CN208350930U - Live very high frequency partial discharge testing device for outdoor cable terminal on tower - Google Patents
Live very high frequency partial discharge testing device for outdoor cable terminal on tower Download PDFInfo
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- CN208350930U CN208350930U CN201821067449.XU CN201821067449U CN208350930U CN 208350930 U CN208350930 U CN 208350930U CN 201821067449 U CN201821067449 U CN 201821067449U CN 208350930 U CN208350930 U CN 208350930U
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- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 22
- 230000003321 amplification Effects 0.000 claims description 11
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 11
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 239000013307 optical fiber Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 6
- 239000012528 membrane Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
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Abstract
The utility model provides a testing arrangement is put in electrified very high frequency office of outdoor cable termination on tower, wherein, this testing arrangement includes: a unmanned aerial vehicle for acquireing very high frequency partial discharge test signal carries on equipment of lifting off and is used for acquireing cable body voltage signal and carries out the machine operating equipment that shows to the very high frequency partial discharge test signal and voltage signal who acquires, unmanned aerial vehicle carry on equipment of lifting off with machine operating equipment communication connection, wherein unmanned aerial vehicle carries on equipment of lifting off includes unmanned aerial vehicle and the collection system who is used for acquireing the very high frequency partial discharge test signal, collection system carries on the unmanned aerial vehicle. The utility model discloses a carry on collection system and carry out very high frequency test on unmanned aerial vehicle, overcome the low defect of outdoor cable terminal validity who detects the high altitude installation subaerial, improved the validity of outdoor cable terminal test on the tower.
Description
Technical field
The utility model relates to outdoor cable terminals on wireline test field more particularly to a kind of tower to charge very high frequency(VHF) partial discharge
Test device.
Background technique
Voltage Cable Lines Construction charges partial discharge detection, is that timely discovery line insulation defect most wants one of means, in recent years
The electrification partial discharge detection applied on working line to grow up, mainly there is pulse current method and membrane electrode method, both
Although method then shows short slab using above there is convenient one side, for the outdoor cable terminal on cable termination tower.It is existing
There is Voltage Cable Lines Construction pulse current method to charge partial discharge detection technology, it need to be in the ground line and coaxial electrical of cable run auxiliary device
Partial discharge signal is seized at cable, and for the outdoor cable terminal on cable termination tower, ground lead connection ground cable terminal
Between cable termination platform, ground lead is very short, general less than 1.5 meters, and outdoor cable terminal tip electrode is exposed, is unable to satisfy
110kV and the requirement of above safe distance, therefore, do not have live detection condition；And membrane electrode method is due to general
Ground level installation membrane electrode far from outdoor cable terminal away from while it is high to detect Partial discharge signal frequency, high frequency partial discharge letter
Number have the characteristics that big with range attenuation, therefore, in ground detection high-altitude, the outdoor cable end-availability of installation is low.
Utility model content
Technical problem to be solved by the utility model is to provide outdoor cable terminals on a kind of tower to charge very high frequency(VHF) office
Test device is put, is gone up to the air using UAV flight's very high frequency(VHF) acquisition device close to by the outdoor cable terminal on the cable termination tower of side
Carry out very high frequency(VHF) partial discharge detection, overcomes the low defect of the outdoor cable end-availability of detection high-altitude installation on the ground.
In order to solve the above-mentioned technical problem, the utility model provides outdoor cable terminal electrification very high frequency(VHF) partial discharge on a kind of tower
Test device, comprising:
For obtaining UAV flight's lift-off equipment of very high frequency(VHF) partial discharge test signal and for obtaining cable body voltage
Signal simultaneously tests the ground machine operation equipment that signal and voltage signal are shown to the very high frequency(VHF) partial discharge of acquisition, and the unmanned plane is taken
Lift-off equipment and the operation equipment communication connection of described ground machine are carried,
Wherein UAV flight's lift-off equipment includes unmanned plane and tests adopting for signal for obtaining very high frequency(VHF) partial discharge
Acquisition means, the acquisition device are equipped on the unmanned plane.
Wherein, the test device further includes optical fiber, and UAV flight's lift-off equipment and described ground machine operate equipment
It is connected by the fiber optic communication.
Wherein, the acquisition device includes: very high frequency(VHF) sensor, signal processing unit and the first photoelectric converter, described
Very high frequency(VHF) sensor is electrically connected with the input terminal of the signal processing unit, the output end of the signal processing unit and described the
The input terminal of one photoelectric converter connects, and the output end of first photoelectric converter is connect with the optical fiber.
Wherein, the acquisition device further includes the first connecting cable, and the very high frequency(VHF) sensor is connected by described first
Cable is connect with the input terminal of the signal processing unit, and the output end of the signal processing unit passes through the first connection electricity
Cable is connect with the input terminal of first photoelectric converter.
Wherein, the signal processing unit includes: signal amplification unit and filter, the input of the signal amplification unit
End is connect with the very high frequency(VHF) sensor, and the output end of the signal amplification unit is connect with the input terminal of the filter, institute
The output end for stating filter is connect by first connecting cable with the input terminal of first photoelectric converter.
Wherein, the signal processing unit further include: input terminal Overvoltage protecting unit and output end Overvoltage protecting unit, institute
The input terminal for stating input terminal Overvoltage protecting unit is connect with the sensor, the output end of the input terminal Overvoltage protecting unit with
The input terminal of the amplifying unit connects, the input terminal of the output end Overvoltage protecting unit and the output end of the amplifying unit
Connection, the output end of the output end Overvoltage protecting unit are connect with the input terminal of the filter.
Wherein, described ground machine operation equipment includes synchronizing power frequency mutual inductor, oscillograph and the second photoelectric converter, described same
Step power frequency mutual inductor is connect with the second channel of the oscillograph, the output end and the oscillograph of second photoelectric converter
First passage connection, the input terminal of second photoelectric converter connect with the output end of first photoelectric converter.
Wherein, described ground machine operation equipment further includes the second connecting cable, and the synchronous power frequency mutual inductor passes through described the
Two connecting cables are connect with the second channel of the oscillograph, and the output end of second photoelectric converter connects by described first
Cable is connect to connect with the first passage of the oscillograph.
Wherein, described ground machine operates equipment further include: the unmanned controller for being controlled unmanned plane.
The beneficial effect of the utility model embodiment is: carrying out very high frequency(VHF) by the way that capture setting to be mounted on unmanned plane
Test overcomes the defect on the outdoor cable end-availability ground of detection high-altitude installation on the ground, improves electrical outdoor on tower
The validity of cable terminal test can find partial discharge defect in time, prevent direct equipment fault bring, indirect loss and society
It influences, there is very high economy and society value.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is that outdoor cable terminal charges very high frequency(VHF) partial discharge test device on a kind of tower of the utility model embodiment
Structural schematic diagram.
Fig. 2 is that outdoor cable terminal electrification very high frequency(VHF) partial discharge test device carries out on tower on the tower of the utility model embodiment
The schematic diagram of outdoor cable terminal live testing.
Fig. 3 is the very high frequency(VHF) partial discharge test signal of the live testing device acquisition of an embodiment of the present invention.
Fig. 4 is the very high frequency(VHF) partial discharge test signal of the live testing device acquisition of an embodiment of the present invention.
Fig. 5 is the very high frequency(VHF) partial discharge test signal of the live testing device acquisition of an embodiment of the present invention.
Specific embodiment
The explanation of following embodiment be with reference to attached drawing, can be to the particular implementation implemented to example the utility model
Example.
It please refers to shown in Fig. 1, the utility model embodiment one provides outdoor cable terminal electrification very high frequency(VHF) office on a kind of tower
Test device is put, including for obtaining very high frequency(VHF) partial discharge test signal UAV flight lift-off equipment A and in acquisition cable body
Voltage signal simultaneously tests the ground machine that signal and voltage signal are shown to the very high frequency(VHF) partial discharge of acquisition and operates equipment B, wherein without
Man-machine carrying lift-off equipment A includes unmanned plane 11 and the acquisition device for obtaining very high frequency(VHF) partial discharge test signal, the acquisition
Device is equipped on the unmanned plane 11, the UAV flight lift-off equipment A and the operation equipment B communication connection of described ground machine.
Wherein, the test device further includes optical fiber 9, and the unmanned plane and described ground machine operation equipment pass through the optical fiber
9 communication connections.
In a specific embodiment, the unmanned plane 11 is mostly outstanding wing unmanned plane, and load is not less than 6kg, has GPS
Positioning stablity system, it is seen that light wide-angle lens, cruise duration are not less than 20 minutes.
In a specific embodiment, the acquisition device includes: very high frequency(VHF) sensor 3, signal processing unit 2 and first
Photoelectric converter 7, the very high frequency(VHF) sensor 3 are electrically connected with the input terminal of the signal processing unit 2, the signal processing list
The output end of member 2 is connect with the input terminal of first photoelectric converter 7, the output end of first photoelectric converter 7 and institute
State the connection of optical fiber 9.
Specifically, the bandwidth of the very high frequency(VHF) sensor 3 is 80-200MHz;For seizing very high frequency(VHF) signal.
Specifically, first photoelectric converter 7 is analog photoelectricity converter, and highest frequency is not less than 500MHZ.
In a specific embodiment, the acquisition device further includes the first connecting cable 5, the very high frequency(VHF) sensor 3
It is connect by first connecting cable 5 with the input terminal of the signal processing unit 2, the output of the signal processing unit 2
End is connect by first connecting cable 5 with the input terminal of first photoelectric converter 7.
In a specific embodiment, the signal processing unit 2 includes: signal amplification unit 2-2 and filter 2-4,
The input terminal of the signal amplification unit 2-2 is connect with the very high frequency(VHF) sensor 3, the output of the signal amplification unit 2-2
End is connect with the input terminal of the filter 2-4, and the output end of the filter 2-4 passes through first connecting cable 5 and institute
State the input terminal connection of the first photoelectric converter 9.
Specifically, the amplification factor of the signal amplification unit 2-2 is greater than 30db, for seizing to very high frequency(VHF) sensor 3
Small-signal amplifies.
Specifically, the filter 2-3 is bandpass filter, bandwidth 80-200MHz, by excessively high and excessively low-frequency signal
It filters out, reduces irrelevant signal, improve detection reliability.
In a specific embodiment, the signal processing unit 2 further include: input terminal Overvoltage protecting unit 2-1 and defeated
Outlet Overvoltage protecting unit 2-3, the input terminal of the input terminal Overvoltage protecting unit 2-1 are connect with the very high frequency(VHF) sensor 3,
The output end of the input terminal Overvoltage protecting unit 2-1 is connect with the input terminal of the amplifying unit 2-2, the output end over-voltage
The input terminal of protection location 2-3 is connect with the output end of the amplifying unit 2-2, the output end Overvoltage protecting unit 2-3's
Output end is connect with the input terminal of the filter 2-4.
Specifically, its pressure limiting of the input terminal Overvoltage protecting unit 2-1 is less than 6.5V, for protecting signal processing unit not
It is damaged by too high voltages.
Specifically, the output end Overvoltage protecting unit 2-3 pressure limiting is less than 10V, protects signal processing unit not excessively high
Voltage damage.
In a specific embodiment, ground machine operation equipment includes synchronous power frequency mutual inductor 4, oscillograph 1 and the second light
Electric transducer 8, the synchronous power frequency mutual inductor 4 are connect with the second channel CH2 of the oscillograph 1, second photoelectric conversion
The output end of device 8 is connect with the first passage CH1 of the oscillograph 1, the input terminal of second photoelectric converter 8 and described the
The output end of one photoelectric converter 7 connects.
Specifically, which is 20Mv/200A, and two grades of 200mV/200A adjustable, for cable body
The acquisition of voltage signal provides voltage-phase foundation for Partial discharge signal identification.
Specifically, the oscillograph 1 is multichannel oscillograph, and the sample rate of the oscillograph is greater than 1G, storage depth is greater than
20M, acquisition and analysis for very high frequency(VHF) signal.
Specifically, which is analog quantity photoelectric converter, and highest frequency is not less than 500MHz.
In a specific embodiment, described ground machine operation equipment further includes the second connecting cable 6, and the synchronous power frequency is mutual
Sensor 4 is connect by second connecting cable 6 with the second channel CH2 of the oscillograph 1, second photoelectric converter 8
Output end connect with the first passage CH1 of the oscillograph 1 by first connecting cable 5.
In a specific embodiment, described ground machine operates equipment further include: nobody for being controlled to unmanned plane
Set remote-controller 10.
Outdoor cable terminal on above-mentioned tower, which is illustrated, referring to Fig. 2 charges very high frequency(VHF) partial discharge test device.The electricity
Equipment includes: cable termination tower 12, cable termination 13, cable 14 and cable termination inspection platform 15 on cable terminal tower.It will be upper
It states after the completion of device connects, synchronous power frequency mutual inductor 4 is installed on by the corresponding ground cable body 14 of side cable termination, so
The power supply of oscillograph and amplifying unit is opened afterwards, above-mentioned acquisition device enters detection working condition, then opens the power supply of unmanned plane,
It is gone up to the air using remote control control unmanned plane and overhauls near terminal and hovered near cable termination pedestal level to detection cable, and
And distance 110KV outdoor cable terminal top bare exposed conductor distance is more than 1.5m, 220KV outdoor cable terminal top bare exposed conductor
Distance is more than 2.5m, it is ensured that has enough safe distances, will can carry out cable termination very high frequency(VHF) after manipulation unmanned plane hovering
Partial discharge detection.
Specifically very high frequency(VHF) Partial discharge signal can be obtained by following operation in monitoring process:
(1) the trunnion axis time scale of oscillograph is adjusted, so that a screen shows that time width is a power frequency period, specifically
Ground, the trunnion axis time scale for adjusting oscillograph is 2ms, so that a screen shows that time width is 20ms, as a power frequency week
Time phase；
(2) adjustment very high frequency(VHF) sensor access channel C H1 amplitude maximum is suitable to that can be displayed in full screen, and vertically occupies
In；
(3) the synchronous power frequency mutual inductor 4 of adjustment oscillograph accesses channel C H2 amplitude maximum to can be displayed in full screen a work
Frequency periodic signal, vertical center, and show as above channel C H1 signal；
(4) be arranged channel C H1 or CH2 triggering mode be edging trigger, and be arranged appropriate value to can make channel C H1 or
CH2 triggering；
(5) one shot mode is used, it is static after triggering signal, it obtains mono- power frequency period of channel C H1 and channel C H2 and adopts
Collect data, as in Figure 3-5.
In figs. 3-5, sine wave signal 21 is power frequency synchronizing signal, and continuous intensive signal 22 is basic noise signal,
Signal identification degree greater than 1 times of basic noise signal peak or more is high, can recognize minimum as Partial discharge signal, i.e., makes an uproar substantially
Partial discharge detection sensitivity corresponding to sound.
In a power frequency period, it is present in a three quadrant signal clock synchronization, and there is half of power frequency period time 10ms
The signal at interval, and the signal can be detected continuously or discontinuously at certain time intervals, then and the signal is very high frequency(VHF) partial discharge letter
Numbers 24, signal in addition to this is non-very high frequency(VHF) Partial discharge signal 23.
Outdoor cable terminal electrification very high frequency(VHF) partial discharge test device will be by that will acquire dress on the tower of the utility model embodiment
It sets and is mounted in progress very high frequency(VHF) test on unmanned plane, overcome the outdoor cable end-availability of detection high-altitude installation on the ground
Low defect improves the validity of outdoor cable terminal test on tower, can find partial discharge defect in time, prevent equipment fault band
The direct, indirect loss and social influence come have very high economy and society value.
Above disclosures are merely preferred embodiments of the utility model, the utility model cannot be limited with this certainly
Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.
Claims (9)
1. outdoor cable terminal charges very high frequency(VHF) partial discharge test device on a kind of tower characterized by comprising very high for obtaining
Frequency partial discharge tests UAV flight's lift-off equipment of signal and for obtaining cable body voltage signal and to the very high frequency(VHF) of acquisition
The ground machine operation equipment that partial discharge test signal and voltage signal are shown, UAV flight's lift-off equipment and described ground machine
Equipment communication connection is operated,
Wherein UAV flight's lift-off equipment includes unmanned plane and the acquisition dress for obtaining very high frequency(VHF) partial discharge test signal
It sets, the acquisition device is equipped on the unmanned plane.
2. test device according to claim 1, which is characterized in that the test device further includes optical fiber, it is described nobody
Machine carries lift-off equipment and is connected with described ground machine operation equipment by the fiber optic communication.
3. test device according to claim 2, which is characterized in that the acquisition device includes: very high frequency(VHF) sensor, letter
Number processing unit and the first photoelectric converter, the very high frequency(VHF) sensor are electrically connected with the input terminal of the signal processing unit,
The output end of the signal processing unit is connect with the input terminal of first photoelectric converter, first photoelectric converter
Output end is connect with the optical fiber.
4. test device according to claim 3, which is characterized in that the acquisition device further includes the first connecting cable,
The very high frequency(VHF) sensor is connect by first connecting cable with the input terminal of the signal processing unit, at the signal
The output end of reason unit is connect by first connecting cable with the input terminal of first photoelectric converter.
5. test device according to claim 4, which is characterized in that the signal processing unit includes: that signal amplification is single
Member and filter, the input terminal of the signal amplification unit are connect with the very high frequency(VHF) sensor, the signal amplification unit
Output end is connect with the input terminal of the filter, and the output end of the filter passes through first connecting cable and described the
The input terminal of one photoelectric converter connects.
6. test device according to claim 5, which is characterized in that the signal processing unit further include: input terminal mistake
Protection location and output end Overvoltage protecting unit are pressed, the input terminal and the sensor of the input terminal Overvoltage protecting unit connect
It connects, the output end of the input terminal Overvoltage protecting unit is connect with the input terminal of the amplifying unit, and the output end over-voltage is protected
Shield unit input terminal connect with the output end of the amplifying unit, the output end of the output end Overvoltage protecting unit with it is described
The input terminal of filter connects.
7. test device according to claim 6, which is characterized in that it includes synchronous power frequency mutual inductance that described ground machine, which operates equipment,
Device, oscillograph and the second photoelectric converter, the synchronous power frequency mutual inductor are connect with the second channel of the oscillograph, and described
The output end of two photoelectric converters is connect with the first passage of the oscillograph, the input terminal of second photoelectric converter and institute
State the output end connection of the first photoelectric converter.
8. test device according to claim 7, which is characterized in that described ground machine operation equipment further includes the second connection electricity
Cable, the synchronous power frequency mutual inductor are connect by second connecting cable with the second channel of the oscillograph, and described second
The output end of photoelectric converter is connect by first connecting cable with the first passage of the oscillograph.
9. test device according to claim 7, which is characterized in that described ground machine operates equipment further include: for nothing
The man-machine unmanned controller controlled.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821067449.XU CN208350930U (en) | 2018-07-06 | 2018-07-06 | Live very high frequency partial discharge testing device for outdoor cable terminal on tower |
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| CN201821067449.XU CN208350930U (en) | 2018-07-06 | 2018-07-06 | Live very high frequency partial discharge testing device for outdoor cable terminal on tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031060A (en) * | 2018-07-06 | 2018-12-18 | 深圳供电局有限公司 | Live very high frequency partial discharge testing device and method for outdoor cable terminal on tower |
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2018
- 2018-07-06 CN CN201821067449.XU patent/CN208350930U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031060A (en) * | 2018-07-06 | 2018-12-18 | 深圳供电局有限公司 | Live very high frequency partial discharge testing device and method for outdoor cable terminal on tower |
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