CN108983139A - A kind of fault detector test macro - Google Patents
A kind of fault detector test macro Download PDFInfo
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- CN108983139A CN108983139A CN201810989851.1A CN201810989851A CN108983139A CN 108983139 A CN108983139 A CN 108983139A CN 201810989851 A CN201810989851 A CN 201810989851A CN 108983139 A CN108983139 A CN 108983139A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
Abstract
The application provides a kind of fault detector test macro, wherein digital voltage signal is transmitted to voltage power output device by control device, and digital current signal is transmitted to current power output device；Voltage power output device exports first voltage signal；Current power output device exports the first current signal；Fault detector response first voltage signal and the first current signal to be measured, obtain first waveform；The first voltage signal that standard meter apparatus transmits and the first current signal are converted the second waveform by client server；If first waveform is consistent with the second waveform, fault detector to be measured is in normal operating condition.Client server is separated with control device, control device is set to test zone, client server is set to except test zone, operating personnel need to only control client server, it can carry out the test of fault detector to be measured, it solves in the prior art, staff needs the problem of operation is carried out under hyperbaric environment.
Description
Technical field
This application involves distribution terminal the field of test technology, and in particular to a kind of fault detector test macro.
Background technique
Fault detector is the device for being used to indicate distribution line failure, is usually mounted to distribution line branch point and user
Inlet wire etc..When the failures such as short trouble or singlephase earth fault occur for distribution line, fault detector issues fault alarm
It indicates, service personnel can indicate according to the fault alarm of fault detector, rapid fault point.If fault detector can not
It operates normally, then can not find the failure of distribution line in time, therefore, before fault detector comes into operation, need to event
Barrier indicator is tested.
Whether can be operated normally for test failure indicator, the prior art provides a kind of fault detector test macro,
The system includes signature waveform generator and industrial personal computer, wherein industrial personal computer is by pre-set analog signal transmission to feature
Waveform generator, signature waveform generator show input waveform according to the analog signal, and extremely by the analog signal transmission
Fault detector to be measured, and input waveform is transmitted to industrial personal computer.Wherein, defeated comprising voltage power in signature waveform generator
Unit and current power output unit out, signature waveform generator export the analog signal pair using voltage power output unit
The analog voltage signal answered exports the corresponding analog current signal of the analog signal using current power output unit, and will
The analog voltage signal and analog current signal are transmitted separately to fault detector to be measured.Fault detector to be measured is to simulation electricity
Pressure signal and analog current signal make a response, and export corresponding output waveform, and output waveform is transmitted to industrial personal computer, industry control
The input waveform of machine comparative feature waveform generator and the output waveform of fault detector to be measured, if unanimously, it is determined that be measured
Fault detector can operate normally.
But inventor has found in the research process of the application, signature waveform generator and industrial personal computer are in same work
Make region, and staff needs to manipulate industrial personal computer, so that industrial personal computer is by analog signal transmission to signature waveform generator, and leads to
The input waveform and output waveform for checking that industrial personal computer receives are crossed, judges whether fault detector to be measured can operate normally, this
It is required to the working region that staff is in where the industrial personal computer.And the voltage of signature waveform generator output is up to
10KV, industrial personal computer is identical as the working region where signature waveform generator, so that the working region is hyperbaric environment, leads to work
The danger coefficient of working environment is higher where making personnel.
Summary of the invention
The application provides a kind of fault detector test macro, needs to make under hyperbaric environment to solve staff
The problem of industry.
The application provides a kind of fault detector test macro, comprising: control device, client server, voltage power are defeated
Device, current power output device and standard meter apparatus out；
The control device passes the digital voltage signal for obtaining digital voltage signal and digital current signal
The voltage power output device is transported to, the digital current signal is transmitted to the current power output device；
The voltage power output device obtains first voltage signal, and will for amplifying the digital voltage signal
The first voltage signal is transmitted separately to the standard meter apparatus and fault detector to be measured；
The current power output device obtains the first current signal, and will for amplifying the digital current signal
First current signal is transmitted separately to the standard meter apparatus and fault detector to be measured；
The standard meter apparatus is for the first voltage signal received and first current signal to be transmitted to
The client server；
The fault detector to be measured obtains first for responding the first voltage signal and first current signal
Waveform, and the first waveform is transmitted to the client server；
The first voltage signal and first electricity that the client server is used to transmit the standard meter apparatus
Stream signal is converted into the second waveform, and whether the first waveform and second waveform are consistent；
If the first waveform is consistent with second waveform, the client server is for determining that the failure to be measured refers to
Show that device is in normal operating condition.
Optionally, the system also includes network camera devices；
The network camera device transmits described image for being taken pictures to obtain image to fault detector to be measured
To the client server；
The client server is used for according to second waveform, determine the fault detector to be measured whether board turning or
Flash of light, using the board turning of the fault detector to be measured determined according to the second waveform or non-flashing situations as target board turning or
Non-flashing situations；
The client server is used to obtain the board turning or non-flashing situations of fault detector to be measured in described image, compares
Whether the board turning or non-flashing situations and the target board turning or non-flashing situations of the fault detector to be measured are consistent；
If the board turning or non-flashing situations of the fault detector to be measured are consistent with the target board turning or non-flashing situations,
The client server is for determining that the board turning of the fault detector to be measured or flash function are normal.
Optionally, the system also includes 4G communication device, the 4G communication device refers to for realizing the failure to be measured
Show the communication between device and the client server.
Optionally, it is attached between the control device and the voltage power output device using optical fiber；
It is attached between the control device and the current power output device using optical fiber.
Optionally, ethernet communication is used between the control device and the standard meter apparatus；
Ethernet communication is used between the client server and the standard meter apparatus.
Optionally, ethernet communication is used between the client server and the 4G communication device.
Optionally, the control device includes: waveform generator, the first fiber optical transceiver and industrial personal computer；
The industrial personal computer is used to receive the pre-set status switch that the client server is sent, and by the state
Sequence is sent to waveform generator；
The waveform generator is used to obtain digital wave corresponding with the status switch according to the status switch
The digital waveform is converted digital voltage signal and digital current signal by shape, and by the digital voltage signal and number
Current signal is transmitted to the first fiber optical transceiver；
First fiber optical transceiver is used to the digital voltage signal being transmitted to the voltage power output device, will
The digital current signal is transmitted to the current power output device.
Optionally, the voltage power output device includes three voltage output devices, each voltage output device
Including the second fiber optical transceiver, voltage power amplifier unit and booster；
Second fiber optical transceiver is used to receive the digital voltage signal that the control device is sent；
Second fiber optical transceiver obtains analog voltage signal, and will be described for parsing the digital voltage signal
Analog voltage signal is sent to voltage power amplifier unit；
The voltage power amplifier unit is used to the analog voltage signal being sent to booster；
The booster is used to the analog voltage signal boosting to 0-10KV, obtains first voltage signal, and by institute
It states first voltage signal and is transmitted separately to the standard meter apparatus and fault detector to be measured.
Optionally, the current power output device includes three current output devices, each current output device
Including third fiber optical transceiver and current amplification unit；
The third fiber optical transceiver is used to receive the digital current signal that the control device is sent；
The third fiber optical transceiver obtains analog current signal, and will be described for parsing the digital current signal
Analog current signal is sent to current amplification unit；
The current amplification unit is believed for receiving the analog current signal using the analog current as the first electric current
Number, and first current signal is transmitted separately to the standard meter apparatus and fault detector to be measured.
Optionally, the standard meter apparatus include: three-phase voltage sampling plate, three-phase current sampling plate, voltage transformer and
Current transformer；
The three-phase voltage sampling plate is used to sample the voltage power output by the secondary side of the voltage transformer
The first voltage signal of device output；
The three-phase current sampling plate is used to sample the current power output device by the secondary side of current transformer
First current signal of output.
From the above technical scheme, the application provides a kind of fault detector test macro, in the system, user
Server is separated with control device, control device and voltage power output device, current power output device, standard meter apparatus,
Network camera device and fault detector to be measured are set to test zone jointly, and client server is set to except test zone,
Operating personnel need to only control client server, can carry out the test of fault detector to be measured, solve in the prior art, work
Personnel need the problem of operation is carried out under hyperbaric environment.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is a kind of structural schematic diagram of fault detector test macro provided by the embodiments of the present application；
Fig. 2 is the structural schematic diagram of another fault detector test macro provided by the embodiments of the present application；
Fig. 3 is the structural schematic diagram of another fault detector test macro provided by the embodiments of the present application.
Specific embodiment
To solve the problem of that staff needs to carry out operation under hyperbaric environment in the prior art, the application is provided
A kind of fault detector test macro.
Structural schematic diagram shown in referring to Fig.1, the application provide a kind of fault detector test macro, comprising: control dress
Set 100, client server 200, voltage power output device 300, current power output device 400 and standard meter apparatus 500.
In the system, the control device 100 is for obtaining digital voltage signal and digital current signal, and by institute
It states digital voltage signal and is transmitted to the voltage power output device 300, the digital current signal is transmitted to the electric current
Power output device 400.
Client server 200 pre-sets testing scheme, and client server 200 will be preset in the testing scheme
Status switch be transmitted to the control device 100, the status switch received is converted digital electricity by the control device 100
Press signal and digital current signal；Client server 200 also can use the mode of wave record playback, and recorder data is transmitted to institute
Control device 100 is stated, the recorder data received is converted digital voltage signal by the control device 100 and digital current is believed
Number.
In the system, the voltage power output device 300 is for amplifying the digital voltage signal, obtains the
One voltage signal, and the first voltage signal is transmitted separately to the standard meter apparatus 500 and fault detector to be measured
600。
In the system, the current power output device 400 is for amplifying the digital current signal, obtains the
One current signal, and first current signal is transmitted separately to the standard meter apparatus 500 and fault detector to be measured
600。
In the system, the standard meter apparatus 500 is for will the first voltage signal that receive and described the
One current signal is transmitted to the client server 200.
The standard meter apparatus 500 is the survey of fault detector for acquiring first voltage signal and the first current signal
Examination is provided referring to data.
In the system, the fault detector to be measured 600 is for responding the first voltage signal and described first
Current signal obtains first waveform, and the first waveform is transmitted to the client server 200.
Fault detector 600 to be measured can respond out phase according to the first voltage signal and the first current signal received
The first waveform answered, it is generally the case that fault detector 600 to be measured is provided with display interface, and can be shown in display interface
One waveform.If abnormal conditions occur in first voltage signal or the first current signal, the fault detector 600 to be measured is shown
First waveform be the corresponding waveform of abnormal conditions, by fault detector 600 to be measured be applied to distribution line when, staff's root
It can determine whether 600 place distribution line of fault detector to be measured with the presence or absence of abnormal according to first waveform.
In the system, first electricity that the client server 200 is used to transmit the standard meter apparatus 500
Pressure signal and first current signal are converted into the second waveform, the first waveform and second waveform whether one
It causes.
The second waveform is converted by first voltage signal that standard meter apparatus 500 transmits and the first current signal, with described
Second is standard, and whether the first waveform for judging that fault detector 600 to be measured transmits is consistent with second waveform, if first wave
Shape is consistent with the second waveform, it is determined that fault detector 600 to be measured is in normal operating condition；If first waveform and the second waveform
Inconsistent, then client server 200 determines the difference between first waveform and the second waveform, and determines that the formation of the difference is former
Cause overhauls fault detector 600 to be measured so that staff is according to the Crack cause of the difference.
In the system, if the first waveform is consistent with second waveform, the client server 200 is for true
The fixed fault detector 600 to be measured is in normal operating condition.
From the above technical scheme, the application provides a kind of fault detector test macro, in the system, user
Server 200 is separated with control device 100, control device 100 and voltage power output device 300, current power output device
400, standard meter apparatus 500, network camera device and fault detector to be measured 600 are set to test zone, user service jointly
Device 200 is set to except test zone, and operating personnel need to only control client server 200, can carry out fault detector to be measured
600 test solves in the prior art, and staff needs the problem of operation is carried out under hyperbaric environment.
Referring to structural schematic diagram shown in Fig. 2, the application provides a kind of fault detector test macro, in the system
In, it is attached between control device and voltage power device or current power device by optical fiber, the system also includes:
Network camera device.
The network camera device transmits described image for being taken pictures to obtain image to fault detector to be measured
To the client server.
In the embodiment of the present application, the network camera device is for taking pictures to fault detector to be measured, network shooting
It is attached between device and the client server by cable, during testing fault detector to be measured,
Client server control network camera device takes pictures to fault detector to be measured, the initial time taken pictures, terminate the time with
And time interval can be set.Only fault detector to be measured takes pictures resulting Image Real-time Transmission to user to network camera device
Server, client server record the variation of fault detector to be measured in image, wherein the change of fault detector to be measured
Change mainly includes board turning or flash of light.
The client server is used for according to second waveform, determine the fault detector to be measured whether board turning or
Flash of light, using the board turning of the fault detector to be measured determined according to the second waveform or non-flashing situations as target board turning or
Non-flashing situations.
In the embodiment of the present application, due to the input number that first voltage signal and the first current signal are fault detector to be measured
According to, and the second waveform is transformed by first voltage signal and the first current signal, therefore, client server is according to the second waveform
Predict whether fault detector to be measured should board turning or flash of light.
The client server is used to obtain the board turning or non-flashing situations of fault detector to be measured in described image, compares
Whether the board turning or non-flashing situations and the target board turning or non-flashing situations of the fault detector to be measured are consistent.
In the embodiment of the present application, fault detector to be measured is according to the abnormal feelings of first voltage signal and the first current signal
Condition, it is determined whether board turning or flash of light, and corresponding movement is made, since network camera device is constantly treated during the test
It surveys fault detector to take pictures, and the gained image transmitting that will take pictures, to client server, therefore, client server can basis
Image obtains the board turning or non-flashing situations of fault detector to be measured.
If the board turning or non-flashing situations of the fault detector to be measured are consistent with the target board turning or non-flashing situations,
The client server is for determining that the board turning of the fault detector to be measured or flash function are normal.
In the embodiment of the present application, if the board turning or non-flashing situations of the fault detector to be measured and the target board turning or
Person's non-flashing situations are inconsistent, and client server can determine that the board turning of the fault detector to be measured or flash function are abnormal,
Wherein, it there are two types of abnormal conditions possibility, first is that fault detector to be measured can normally issue board turning or flash of light instruction, and executes
The damage parts of board turning or flashing action, for example, in the case where flash lamp damage, even if fault detector to be measured issues sudden strain of a muscle
Light instruction, flash lamp can not also execute flashing action；Second is that fault detector to be measured cannot normally issue board turning or flash of light refers to
It enables, then needs further to detect fault detector to be measured.
Referring to structural schematic diagram shown in Fig. 2, the system also includes 4G communication device, the 4G communication device is for real
Communication between the existing fault detector to be measured and the client server.
Optionally, it is attached between the control device and the voltage power output device using optical fiber；The control
It is attached between device processed and the current power output device using optical fiber.
In the embodiment of the present application, using optical fiber replace traditional cable, control device generate digital voltage signal or
Digital current signal belongs to digital signal, and digital signal is converted optical signal by the fiber optical transceiver for including in control device,
By optical fiber by the optical signal transmission to voltage power output device or current power output device, optical fiber transmission avoids control
Electromagnetic interference problem between device and voltage power output device or current power output device.
Optionally, ethernet communication is used between the control device and the standard meter apparatus 500；The user service
Ethernet communication is used between device 200 and the standard meter apparatus.
Optionally, ethernet communication is used between the client server and the 4G communication device.
Optionally, the control device includes: waveform generator, the first fiber optical transceiver and industrial personal computer.
The industrial personal computer is used to receive the pre-set status switch that the client server is sent, and by the state
Sequence is sent to waveform generator；The waveform generator is used to be obtained and the status switch phase according to the status switch
The digital waveform is converted digital voltage signal and digital current signal by corresponding digital waveform, and the number is electric
Pressure signal and digital current signal are transmitted to the first fiber optical transceiver；First fiber optical transceiver is used for the digital voltage
Signal is transmitted to the voltage power output device, and the digital current signal is transmitted to the current power output device.
In the embodiment of the present application, the waveform generator can generate 6 number character waveforms simultaneously, wherein including three roads electricity
Digital waveform and three road current digital waveforms are pressed, and 6 number character waveforms being capable of synchronism output.
Optionally, the voltage power output device includes three voltage output devices, each voltage output device
Including the second fiber optical transceiver, voltage power amplifier unit and booster.
Second fiber optical transceiver is used to receive the digital voltage signal that the control device is sent；Second optical fiber
Transceiver obtains analog voltage signal, and the analog voltage signal is sent to electricity for parsing the digital voltage signal
Press power amplifier unit；The voltage power amplifier unit is used to the analog voltage signal being sent to booster；The booster is used for
The analog voltage signal is boosted into 0-10KV, obtains first voltage signal, and the first voltage signal is transmitted respectively
To the standard meter apparatus and fault detector to be measured.
Optionally, the current power output device includes three current output devices, each current output device
Including third fiber optical transceiver and current amplification unit.
The third fiber optical transceiver is used to receive the digital current signal that the control device is sent；The third optical fiber
Transceiver obtains analog current signal, and the analog current signal is sent to electricity for parsing the digital current signal
Flow power amplifier unit；The current amplification unit is for receiving the analog current signal, using the analog current as the first electricity
Signal is flowed, and first current signal is transmitted separately to the standard meter apparatus and fault detector to be measured.
Optionally, the standard meter apparatus include: three-phase voltage sampling plate, three-phase current sampling plate, voltage transformer and
Current transformer.
The three-phase voltage sampling plate is used to sample the voltage power output by the secondary side of the voltage transformer
The first voltage signal of device output；The three-phase current sampling plate is used to sample the electricity by the secondary side of current transformer
Flow the first current signal of power output device output.
Referring to structural schematic diagram shown in Fig. 3, the application provides a kind of fault detector test macro, in the system
In, comprising: control device 100, client server 200, voltage power output device 300, current power output device 400, mark
Quasi- meter apparatus 500, network camera device 700 and 4G communication device 800.Wherein, control device 100 is used for defeated to voltage power
Device 300 transmits digital voltage signal out, transmits digital current signal to current power output device 400；Voltage power output
Device 300 is used for amplifier digital voltage signal, obtains first voltage signal；Current power output device 400 is used for amplifier digital
Current signal obtains the first current signal；Standard meter apparatus 500 is used for first that collection voltages power output device 300 exports
Voltage signal, and the first current signal that acquisition current power output device 400 exports, and by first voltage signal and first
Current signal is transmitted to client server 200；Fault detector 600 to be measured is exported for collection voltages power output device 300
First voltage signal, and the first current signal that acquisition current power output device 400 exports and makes a response；Network
Photographic device 700 is for taking pictures to fault detector 600 to be measured；4G communication device 800 is for realizing indicating fault to be measured
Communication between device 600 and the client server 200.
Control device 100 includes: waveform generator 102, the first fiber optical transceiver 103 and industrial personal computer 101；Voltage power is defeated
Device 300 includes: the second fiber optical transceiver 301, voltage power amplifier unit 302 and booster 303 out；Current power output device
400 include: third fiber optical transceiver 401 and current amplification unit 402；Standard meter apparatus 500 includes: three-phase voltage sampling plate
502, three-phase current sampling plate 504, voltage transformer 501 and current transformer 503.
Combine detailed description and exemplary example that the application is described in detail above, but these explanations are simultaneously
It should not be understood as the limitation to the application.It will be appreciated by those skilled in the art that without departing from the application spirit and scope,
A variety of equivalent substitution, modification or improvements can be carried out to technical scheme and embodiments thereof, these each fall within the application
In the range of.The protection scope of the application is determined by the appended claims.
Claims (10)
1. a kind of fault detector test macro characterized by comprising control device, client server, voltage power output
Device, current power output device and standard meter apparatus；
The digital voltage signal is transmitted to by the control device for obtaining digital voltage signal and digital current signal
The digital current signal is transmitted to the current power output device by the voltage power output device；
The voltage power output device obtains first voltage signal, and will be described for amplifying the digital voltage signal
First voltage signal is transmitted separately to the standard meter apparatus and fault detector to be measured；
The current power output device obtains the first current signal, and will be described for amplifying the digital current signal
First current signal is transmitted separately to the standard meter apparatus and fault detector to be measured；
The standard meter apparatus is used to for the first voltage signal received and first current signal being transmitted to described
Client server；
The fault detector to be measured obtains first wave for responding the first voltage signal and first current signal
Shape, and the first waveform is transmitted to the client server；
The first voltage signal and first electric current letter that the client server is used to transmit the standard meter apparatus
Number it is converted into the second waveform, whether the first waveform and second waveform are consistent；
If the first waveform is consistent with second waveform, the client server is for determining the fault detector to be measured
In normal operating condition.
2. system according to claim 1, which is characterized in that the system also includes: network camera device；
Described image is transmitted to institute for being taken pictures to obtain image to fault detector to be measured by the network camera device
State client server；
The client server is used for according to second waveform, determine the fault detector to be measured whether board turning or sudden strain of a muscle
Light, using the board turning of the fault detector to be measured determined according to the second waveform or non-flashing situations as target board turning or sudden strain of a muscle
Light situation；
The client server is used to obtain the board turning or non-flashing situations of fault detector to be measured in described image, relatively described in
Whether the board turning or non-flashing situations of fault detector to be measured and the target board turning or non-flashing situations are consistent；
If the board turning or non-flashing situations of the fault detector to be measured are consistent with the target board turning or non-flashing situations, described
Client server is for determining that the board turning of the fault detector to be measured or flash function are normal.
3. system according to claim 1, which is characterized in that the system also includes 4G communication device, the 4G communication
Device is for realizing the communication between the fault detector to be measured and the client server.
4. system according to claim 1, which is characterized in that the control device and the voltage power output device it
Between be attached using optical fiber；
It is attached between the control device and the current power output device using optical fiber.
5. system according to claim 1, which is characterized in that used between the control device and the standard meter apparatus
Ethernet communication；
Ethernet communication is used between the client server and the standard meter apparatus.
6. system according to claim 3, which is characterized in that adopted between the client server and the 4G communication device
Use ethernet communication.
7. system according to claim 1, which is characterized in that the control device includes: waveform generator, the first optical fiber
Transceiver and industrial personal computer；
The industrial personal computer is used to receive the pre-set status switch that the client server is sent, and by the status switch
It is sent to waveform generator；
The waveform generator is used to obtain digital waveform corresponding with the status switch according to the status switch, will
The digital waveform is converted into digital voltage signal and digital current signal, and the digital voltage signal and digital current are believed
Number it is transmitted to the first fiber optical transceiver；
First fiber optical transceiver is used to the digital voltage signal being transmitted to the voltage power output device, will be described
Digital current signal is transmitted to the current power output device.
8. system according to claim 1, which is characterized in that the voltage power output device includes three voltage outputs
Device, each voltage output device include the second fiber optical transceiver, voltage power amplifier unit and booster；
Second fiber optical transceiver is used to receive the digital voltage signal that the control device is sent；
Second fiber optical transceiver obtains analog voltage signal for parsing the digital voltage signal, and by the simulation
Voltage signal is sent to voltage power amplifier unit；
The voltage power amplifier unit is used to the analog voltage signal being sent to booster；
The booster is used to the analog voltage signal boosting to 0-10KV, obtains first voltage signal, and by described the
One voltage signal is transmitted separately to the standard meter apparatus and fault detector to be measured.
9. system according to claim 1, which is characterized in that the current power output device includes three electric current outputs
Device, each current output device include third fiber optical transceiver and current amplification unit；
The third fiber optical transceiver is used to receive the digital current signal that the control device is sent；
The third fiber optical transceiver obtains analog current signal for parsing the digital current signal, and by the simulation
Current signal is sent to current amplification unit；
The current amplification unit is for receiving the analog current signal, using the analog current as the first current signal,
And first current signal is transmitted separately to the standard meter apparatus and fault detector to be measured.
10. system according to claim 1, which is characterized in that the standard meter apparatus include: three-phase voltage sampling plate,
Three-phase current sampling plate, voltage transformer and current transformer；
The three-phase voltage sampling plate is used to sample the voltage power output device by the secondary side of the voltage transformer
The first voltage signal of output；
The three-phase current sampling plate is used to sample the current power output device output by the secondary side of current transformer
The first current signal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221235A (en) * | 2019-07-24 | 2019-09-10 | 云南电力技术有限责任公司 | A kind of fault detector remote test system and method |
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Application publication date: 20181211 |