CN106501679A - Fault oscillograph work information remote monitoring, maintenance and fast browsing system - Google Patents
Fault oscillograph work information remote monitoring, maintenance and fast browsing system Download PDFInfo
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- CN106501679A CN106501679A CN201611054623.2A CN201611054623A CN106501679A CN 106501679 A CN106501679 A CN 106501679A CN 201611054623 A CN201611054623 A CN 201611054623A CN 106501679 A CN106501679 A CN 106501679A
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- sensor
- monitoring
- fault oscillograph
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- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
Abstract
The invention discloses a kind of fault oscillograph work information remote monitoring, safeguard and fast browsing system, including fault oscillograph, monitoring center and and monitoring unit, the portable monitoring unit includes the overhead track arranged along power network line, railcar and detent mechanism that the overhead rail is arranged, monitoring terminal is set in the railcar, the monitoring terminal includes sensor assembly, control module, video surveillance module, first communication module and superfrequency omnidirectional sensor receive amplification module, the fault oscillograph is connected with the monitoring center by second communication module, the railcar lower end arranges aircraft by hanging mechanism, superfrequency omnidirectional sensor described in the rotary setting of the aircraft lower end receives amplification module.The present invention simply uses the just achievable monitoring to whole electric network information and facility information of a small amount of sensor, is engaged with the fault oscillograph of power network line, quick Search and Orientation timely to trouble point.
Description
Technical field
The present invention relates to smart power grid fault diagnostic techniques field, and in particular to a kind of fault oscillograph work information is long-range
Monitoring, maintenance and fast browsing system.
Background technology
Fault oscillograph is used for power system, can be in system jam, and record failure is forward and backward automatically, exactly
The situation of change of the various electric parameters of process, by the analysis of these electric parameters, compares, to analyzing and processing accident, judging protection
Whether correct operation, improve the equal important role of safe operation of power system level.Fault oscillograph is to improve power system
The important automatics of safe operation, when power system is broken down or vibrates, it can be recorded in whole failure process automatically
The change of various electric parameters.Because the important function of fault oscillograph, its are more and more used in electrical network, but with electricity
The high speed development of network planning mould, the quantity of transmission line of electricity assume significantly growth, in O＆M one pattern, fault wave recording device are patrolled
Pose a big pressure depending on maintenance work.
Most current transmission line of electricity has realized automatic detecting, especially for ultra-high-tension power transmission line, every according to code regulation
Week is no less than 1 time.And the transmission line of electricity that in the past someone patrolled and examined then have normally make an inspection tour, the approach such as tour of relieving, compare and
Speech, unattended fault wave recording device are maked an inspection tour frequency and are decreased obviously, and cause wave recording device failure find in time, process.Real
In the maintenance work of border, deposit after a failure to monitoring center's printed waveform, it is found that fault wave recording device failure cannot provide waveform
Situation.Especially for remote transmission line of electricity, quick analysis and the emergency disposal of failure is greatly delayed.
A kind of fault recorder data based on scheduling electrical network of the disclosure of the invention of Application No. 201510017046.9 double
End fault localization system, including data interface module, DBM, data analysis module and fault localization module, the number
It is connected with the DBM with fault localization module according to interface module, data analysis module.The both-end failure of the present invention
Range-measurement system, by dispatch electrical network fault recorder data, extract be out of order before and after three-phase voltage, electric current, and with conversion
Matrix changes into sequence voltage, sequence electric current, and line parameter circuit value when realistic asks for event finally by the method for substituting solution quadratic equation with one unknown
Barrier distance, so that reduce operations staff's emergency repair time.But the invention does not have live routine inspection mode, with showing for fault oscillograph
Field coordinates dynamics inadequate.
Content of the invention
Problem to be solved by this invention is to provide a kind of fault oscillograph work information remote monitoring, maintenance and quickly clear
Look at system, the monitoring to whole electric network information and facility information is just can achieve using a small amount of sensor, with power network line
Fault oscillograph is engaged, and realizes omnibearing monitoring to electrical network, quick Search and Orientation timely to trouble point, is easy to quick solution
Electric network fault.
For solving above-mentioned technical problem, the technical solution used in the present invention is：
A kind of fault oscillograph work information remote monitoring, maintenance and fast browsing system, including being arranged on transmission line of electricity
Several fault oscillographs, monitoring center and coupled portable monitoring unit, the portable monitoring unit include
Set in overhead track, the railcar of overhead rail setting and detent mechanism, the railcar arranged along power network line
Monitoring terminal is put, the monitoring terminal includes sensor assembly, control module, video surveillance module, first communication module and spy
High frequency omnidirectional sensor receives amplification module, the control module and sensor assembly, video surveillance module, first communication module
Amplification module connection is received with superfrequency omnidirectional sensor, the fault oscillograph is by second communication module and the monitoring
The heart connects, and the railcar lower end arranges aircraft, superfrequency described in the rotary setting of the aircraft lower end by hanging mechanism
Omnidirectional's sensor receives amplification module, and the aircraft is wirelessly connected with the control module.
Further, the sensor assembly includes temperature sensor, humidity sensor, naked light sensor, rainfall sensing
Device, air velocity transducer.
Further, the video surveillance module includes being arranged on the carry-on miniature head, the micro cloud
Infrared camera and infrared thermography are set on platform.
Further, the monitoring center includes that industrial computer and database server, the monitoring center also set up VR and regard
Frequency glasses, arrange three-axis gyroscope and three axis accelerometer on the VR video eyeglasses.
Further, the positioner includes the overhead rail several sensing tanks spaced, described
Fiber-optic grating sensor is set in sensing tank, is connected by Transmission Fibers between several fiber-optic grating sensors described, institute
State higher than edge on the sensing tank at the top of fiber-optic grating sensor, the Transmission Fibers are arranged on the overhead rail and arrange
Cavity in.
Further, sense on tank along 0.5cm to 1cm higher than described at the top of the fiber-optic grating sensor.
Further, one end of the Transmission Fibers arranges wideband light source, and the other end of the Transmission Fibers passes through optical fiber
Raster grid analyzer is connected with the Surveillance center.
Further, the fiber-optic grating sensor two ends arrange inclined-plane cushion block.
Further, the hanging mechanism includes the L-type support of the railcar lower end setting and the aircraft upper end
Arrange two U-shaped arms, the L-type support openend the railcar lower end arrange expansion link, the expansion link with described
Control module connects, and the aircraft adopts four rotor wing unmanned aerial vehicles.
Further, superfrequency omnidirectional sensor receives amplification module includes omnidirectional wideband antenna and its preposition broadband
The conglomerate of amplifier.
Further, a width of 1GHz of the band of the wideband pre-amplifier, gain is 40dB.
Further, the control module includes single-chip microcomputer, and the first communication module and second communication module include
GPRS module.
The invention provides a kind of fault oscillograph work information remote monitoring, maintenance and fast browsing system, failure record
Ripple device can carry out record ripple to the failure of power network line, and shape information is sent to monitoring center by the second communication unit,
Monitoring center and portable monitoring unit telecommunication, are monitored to the situation at scene, are cooperated with fault oscillograph, energy
Enough fast searchings fault point, reduce the loss of failure.Monitoring unit is moveable, and overhead track is along power network line frame
If can build between shaft tower or additionally set up shaft tower and set up, overhead rail only needs to carry portable monitoring unit,
Therefore all very little the problems such as its load-bearing, construction cost are very low, and all things can be with prefabricated, erected on site, and need not be extra
Stringing, without debugging to substantial amounts of sensor, installing construction cost all can be very low.The sensor of monitoring terminal is employed
The environment temperature of temperature sensor monitors electrical network periphery, the ambient humidity of humidity sensor monitoring electrical network periphery, naked light sensor
Whether the ultraviolet in using naked light occurs to electrical network periphery that fire is monitored, rain sensor can be to the drop of electrical network periphery
Rainfall is monitored, air velocity transducer is monitored to the ambient wind of electrical network periphery, and cooperates with video surveillance module,
The temperature along the line to electrical network, humidity, fire, rainfall, wind speed, image/video etc. are monitored, can be to line ice coating, mudstone
The accidents such as stream, earthquake, strong wind, flood, fire realize monitoring, and by fault oscillograph record to during fault waveform with monitor its
Its information simultaneously solves a problem promptly to combination, quick diagnosis failure cause, fast searching trouble point.
Superfrequency omnidirectional sensor receives amplification module includes the integrated of omnidirectional wideband antenna and its wideband pre-amplifier
Body, the swivel base which is driven by electric rotating machine receive amplification module installing superfrequency omnidirectional sensor, in portable prison
Survey and the produced electromagnetic wave of transmission line of electricity grid power equipment defect electric discharge during unit is patrolled and examined, can be received, through described preposition
Its direction of propagation is calculated by control module after broad band amplifier amplification and follow-up filtering process, so as to realize to trouble point
Far and near judgement, finally searches out the particular location of trouble point, and during positional information is sent to monitoring by the first communication unit
The heart.Superfrequency omnidirectional sensor is received amplification module and is arranged by aircraft, can fly away from track, nearby transmission line of electricity is carried out
Investigation, can preferably find trouble point, and effect is more preferable.Hanging mechanism be used for suspend aircraft in midair, using when aircraft is put
Go out, for supporting aircraft when not using, prevent aircraft from dropping from railcar.
The present invention simply uses the just achievable monitoring to whole electric network information and facility information of a small amount of sensor, right
The usage amount of circuit, communication equipment and sensor is less, and the circuit of complexity need not be arranged in scene, and adopt overhead rail
Road, will not be impacted to the normal productive life of electrical network back, and be engaged with the fault oscillograph of power network line, to electrical network
Omnibearing monitoring is realized, quick Search and Orientation timely to trouble point is easy to quickly solve electric network fault.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the system construction drawing of the present invention；
Fig. 2 is the structural representation of positioner of the present invention；
Fig. 3 is the system construction drawing of positioner of the present invention；
Fig. 4 is the structural representation that superfrequency omnidirectional of the present invention sensor receives amplification module.
Specific embodiment
Technical solution of the present invention is further shown with reference to Fig. 1 to Fig. 4, specific embodiment is as follows：
Embodiment one
As shown in Figures 1 to 4：Present embodiments provide a kind of fault oscillograph work information remote monitoring, maintenance and quickly clear
Look at system, including several fault oscillographs 13, monitoring center 7 and the coupled movable type that are arranged on transmission line of electricity
Monitoring unit, the portable monitoring unit include setting on the overhead track 16 arranged along power network line, the overhead track 16
Monitoring terminal 25 is set in the railcar 24 that puts and positioner 5, the railcar 24, and the monitoring terminal 25 includes sensor
Module 10, control module 9, video surveillance module 11, first communication module 8 and the superfrequency being rotatably provided in the railcar
Omnidirectional's sensor receives amplification module 12, and the control module 9 is communicated with sensor assembly 10, video surveillance module 11, first
Module 8 and superfrequency omnidirectional sensor receive amplification module 12 and connect, the fault oscillograph 13 by second communication module 3 with
The monitoring center 7 connects, and 24 lower end of the railcar arranges aircraft 28 by hanging mechanism, and 28 lower end of the aircraft is revolved
Turn to arrange superfrequency omnidirectional sensor reception amplification module 12, the aircraft 28 and 9 wireless connection of the control module.
Fault oscillograph can carry out record ripple to the failure of power network line, and shape information is sent out by the second communication unit
Monitoring center, monitoring center and portable monitoring unit telecommunication is delivered to, the situation at scene is monitored, with failure wave-recording
Device cooperates, can fast searching fault point, reduce the loss of failure.Monitoring unit is moveable, hanger rail
Road is set up along power network line, can build or additionally set up shaft tower and set up between shaft tower, and overhead rail only needs to carry
Portable monitoring unit, therefore all very little the problems such as its load-bearing, construction cost are very low, all things can with prefabricated, erected on site,
And extra stringing is not needed, without debugging to substantial amounts of sensor, installing construction cost all can be very low.Monitoring terminal
Sensor employ the environment temperature of temperature sensor monitors electrical network periphery, humidity sensor monitor electrical network periphery environmental wet
Degree, naked light sensor using naked light in ultraviolet whether occur to electrical network periphery that fire is monitored, rain sensor can be with
The rainfall of electrical network periphery is monitored, air velocity transducer is monitored to the ambient wind of electrical network periphery, and is supervised with video
Survey module to cooperate, the temperature along the line to electrical network, humidity, fire, rainfall, wind speed, image/video etc. are monitored, can be right
The accidents such as line ice coating, mud-rock flow, earthquake, strong wind, flood, fire realize monitoring, and fault oscillograph record is arrived fault waveform
When with the other information for monitoring to combination, quick diagnosis failure cause, fast searching trouble point simultaneously solve a problem promptly.
Superfrequency omnidirectional sensor receives amplification module includes the integrated of omnidirectional wideband antenna and its wideband pre-amplifier
Body, the swivel base which is driven by electric rotating machine receive amplification module installing superfrequency omnidirectional sensor, in portable prison
Survey and the produced electromagnetic wave of transmission line of electricity grid power equipment defect electric discharge during unit is patrolled and examined, can be received, through described preposition
Its direction of propagation is calculated by control module after broad band amplifier amplification and follow-up filtering process, so as to realize to trouble point
Far and near judgement, finally searches out the particular location of trouble point, and during positional information is sent to monitoring by the first communication unit
The heart.Superfrequency omnidirectional sensor is received amplification module and is arranged by aircraft, can fly away from track, nearby transmission line of electricity is carried out
Investigation, can preferably find trouble point, and effect is more preferable.Hanging mechanism be used for suspend aircraft in midair, using when aircraft is put
Go out, for supporting aircraft when not using, prevent aircraft from dropping from railcar.
The sensor assembly 10 includes temperature sensor, humidity sensor, naked light sensor, rain sensor, wind speed
Sensor.
The video surveillance module 11 includes the miniature head 21 being arranged on the aircraft 28, the miniature head 21
Upper setting infrared camera 19 and infrared thermography 20.
The monitoring center 7 includes that industrial computer 4 and database server 6, the monitoring center 7 also set up VR video eyeglasses
2, three-axis gyroscope and three axis accelerometer are set on the VR video eyeglasses 2.
Video surveillance module carries out image/video monitoring along the line for electrical network, employs infrared camera and infrared thermal imaging
Instrument, is monitored to image/video and infrared thermal imaging respectively, on the one hand replaces staff to be patrolled and examined, on the other hand can be right
Interior temperature is monitored in a big way, finds disaster hidden-trouble in advance, can monitor whether circuit is short-circuited intensification, a distant place
Situations such as naked light burns, monitoring distant, and the two equipment are arranged on miniature head, and miniature head adopts two
Axle head, can be steered realization and each angle is observed.Be engaged with video surveillance module is arranged in monitoring center
VR video eyeglasses, and pass through to arrange three-axis gyroscope and three axis accelerometer in VR video eyeglasses, glasses can be monitored constantly
The angle information is converted to control information and sends the head of being simulated user to miniature head with this by deflection angle, industrial computer
Portion moves, and such user can not only be clearly visible that live view, and by three-axis gyroscope and three axis accelerometer with
The cooperation of miniature head so that user has kind and to substitute into sense, and monitoring is more followed one's bent, preferably substitutes along the line artificial of electrical network
Routine inspection mode.
Embodiment two
As shown in Figures 1 to 4：Which is with the difference of embodiment one：
The positioner 5 includes several sensing tanks 15 spaced, the sensing tank on the overhead track 16
Fiber-optic grating sensor 14 is set in 15, is connected by Transmission Fibers 17 between several fiber-optic grating sensors 14 described, institute
State higher than edge on the sensing tank 15 at the top of fiber-optic grating sensor 14, the Transmission Fibers 17 are arranged on the overhead track
In the cavity 18 arranged on 16.Fiber-optic grating sensor can realize the direct measurement to physical quantitys such as temperature, strains, work as walking
When the wheel of mechanism is pressed on fiber-optic grating sensor, which can strain, so as to be detected whether walking mechanism reaches light
Above fiber grating sensor, so as to realize fixed-point type actinometry.
Sense on tank 15 along 0.5cm to 1cm higher than described at the top of the fiber-optic grating sensor 14.Wideband light source sends
Signal, fiber grating Network Analyzer detect the change of signal wavelength and wavelength signals are converted to corresponding electric signal, prison
Control center is processed to the electric signal for receiving, and is under pressure so as to deformation so as to calculate which fiber-optic grating sensor,
It is achieved that the displacement measurement to walking mechanism.
One end of the Transmission Fibers 17 arranges wideband light source 26, and the other end of the Transmission Fibers 17 passes through fiber grating
Network Analyzer 27 is connected with the Surveillance center 7.Inclined-plane cushion block climbs up fiber-optic grating sensor beneficial to the wheel of walking mechanism,
Sensor is avoided to be subject to lateral impulsive force excessive, beneficial to protection equipment.
14 two ends of the fiber-optic grating sensor arrange inclined-plane cushion block 1, for carrying out to the fiber-optic grating sensor 21
Temperature-compensating.
Embodiment three
As shown in Figures 1 to 4：Which is with the difference of embodiment one：
The hanging mechanism includes two that the L-type support 32 of 24 lower end of railcar setting and 28 upper end of the aircraft are arranged
Individual U-shaped arm 30,32 openend of the L-type support arrange expansion link 29, the expansion link 29 and institute in 24 lower end of the railcar
State control module 9 to connect, the aircraft 28 adopts four rotor wing unmanned aerial vehicles.Aircraft is hung by two U-shaped arms when not in use
In L-type support, then the opening of L-type support is blocked by expansion link, it is to avoid the landing from L-type support of U-shaped arm, work as use
When, telescopic arm being controlled by control module and is withdrawn, aircraft just can fly out from L-type support.Aircraft using four rotors without
Man-machine, it is more preferable that the stationarity of its fuselage keeps, it is easier to passes in and out L-type support.
Superfrequency omnidirectional sensor receives amplification module 12 includes that omnidirectional wideband antenna 22 and its preposition broadband are amplified
The conglomerate 23 of device；The a width of 1GHz of the band of the wideband pre-amplifier 23, gain is 40dB.Superfrequency omnidirectional sensor connects
Receiving amplification module includes the conglomerate of omnidirectional wideband antenna and its wideband pre-amplifier, patrols and examines process in portable monitoring unit
In can receive transmission line of electricity grid power equipment defect electric discharge produced by electromagnetic wave, through the wideband pre-amplifier amplify
And its direction of propagation is calculated by control module after follow-up filtering process, so as to realize that the distance to trouble point judges, finally
The particular location of trouble point is searched out, and positional information is sent to monitoring center by the first communication unit.
The control module 9 includes single-chip microcomputer, and the first communication module 8 and second communication module 3 include GPRS module.
Single-chip microcomputer is a kind of IC chip, is the centre with data-handling capacity using very large scale integration technology
Manage device CPU, random access memory ram, read only memory ROM, multiple I/O mouths and interrupt the functions such as system, timer/counter
（The circuits such as display driver circuit, pulse-width modulation circuit, analog multiplexer, A/D converter may also be included）It is integrated into one
The little and perfect microcomputer system constituted on block silicon chip.First communication module and second communication module include GPRS
Module, the communication module long transmission distance and can realize wirelessly transmitting data, for the transmission extremely convenient to electric network data.
Finally illustrate, only in order to technical scheme to be described and unrestricted, this area is common for above example
Other modifications or equivalent that technical staff is made to technical scheme, without departing from technical solution of the present invention
Spirit and scope, all should cover in the middle of scope of the presently claimed invention.
Claims (10)
1. a kind of fault oscillograph work information remote monitoring, maintenance and fast browsing system, it is characterised in that：Including being arranged on
Several fault oscillographs, monitoring center and coupled portable monitoring unit on transmission line of electricity, the movable type
Monitoring unit includes overhead track, the railcar of overhead rail setting and detent mechanism, the institute arranged along power network line
State in railcar setting monitoring terminal, the monitoring terminal include sensor assembly, control module, video surveillance module, first
Communication module and superfrequency omnidirectional sensor receive amplification module, the control module and sensor assembly, video surveillance module,
First communication module and superfrequency omnidirectional sensor receive amplification module connection, and the fault oscillograph passes through second communication module
It is connected with the monitoring center, the railcar lower end arranges aircraft by hanging mechanism, the aircraft lower end rotation sets
Put superfrequency omnidirectional sensor and receive amplification module, the aircraft is wirelessly connected with the control module.
2. fault oscillograph work information remote monitoring as claimed in claim 1, maintenance and fast browsing system, its feature exist
In：The sensor assembly includes temperature sensor, humidity sensor, naked light sensor, rain sensor, air velocity transducer.
3. fault oscillograph work information remote monitoring as claimed in claim 1, maintenance and fast browsing system, its feature exist
In：The video surveillance module includes being arranged on the carry-on miniature head, arranges infrared taking the photograph on the miniature head
As head and infrared thermography.
4. fault oscillograph work information remote monitoring as claimed in claim 3, maintenance and fast browsing system, its feature exist
In：The monitoring center includes that industrial computer and database server, the monitoring center also set up VR video eyeglasses, and the VR is regarded
Three-axis gyroscope and three axis accelerometer are set on frequency glasses.
5. fault oscillograph work information remote monitoring as claimed in claim 1, maintenance and fast browsing system, its feature exist
In：The positioner includes the overhead rail several sensing tanks spaced, arranges in the sensing tank
Fiber-optic grating sensor, is connected by Transmission Fibers between several fiber-optic grating sensors described, the optical fiber grating sensing
Higher than edge on the sensing tank at the top of device, the Transmission Fibers are arranged in the cavity that the overhead rail is arranged.
6. fault oscillograph work information remote monitoring as claimed in claim 5, maintenance and fast browsing system, its feature exist
In：Sense on tank along 0.5cm to 1cm higher than described at the top of the fiber-optic grating sensor.
7. fault oscillograph work information remote monitoring as claimed in claim 6, maintenance and fast browsing system, its feature exist
In：One end of the Transmission Fibers arranges wideband light source, and the other end of the Transmission Fibers passes through fiber grating Network Analyzer
It is connected with the Surveillance center.
8. fault oscillograph work information remote monitoring as claimed in claim 7, maintenance and fast browsing system, its feature exist
In：The fiber-optic grating sensor two ends arrange inclined-plane cushion block.
9. fault oscillograph work information remote monitoring as claimed in claim 1, maintenance and fast browsing system, its feature exist
In：The hanging mechanism include two that the L-type support that the railcar lower end arranges and the aircraft upper end arrange U-shaped
Arm, the L-type support openend arrange expansion link in the railcar lower end, and the expansion link is connected with the control module,
The aircraft adopts four rotor wing unmanned aerial vehicles.
10. fault oscillograph work information remote monitoring as claimed in claim 1, maintenance and fast browsing system, its feature
It is：Superfrequency omnidirectional sensor receives amplification module includes the integrated of omnidirectional wideband antenna and its wideband pre-amplifier
Body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611054623.2A CN106501679A (en) | 2016-11-25 | 2016-11-25 | Fault oscillograph work information remote monitoring, maintenance and fast browsing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611054623.2A CN106501679A (en) | 2016-11-25 | 2016-11-25 | Fault oscillograph work information remote monitoring, maintenance and fast browsing system |
Publications (1)
| Publication Number | Publication Date |
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| CN106501679A true CN106501679A (en) | 2017-03-15 |
Family
ID=58328874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611054623.2A Pending CN106501679A (en) | 2016-11-25 | 2016-11-25 | Fault oscillograph work information remote monitoring, maintenance and fast browsing system |
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| CN107102238A (en) * | 2017-04-28 | 2017-08-29 | 国网河南省电力公司平顶山供电公司 | A kind of fault wave recording device remote online inspection platform |
| CN109270958A (en) * | 2018-11-20 | 2019-01-25 | 国网四川省电力公司广安供电公司 | A kind of transmission line malfunction quickly positions UAV system automatically |
| CN110208622A (en) * | 2018-07-27 | 2019-09-06 | 南京瑞贻电子科技有限公司 | A kind of portable oscillograph with power-off protection function |
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| CN109270958A (en) * | 2018-11-20 | 2019-01-25 | 国网四川省电力公司广安供电公司 | A kind of transmission line malfunction quickly positions UAV system automatically |
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