CN106908694A - A kind of distribution line failure indicator and its detection method based on IEC61850 - Google Patents
A kind of distribution line failure indicator and its detection method based on IEC61850 Download PDFInfo
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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
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
A kind of distribution line failure indicator based on IEC61850, it is characterized in, it is respectively provided with each phase of built on stilts three-phase line and is connected with fault detector, three fault detectors set up communication connection using 6LoWPAN agreement MANET modes, the fault detector of B, C two-phase connection using Real-time Collection to current information and breakdown judge message be sent to the fault detector of A phase lines connection as fault comprehensive criterion；The fault detector of A phase lines connection is built-in with Big Dipper RDSS communication modules; short message can be forwarded to the system main website in transformer station with Beidou satellite system; fault message is organized into IEC61850 standard Goose messages to be sent in substation network; simultaneity factor main website has the function of monitoring intelligent grid relay protection action message message; extraction and analysis message content simultaneously coordinates the information that all fault detectors are beamed back on line related, judges fault section.And its detection method is provided.
Description
Technical field
The invention belongs to system for distribution network of power relay protection field, and in particular to a kind of distribution wire based on IEC61850
Line fault indicator and its detection method.
Background technology
The probability broken down in 6~66kV power distribution networks of China is of a relatively high, and obtains largely should in recent years at the scene
Fault detector can allow operations staff quickly to search the location of faults such as power distribution network short circuit, ground connection, improve power supply reliable
Property.At present, Some Domestic producer is proposed the fault detector with communication function, and operations staff can be further greatly decreased
Workload.This kind of built-in short-distance wireless communication module of fault detector, is communicated with communication terminal special, and communication terminal connection is moved
Dynamic internet, main website is uploaded by fault message.Communication terminal is powered using battery or solar panels, is referred to installed in distance fault
Show the nearer position of device（As on tower bar）.The problem that existing this class fault detector is present is：Itself there is no remote nothing
Line communication function by communication terminal, it is necessary to be transmitted to main website；The power supply storage battery of communication terminal is difficult in maintenance, solar panels peace
Fill cumbersome and influenceed greatly by dust and rainy weather；Communication terminal outdoor tower bar installment work intensity is big and in rain-proof dust-proof vibrationproof
The requirement of the aspects such as lightning protection is high；Communication terminal uses public network, is unfavorable for the Network Communicate Security of power network；Indicating fault
Device, communication terminal, system main website establish one's own system, and are free on outside power system, are unfavorable for the construction of intelligent grid.Therefore, it is existing
Pattern manufacturing cost, installation cost, maintenance in the application of power industry of this class " fault detector+communication terminal " having
Cost is all higher.
The content of the invention
In order to solve the deficiencies in the prior art, rational in infrastructure it is an object of the present invention to provide one kind, practical function is good, into
This low, easy to use distribution line failure indicator based on IEC61850, and its detection method is provided,
Realizing the technical scheme that the object of the invention is used is, a kind of distribution line failure based on IEC61850 that the present invention is provided
Indicator, is characterized in that it is included in each distribution substation and is provided with a system main website, is connected with transformer station three-phase line
The stage casing of the three-phase long transmission line for connecing and some groups of three-phase line component inlets be equipped with and with three-phase long transmission line, some groups three
The fault detector of phase line magnetic connects, each fault detector of three-phase long transmission line connection, each connected per three-phase line
Fault detector is connected with Beidou satellite system and handheld communication devices signal；Each indicating fault of three-phase long transmission line connection
6LoWPAN protocol communications are used between device, 6LoWPAN protocol communications are used between the fault detector of connection per three-phase line,
Wherein, the fault detector of three-phase long transmission line B phases long transmission line connection, the fault detector of C phases long transmission line connection pass data
The fault detector of A phases long transmission line connection is given, the built-in Big Dipper RDSS communication modules of the fault detector that A phases long transmission line is connected
Signal is used to the system main website in transformer station via Beidou satellite system forwarding short message after being processed through the examination of system main website
IEC61850 communication protocols are sent to power communication net；Fault detector, C phase lines that B phase lines per three-phase line are connected
The fault detector of connection transfers data to the fault detector of A phase lines connection, the indicating fault of A phase lines connection
Signal is forwarded short message to the system main website in transformer station by the built-in Big Dipper RDSS communication modules of device via Beidou satellite system,
After being processed through the examination of system main website power communication net is sent to IEC61850 communication protocols；System main website can use built-in
Big Dipper RDSS communication modules actively send short message data by Beidou satellite system to all of fault detector；Handheld communication
Equipment is communicated with fault detector nearby using 6LoWPAN agreements, arrange parameter, reads data.
A kind of detection method of distribution line failure indicator based on IEC61850 that the present invention is provided, including following step
Suddenly：
1）The S1 stages of system initialization：System main website is installed in transformer station, upper electricity operation, then connected with powerline network
It is logical, it is the running parameter of settable system main website with any computer：Each three-phase line title, Beidou communication terminal address, each three
Phase line running current threshold value, each three-phase line normal work zero-sequence current threshold value, then, with transformer station's three-phase line
The stage casing of the three-phase long transmission line of connection and some groups of three-phase line branch inlets are in each three-phase line exit of transformer station, three-phase
The stage casing of long transmission line, three-phase line component inlet be equipped with and with the fault detector of respective three-phase line magnetic connects, often pacify
A fault detector is installed, it is necessary to set its parameter with handheld communication devices：The working line title of three-phase line, work phase
The Beidou communication terminal address of title, system main website, after the A phase lines of setting three-phase line are finished, reads three-phase current, zero sequence
Electric current, with system master station communication state, sees whether this group of fault indicator is normal, and whole fault detectors are installed simultaneously
After normal work, into the S2 stages；
2）Process the S2 stages of remote measurement remote regulating information：System main website is connect using IEC61850 agreements and arbitrary network terminal communication
By remote measurement remote regulating request of data, if any remote measurement request, then by the finger on the given line of Beidou satellite system and three-phase line
Determine fault detector communication, extract the information such as each current data, working condition under synchronised clock and return to requesting party, if any distant
Request is adjusted, then by specified its running parameter of fault detector communications setting on Beidou satellite system and given line, is entered
The S3 stages；
3）The S3 stages of processing terminal heartbeat message：The minimum interval that system main website every group of fault detector of reception sends 10 seconds,
The interval heartbeat message message of 60 seconds most long, fault detector needs this group of three-phase line of report to connect respectively in heartbeat message
Three fault detectors between whether communicate normal, whether zero-sequence current normal, and system main website this group of failure of comprehensive descision refers to
Whether show device in normal operating conditions, if there is a problem it will send terminal fault message to network, wait the network terminal to look into
Inquiry is processed, into the S4 stages；
4）Whether S4 stage that relay protection act message is received：Power telecom network is monitored on backstage all the time after working on power by system main website
Goose messages in network, recognize type of message in this stage, if receiving short trouble message, the reclosing of line related
Failure message or system single-phase earthing message, then into the S5 stages, otherwise return to the S2 stages；
5）It is the S5 stages of phase fault：In this stage, if the failure that is listened to from power telecom network of system main website
Type is phase fault, then extract line name parameter, accident and the moment occurs, and is then pacified from substation line exit
The fault detector of dress starts, by installation site from closely to remote order, by Beidou satellite system to the failure on the circuit
Indicator group asks accident that the data of each 5 cycles before and after the moment occur successively, if the three-phase current data of upper one group of passback
Increase is mutated after the accident moment, the next group of three-phase current data of passback are mutated reduction after the accident moment, then judge this
Section between two groups of fault detectors is exactly fault section, and fault section message is sent to network, and by Three-Part protocol
Service provider sends short message and reminds to the mobile phone for setting, and network terminal query processing is waited, into the S6 stages；
6）It is the S6 stages of singlephase earth fault：If the fault type that system main website is listened to from power telecom network is single-phase connecing
Earth fault, then send out request zero-sequence current number by Beidou satellite system to the fault detector group on all line relateds immediately
According to message, in the data for returning, by line name by fault detector zero-sequence current data packet inspection, become according to distance
From closely to remote sequential search, if larger with a upper zero-sequence current in group, and next zero-sequence current is smaller, then sentence in power station
The section between two groups of fault detectors that breaks is exactly fault section, and fault section message is sent to network, and by the 3rd
Square Communications service business sends short message and reminds to the mobile phone for setting, and waits network terminal query processing, returns to the S2 stages.
The distribution line failure indicator based on IEC61850 and its advantage of detection method that the present invention is provided are embodied in：
1）Linked with big-dipper satellite, realize round-the-clock, accessible real-time Communication for Power；
2）Using IEC61850 communication protocols, it is seamlessly connected with intelligent grid；
3）Ensure without tripping, without malfunction；
4）Do not have a power failure installation, debugging, without providing power supply；
5）SMS can be sent to assigned work personnel, it is indicated that fault section；
6）It is particularly well-suited to meagrely-populated, the area that public radio communication net can not be covered uses；
7）Rational in infrastructure, practical function is good, and low cost is easy to use.
Brief description of the drawings
The distribution line failure indicator structure schematic diagram based on IEC61850 that Fig. 1 is provided for the present invention；
The distribution line failure pointer detection method flow diagram based on IEC61850 that Fig. 2 is provided for the present invention.
Specific embodiment
The distribution line failure based on IEC61850 that the present invention is provided is indicated with specific embodiment below in conjunction with the accompanying drawings
Device and its detection method are described in detail.
As shown in figure 1, the distribution line failure indicator based on IEC61850 that the present invention is provided, is included in each distribution
One system main website 1 is installed, in the stage casing of the three-phase long transmission line being connected with transformer station three-phase line and some groups in transformer station
Three-phase line component inlet be equipped with and with three-phase long transmission line, the fault detector 2 of some groups of three-phase line magnetic connects, three
Each fault detector 2 of phase long transmission line connection, per three-phase line connection each fault detector 2 and Beidou satellite system
3 and the signal of handheld communication devices 4 connection；It is logical using 6LoWPAN agreements between each fault detector 2 of three-phase long transmission line connection
Letter, 6LoWPAN protocol communications are used per three-phase line between the fault detector 2 of connection, wherein, three-phase long transmission line B phases line long
The fault detector 2 of road connection, the fault detector 2 of C phases long transmission line connection transfer data to the event of A phases long transmission line connection
Hinder indicator 2, the built-in Big Dipper RDSS communication modules of the fault detector 2 that A phases long transmission line is connected are by signal via big-dipper satellite
System 3 forwards short message to the system main website 1 in transformer station, and IEC61850 communication protocols are used after being processed through the examination of system main website 1
It is sent to power communication net；Fault detector 2, the fault detector of C phase lines connection that B phase lines per three-phase line are connected
2 transfer data to the fault detectors 2 that A phase lines are connected, the built-in Big Dipper of the fault detector 2 that A phase lines are connected
Signal is forwarded short message to the system main website 1 in transformer station by RDSS communication modules via Beidou satellite system 3, through system main website
After 1 examination treatment power communication net is sent to IEC61850 communication protocols；System main website 1 can use built-in Big Dipper RDSS
Communication module sends short message data by the active of Beidou satellite system 3 to all of fault detector 2；Handheld communication devices 4
Communicated with fault detector 2 nearby using 6LoWPAN agreements, arrange parameter reads data.It is described i.e.：Described transformer station
Three-phase line, some groups of three-phase lines refer to A phase lines, B phase lines and C phase lines；It is long that three-phase long transmission line refers to A phases
Circuit, B phases long transmission line and C phase long transmission lines.
The detection method of the distribution line failure indicator based on IEC61850 that the present invention is provided, comprises the following steps：
1）The S1 stages of system initialization：System main website is installed in transformer station, upper electricity operation, then connected with powerline network
It is logical, it is the running parameter of settable system main website with any computer：Each three-phase line title, Beidou communication terminal address, each three
Phase line running current threshold value, each three-phase line normal work zero-sequence current threshold value, then, with transformer station's three-phase line
The stage casing of the three-phase long transmission line of connection and some groups of three-phase line branch inlets are in each three-phase line exit of transformer station, three-phase
The stage casing of long transmission line, three-phase line component inlet be equipped with and with the fault detector of respective three-phase line magnetic connects, often pacify
A fault detector is installed, it is necessary to set its parameter with handheld communication devices：The working line title of three-phase line, work phase
The Beidou communication terminal address of title, system main website, after the A phase lines of setting three-phase line are finished, reads three-phase current, zero sequence
Electric current, with system master station communication state, sees whether this group of fault indicator is normal, and whole fault detectors are installed simultaneously
After normal work, into the S2 stages；
2）Process the S2 stages of remote measurement remote regulating information：System main website is connect using IEC61850 agreements and arbitrary network terminal communication
By remote measurement remote regulating request of data, if any remote measurement request, then by the finger on the given line of Beidou satellite system and three-phase line
Determine fault detector communication, extract the information such as each current data, working condition under synchronised clock and return to requesting party, if any distant
Request is adjusted, then by specified its running parameter of fault detector communications setting on Beidou satellite system and given line, is entered
The S3 stages；
3）The S3 stages of processing terminal heartbeat message：The minimum interval that system main website every group of fault detector of reception sends 10 seconds,
The interval heartbeat message message of 60 seconds most long, fault detector needs this group of three-phase line of report to connect respectively in heartbeat message
Three fault detectors between whether communicate normal, whether zero-sequence current normal, and system main website this group of failure of comprehensive descision refers to
Whether show device in normal operating conditions, if there is a problem it will send terminal fault message to network, wait the network terminal to look into
Inquiry is processed, into the S4 stages；
4）Whether S4 stage that relay protection act message is received：Power telecom network is monitored on backstage all the time after working on power by system main website
Goose messages in network, recognize type of message in this stage, if receiving short trouble message, the reclosing of line related
Failure message or system single-phase earthing message, then into the S5 stages, otherwise return to the S2 stages；
5）It is the S5 stages of phase fault：In this stage, if the failure that is listened to from power telecom network of system main website
Type is phase fault, then extract line name parameter, accident and the moment occurs, and is then pacified from substation line exit
The fault detector of dress starts, by installation site from closely to remote order, by Beidou satellite system to the failure on the circuit
Indicator group asks accident that the data of each 5 cycles before and after the moment occur successively, if the three-phase current data of upper one group of passback
Increase is mutated after the accident moment, the next group of three-phase current data of passback are mutated reduction after the accident moment, then judge this
Section between two groups of fault detectors is exactly fault section, and fault section message is sent to network, and by Three-Part protocol
Service provider sends short message and reminds to the mobile phone for setting, and network terminal query processing is waited, into the S6 stages；
6）It is the S6 stages of singlephase earth fault：If the fault type that system main website is listened to from power telecom network is single-phase connecing
Earth fault, then send out request zero-sequence current number by Beidou satellite system to the fault detector group on all line relateds immediately
According to message, in the data for returning, by line name by fault detector zero-sequence current data packet inspection, become according to distance
From closely to remote sequential search, if larger with a upper zero-sequence current in group, and next zero-sequence current is smaller, then sentence in power station
The section between two groups of fault detectors that breaks is exactly fault section, and fault section message is sent to network, and by the 3rd
Square Communications service business sends short message and reminds to the mobile phone for setting, and waits network terminal query processing, returns to the S2 stages.
The distribution line failure indicator based on IEC61850 that the present invention is provided, it includes triplets, three-phase line
A phase lines, it is each on B phase lines and C phase lines install one, three fault detectors 2 using low-power consumption 6LoWPAN agreements
MANET mode sets up communication connection.The current information that B phase lines, the fault detector 2 of C phase lines connection arrive Real-time Collection
And breakdown judge message is sent to the fault detector 2 of A phase lines connection, the fault detector 2 of A phase lines connection is built-in
6LoWPAN IP Edge routers, using after whole three-phase information gatherings as fault comprehensive criterion.The failure of A phase lines connection
Indicator 2 is also built-in with Big Dipper RDSS communication modules, can forward short message in transformer station with Beidou satellite system
System main website 1, need not so be designed for connect wireless public network communication terminal.Overhead type fault detector 2 of the invention
Using itself measurement direct power taking of CT, inside is provided with super capacitor and ensures the continuity that equipment is powered, it is not necessary to externally fed
Power supply, powered installation does not have any binding post, it is not necessary to lay communication cable, it is not necessary to the data acquisition unit installed on post
Or communication terminal.System main website 1 by built-in Big Dipper RDSS communication modules receive and dispatch failure on relevant distribution line refer to
Show the short message of device 2, the Goose messages that necessary information is organized into IEC61850 standards are sent in substation network, notify fortune
Administrative staff and daemon software.System main website 1 has the function of receiving intelligent grid relay protection action message message simultaneously, extracts
Analysis message content simultaneously coordinates the information that all fault detectors 2 are beamed back on line related, judges fault section.
Claims (2)
1. a kind of distribution line failure indicator based on IEC61850, is characterized in that it is included in peace in each distribution substation
Equipped with a system main website, in the stage casing of the three-phase long transmission line being connected with transformer station three-phase line and some groups of three-phase line branches
Porch be equipped with and with three-phase long transmission line, the fault detector of some groups of three-phase line magnetic connects, the connection of three-phase long transmission line
Each fault detector, each fault detector connected per three-phase line are believed with Beidou satellite system and handheld communication devices
Number connection；6LoWPAN protocol communications are used between each fault detector of three-phase long transmission line connection, the connection per three-phase line
6LoWPAN protocol communications are used between fault detector, wherein, fault detector, the C of the connection of three-phase long transmission line B phases long transmission line
The fault detector of phase long transmission line connection transfers data to the fault detector of A phases long transmission line connection, the connection of A phases long transmission line
The fault detector built-in Big Dipper RDSS communication modules signal is forwarded into short message in transformer station via Beidou satellite system
System main website, be sent to power communication net with IEC61850 communication protocols after being processed through system main website examination；Per three-phase line
B phase lines connection fault detector, C phase lines connection fault detector transfer data to A phase lines connection
Fault detector, the built-in Big Dipper RDSS communication modules of fault detector of A phase lines connection are by signal via big-dipper satellite system
System forwarding short message is sent to after being processed through the examination of system main website to the system main website in transformer station with IEC61850 communication protocols
Power communication net；System main website can use built-in Big Dipper RDSS communication modules by Beidou satellite system actively to all of
Fault detector sends short message data；Handheld communication devices are communicated with fault detector nearby using 6LoWPAN agreements, are set
Parameter, reads data.
2. a kind of detection method of the distribution line failure indicator based on IEC61850, comprises the following steps：
1）The S1 stages of system initialization：System main website is installed in transformer station, upper electricity operation, then connected with powerline network
It is logical, it is the running parameter of settable system main website with any computer：Each three-phase line title, Beidou communication terminal address, each three
Phase line running current threshold value, each three-phase line normal work zero-sequence current threshold value, then, with transformer station's three-phase line
The stage casing of the three-phase long transmission line of connection and some groups of three-phase line branch inlets are in each three-phase line exit of transformer station, three-phase
The stage casing of long transmission line, three-phase line component inlet be equipped with and with the fault detector of respective three-phase line magnetic connects, often pacify
A fault detector is installed, it is necessary to set its parameter with handheld communication devices：The working line title of three-phase line, work phase
The Beidou communication terminal address of title, system main website, after the A phase lines of setting three-phase line are finished, reads three-phase current, zero sequence
Electric current, with system master station communication state, sees whether this group of fault indicator is normal, and whole fault detectors are installed simultaneously
After normal work, into the S2 stages；
2）Process the S2 stages of remote measurement remote regulating information：System main website is connect using IEC61850 agreements and arbitrary network terminal communication
By remote measurement remote regulating request of data, if any remote measurement request, then by the finger on the given line of Beidou satellite system and three-phase line
Determine fault detector communication, extract the information such as each current data, working condition under synchronised clock and return to requesting party, if any distant
Request is adjusted, then by specified its running parameter of fault detector communications setting on Beidou satellite system and given line, is entered
The S3 stages；
3）The S3 stages of processing terminal heartbeat message：The minimum interval that system main website every group of fault detector of reception sends 10 seconds,
The interval heartbeat message message of 60 seconds most long, fault detector needs this group of three-phase line of report to connect respectively in heartbeat message
Three fault detectors between whether communicate normal, whether zero-sequence current normal, and system main website this group of failure of comprehensive descision refers to
Whether show device in normal operating conditions, if there is a problem it will send terminal fault message to network, wait the network terminal to look into
Inquiry is processed, into the S4 stages；
4）Whether S4 stage that relay protection act message is received：Power telecom network is monitored on backstage all the time after working on power by system main website
Goose messages in network, recognize type of message in this stage, if receiving short trouble message, the reclosing of line related
Failure message or system single-phase earthing message, then into the S5 stages, otherwise return to the S2 stages；
5）It is the S5 stages of phase fault：In this stage, if the failure that is listened to from power telecom network of system main website
Type is phase fault, then extract line name parameter, accident and the moment occurs, and is then pacified from substation line exit
The fault detector of dress starts, by installation site from closely to remote order, by Beidou satellite system to the failure on the circuit
Indicator group asks accident that the data of each 5 cycles before and after the moment occur successively, if the three-phase current data of upper one group of passback
Increase is mutated after the accident moment, the next group of three-phase current data of passback are mutated reduction after the accident moment, then judge this
Section between two groups of fault detectors is exactly fault section, and fault section message is sent to network, and by Three-Part protocol
Service provider sends short message and reminds to the mobile phone for setting, and network terminal query processing is waited, into the S6 stages；
6）It is the S6 stages of singlephase earth fault：If the fault type that system main website is listened to from power telecom network is single-phase connecing
Earth fault, then send out request zero-sequence current number by Beidou satellite system to the fault detector group on all line relateds immediately
According to message, in the data for returning, by line name by fault detector zero-sequence current data packet inspection, become according to distance
From closely to remote sequential search, if larger with a upper zero-sequence current in group, and next zero-sequence current is smaller, then sentence in power station
The section between two groups of fault detectors that breaks is exactly fault section, and fault section message is sent to network, and by the 3rd
Square Communications service business sends short message and reminds to the mobile phone for setting, and waits network terminal query processing, returns to the S2 stages.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710137782.7A CN106908694B (en) | 2017-03-09 | 2017-03-09 | A kind of distribution line failure indicator and its detection method based on IEC61850 |
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| CN201710137782.7A CN106908694B (en) | 2017-03-09 | 2017-03-09 | A kind of distribution line failure indicator and its detection method based on IEC61850 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110889959A (en) * | 2019-11-28 | 2020-03-17 | 国网山东省电力公司蓬莱市供电公司 | Beidou distribution network communication system and Beidou distribution network communication method |
| CN112782530A (en) * | 2021-01-18 | 2021-05-11 | 珠海安瑞通电子科技有限公司 | Fault indicator for line real-time fault judgment and control method and equipment thereof |
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| CN110889959A (en) * | 2019-11-28 | 2020-03-17 | 国网山东省电力公司蓬莱市供电公司 | Beidou distribution network communication system and Beidou distribution network communication method |
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| CN113220493A (en) * | 2020-02-04 | 2021-08-06 | 北京京东尚科信息技术有限公司 | Fault data processing method and device, storage medium and electronic equipment |
| CN112782530A (en) * | 2021-01-18 | 2021-05-11 | 珠海安瑞通电子科技有限公司 | Fault indicator for line real-time fault judgment and control method and equipment thereof |
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| CN106908694B (en) | 2019-06-11 |
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