CN108459248A - Transmission line corona discharge detection device - Google Patents
Transmission line corona discharge detection device Download PDFInfo
- Publication number
- CN108459248A CN108459248A CN201810283932.XA CN201810283932A CN108459248A CN 108459248 A CN108459248 A CN 108459248A CN 201810283932 A CN201810283932 A CN 201810283932A CN 108459248 A CN108459248 A CN 108459248A
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- corona discharge
- transmission line
- signal
- comparator
- module
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title abstract description 13
- 230000005611 electricity Effects 0.000 claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000002356 single layer Substances 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 6
- 238000005070 sampling Methods 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 5
- 238000013480 data collection Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007600 charging Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000000803 paradoxical effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
- Selective Calling Equipment (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention relates to the field of detection of corona discharge of a power transmission line, in particular to a corona discharge detection device of the power transmission line. Including unmanned aerial vehicle, helical antenna, distal end receiving arrangement and be used for signal processing's circuit integration module, helical antenna and circuit integration module carry on unmanned aerial vehicle, helical antenna be connected with circuit integration module electricity, circuit integration module and distal end receiving arrangement wireless connection, can realize transmission line corona discharge's closely high-efficient detection.
Description
Technical field
The present invention relates to the detection fields of transmission line of electricity corona discharge, are put more particularly, to a kind of transmission line of electricity corona
Electric detection means.
Background technology
The paradoxical discharge of transmission line of electricity can cause electromagnetic interference, energy loss, can also accelerate composite insulator aging, be electricity
The emphasis of Force system concern can help power department to find initial failure hidden danger the accurate detection of electric discharge phenomena, avoid weight
Big economic loss.The paradoxical discharge meeting pulses of radiation electromagnetic field of transmission line of electricity, detects such electromagnetic signal and antenna detection can be used
System.There are larger amplitude attenuations after air transmits at a distance for electromagnetic signal, and are readily incorporated larger ambient noise, because
This, which closely detects such electromagnetic signal with antenna, can efficiently reduce the decaying of signal and anti-interference so that detection is more efficient.
Transmission line of electricity corona discharge signal is the decaying oscillation type pulse signal periodically occurred, the period existing for discharge signal compared with
It is short, therefore only the period existing for acquisition discharge signal can greatly reduce data collection capacity so that signal acquisition is efficiently quick.Far
Data are transmitted when Distance Transmission signal can also be readily incorporated greatly more noises, therefore the place of signal is completed directly after acquiring signal
Comprehend more effective.
Invention content
The present invention is at least one defect overcome described in the above-mentioned prior art, provides a kind of transmission line of electricity corona discharge inspection
Device is surveyed, can realize the short distance efficient detection of transmission line of electricity corona discharge.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of transmission line of electricity corona discharge detection dress
It sets, including unmanned plane, helical antenna, far-end receiver and the circuit integrated module for signal processing, the spiral day
Line is equipped on circuit integrated module on unmanned plane, and the helical antenna is electrically connected with circuit integrated module, the circuit
Integration module is wirelessly connected with far-end receiver.
The present apparatus is by controlling near unmanned plane during flying to transmission line of electricity, by the helical antenna being mounted on unmanned plane,
The short distance detection for realizing the corona discharge electromagnetic signal within the scope of 2 meters near the transmission line of electricity, reduces decaying and the noise of signal
Interference, detected electromagnetic signal are handled by circuit integrated module, and corona discharge signal is the arteries and veins periodically occurred
Rush signal, the signal that helical antenna real-time reception arrives in most of the time section only ambient noise and there is no discharge signal,
Therefore for circuit integrated module when acquiring signal, the short time period selectively only occurred in corona discharge signal acquires letter
Number, and ignore the period of only ambient noise, data collection capacity can be largely reduced, to reduce high speed sampling circuit
Burden so that signal acquisition is more efficient quickly, and later stage signal processing is more convenient, at the same circuit integrated module to signal at
Reason is converted to spectrum distribution information, can reduce volume of transmitted data, and the spectrum distribution information converted is wirelessly transmitted to distal end and connects
Receiving apparatus is shown as a result, whole process is precisely efficient.
Further, the circuit integrated module includes signal acquisition module, digital signal processor and WIFI communication
Module, the signal acquisition module are electrically connected with helical antenna, the signal acquisition module, digital signal processor and
WIFI communication module is sequentially connected electrically, and the WIFI communication module is wirelessly connected with far-end receiver.
Further, the circuit of the signal acquisition module includes amplifier, bandpass filter, comparator, relay
And digital analog converter, the amplifier in are electrically connected with helical antenna, amplifier out is electrically connected with bandpass filter
It connects, the bandpass filter output end is divided into I road and II tunnel, and digital analog converter is accessed on II road, and I tunnel is through electricity
It hinders R3 and accesses comparator positive input terminal, the negative input end of the comparator connects through resistance R2 access voltages and through resistance R1 respectively
Ground, the positive input terminal of the comparator is also through capacity earth, and the output end of the comparator is through resistance R4 and comparator
Positive input terminal connects, and the output end of comparator is connect with relay, the output end access digital analog converter of the relay
Input terminal, the digital analog converter output end incoming digital signal handle mold.
The process of signal acquisition module is as follows：It realizes the function of selectively acquiring corona discharge signal, passes through setting
One voltage threshold, only after the electromagnetic signal voltage received is more than the threshold value（When impulse electric corona signal occurs）Commencing signal
Acquisition stops acquisition after collecting complete corona discharge signal, and the acquisition into next signal prepares.Helical antenna is real-time
Electromagnetic signal around receiving, after amplifier and bandpass filter, I road signal enters comparator, charges to capacitance C, 2
Reference voltage ui1, comparator "-" end input voltage ui are formed at node, are formed with reference to electricity in 1 node by the partial pressure of R2, R1
Pressure value ui2.Work as ui1>When ui2, comparator exports positive voltage u0, forms negative-feedback through R4, further charges C with delay voltage
The decaying of ui1 so that ui1>The numerical relation of ui2 is maintained, to allow comparator that can stablize output electricity in a period of time T
Press u0.U0 powers for relay so that relay switch K1 is closed, and then provides enable signal for digital analog converter.Believe on II road
Number be directly entered the input terminal 5 of digital analog converter, digital analog converter sample circuit only when 4 ports receive enable signal,
High-speed sampling, and output digit signals can be just done to input signal.Therefore digital analog converter is only in ui1>In the period T of ui2
Normal work, period T are codetermined by resistance R4 and capacitance C, can be adjusted according to actual conditions, to reach only in electricity
The purpose of acquisition signal in corona epoch section.
Further, the helical antenna includes copper sheet and pcb board, and the copper sheet is printed on pcb board in the shape of a spiral
On.
Further, the copper sheet is single layer printing or multi-sheet printed.
Further, the unmanned plane includes power supply, and the power supply is that circuit integrated module and unmanned plane are powered.No
It needs additional external power supply to be powered circuit integrated module, can effectively mitigate the weight of unmanned plane.
Further, the far-end receiver is mobile phone or tablet computer.Mobile phone or tablet computer can be passed through
On install preset application program, you can display result is received by mobile phone or tablet computer.
Further, the unmanned plane is multi-rotor unmanned aerial vehicle, can ensure the lifting capacity of unmanned plane, make unmanned plane
Even if can still keep balancing under strong wind atmosphere, ensure operation effectiveness.
Compared with prior art, advantageous effect is：
1, the present apparatus can closely detect corona discharge electromagnetic signal, caused by reduction signal transmits at a distance in air
Amplitude attenuation, while reducing ambient noise interference；
2, the present apparatus is capable of the short time period acquisition signal of selectivity only occurred in corona discharge signal, and ignores only environment
The period of noise can largely reduce data collection capacity, to reduce the burden of high speed sampling circuit so that signal is adopted
Collect more efficient quick；
3, the present apparatus can directly convert a signal into spectrum distribution information, can reduce volume of transmitted data.
Description of the drawings
Fig. 1 is structure of the invention general frame schematic diagram；
Fig. 2 is the circuit diagram of signal acquisition module in the present invention；
Fig. 3 is the mechanism map of helical antenna in the present invention.
Specific implementation mode
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；It is attached in order to more preferably illustrate the present embodiment
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable.Being given for example only property of position relationship described in attached drawing
Illustrate, should not be understood as the limitation to this patent.
As shown in Figure 1, a kind of transmission line of electricity device for detecting corona discharge, including unmanned plane, helical antenna 01, distal end reception
Device and circuit integrated module for signal processing, helical antenna 01 are equipped on circuit integrated module on unmanned plane, circuit
Integration module includes signal acquisition module, digital signal processor and WIFI communication module, signal acquisition module and helical antenna
01 electrical connection, signal acquisition module, digital signal processor and WIFI communication module be sequentially connected electrically, WIFI communication module with it is remote
Receiving apparatus is terminated to be wirelessly connected.
As shown in Fig. 2, the circuit of signal acquisition module includes amplifier 02, bandpass filter 22, comparator 25, relay
24 and digital analog converter 23,02 input terminal of amplifier be electrically connected with helical antenna 01,02 output end of amplifier and band logical
Filter 22 is electrically connected, and 22 output end of bandpass filter is divided into I road and II tunnel, and digital analog converter is accessed on II road
23,25 positive input terminal of comparator is accessed in I tunnel through resistance R3, and the negative input end of the comparator 25 is respectively through resistance R2
Access voltage and be grounded through resistance R1, the positive input terminal of the comparator 25 also through capacity earth, the comparator 25
Output end is connect through resistance R4 with the positive input terminal of comparator 25, and the output end of comparator 25 is connect with relay 24, described
The input terminal of the output end access digital analog converter 23 of relay 24, the 23 output end incoming digital signal of digital analog converter
Handle mold.
The process of signal acquisition module is as follows：It realizes the function of selectively acquiring corona discharge signal, passes through setting
One voltage threshold, only after the electromagnetic signal voltage received is more than the threshold value（When impulse electric corona signal occurs）Commencing signal
Acquisition stops acquisition after collecting complete corona discharge signal, and the acquisition into next signal prepares.Helical antenna 01 is real
When receive around electromagnetic signal, after amplifier 21 and bandpass filter 22, I road signal enters comparator 25, to capacitance C
Charging forms reference voltage ui1,25 "-" end input voltage ui of comparator, by the partial pressure of resistance R2, resistance R1 at 2 nodes
Reference voltage level ui2 is formed in 1 node.Work as ui1>When ui2, comparator 25 exports positive voltage u0, and negative-feedback is formed through resistance R4,
Further to capacitance C chargings with the decaying of delay voltage ui1 so that ui1>The numerical relation of ui2 is maintained, and is compared to allow
Device 25 can stabilize the output voltage u0 in a period of time T.U0 powers for relay 24 so that and 24 switch K1 of relay is closed, into
And it is that digital analog converter 23 provides enable signal.II road signal is directly entered the input terminal 5 of digital analog converter 23, digital analog converter
23 sample circuits only when 4 ports receive enable signal, can just do input signal high-speed sampling, and export digital letter
Number.Therefore digital analog converter 23 is only in ui1>Normal work in the period T of ui2, the period, T was total to by resistance R4 and capacitance C
It with decision, can be adjusted according to actual conditions, to reach the mesh for only acquiring signal in corona discharge epoch section
's.
As shown in figure 3, helical antenna 01 is printed on by copper sheet 02 on pcb board 03 in the shape of a spiral, copper sheet 02 prints for single layer
Or it is multi-sheet printed.
Wherein, unmanned plane includes power supply, and power supply is that circuit integrated module and unmanned plane are powered.It is external additional is not needed
Power supply is powered circuit integrated module, can effectively mitigate the weight of unmanned plane.
Wherein, far-end receiver is mobile phone or tablet computer.It can be pre- by being installed on mobile phone or tablet computer
If application program, you can display result is received by mobile phone or tablet computer.
Wherein, unmanned plane is multi-rotor unmanned aerial vehicle, can ensure the lifting capacity of unmanned plane, even if making unmanned plane big
It can still keep balancing under wind environment, ensure operation effectiveness.
The implementation process of the present apparatus is as follows：Electromagnetic signal is received by UAV flight's helical antenna 01, later by letter
Number processing and analysis obtain the discharge scenario of spectrum distribution message reflection insulator.Due to transmission line of electricity corona discharge electromagnetic signal
It is weak, and propagation amplitude attenuation is serious in air, ambient noise is big so that the signal that the antenna structure on ground detects is micro-
It is weak, therefore flown to transmission line of electricity by remote control control unmanned plane measuring system, it can realize the short distance of discharge signal
It measures, reduces decaying and the noise jamming of signal.Corona discharge signal is the pulse signal periodically occurred, and helical antenna 01 is real
When the signal that receives in most of the time section only ambient noise and there is no discharge signals, therefore when acquiring signal, have
The short time period of selectivity only occurred in corona discharge signal acquires signal, and ignores the period of only ambient noise, energy
Data collection capacity largely being reduced, to reduce the burden of high speed sampling circuit so that signal acquisition is more efficient quickly, after
Phase signal processing is more convenient.Meanwhile after the hardware circuit of UAV flight is to electromagnetic signal acquisition, processing, Fourier's change is carried out
The spectrum distribution information for directly obtaining transmission signal is changed, volume of transmitted data can be reduced.Communication modes select WIFI that can reduce transmission
The use of line both mitigated load-carrying for unmanned plane, and also made measuring system more convenient, data transmission is more efficient.Therefore, using this nobody
Machine, which carries 01 measuring system of helical antenna, can realize the short distance efficient detection of transmission line of electricity corona discharge.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement etc., should be included in the claims in the present invention made by within the spirit and principle of invention
Protection domain within.
Claims (8)
1. a kind of transmission line of electricity device for detecting corona discharge, which is characterized in that including unmanned plane, helical antenna（01）, distally connect
Receiving apparatus and circuit integrated module for signal processing, the helical antenna（01）It is equipped on nobody with circuit integrated module
On machine, the helical antenna（01）It is electrically connected with circuit integrated module, the circuit integrated module and far-end receiver
It is wirelessly connected.
2. a kind of transmission line of electricity device for detecting corona discharge according to claim 1, which is characterized in that the circuit collection
Include signal acquisition module, digital signal processor and WIFI communication module, the signal acquisition module and spiral at module
Antenna（01）Electrical connection, the signal acquisition module, digital signal processor and WIFI communication module are sequentially connected electrically, described
WIFI communication module and far-end receiver be wirelessly connected.
3. a kind of transmission line of electricity device for detecting corona discharge according to claim 1, which is characterized in that the signal is adopted
The circuit for collecting module includes amplifier（21）, bandpass filter（22）, comparator（25）, relay（24）And digital analog converter
（23）, the amplifier（21）Input terminal and helical antenna（01）Electrical connection, amplifier（21）Output end and bandpass filter
（22）Electrical connection, the bandpass filter（22）Output end is divided into I road and II tunnel, and digital analog converter is accessed on II road
（23）, comparator is accessed in I tunnel through resistance R3（25）Positive input terminal, the comparator（25）Negative input end pass through respectively
Resistance R2 accesses voltage and is grounded through resistance R1, the comparator（25）Positive input terminal also through capacity earth, the ratio
Compared with device（25）Output end through resistance R4 and comparator（25）Positive input terminal connection, comparator（25）Output end and relay
（24）Connection, the relay（24）Output end access digital analog converter（23）Input terminal, the digital analog converter
（23）Output end incoming digital signal handles mold.
4. a kind of transmission line of electricity device for detecting corona discharge according to claim 1, which is characterized in that the spiral day
Line（01）Including copper sheet（02）And pcb board（03）, the copper sheet（02）It is printed on pcb board in the shape of a spiral（03）On.
5. a kind of transmission line of electricity device for detecting corona discharge according to claim 4, which is characterized in that the copper sheet
（02）It is printed for single layer or multi-sheet printed.
6. a kind of transmission line of electricity device for detecting corona discharge according to claim 1, which is characterized in that the unmanned plane
Including power supply, the power supply is that circuit integrated module and unmanned plane are powered.
7. a kind of transmission line of electricity device for detecting corona discharge according to claim 1, which is characterized in that the distal end connects
Receiving apparatus is mobile phone or tablet computer.
8. a kind of transmission line of electricity device for detecting corona discharge according to claim 1, which is characterized in that the unmanned plane
For multi-rotor unmanned aerial vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283932.XA CN108459248A (en) | 2018-04-02 | 2018-04-02 | Transmission line corona discharge detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283932.XA CN108459248A (en) | 2018-04-02 | 2018-04-02 | Transmission line corona discharge detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108459248A true CN108459248A (en) | 2018-08-28 |
Family
ID=63237069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810283932.XA Pending CN108459248A (en) | 2018-04-02 | 2018-04-02 | Transmission line corona discharge detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN108459248A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110058061A (en) * | 2019-05-30 | 2019-07-26 | 广东电网有限责任公司 | A kind of shell for UAV flight's antenna detection device |
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