CN107907791A - A kind of automatic checkout system and detection method of distribution network failure indicator - Google Patents
A kind of automatic checkout system and detection method of distribution network failure indicator Download PDFInfo
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- CN107907791A CN107907791A CN201711047485.XA CN201711047485A CN107907791A CN 107907791 A CN107907791 A CN 107907791A CN 201711047485 A CN201711047485 A CN 201711047485A CN 107907791 A CN107907791 A CN 107907791A
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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
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Abstract
The present invention relates to distribution network failure detection field, a kind of automatic checkout system and detection method of distribution network failure indicator is disclosed, to solve the technical problem that existing fault detector can not detect automatically；The present invention includes program-controlled boosting and flows up instrument, for receiving detection instruction, produces failure amount, failure amount is loaded into the circuit that fault detector detected, and failure amount is returned test main frame；Fault detector detecting platform, receive fault detector collects the electric current and fault alarm signal information of unit feedback, and information is uploaded to test main frame；Test main frame, for issuing detection instruction to program-controlled boosting up-flow instrument, it is additionally operable to receive and records the failure amount that program-controlled boosting up-flow instrument returns, program-controlled boosting is flowed up into the failure amount of instrument return after fault detector execution action and the unit feedack that collects of fault detector is contrasted, if the two unanimously if judge fault detector by detection, otherwise judge not pass through.
Description
Technical field
The present invention relates to distribution network failure detection field, more particularly to a kind of automatic detection system of distribution network failure indicator
System and detection method.
Background technology
In recent years, China carries out two-channel filter banks engineering on a large scale, and power transmission and distribution industrial economy is consequently also increasingly flourishing.Failure
Indicator can make up the deficiency of defeated power supply trouble inquiry, time saving and energy saving, be quick search trouble point, fast recovery of power supply provides
Sound assurance, significantly improves power supply reliability and reduces power worker's working strength.So the market of fault detector needs
The amount of asking increase is quickly.Fault detector only by could be after stringent calibrating maintenance personal with indicating guilty culprit,
It can recover the power supply of fault-free section in time, substantial amounts of working time reduction power off time and power failure range could be saved.At present
Also without special fault detector detection device, still using traditional manual testing, efficiency is low, and accuracy can not also ensure.
Known domestic and international open source literature, though relate to the line technology research of fault detector detection, specifically grinds without proposition
Study carefully scheme, do not make workable device, and be not related to the functions such as the many-sided detection of batch in research approach, be not also related to peace
Full property design.
The content of the invention
Present invention aims at a kind of automatic checkout system and detection method of distribution network failure indicator is provided, to solve
The technical problem that existing fault detector can not detect automatically.
To achieve the above object, the present invention provides a kind of automatic checkout system of distribution network failure indicator, including：
Program-controlled boosting up-flow instrument, for receiving the detection instruction from test main frame, produces corresponding according to the detection instruction
Failure amount, the circuit that fault detector detected is loaded into by the failure amount, and the failure amount is returned test main frame；
Fault detector detecting platform, is connected with the fault detector, for after fault detector execution action, connecing
That receives fault detector collects the electric current and fault alarm signal information of unit feedback, and described information is uploaded to the test
Host；
The test main frame, for issuing detection instruction to the program-controlled boosting up-flow instrument, is additionally operable to receive and records the journey
The failure amount that control boosting up-flow instrument returns, and return the program-controlled boosting up-flow instrument after fault detector execution action
The failure amount and the unit feedack that collects of fault detector returned are contrasted, if the two unanimously if judge that the failure refers to
Show that device by detection, otherwise judges not pass through.
Preferably, the detection instruction includes line voltage distribution signature waveform and current characteristic waveform, the test main frame bag
Power source control module and automatic detection module are included,
The power source control module, for controlling three-phase program-controlled current source to produce electric current by current source control unit, through work(
Rate amplifier is fitted to default line voltage distribution signature waveform and line current signature waveform, and by the line current characteristic wave
Shape and the line voltage distribution signature waveform are issued to the program-controlled boosting up-flow instrument；
The automatic detection module, the fault current size returned for receiving and recording the program-controlled boosting up-flow instrument, and
The fault current that the program-controlled boosting up-flow instrument returns is fed back with fault detector after fault detector execution action
Size of current contrasted, if the two unanimously if judge the fault detector by detection, otherwise judge not pass through.
Preferably, the program-controlled boosting up-flow instrument includes wideband booster and current coil, and the wideband booster receives
Line voltage distribution signature waveform from the power source control module simultaneously carries out boosting processing, and the current coil receives and comes from institute
State the line current signature waveform of power source control module and carry out up-flow processing, handled through the boosting processing and the up-flow
Fault current during line fault operating mode is formed, the fault current is loaded into the circuit that the fault detector detected,
And the fault current is returned into test main frame.
Preferably, the automatic detection module includes fault detector automatic detection unit, which examines automatically
Unit is surveyed by the way that program-controlled boosting flows up the voltage of instrument output, electric current is added on fault detector, and it is negative by fault detector collection
Charged current carries out the ratio of precision pair of current acquisition；Meanwhile realize that the fault current of fault detector is adopted by output short circuit current
The verification whether collection and collecting unit correctly act, and fault alarm signal is sent to test main frame；Automatic reporting unit, should
Unit collects the voltage and current data of program-controlled boosting up-flow instrument output, the load current and fault current number of fault detector collection
According to this and fault alarm signal data, fault indicator performance examining report is automatically generated by report template, completes failure and refer to
Show that the automatic detection and report of device automatically generate, the detection efficiency and report that can lift high-volume fault detector complete efficiency.
Preferably, the fault detector detecting platform mounts interface, the indicating fault including multiple fault detectors
Device is mounted on described to be connected when mounting in interface with the circuit and fault detector detecting platform detected.
Preferably, the maximum output current of the program-controlled boosting up-flow instrument is 1kA, the maximum of the program-controlled boosting up-flow instrument
Output voltage is 5.77kV.
The technical concept total as one, present invention also offers it is a kind of with distribution network failure indicator described above from
Dynamic detecting system carries out the automatic testing method of distribution network failure indicator, comprises the following steps：
S2：Fault detector is mounted on fault detector detecting platform, makes itself and the circuit detected and the failure
Indicator detecting platform connects；
S3：Failure on the circuit detected by program-controlled boosting up-flow instrument to the fault detector during loading simulation fault condition
Amount；
S4：The indicator of feedback is gathered into current data during the fault detector execution action and whether indicating member acts
Information contrasted with the failure amount, if the two unanimously if judge the fault detector by detection, otherwise judge not
Pass through.
Preferably, before step S2 is carried out, the method further includes：
S1：Batch management：
When distribution line failure indicator mass detects, advanced column indicator information management is needed, it is main to include creating batch, add
Add fault detector basis account information, this part is mainly the management for information, is done for the detection of next step fault detector
Prepare, after the account maintenance of information completion of equipment, mounting for equipment is carried out on request, into detection；
After the step S4, the method further includes：
S5：The batch of the fault detector by detection and address are recorded and form form.
Preferably, the method further includes：
S6：Anti-error dynamic test：
Fault detector requires the function of effective anti-load current fluctuation false alarm prevention and automatic dodging inrush phenomenon,
Specifically test procedure is：
1）Load fluctuation false alarm prevention is tested：When fault current actuation of an alarm value of the curent change in circuit more than setting, and
Load level before falling to curent change again after more than defined action delay, fault detector do not answer malfunction；
2）Transformer no-load switchon surge false alarm prevention is tested：When current value is mutated from zero and more than the failure electricity of setting in circuit
Actuation of an alarm value is flowed, and when falling to zero again after more than defined action delay, fault detector does not answer malfunction；
3）Circuit is projecting to load false alarm prevention experiment of shoving：When the current value in circuit exceedes the fault current actuation of an alarm of setting
Value, and when falling to normal duty level after more than defined action delay again, fault detector does not answer malfunction；
4）The artificial big load false alarm prevention experiment of switching：When the current value change in circuit is dynamic more than the fault current alarm of setting
Work value, and when falling to zero again after more than defined most long action delay, fault detector does not answer malfunction；
5）Non-faulting coincide lock shove false alarm prevention experiment：Fault location terminal is accessed in analog loopback and applied normal negative
Charged current, after power failure 0.5s, the current value in circuit is mutated from zero and more than the fault current actuation of an alarm value of setting, and big
When falling to zero again after defined action delay, fault detector does not answer malfunction.
The invention has the advantages that：
1st, the automatic checkout system of distribution network failure indicator of the invention, by simulating various lines voltage and current environment, is surveyed
The fault detect effect of tracer is tried, can realize the automatic detection of fault detector；And test main frame energy while and journey
Control boosting up-flow instrument, detection platform progress bidirectional data interaction realize automated closed-loop test, can significantly improve fault detector
Detection and maintenance speed, improve equipment availability, reduce equipment and electric quantity loss, increase customer satisfaction degree, reduce it is artificial because
Element, improves the professional level that equipment uses and power distribution network is safeguarded.
2nd, in a preferred approach, the automatic checkout system of distribution network failure indicator of the invention, can analyze indicating fault
Device operating status, including whether the precision of fault detector collection normal duty electric current, fault detector correctly act and event
Hinder faulty action preventing function etc. of indicator, transfer dependence test as a result, whether correct to, fault actions including current acquisition ratio of precision
And put whether malfunction function is normal etc., possess and the fault detector of mass is carried out while detected, and according to default inspection
Survey project carries out flowing water detection, finally automatically generates test report according to default template, detection efficiency and report can be greatly improved
Accuse and complete efficiency.
3rd, the automatic testing method of distribution network failure indicator of the invention is, it can be achieved that the batch of fault detector, multi-party
The detection in face, analog line voltage and current input, analysis voltage current acquisition precision, fault detector whether can correctly act with
And whether possessing the test results such as false action-proof function, intelligent decision failure is easy to use.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to accompanying drawings, the present invention is described in further detail.
Brief description of the drawings
The attached drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its explanation is used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structure diagram of the automatic checkout system of the distribution network failure indicator of the preferred embodiment of the present invention；
Fig. 2 is the fault detector automatic checkout system testing process of the preferred embodiment of the present invention；
Fig. 3 is the fault simulating test and faulty action preventing pilot project testing process of the preferred embodiment of the present invention.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
Referring to Fig. 1, the automatic checkout system of distribution network failure indicator of the invention, including program-controlled boosting up-flow instrument, event
Hinder indicator detecting platform and test main frame.Program-controlled boosting up-flow instrument, for receiving the detection instruction from test main frame, according to
Detection instruction produces corresponding failure amount, failure amount is loaded into the circuit that fault detector detected, and failure amount is returned
Test main frame；Fault detector detecting platform, is connected with fault detector, for after fault detector execution action, receiving
The information such as the electric current for collecting unit feedback of fault detector and fault alarm signal, and information is uploaded to test main frame；Need
It is noted that when fault detector detects line fault, test main website is sent on collection fault current, fault alarm signal,
Failure board turning and flashing light are carried out by collecting unit executing agency at the same time, for convenient live line walking, search accurate trouble point.
This test system by installing camera near collecting unit, to monitor collecting unit whether precision maneuver,
For example, board turning, flash of light.Test main frame is used to issue detection instruction to program-controlled boosting up-flow instrument, is additionally operable to receive and records program-controlled
Boosting flows up the failure amount that instrument returns, and program-controlled boosting is flowed up to the failure amount of instrument return after fault detector execution action
With fault detector collection failure amount contrasted, if the two unanimously if judge fault detector by detection, otherwise judge
Do not pass through.For system by simulating various lines voltage and current environment, the fault detect effect of test failure detector, can realize event
Hinder the automatic detection of indicator；And test main frame can flow up instrument with program-controlled boosting at the same time, detection platform carries out bi-directional data friendship
Mutually realize automated closed-loop test.Detection and the maintenance speed of fault detector can be significantly improved, equipment availability is improved, reduces
Equipment and electric quantity loss, increase customer satisfaction degree, and reduce human factor, improve the specialized water that equipment uses and power distribution network is safeguarded
It is flat.
In the present embodiment, detection instruction includes line voltage distribution signature waveform and current characteristic waveform, and test main frame includes work(
Rate source control module and automatic detection module, power source control module, for controlling program-controlled boosting by current source control unit
Flow up instrument and produce electric current, default line voltage distribution signature waveform and line current signature waveform are fitted to through power amplifier, and
Line current signature waveform and line voltage distribution signature waveform are issued to program-controlled boosting up-flow instrument；Automatic detection module, for connecing
The failure amount that program-controlled boosting up-flow instrument returns is received and recorded, and program-controlled boosting is flowed up into instrument after fault detector execution action
The failure amount that the failure amount of return is gathered with fault detector is contrasted, if the two unanimously if judge fault detector pass through inspection
Survey, otherwise judge not pass through.
In the present embodiment, program-controlled boosting up-flow instrument includes wideband booster and current coil, and wideband booster is received and come from
The line voltage distribution signature waveform of power source control module simultaneously carries out boosting processing, and current coil receives and comes from power source control module
Line current signature waveform and carry out up-flow processing, it is boosted processing and up-flow processing formed line fault operating mode when failure
Amount, the circuit that fault detector detected is loaded into by failure amount, and failure amount is returned test main frame.Program-controlled boosting up-flow instrument
Maximum output current be 1kA, it is program-controlled boosting up-flow instrument maximum output voltage be 5.77kV, manufactured using aluminium section bar, with non-
Permeability magnetic material makees skeleton, is convenient to suspension detection.
In the present embodiment, automatic detection module includes fault detector automatic detection unit, automatic reporting unit.
In the present embodiment, fault detector detecting platform mounts interface including multiple fault detectors, and fault detector is hung
Connected mounted in when mounting in interface with the circuit and fault detector detecting platform detected.In the present embodiment, indicating fault
Device detecting platform is made of the pressure-resistant coil of high current, which possesses 60 and mount interface, can meet to examine and determine 60 failures at the same time
Indicator collecting unit（Calculated with every set of fault indicator containing 3 collecting units, 20 set of fault indicators can be detected at the same time）'s
It is required that.
Referring to Fig. 2, the automatic checkout system of the invention with above-mentioned distribution network failure indicator carries out distribution network failure
The automatic testing method of indicator, comprises the following steps：
S2：Fault detector is mounted on fault detector detecting platform, makes itself and the circuit and indicating fault that are detected
Device detecting platform connects；
S3：Failure amount on the circuit detected by program-controlled boosting up-flow instrument to fault detector during loading simulation fault condition；
S4：If fault detector execution is contrasted feedack and failure amount when acting, if the two unanimously judges event
Hinder indicator by detection, otherwise judge not pass through.
Referring to Fig. 3, in practical applications, on the basis of above-mentioned steps, distribution network failure indicator of the invention from
Dynamic detection method can also increase following steps and optimize：
S1：Batch management；
S2：Fault detector is mounted on fault detector detecting platform, makes itself and the circuit and indicating fault that are detected
Device detecting platform connects；
S3：Failure amount on the circuit detected by program-controlled boosting up-flow instrument to fault detector during loading simulation fault condition；
S4：If fault detector execution is contrasted feedack and failure amount when acting, if the two unanimously judges event
Hinder indicator by detection, otherwise judge not pass through；
S5：It will be recorded by the batch and address of the fault detector of detection and form form；
S6：Anti-error dynamic test.
It is detected by automatic checkout system and is contrasted with artificial detection, 1 when single detection limit is by artificial detection
The ability improved to 20 set of fault indicators of detection are provided simultaneously with is covered, test report is provided automatically after the completion of system detectio, can save
Less manpower write report time 2 it is small when/part, efficiency is provided in significant increase detection efficiency and report.
In summary, the present invention can be detected overhead type fault detector and cable-type fault detector, carry out event
Hinder the experiment of indicator collection circuit function of current, short trouble alarm and reset function experiment, earth fault alarm and reset work(
Can experiment, full-automatic parameter setting and verification（It can be realized by detecting system multiple to fault detector fault current definite value, action
Return delay time, put the reading and verification of the parameters such as malfunction action definite value）, the multinomial detection such as short trouble faulty action preventing function test
Function.With it is powerful, using it is simple, stable, easy to maintain, acquisition precision is high, reliability is high, memory capacity is big,
The characteristics of open good, cost-effective.The system has good promotional value and economic benefit, can improve fault detector
Detection and maintenance speed, improve equipment availability, reduce equipment and electric quantity loss, increase customer satisfaction degree, reduce it is artificial because
Element, improves the professional level that equipment uses and power distribution network is safeguarded.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
- A kind of 1. automatic checkout system of distribution network failure indicator, it is characterised in that including：Program-controlled boosting up-flow instrument, for receiving the detection instruction from test main frame, produces corresponding according to the detection instruction Failure amount, the circuit that fault detector detected is loaded into by the failure amount, and the failure amount is returned the test and is led Machine；Fault detector detecting platform, is connected with the fault detector, for after fault detector execution action, connecing That receives fault detector collects the electric current and fault alarm signal information of unit feedback, and described information is uploaded to the test Host；The test main frame, for issuing detection instruction to the program-controlled boosting up-flow instrument, is additionally operable to receive and records the journey The failure amount that control boosting up-flow instrument returns, and return the program-controlled boosting up-flow instrument after fault detector execution action The failure amount and the unit feedack that collects of fault detector returned are contrasted, if the two unanimously if judge that the failure refers to Show that device by detection, otherwise judges not pass through.
- 2. automatic checkout system according to claim 1, it is characterised in that the detection instruction includes line voltage distribution feature Waveform and current characteristic waveform, the test main frame include power source control module and automatic detection module；The power source control module, for controlling three-phase program-controlled current source to produce electric current by current source control unit, through work( Rate amplifier is fitted to default line voltage distribution signature waveform and line current signature waveform, and by the line current characteristic wave Shape and the line voltage distribution signature waveform are issued to the program-controlled boosting up-flow instrument；The automatic detection module, the fault current size returned for receiving and recording the program-controlled boosting up-flow instrument, and The fault current that the program-controlled boosting up-flow instrument returns is fed back with fault detector after fault detector execution action Size of current contrasted, if the two unanimously if judge the fault detector by detection, otherwise judge not pass through.
- 3. automatic checkout system according to claim 2, it is characterised in that the program-controlled boosting up-flow instrument includes wideband liter Depressor and current coil, the wideband booster receive the line voltage distribution signature waveform from the power source control module and go forward side by side Row boosting is handled, and the current coil receives the line current signature waveform from the power source control module and flowed up Processing, forms fault current during line fault operating mode through the boosting processing and the up-flow processing, by the fault current The circuit that the fault detector is detected is loaded into, and the fault current is returned into test main frame.
- 4. automatic checkout system according to claim 2, it is characterised in that the automatic detection module includes indicating fault Device automatic detection unit, the fault detector automatic detection unit is by the way that program-controlled boosting flows up the voltage of instrument output, electric current is added to On fault detector, and by the ratio of precision pair of fault detector collection load current progress current acquisition；It is meanwhile short by exporting Road electric current realizes the fault current collection of fault detector and the verification whether collecting unit correctly acts, and fault warning is believed Number it is sent to test main frame；Automatic reporting unit, the unit collect voltage and current data, the failure of program-controlled boosting up-flow instrument output The load current and fault current data and fault alarm signal data of indicator collection, event is automatically generated by report template Hinder the report of indicator performance detection, the automatic detection and report for completing fault detector automatically generate.
- 5. automatic checkout system according to any one of claim 1 to 4, it is characterised in that the fault detector inspection Fixed platform mounts interface including multiple fault detectors, the fault detector be mounted on it is described when mounting in interface with being detected Circuit and fault detector detecting platform connection.
- 6. automatic checkout system according to any one of claim 1 to 4, it is characterised in that the program-controlled boosting up-flow The maximum output current of instrument is 1kA, and the maximum output voltage of the program-controlled boosting up-flow instrument is 5.77kV.
- 7. a kind of automatic checkout system progress distribution network failure indicator being used for as any one of claim 1 to 6 Automatic testing method, it is characterised in that comprise the following steps：S2：Fault detector is mounted on fault detector detecting platform, makes itself and the circuit detected and the failure Indicator detecting platform connects；S3：Failure on the circuit detected by program-controlled boosting up-flow instrument to the fault detector during loading simulation fault condition Amount；S4：The indicator of feedback is gathered into current data during the fault detector execution action and whether indicating member acts Information contrasted with the failure amount, if the two unanimously if judge the fault detector by detection, otherwise judge not Pass through.
- 8. automatic testing method according to claim 7, it is characterised in that before step S2 is carried out, the method is also Including：S1：Batch management：When distribution line failure indicator mass detects, advanced column indicator information management is needed, it is main to include creating batch, add Add fault detector basis account information, this part is mainly the management for information, is done for the detection of next step fault detector Prepare, after the account maintenance of information completion of equipment, mounting for equipment is carried out on request, into detection；After the step S4, the method further includes：S5：The batch of the fault detector by detection and address are recorded and form form.
- 9. automatic testing method according to claim 8, it is characterised in that the method further includes：S6：Anti-error dynamic test：Fault detector requires the function of effective anti-load current fluctuation false alarm prevention and automatic dodging inrush phenomenon, Specifically test procedure is：1）Load fluctuation false alarm prevention is tested：When fault current actuation of an alarm value of the curent change in circuit more than setting, and Load level before falling to curent change again after more than defined action delay, fault detector do not answer malfunction；2）Transformer no-load switchon surge false alarm prevention is tested：When current value is mutated from zero and more than the failure electricity of setting in circuit Actuation of an alarm value is flowed, and when falling to zero again after more than defined action delay, fault detector does not answer malfunction；3）Circuit is projecting to load false alarm prevention experiment of shoving：When the current value in circuit exceedes the fault current actuation of an alarm of setting Value, and when falling to normal duty level after more than defined action delay again, fault detector does not answer malfunction；4）The artificial big load false alarm prevention experiment of switching：When the current value change in circuit is dynamic more than the fault current alarm of setting Work value, and when falling to zero again after more than defined most long action delay, fault detector does not answer malfunction；5）Non-faulting coincide lock shove false alarm prevention experiment：Fault location terminal is accessed in analog loopback and applied normal negative Charged current, after power failure 0.5s, the current value in circuit is mutated from zero and more than the fault current actuation of an alarm value of setting, and big When falling to zero again after defined action delay, fault detector does not answer malfunction.
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| CN108983139A (en) * | 2018-08-28 | 2018-12-11 | 云南电网有限责任公司电力科学研究院 | A kind of fault detector test macro |
| CN109459714A (en) * | 2018-10-09 | 2019-03-12 | 国网湖南省电力有限公司 | A kind of fault detector electromagnetism compatibility testing device, test method and system |
| CN109459714B (en) * | 2018-10-09 | 2021-06-08 | 国网湖南省电力有限公司 | Electromagnetic compatibility testing equipment, testing method and system for fault indicator |
| CN109490805A (en) * | 2018-10-15 | 2019-03-19 | 国网河北省电力有限公司石家庄供电分公司 | A kind of portable fault detector detection device |
| CN109444784A (en) * | 2018-11-12 | 2019-03-08 | 威胜信息技术股份有限公司 | The quick correction method of fault detector |
| CN110596631A (en) * | 2018-12-05 | 2019-12-20 | 许昌开普检测研究院股份有限公司 | Fault indicator batch detection platform and suspension line thereof |
| CN110018397A (en) * | 2019-05-13 | 2019-07-16 | 江苏金智科技股份有限公司 | A kind of fault detector acquisition unit hangs and takes device automatically |
| CN110018397B (en) * | 2019-05-13 | 2021-07-09 | 国网江苏省电力有限公司电力科学研究院 | Automatic hanging device for fault indicator acquisition unit |
| CN110208727A (en) * | 2019-07-12 | 2019-09-06 | 上海金智晟东电力科技有限公司 | Processing method, processing unit and the system of fault detector precision checking test |
| CN110865276A (en) * | 2019-11-21 | 2020-03-06 | 南京能云电力科技有限公司 | Fault indicator parallel detection system and detection method |
| CN113009283A (en) * | 2021-03-25 | 2021-06-22 | 贵州电网有限责任公司 | Power distribution network fault indicator test system |
| CN113945800A (en) * | 2021-10-18 | 2022-01-18 | 国网河北省电力有限公司电力科学研究院 | Power distribution network short-circuit fault area positioning method and device, terminal and storage medium |
| CN113945800B (en) * | 2021-10-18 | 2024-08-13 | 国网河北省电力有限公司电力科学研究院 | Power distribution network short-circuit fault area positioning method, device, terminal and storage medium |
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