its center bore is 17 millimeters, pincers type High Frequency Current Sensor 1 is stuck on the high-voltage transmission line pole tower ground wire, obtain the corona pulse current signal, and the wave filter 4 that this signal is delivered in the main frame 3 less than 1 meter coaxial cable transmission line 11 by length carries out filtering, amplifier 5 and analog to digital converter 6 are converted to digital signal in main frame 3 again, send into microprocessor 7 these signals of statistics; Power-frequency voltage sensor 2 is by a rectangular parallelepiped can 15, and two metal plates 16 of difference bottom surface attached to it and bottom surface are formed; Insulation between metal plate 16 and the can 15, power-frequency voltage sensor 2 places the shaft tower below, to obtain the power-frequency voltage signal through the power frequency component transmission line 10 of length greater than 1 meter, the phase reference circuit of delivering in the main frame 9 is isolated amplification, be re-used as time reference and offer microprocessor 7, whether microprocessor 7 is normal according to the phase relation of corona pulse current signal and power-frequency voltage, provides corresponding judgment to whether there being zero resistance insulator on the shaft tower.In main frame, also have a memory 8 that links to each other with microprocessor 7, it can preserve the detection data, and exports to other data processing equipments.
Claims (5)
1. portable zero resistance insulator ground detection instrument, it is characterized in that: it is by pincers type High Frequency Current Sensor [1], power-frequency voltage sensor [2], main frame [3], corona signal transmission line [11] and power frequency component transmission line [10] are formed, pincers type High Frequency Current Sensor [1] is stuck on the high-voltage transmission line pole tower ground wire, obtain the corona pulse current signal, and the wave filter of delivering in the main frame [3] through corona signal transmission line [11] [4] carries out filtering, amplifier [5] and analog to digital converter [6] are converted to digital signal in main frame [3] again, send into microprocessor [7] and receive and add up this signal, power-frequency voltage sensor [2] obtains the power-frequency voltage signal, isolate amplification through the phase reference circuit [9] that power frequency component transmission line [10] is delivered in the main frame, be re-used as time reference and offer microprocessor [7], whether microprocessor [7] is normal according to the phase relation of corona pulse current signal and power-frequency voltage, provides corresponding judgment to whether there being zero resistance insulator on the shaft tower.
2. portable zero resistance insulator ground detection instrument according to claim 1 is characterized in that: in described main frame [3], also have a memory [8] that links to each other with microprocessor [7], it can preserve the detection data, and exports to other data processing equipments.
3. portable zero resistance insulator ground detection instrument according to claim 1 is characterized in that: described power-frequency voltage sensor [2] is by a rectangular parallelepiped can [15], and two metal plates [16] of difference bottom surface attached to it and bottom surface are formed; Insulation between metal plate [16] and the can [15].
4. portable zero resistance insulator ground detection instrument according to claim 1 is characterized in that: the used magnetic conductor of described pincers type High Frequency Current Sensor [1] be two semi-circular, its center bore is 17 millimeters.
5. portable zero resistance insulator ground detection instrument according to claim 1 is characterized in that: described corona signal transmission line [11] adopts concentric cable, and its length is less than 1 meter; The length of described power frequency component transmission line [10] is greater than 1 meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240244 CN2550770Y (en) | 2002-06-13 | 2002-06-13 | Portable zero value insulator ground detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240244 CN2550770Y (en) | 2002-06-13 | 2002-06-13 | Portable zero value insulator ground detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2550770Y true CN2550770Y (en) | 2003-05-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02240244 Expired - Fee Related CN2550770Y (en) | 2002-06-13 | 2002-06-13 | Portable zero value insulator ground detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2550770Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410674C (en) * | 2004-03-12 | 2008-08-13 | Lg电线有限公司 | Device for checking faulty component in the overhead transmission line or lightning stroke |
| CN100442065C (en) * | 2005-10-10 | 2008-12-10 | 西安交通大学 | Synthetic insulator on-line detector based on pulse current method |
| CN102539901A (en) * | 2012-01-10 | 2012-07-04 | 航天科工深圳（集团）有限公司 | Zero resistance insulator string monitoring device and method |
| CN102818928A (en) * | 2011-12-16 | 2012-12-12 | 清华大学 | Current probe-based on-line measuring system for high-frequency corona pulse current on high-voltage line |
| CN102890227A (en) * | 2012-09-29 | 2013-01-23 | 深圳供电局有限公司 | Intelligent 10kV distribution cable partial discharge on-line monitoring device |
| CN102967805A (en) * | 2012-11-06 | 2013-03-13 | 南京能新电力高科实业有限公司 | Analysis meter and analysis method for online induction pulse signal of electric transmission line |
| CN105182202A (en) * | 2015-09-29 | 2015-12-23 | 北京环境特性研究所 | Mini corona discharge detection device |
| CN109490725A (en) * | 2018-11-13 | 2019-03-19 | 广西电网有限责任公司电力科学研究院 | The isolator detecting system for having active intelligent recognition function |
-
2002
- 2002-06-13 CN CN 02240244 patent/CN2550770Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410674C (en) * | 2004-03-12 | 2008-08-13 | Lg电线有限公司 | Device for checking faulty component in the overhead transmission line or lightning stroke |
| CN100442065C (en) * | 2005-10-10 | 2008-12-10 | 西安交通大学 | Synthetic insulator on-line detector based on pulse current method |
| CN102818928A (en) * | 2011-12-16 | 2012-12-12 | 清华大学 | Current probe-based on-line measuring system for high-frequency corona pulse current on high-voltage line |
| CN102539901A (en) * | 2012-01-10 | 2012-07-04 | 航天科工深圳（集团）有限公司 | Zero resistance insulator string monitoring device and method |
| CN102890227A (en) * | 2012-09-29 | 2013-01-23 | 深圳供电局有限公司 | Intelligent 10kV distribution cable partial discharge on-line monitoring device |
| CN102890227B (en) * | 2012-09-29 | 2015-04-08 | 深圳供电局有限公司 | Intelligent 10kV distribution cable partial discharge on-line monitoring device |
| CN102967805A (en) * | 2012-11-06 | 2013-03-13 | 南京能新电力高科实业有限公司 | Analysis meter and analysis method for online induction pulse signal of electric transmission line |
| CN105182202A (en) * | 2015-09-29 | 2015-12-23 | 北京环境特性研究所 | Mini corona discharge detection device |
| CN105182202B (en) * | 2015-09-29 | 2017-11-03 | 北京环境特性研究所 | One kind miniaturization corona discharge detection device |
| CN109490725A (en) * | 2018-11-13 | 2019-03-19 | 广西电网有限责任公司电力科学研究院 | The isolator detecting system for having active intelligent recognition function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |