CN207923049U - A kind of overhead transmission line grounded-line icing measuring system - Google Patents
A kind of overhead transmission line grounded-line icing measuring system Download PDFInfo
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- CN207923049U CN207923049U CN201820393529.8U CN201820393529U CN207923049U CN 207923049 U CN207923049 U CN 207923049U CN 201820393529 U CN201820393529 U CN 201820393529U CN 207923049 U CN207923049 U CN 207923049U
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Abstract
The utility model provides a kind of overhead transmission line grounded-line icing measuring system, is related to transmission route survey technical field.Multi-rotor flight device lower end is connected with electromagnetic wave measuring device in systems.Flight instruments controller sends flight control instruction to multi-rotor flight device, and multi-rotor flight device is flown at the overhead transmission line grounded-line to icing；Flight instruments controller sends measurement instruction to electromagnetic wave measuring device；Electromagnetic wave measuring device receives reflection of electromagnetic wave signal to the overhead transmission line grounded-line electromagnetic signals after icing；IF process signal is formed, and IF process signal is sent to ground monitoring device；So that ground monitoring device can determine overhead transmission line grounded-line ice covering thickness according to IF process signal.The utility model can solve current icing measurement method and operating personnel is needed to carry the measurement of measuring instrument climbing tower mostly, complex and dangerous, and the problem that the mode result measured indirectly is not accurate enough.
Description
Technical field
The utility model is related to transmission route survey technical field more particularly to a kind of overhead transmission line grounded-line icing
Measuring system.
Background technology
With greatly developing for national grid, important component of the current overhead transmission line as power grid, time
Cloth is in all parts of the country.With the continuous variation of weather, other than it will appear serious frost sleety weather in China northern territory, I
State southern areas have also suffered from serious frost sleet and have congealed disaster in recent years.When overhead transmission line congeals by frost sleet
After disaster, be susceptible to line tripping, broken string and accidents such as tower, safe and stable operation to electric system in all parts of the country and
Supply of electric power brings strong influence and threat.Powerline ice-covering phenomenon is very universal in power transmission and transformation system, and icing can draw
Conductor galloping, shaft tower is played to tilt and collapse, break and the problems such as insulator arc-over, bring great inconvenience to production and life, together
When also result in huge economic loss.China region is wide, with a varied topography, is the country by icing disaster most serious
One.
To overhead transmission line carry out ice coating state detection can be accurate, full and accurate record icing process, seriously covering
Ice damage evil dispatches network load before occurring, and starts ice-melting device, effectively avoids the generation of disaster, be of great significance.Circuit covers
The thickness of ice ice sheet is difficult to directly obtain, and is generally used indirect measurement method, is obtained by the relation indirect of thickness and other amounts
It arrives.Detection method generally comprises a variety of：For example, measuring the characteristic size of ice sheet with micrometer, meter ruler equivalent utensil；Alternatively, claiming
Take the icing quality on a section lead, the icing quality being converted on unit length conducting wire, then with design when calculation formula used
Calculate the average equivalent ice covering thickness of conducting wire；Alternatively, after transmission line icing, the loading on conducting wire generates an increment, this increment
The as quality of icing, it is similar to ice sample detection of weighing, circuit design ice matter thickness can be converted to by formula；Alternatively, conducting wire
Inclination angle arc sag method；Alternatively, installing video-unit in the equipment such as shaft tower, the icing image on conducting wire is shot, image procossing is passed through
Technology obtains the characteristic size of ice coating wire, is then calculated by model, finally obtains equivalent ice covering thickness；Alternatively, such as light
The instruments detection mode such as fiber sensor, the inspection of resistance and capacitance, laser measurement.
It is measured however, current icing measurement method needs operating personnel to carry measuring instrument climbing tower mostly, it is relatively complicated
Complexity, and it is more dangerous；In addition, the mode measured indirectly is but also the result of icing measurement is not accurate enough.
Utility model content
The embodiments of the present invention provide a kind of overhead transmission line grounded-line icing measuring system, to solve currently
Icing measurement method needs operating personnel to carry the measurement of measuring instrument climbing tower, relatively complicated complexity, and more danger mostly, and existing
There are the various modes measured indirectly but also the not accurate enough problem of result that icing measures.
In order to achieve the above objectives, the utility model adopts the following technical solution：
A kind of overhead transmission line grounded-line icing measuring system, including：Multi-rotor flight device, flight instruments control
Device, ground monitoring device；The multi-rotor flight device lower end is connected with electromagnetic wave measuring device；More rotor flying dresses
It sets, flight instruments controller, ground monitoring device wirelessly communicate connection two-by-two；The electromagnetic wave measuring device is supervised with the ground
Control device and flight instruments controller communicate to connect respectively；
The flight instruments controller, for sending flight control instruction to multi-rotor flight device, so that more rotors
Flight instruments fly at the overhead transmission line grounded-line to icing；
The flight instruments controller is additionally operable to send measurement instruction to electromagnetic wave measuring device；
The electromagnetic wave measuring device is used for the overhead transmission line grounded-line electromagnetic signals after icing, and
Receive the reflection of electromagnetic wave signal of the overhead transmission line grounded-line after icing；Lead wire and earth wire in transmission line icing thickness is maked somebody a mere figurehead to measure
Degree.
Specifically, the electromagnetic wave measuring device includes controller circuitry, transmitting antenna and reception antenna；The controller
Circuit includes signal transmitting and receiving module and IF signal processing module；The signal transmitting and receiving module includes voltage controlled oscillator, first band
Bandpass filter, power splitter, the first amplifier, the second amplifier, third amplifier, the second bandpass filter and low noise amplification
Device；The IF signal processing module includes frequency mixer, low-pass filter and processing circuitry of intermediate frequency；
After the voltage controlled oscillator, the first bandpass filter, power splitter and the first amplifier are sequentially connected in series, described first puts
The output end of big device connects the transmitting antenna；
After the voltage controlled oscillator, the first bandpass filter, power splitter and the second amplifier are sequentially connected in series, described second puts
The output end of big device connects an input terminal of the frequency mixer；
After the reception antenna is sequentially connected in series with the low-noise amplifier, the second bandpass filter and third amplifier,
The output end of the third amplifier connects another input terminal of the frequency mixer；
The output end of the frequency mixer, the low-pass filter and processing circuitry of intermediate frequency are sequentially connected in series.
In addition, the electromagnetic wave measuring device, is specifically used for：
Preset modulation voltage is inputted to the voltage controlled oscillator, to generate linear FM signal by voltage controlled oscillator；
The linear FM signal is input to the first bandpass filter, is filtered, and is input to the work(point
Device；
First part's signal and second part signal are formed by the power splitter, first part's signal passes through first
After amplifier enhanced processing, emit outward by the transmitting antenna, forms electromagnetic wave signal；
The reflection of electromagnetic wave signal is received by the reception antenna, by low-noise amplifier, the second bandpass filtering
After device and third amplifier are handled successively, it is input to frequency mixer with the second part signal, and carry out by the frequency mixer
Frequency mixing processing, then low-pass filtering treatment is carried out by the low-pass filter, then intermediate frequency is formed by the processing circuitry of intermediate frequency
Handle signal.
A kind of overhead transmission line grounded-line icing measuring system that the utility model embodiment provides, passes through flight instruments
Controller sends flight control instruction to multi-rotor flight device, the making somebody a mere figurehead to icing so that multi-rotor flight device is flown
At lead wire and earth wire in transmission line；Flight instruments controller sends measurement instruction to electromagnetic wave measuring device later；To which electromagnetic wave is surveyed
Device is measured to the overhead transmission line grounded-line electromagnetic signals after icing, and receives the overhead transmission line after icing and leads
The reflection of electromagnetic wave signal of ground wire；Lead wire and earth wire in transmission line ice covering thickness is maked somebody a mere figurehead to measure.As it can be seen that can be with by the utility model
Realize that remote electromagnetic wave detection lead wire and earth wire in transmission line icing measures, climbing tower measures in person without operating personnel, simultaneously
It is more accurate using the result of electromagnetic wave detection, it avoids current icing measurement method and operating personnel is needed to carry measurement mostly
Instrument climbing tower measures, relatively complicated complexity, more dangerous, and the mode measured indirectly is but also the result of icing measurement is not accurate enough
True problem.
Description of the drawings
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, before not making the creative labor property
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is that a kind of structure for overhead transmission line grounded-line icing measuring system that the utility model embodiment provides is shown
It is intended to；
Fig. 2 is the structural schematic diagram for the electromagnetic wave measuring device that the utility model embodiment provides；
Fig. 3 is the measuring environment schematic diagram in the utility model embodiment；
Fig. 4 is the structural schematic diagram of the multi-rotor flight device in the utility model embodiment；
Fig. 5 is the differential structrue schematic diagram that the transmitting antenna in the utility model embodiment is related to；
Fig. 6 is the sampling principle schematic diagram of the reception antenna in the utility model embodiment.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1, the utility model embodiment provides a kind of overhead transmission line grounded-line icing measuring system 10, packet
It includes：Multi-rotor flight device 11, flight instruments controller 12, ground monitoring device 13；11 lower end of the multi-rotor flight device
It is connected with electromagnetic wave measuring device 14；The multi-rotor flight device 11, flight instruments controller 12,13 liang of ground monitoring device
Two wireless communication connections；The electromagnetic wave measuring device 14 is distinguished with the ground monitoring device 13 and flight instruments controller 12
Communication connection.
The flight instruments controller 12 is used to send flight control instruction to multi-rotor flight device 11, so that more rotors
At the flight to the overhead transmission line grounded-line 20 after icing of flight instruments 11.
The flight instruments controller 12 is additionally operable to send measurement instruction to electromagnetic wave measuring device 14.
The electromagnetic wave measuring device 14 is used for 20 electromagnetic signals of overhead transmission line grounded-line after icing, and
Receive the reflection of electromagnetic wave signal of the overhead transmission line grounded-line 20 after icing；According to the reflection of electromagnetic wave signal and electromagnetism
Wave signal forms IF process signal, and the IF process signal is sent to ground monitoring device 13.
The ground monitoring device 13 is used to, according to the IF process signal, determine that overhead transmission line grounded-line icing is thick
Degree.
Specifically, as shown in Fig. 2, the electromagnetic wave measuring device 14 includes controller circuitry 31, transmitting antenna 32 and connects
Receive antenna 33；The controller circuitry 31 includes signal transmitting and receiving module 301 and IF signal processing module 302；The signal is received
It includes voltage controlled oscillator 303, the first bandpass filter 304, power splitter 305, the amplification of the first amplifier 306, second to send out module 301
Device 307, third amplifier 308, the second bandpass filter 309 and low-noise amplifier 310；The IF signal processing module
302 include frequency mixer 311, low-pass filter 312 and processing circuitry of intermediate frequency 313.
The voltage controlled oscillator 303, the first bandpass filter 304, power splitter 305 and the first amplifier 306 are sequentially connected in series
Afterwards, the output end of first amplifier 307 connects the transmitting antenna 32.
The voltage controlled oscillator 303, the first bandpass filter 304, power splitter 305 and the second amplifier 307 are sequentially connected in series
Afterwards, the output end of second amplifier 307 connects an input terminal of the frequency mixer 311.
The reception antenna 33 and the low-noise amplifier 310, the second bandpass filter 309 and third amplifier 308
After being sequentially connected in series, the output end of the third amplifier 308 connects another input terminal of the frequency mixer 311；
The output end of the frequency mixer 311, the low-pass filter 312 and processing circuitry of intermediate frequency 313 are sequentially connected in series.
In addition, the electromagnetic wave measuring device 14, is specifically used for：
Preset modulation voltage is inputted to the voltage controlled oscillator 303, to generate linear frequency modulation by voltage controlled oscillator 303
Signal.Wherein, the slope of modulation voltage determines the frequency modulation rate of linear FM signal, and the range of the level value of modulation voltage is determined
The bandwidth of linear FM signal is determined.
The linear FM signal is input to the first bandpass filter 304, is filtered, and be input to the work(
Divide device 305.
First part's signal and second part signal are formed by the power splitter 305, first part's signal passes through
After first amplifier, 306 enhanced processing, emits outward by the transmitting antenna 32, form electromagnetic wave signal.
The reflection of electromagnetic wave signal of the overhead transmission line grounded-line 20 after icing, warp are received by the reception antenna 33
It crosses after low-noise amplifier 310, the second bandpass filter 309 and third amplifier 308 handle successively, believes with the second part
It number is input to frequency mixer 311, and Frequency mixing processing is carried out by the frequency mixer 311, then passes through the low-pass filter 312 and carries out
Low-pass filtering treatment, then IF process signal is formed by the processing circuitry of intermediate frequency 313.
In addition, in the reflection of electromagnetic wave signal of the overhead transmission line grounded-line 20 after reception antenna 33 receives icing,
It needs to carry out FIR (Finite Impulse Response, there is limit for length's unit impulse response) filtering, background elimination, automatic gain
And migration processing.FIR filtering refers to carrying out FIR filtering, removal device working band to reflection of electromagnetic wave signal in time-domain
Outer interference signal.Background elimination refers to using the removal such as the method for average, moving average method since multi-rotor flight device interference is drawn
The fixed clutter signal risen, the useful information for the reflection of electromagnetic wave signal that extraction grounded-line returns.Automatic gain refers to target electricity
Magnetic wave reflects weak output signal, is handled by automatic gain and improves reflection of electromagnetic wave signal amplitude；Migration processing refers to passing through offset
It handles, on the reflection of electromagnetic wave signal automatic homing to its true spatial location for making grounded-line and its icing.
In addition, requiring its system power dissipation when base that is small, small, light-weight, generating to believe in above controller circuit 31
Number and all kinds of control signal stabilizations.Generally using field programmable gate array (Field-Programmable Gate Array,
Abbreviation FPGA) carry out lightweight and low-power consumption design.
In addition, the ground monitoring device 13, is specifically used for：
According to the IF process signal, know that (60 ° to 90 ° of wave can be used in 32 electromagnetic signals of transmitting antenna
Beam angle emits high frequency electromagnetic wave signal outward) arrive the signal propagation duration that reception antenna 33 receives reflection of electromagnetic wave signal.
According to formula：Determine overhead transmission line grounded-line ice covering thickness H；Wherein, c is electromagnetic wave true
Aerial spread speed；ε is the relative dielectric constant of icing medium；T is that the signal propagates duration.
Specifically, the formulaIt can be used as under type obtains：
Assuming that dual-mode antenna spacing is d, overhead transmission line grounded-line ice covering thickness is H, as shown in figure 3, then receiving
The time of reflection of electromagnetic wave signal is：
Wherein, v is spread speed of the electromagnetic wave in icing medium：
In formula, c is the spread speed of electromagnetic wave in a vacuum；ε is the relative dielectric constant of icing medium.
Since d ＜ ＜ H (d is far smaller than H), can be ignored d, then obtain target depth calculation formula under normal conditions：
Herein, it is worth noting that, as shown in figure 4, the multi-rotor flight device 11 may include multiple co-axial rotor knots
Structure 110, airframe structure 112, landing gear structure 113；The quantity of the co-axial rotor structure 110 can be 4,6 or 8 (
In Fig. 4 for 6), in this way, VTOL, hovering and the contour difficulty of steering in situ may be implemented in multi-rotor flight device 11
Action.The co-axial rotor structure 110 connects the airframe structure 112, and the airframe structure 112 connects the landing gear structure
113.Further, the airframe structure 112 includes an aircraft platforms structure (being not shown in Fig. 4)；The aircraft platforms
Electromagnetic wave measuring device 14 (being not shown in Fig. 4) is also associated in structure.The multi-rotor flight device 11 can pass through airborne control
The compositions such as computer, attitude transducer system, position sensor are realized.Wherein STM32 systems may be used in airborne control computer
System processor；Inertial measurement component and electronic compass mainly may be used in attitude transducer system；Position sensor may be used
Global position system GPS (Global Position System) and height sensor sonar composition；Flight instruments controller can
To be made of servo-control system, servo-control system can by RC (Radio Controller, wireless controller) remote controler,
The compositions such as receiver and Servo-controller.
In addition, power millimicrosecond pulse signal transmitter technology may be used in the transmitting antenna 32, for millimicrosecond pulse
Signal generates, and such as step-recovery diode (SRD, Superfast Recovery Diode) device, silicon-controlled whole may be used
Flow device (SCR, Silicon Controlled Rectifier) and field-effect tube (FET, Field Effect
The extraordinary component such as Transistor), designs the circuit structures such as differential structrue (as shown in Figure 5) and Marx cascade structures, carries
High millimicrosecond pulse transmitter output pulse amplitude.
In addition, high sensitive receiver technology may be used in the reception antenna 33, you can to use equivalent sampling mode weight
Build reflection of electromagnetic wave signal.Equivalent sampling is a kind of transform sampling, and the periodic characteristics for receiving signal or weight paracycle is utilized
Multiple feature, only carries out primary or several sub-samplings within each period, after the period by multiple repetitions of signal, obtains energy
All samples of waveform in enough reconstruction signal a cycles.The sampling principle of reception antenna 33 is as shown in Figure 6.
A kind of overhead transmission line grounded-line icing measuring system that the utility model embodiment provides, passes through flight instruments
Controller sends flight control instruction to multi-rotor flight device, the making somebody a mere figurehead to icing so that multi-rotor flight device is flown
At lead wire and earth wire in transmission line；Flight instruments controller sends measurement instruction to electromagnetic wave measuring device later；To which electromagnetic wave is surveyed
Device is measured to the overhead transmission line grounded-line electromagnetic signals after icing, and receives the overhead transmission line after icing and leads
The reflection of electromagnetic wave signal of ground wire；Lead wire and earth wire in transmission line ice covering thickness is maked somebody a mere figurehead to measure.As it can be seen that can be with by the utility model
Realize that remote electromagnetic wave detection lead wire and earth wire in transmission line icing measures, climbing tower measures in person without operating personnel, simultaneously
It is more accurate using the result of electromagnetic wave detection, it avoids current icing measurement method and operating personnel is needed to carry measurement mostly
Instrument climbing tower measures, relatively complicated complexity, more dangerous, and the mode measured indirectly is but also the result of icing measurement is not accurate enough
True problem.
It should be understood by those skilled in the art that, the embodiments of the present invention can be provided as method, system or computer
Program product.Therefore, the utility model can be used complete hardware embodiment, complete software embodiment or combine software and hardware
The form of the embodiment of aspect.Moreover, it wherein includes computer available programs that the utility model, which can be used in one or more,
Implement in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of code
The form of computer program product.
The utility model is produced with reference to according to the method, equipment (system) and computer program of the utility model embodiment
The flowchart and/or the block diagrams of product describes.It should be understood that can be realized by computer program instructions in flowchart and/or the block diagram
Each flow and/or block and flowchart and/or the block diagram in flow and/or box combination.These meters can be provided
Calculation machine program instruction is to the place of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices
Device is managed to generate a machine so that the instruction executed by computer or the processor of other programmable data processing devices is produced
Life is for realizing the function of being specified in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes
Device.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Specific embodiment is applied in the utility model to be expounded the principles of the present invention and embodiment, with
The explanation of upper embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for this field
Those skilled in the art, according to the thought of the utility model, there will be changes in the specific implementation manner and application range, comprehensive
Upper described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (3)
1. a kind of overhead transmission line grounded-line icing measuring system, which is characterized in that including：Multi-rotor flight device, flight
Setup Controller, ground monitoring device；The multi-rotor flight device lower end is connected with electromagnetic wave measuring device；More rotors
Flight instruments, flight instruments controller, ground monitoring device wirelessly communicate connection two-by-two；The electromagnetic wave measuring device with it is described
Ground monitoring device and flight instruments controller communicate to connect respectively；
The flight instruments controller, for sending flight control instruction to multi-rotor flight device, so that more rotor flyings
Device flies at the overhead transmission line grounded-line to icing；
The flight instruments controller is additionally operable to send measurement instruction to electromagnetic wave measuring device；
The electromagnetic wave measuring device is used for the overhead transmission line grounded-line electromagnetic signals after icing, and receives
The reflection of electromagnetic wave signal of overhead transmission line grounded-line after icing makes somebody a mere figurehead lead wire and earth wire in transmission line ice covering thickness to measure.
2. overhead transmission line grounded-line icing measuring system according to claim 1, which is characterized in that the electromagnetic wave
Measuring device includes controller circuitry, transmitting antenna and reception antenna；The controller circuitry includes signal transmitting and receiving module in
Audio signalprocessing module；The signal transmitting and receiving module includes voltage controlled oscillator, the first bandpass filter, power splitter, the first amplification
Device, the second amplifier, third amplifier, the second bandpass filter and low-noise amplifier；The IF signal processing module
Including frequency mixer, low-pass filter and processing circuitry of intermediate frequency；
After the voltage controlled oscillator, the first bandpass filter, power splitter and the first amplifier are sequentially connected in series, first amplifier
Output end connect the transmitting antenna；
After the voltage controlled oscillator, the first bandpass filter, power splitter and the second amplifier are sequentially connected in series, second amplifier
Output end connect an input terminal of the frequency mixer；
It is described after the reception antenna is sequentially connected in series with the low-noise amplifier, the second bandpass filter and third amplifier
The output end of third amplifier connects another input terminal of the frequency mixer；
The output end of the frequency mixer, the low-pass filter and processing circuitry of intermediate frequency are sequentially connected in series.
3. overhead transmission line grounded-line icing measuring system according to claim 2, which is characterized in that the electromagnetic wave
Measuring device is specifically used for：
Preset modulation voltage is inputted to the voltage controlled oscillator, to generate linear FM signal by voltage controlled oscillator；
The linear FM signal is input to the first bandpass filter, is filtered, and is input to the power splitter；
First part's signal and second part signal are formed by the power splitter, first part's signal is by the first amplification
After device enhanced processing, emit outward by the transmitting antenna, forms electromagnetic wave signal；
Receive the reflection of electromagnetic wave signal by the reception antenna, by low-noise amplifier, the second bandpass filter and
After third amplifier is handled successively, it is input to frequency mixer with the second part signal, and be mixed by the frequency mixer
Processing, then low-pass filtering treatment is carried out by the low-pass filter, then IF process is formed by the processing circuitry of intermediate frequency
Signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820393529.8U CN207923049U (en) | 2018-03-22 | 2018-03-22 | A kind of overhead transmission line grounded-line icing measuring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820393529.8U CN207923049U (en) | 2018-03-22 | 2018-03-22 | A kind of overhead transmission line grounded-line icing measuring system |
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ID=63596263
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534655A (en) * | 2018-03-22 | 2018-09-14 | 中国南方电网有限责任公司超高压输电公司曲靖局 | A kind of overhead transmission line grounded-line icing measuring system and method |
| CN109405881A (en) * | 2018-10-30 | 2019-03-01 | 重庆理工大学 | Device for monitoring icing of electric transmission line based on ice sheet dielectric property and rotated conductors |
-
2018
- 2018-03-22 CN CN201820393529.8U patent/CN207923049U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534655A (en) * | 2018-03-22 | 2018-09-14 | 中国南方电网有限责任公司超高压输电公司曲靖局 | A kind of overhead transmission line grounded-line icing measuring system and method |
| CN108534655B (en) * | 2018-03-22 | 2024-01-09 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Overhead transmission line ground wire icing measurement system and method |
| CN109405881A (en) * | 2018-10-30 | 2019-03-01 | 重庆理工大学 | Device for monitoring icing of electric transmission line based on ice sheet dielectric property and rotated conductors |
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