CN208076652U - Disordered insulator detection device based on Leakage Current - Google Patents
Disordered insulator detection device based on Leakage Current Download PDFInfo
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- CN208076652U CN208076652U CN201820043249.4U CN201820043249U CN208076652U CN 208076652 U CN208076652 U CN 208076652U CN 201820043249 U CN201820043249 U CN 201820043249U CN 208076652 U CN208076652 U CN 208076652U
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- 239000012212 insulator Substances 0.000 title claims abstract description 68
- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 230000010363 phase shift Effects 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 8
- 230000008054 signal transmission Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 11
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000013481 data capture Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The disordered insulator detection device based on Leakage Current that the utility model is related to a kind of, the device include insulator Leakage Current sensor and signal acquisition and processing apparatus；The insulator Leakage Current sensor is mounted on the steel cap of insulator, and the insulator Leakage Current sensor is used to acquire the Leakage Current for flowing through insulator place insulator chain, and by shielded cable or is wirelessly transmitted to the signal acquisition and processing apparatus.Signal acquisition and processing apparatus includes wideband current sensor, high-pass filter, bandpass filter, phase shift and square wave conversion circuit, amplifier, data collecting card and microcontroller；Wherein, microcontroller is used for the processing of data and judges insulator situation.The utility model is reached by detection insulator Leakage Current to be judged defects of insulator and carries out remote transmission, realizes automatic decision insulator state.
Description
Technical field
The disordered insulator detection device based on Leakage Current that the utility model is related to a kind of, especially with regard to one kind in height
That is applied in pressure transmission line field realizes the device detected to disordered insulator by using acquisition Leakage Current mode.
Background technology
The insulator of transmission line of electricity is so that it is kept the important component of electric property for fixed conductor.In electric system
In operation, complicated adverse circumstances that long-term work is collectively formed in highfield, mechanical stress, filth and humiture etc.
In, the probability of failure is very big, seriously threatens the safe operation of electric system.In general defects of insulator mainly have with
Under several aspects：There is crack in interior insulator, insulator surface is damaged, insulation impedance reduces etc..Current many detection methods
There is still a need for steel tower Site Detection is climbed, there is the problems such as measuring heavy workload, danger is high.Therefore it finds a kind of economical, practical
Effective insulator on-line detection method is always power department urgent problem to be solved.
Insulator is usually made of glass or ceramics, and support conducting wire is played in overhead transmission line and prevents electric current from returning ground
Important function.When the variation of site environment humidity, pollution severity of insulators object excessive, covering ice for insulator, zero resistance insulator etc. because
When element causes insulator leakage current to increase, a kind of new detection device need to be provided and accurately detected, judge insulation to reach
The purpose of sub- defect.
Invention content
In view of the above-mentioned problems, the purpose of this utility model is to provide a kind of disordered insulator detection dress based on Leakage Current
It sets, which is reached by detection insulator Leakage Current judges defects of insulator and carry out remote transmission, realizes automatic decision
Insulator state.
To achieve the above object, the utility model takes following technical scheme：A kind of defect insulation based on Leakage Current
Sub- detection device, it is characterised in that：The device includes insulator Leakage Current sensor and signal acquisition and processing apparatus；It is described exhausted
Edge Leakage Current sensor is mounted on the steel cap of insulator, and the insulator Leakage Current sensor flows through this for acquiring
The Leakage Current of insulator chain where insulator, and by shielded cable or it is wirelessly transmitted to the signal acquisition and processing apparatus.
The signal acquisition and processing apparatus includes wideband current sensor, high-pass filter, bandpass filter, phase shift and side
Wave conversion circuit, amplifier, data collecting card and microcontroller；The insulator Leakage Current sensor is electric by collected leakage
An amplifier transfer is flowed through to the bandpass filter, is transmitted to after the bandpass filter is filtered described
Phase shift and square wave conversion circuit, by obtaining reference signal after the phase shift and square wave conversion circuit processing and being transmitted to the data
Capture card；The wideband current sensor is by the steel tower electric current of circuit where collected insulator chain through the high-pass filter
After processing, it is transmitted to after another amplifier is amplified processing and obtains pulse signal, the pulse signal transmission to the number
According to capture card；The pulse signal received and reference signal are converted into being transmitted to after digital signal described by the data collecting card
In microcontroller.
The microcontroller uses low-power consumption MSP430F149.
The utility model has the following advantages due to taking above technical scheme：1, the utility model is super by recording
The leakage current umber of pulse detection disordered insulator operating status for going out certain amplitude, realizes automatic decision insulator state.When exhausted
When defect occurs in edge, the amplitude of the fundamental wave and each harmonic that show Leakage Current increased dramatically, and triple-frequency harmonics
Growth considerably beyond fundamental wave and other each harmonics growth, therefore can by monitor triple-frequency harmonics within the unit interval
Frequency and intensity.2, the utility model reasonable Arrangement Leakage Current harvester, on the basis of not influencing insulator dielectric effect
Acquire Leakage Current.
Description of the drawings
Fig. 1 is the insulator Leakage Current sensor layout schematic diagram of the utility model；
Fig. 2 is the system structure diagram of the utility model.
Specific implementation mode
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1 and Figure 2, the utility model provides a kind of disordered insulator detection device based on Leakage Current, packet
Include insulator Leakage Current sensor 1 and signal acquisition and processing apparatus.Insulator Leakage Current sensor 1 is mounted on insulator 2
Steel cap 3 on, insulator Leakage Current sensor 1 for acquiring the Leakage Current for flowing through the 2 place insulator chain of insulator, and
By shielded cable or it is wirelessly transmitted to signal acquisition and processing apparatus.
In a preferred embodiment, signal acquisition and processing apparatus includes wideband current sensor, high-pass filter, band
Bandpass filter, phase shift and square wave conversion circuit, amplifier, data collecting card and microcontroller.Wherein, microcontroller is used for the place of data
It manages and judges insulator situation.Insulator Leakage Current sensor 1 is by collected Leakage Current through an amplifier transfer to band
Bandpass filter is transmitted to phase shift and square wave conversion circuit after bandpass filter is filtered, and is converted by phase shift and square wave
Reference signal is obtained after processing of circuit and is transmitted to data collecting card.Wideband current sensor will be where collected insulator chain
The steel tower electric current of circuit is transmitted to after another amplifier is amplified processing after high pass filter, processes and obtains pulse signal,
The pulse signal transmission is to data collecting card.The pulse signal received and reference signal are converted into digital letter by data collecting card
It is transmitted in microcontroller after number, defects of insulator identifying processing is carried out by microcontroller.
In the various embodiments described above, defects of insulator is carried out using pulse counting method and maximum leakage current method in microcontroller
Identifying processing：Pulse counting method and maximum leakage current method are the methods based on leakage current characteristic quantity.Pulse counting method be
In the given time, record bears the disordered insulator under operating voltage and exceeds the leakage current umber of pulse for presetting amplitude,
It can represent defects of insulator degree.Maximum leakage electric current characterizes the degree of the defects of insulator, it is exhausted as characterization defect
The characteristic value of edge operating status.
In the various embodiments described above, microcontroller uses low-power consumption MSP430F149.
In a preferred embodiment, insulator Leakage Current sensor 1 is a circle core-theaded type passive sensor, is adopted
Make electromagnetic induction element and electronic compensating with high permeability material, tool high-precision is than poor characteristic and general precision angular difference characteristic.
In the various embodiments described above, Leakage Current signal transmits conducting wire and is all made of double layer screen line, and wherein outer shield is most
Close to the iron head ground connection of the insulator 2 of steel tower, and internal layer shielding is grounded in detection device position.
In a preferred embodiment, since insulator current signal is very faint, and frequency band distribution is very wide.In order to have
Effect extracts pulse signal ingredient, is used as using the frequency band of 2MHz or more in the present embodiment and detects frequency band.
The various embodiments described above are merely to illustrate the utility model, and structure and size, installation position and the shape of each component are all
Can be varied from, on the basis of technical solutions of the utility model, it is all according to the utility model principle to individual part into
Capable improvement and equivalents, should not exclude except the scope of protection of the utility model.
Claims (2)
1. a kind of disordered insulator detection device based on Leakage Current, it is characterised in that：The device includes insulator leakage electricity
Flow sensor and signal acquisition and processing apparatus；The insulator Leakage Current sensor is mounted on the steel cap of insulator, described
Insulator Leakage Current sensor is used to acquire the Leakage Current for flowing through insulator place insulator chain, and passes through shielded cable
Or it is wirelessly transmitted to the signal acquisition and processing apparatus；
The signal acquisition and processing apparatus includes that wideband current sensor, high-pass filter, bandpass filter, phase shift and square wave turn
Change circuit, amplifier, data collecting card and microcontroller；The insulator Leakage Current sensor passes through collected Leakage Current
One amplifier transfer is transmitted to the phase shift to the bandpass filter after the bandpass filter is filtered
And square wave conversion circuit, it is acquired by obtaining reference signal after the phase shift and square wave conversion circuit processing and being transmitted to the data
Card；The wideband current sensor is by the steel tower electric current of circuit where collected insulator chain through the high pass filter, processes
Afterwards, it is transmitted to after another amplifier is amplified processing and obtains pulse signal, the pulse signal transmission to the data is adopted
Truck；The pulse signal received and reference signal are converted into being transmitted to the monolithic after digital signal by the data collecting card
In machine.
2. the disordered insulator detection device based on Leakage Current as described in claim 1, it is characterised in that：The microcontroller
Using low-power consumption MSP430F149.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820043249.4U CN208076652U (en) | 2018-01-11 | 2018-01-11 | Disordered insulator detection device based on Leakage Current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820043249.4U CN208076652U (en) | 2018-01-11 | 2018-01-11 | Disordered insulator detection device based on Leakage Current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208076652U true CN208076652U (en) | 2018-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820043249.4U Active CN208076652U (en) | 2018-01-11 | 2018-01-11 | Disordered insulator detection device based on Leakage Current |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120908A (en) * | 2018-01-11 | 2018-06-05 | 国家电网公司 | One kind is based on the defects of Leakage Current insulator detection device |
| CN110018403A (en) * | 2019-04-19 | 2019-07-16 | 国网江西省电力有限公司电力科学研究院 | A kind of extraction and recognition methods of the hidden danger electric current that insulator local arc generates |
| US11443155B2 (en) * | 2018-01-19 | 2022-09-13 | Lindsey Manufacturing Company | Insulator leakage current detector and method of detecting insulator leakage current |
-
2018
- 2018-01-11 CN CN201820043249.4U patent/CN208076652U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120908A (en) * | 2018-01-11 | 2018-06-05 | 国家电网公司 | One kind is based on the defects of Leakage Current insulator detection device |
| US11443155B2 (en) * | 2018-01-19 | 2022-09-13 | Lindsey Manufacturing Company | Insulator leakage current detector and method of detecting insulator leakage current |
| CN110018403A (en) * | 2019-04-19 | 2019-07-16 | 国网江西省电力有限公司电力科学研究院 | A kind of extraction and recognition methods of the hidden danger electric current that insulator local arc generates |
| CN110018403B (en) * | 2019-04-19 | 2021-03-02 | 国网江西省电力有限公司电力科学研究院 | Method for extracting and identifying hidden danger current generated by insulator local arc |
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