CN111698712A - Novel fault indicator based on 5G - Google Patents

Novel fault indicator based on 5G Download PDF

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Publication number
CN111698712A
CN111698712A CN202010549005.5A CN202010549005A CN111698712A CN 111698712 A CN111698712 A CN 111698712A CN 202010549005 A CN202010549005 A CN 202010549005A CN 111698712 A CN111698712 A CN 111698712A
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China
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fault
sensor
distribution network
power distribution
line
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CN111698712B (en
Inventor
覃团发
闫明
郭文豪
胡永乐
沈湘平
钟盛德
罗剑涛
劳源基
官倩宁
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Runjian Co ltd
Guangxi University
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Runjian Co ltd
Guangxi University
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/04Arrangements for maintaining operational condition
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08Locating faults in cables, transmission lines, or networks
    • G01R31/081Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/086Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/04Terminal devices adapted for relaying to or from another terminal or user
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52Outage or fault management, e.g. fault detection or location

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Locating Faults (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a novel fault indicator based on 5G, which comprises: the line information acquisition module is connected with a power distribution network line to acquire line information data; the fault indication module is connected to the line information acquisition module and used for indicating line faults; the 5G communication relay module is connected with the circuit information acquisition module, is communicated with the power distribution network monitoring master station and is simultaneously communicated with the upstream and downstream fault indicators; the line information acquisition module compares line information data or the 5G communication relay module compares the power flow direction and the size of the monitoring point or the combination of the two to judge whether the power distribution network line section is in fault. The invention applies the 5G technology to the line fault indicator of the power distribution network and solves the problems that the conventional optical fiber communication is unreliable, has high cost and can not adapt to the flexible change of the topological structure of the power distribution network. The invention finds the fault and positions the fault section in time, greatly improves the working efficiency of fault finding and avoids serious economic loss caused by the fault.

Description

Novel fault indicator based on 5G
Technical Field
The invention relates to the technical field of power distribution network fault monitoring, in particular to a novel fault indicator based on 5G.
Background
In recent years, the power industry of China is vigorously developed, and the requirements on the power supply reliability and safety of a power distribution network are continuously improved. For a power distribution network, due to factors such as high load density and many short circuits, the traditional fault processing method cannot meet the requirement of safe and reliable operation of the intelligent power distribution network, and often has the defects of low fault removal selectivity, low fault tripping reliability, high loss of switch equipment, long fault processing time and the like.
When a power distribution network fails, generally, only the circuit breaker of an outlet line is disconnected, even if a section switch is adopted, a fault section cannot be accurately isolated, and resources which need to be consumed are huge when a specific fault position is found on a power distribution network line. The number of actual operation and maintenance personnel of the distribution line is insufficient, and the requirement of equipment management of the distribution line cannot be met. In addition, due to the fact that traffic is inconvenient in partial areas and the power supply radius is long, power distribution operation and maintenance personnel need to spend a long time for troubleshooting line faults. How to reduce the troubleshooting range is a big problem which troubles the operation and maintenance of the line. Meanwhile, the more fault types in the power distribution network are grounding faults, and the fault sections are hidden and are not easy to find.
Distribution network line fault indicator carries out the circuit trouble and seeks for distribution network line operation and maintenance personnel and provides an automatic instrument, receives present distribution network line operation and maintenance personnel's welcome, but its intelligent degree still remains to improve, mainly embodies: firstly, the flexibility is low, the traditional fault indicator mainly communicates through an optical fiber network, however, the problems that the optical fiber communication is unreliable, the cost is high, the flexible change of a topological structure of a power distribution network cannot be adapted to and the like exist, so that the fault indicator cannot rapidly and accurately provide the line running condition and timely position a fault section, the working efficiency of fault finding is greatly reduced, and serious economic loss is easily caused; secondly, reliability is low, and false alarm can occur once a sensor in the fault indicator fails.
5G is a new generation wireless mobile communication network, and is mainly used for meeting the mobile communication requirements after 2020. Under the push of ever-increasing energy Internet service demands, 5G is required to have the characteristics of low cost, low energy consumption, safety and reliability.
Therefore, how to apply the 5G technology to the power distribution network line fault indicator becomes a technical problem which needs to be solved urgently to improve the fault handling capacity and efficiency of the power distribution network.
Disclosure of Invention
It is an object of the present invention to address at least the above-mentioned deficiencies and to provide at least the advantages which will be described hereinafter.
The invention also aims to apply the 5G technology to the power distribution network line fault indicator, the field information of the fault indicator is sent to the power distribution main station system through the advanced 5G communication network, and after the data processing of the main station system, operation and maintenance personnel can know the fault mode and the fault position of the power distribution network line, so that the fault processing capability of the power distribution network is greatly improved, the rapid and reliable power supply recovery is realized, and the power failure time is reduced.
To achieve these objects and other advantages and in accordance with the purpose of the invention, the present invention provides a novel 5G-based fault indicator comprising:
the line information acquisition module is connected with a power distribution network line to acquire line information data;
the fault indication module is connected to the line information acquisition module and used for prompting line faults;
the 5G communication relay module is connected with the line information acquisition module, is communicated with the power distribution network monitoring master station, and is simultaneously communicated with the upstream and downstream fault indicators;
the line information acquisition module is used for comparing the acquired line information data or the 5G communication relay module is used for comparing the power flow direction and the size of the monitoring points or combining the power flow direction and the size of the monitoring points so as to judge whether the power distribution network line section is in fault or not. The line fault can be judged through the line information acquisition module, the line fault can be judged through the 5G communication relay module, or the line fault can be judged through the combination of the line information acquisition module and the 5G communication relay module, the processor of the 5G communication relay module is fully utilized, and the fault tolerance and the processing efficiency are improved.
In the technical scheme, the 5G technology is applied to the power distribution network line fault indicator, and the field information of the fault indicator is sent to the power distribution main station system through the advanced 5G communication network, so that the problems that the conventional optical fiber communication is unreliable, the cost is high, and the flexible change of a power distribution network topological structure cannot be adapted are solved.
Meanwhile, the line information acquisition module rapidly acquires line information data, and the fault indication module can prompt faults, so that accurate line operation conditions are provided for workers of the power distribution network monitoring main station, faults are found in time, a fault section (area) is located in time, the work efficiency of fault finding is greatly improved, and serious economic loss caused by faults is avoided.
Preferably, in the novel 5G-based fault indicator, the line information collection module includes:
a sensor unit (sensor group) for measuring line information data;
a central processing unit for processing the line information data;
and the wireless communication unit is connected with the central processing unit.
Preferably, in the novel 5G-based fault indicator, the sensor units are respectively connected to A, B, C phases of three-phase alternating current in a power distribution network line, and the line information data comprise one or more of current, voltage and temperature information.
Preferably, in the novel fault indicator based on 5G, the sensor unit is composed of three sensors, and the three sensors respectively collect line information data, so as to ensure accuracy and reliability of information collection.
Preferably, in the novel 5G-based fault indicator, the central processing unit compares the data acquired by the three sensors pairwise;
if the difference values are all smaller than the set threshold value, the data mean values of the three sensors are normally output;
if the difference is not less than the set threshold, the data is invalidated and an alarm is sent.
By the scheme, whether the line breaks down or not can be judged quickly, and an alarm can be given in time.
Preferably, in the novel 5G-based fault indicator, the central processing unit is configured to:
receiving data collected by the three sensors;
calculating a difference value a of data acquired by the sensor 1 and the sensor 2;
if the difference a is smaller than the set threshold, calculating the difference b of the data acquired by the sensor 2 and the sensor 3, and if the difference b is smaller than the set threshold; normally outputting the data mean value of the three sensors; if the difference b is not less than the set threshold, outputting the data mean value of the sensor 1 and the sensor and judging that the sensor 3 has a fault;
if the difference a is not smaller than the set threshold value, but the difference b is smaller than the set threshold value, outputting the data mean value of the sensor 2 and the sensor 3 and judging that the sensor 1 is in fault; if the difference b is not smaller than the set threshold, calculating a difference c of the data acquired by the sensor 1 and the sensor 3, and if the difference c is smaller than the set threshold, outputting a data mean value of the sensor 1 and the sensor 3 and judging that the sensor 2 has a fault; if the difference c is not less than the set threshold, the data is invalidated and an alarm is given.
Among the above-mentioned technical scheme, the information data that three sensor gathered compares each other, accomplishes the self-checking of sensor trouble, consequently has self-checking function, also can continue work when certain sensor breaks down, and it is also more accurate to measure simultaneously to information acquisition's accuracy and reliability have been guaranteed.
Preferably, in the novel fault indicator based on 5G, after the central processing unit determines a fault and sends an alarm, the fault indication module sends an alarm. The type and location of the fault is accurately indicated.
Preferably, in the novel 5G-based fault indicator, all data mean values and fault information processed by the central processing unit are regularly sent to the power distribution network monitoring master station through the 5G communication relay module; when an alarm is sent out, the alarm information is immediately sent to the power distribution network monitoring main station through the 5G communication relay module. And accurately prompting the type and the position of the fault.
Preferably, in the novel fault indicator based on 5G, set up a monitoring point at every section distance on the distribution network line, every monitoring point installation novel fault indicator based on 5G carries out wireless connection in order to realize information intercommunication each other, sensor unit measures the electric quantity of corresponding monitoring point, establishes the treater in the 5G communication relay module, 5G communication relay module compares the electric quantity that records with the electric quantity that upstream and downstream monitoring point surveyed, judges whether electric power trend size and direction are unanimous in the regulation threshold value, if inconsistent, then judges that the circuit section of monitoring point place breaks down.
Among the above-mentioned technical scheme, directly compare the electric quantity that the sensor surveyed with the electric quantity that the upstream and downstream sensor surveyed, if unusual then can judge that this circuit section breaks down, the precision is high, and the good reliability, and handles data on the spot, can effectively slow down communication pressure, can adapt to the nimble change of distribution network topological structure in a flexible way, and synthesize two parameters of voltage and electric current and consider in unison, be favorable to data integration.
Preferably, in the novel 5G-based fault indicator, the line information acquisition module is disposed on the clamping member and is mounted on the power distribution network line through the clamping member, and the clamping member includes:
the concave part of the upper arc-shaped plate faces downwards and forms an accommodating space, and the sensor unit, the central processing unit and the wireless communication unit are arranged in the accommodating space;
the lower arc-shaped plate is hinged to the lower portion of the upper arc-shaped plate to form an openable structure so as to clamp the power distribution network circuit, the accommodating space corresponds to the wrapping space to form a circular clamping space, the power distribution network circuit is limited in the clamping space, two ends of the upper arc-shaped plate and two ends of the lower arc-shaped plate are respectively provided with an insulating rubber pad for elastically clamping the power distribution network circuit, and the insulating rubber pads are semicircular so as to seal two ends of the clamping space; the clamping device is characterized in that a spring is arranged in the clamping space, two ends of the spring are respectively connected with the upper arc-shaped plate and the lower arc-shaped plate, screw holes are respectively formed in the upper arc-shaped plate and the lower arc-shaped plate, and the screw holes are matched with bolts so that the upper arc-shaped plate and the lower arc-shaped plate can keep a clamping closed state.
In the technical scheme, the clamping component can be opened and closed quickly to clamp the power distribution network circuit, so that the sensor can be mounted on the power distribution network circuit, the mounting difficulty is reduced, and the mounting efficiency is improved; simultaneously, after clamping, the insulating rubber mat seals the clamping space, and prevents wind and rain from entering the clamping space to influence the operation of the sensor.
Although the 4G technology is widely applied to the field of power distribution networks, the 4G technology has some disadvantages, such as slow speed and high delay in use; the capacity is not large enough, and the link of mass equipment cannot be met; the signal strength is also poor, and the packet loss phenomenon often occurs when the signal is easily influenced by building areas, mountain areas and other obstacles. This has made the fault indicators we developed somewhat difficult:
1. the fault indication needs very low time delay, otherwise, when the fault occurs, serious consequences can be caused, and the power distribution network line can be damaged.
2. The sensors needed by the power line are thousands of, and since the communication pressure is too large in the past, a lot of data are discarded, even complete data acquisition cannot be completed, so that great difficulty is caused in data analysis.
3. The power distribution network has complex circuit environment, and signals are easily affected by various obstacles, which causes great difficulty to data transmission.
5G is used as a new generation mobile communication technology, will meet the mobile data growth requirement of more than thousand times in 2020 and the future, provide the high-quality service of multiple scenes such as the access rate like optical fiber, the use experience of 'zero' time delay, the connection capability of billions of equipment, ultrahigh flow density, ultrahigh connection number density, ultrahigh mobility and the like for users, and well optimize the service and user perception. The key index is shown in fig. 5 compared with 4G.
With regard to the difficulties of the fault indicator, we can apply 5G techniques to solve, respectively:
1. the time delay is reduced by the method of improving the frequency spectrum range, improving the frequency spectrum utilization rate and improving the transmission efficiency, and the requirement of quick response of the power distribution network fault is met.
2. By the improvement of the frequency spectrum width, the wide application of the micro base station and the innovation of the air interface technology, the connection of mass equipment can be supported, the problem of data acquisition of the fault indicator is solved, and sufficient convenience is provided for data analysis.
3. The multi-connection technology can improve the signal strength to a great extent, and under the technology, the communication of a user does not depend on a single frequency band and a single system, and the stable data transmission can be still maintained even if interference occurs in a certain communication mode. Thereby avoiding the influence of urban obstacles on the signal.
The invention at least comprises the following beneficial effects:
according to the invention, the 5G technology is applied to the line fault indicator of the power distribution network, and the field information of the fault indicator is sent to the power distribution main station system through the advanced 5G communication network, so that the problems that the conventional optical fiber communication is unreliable, the cost is high, and the flexible change of the topology structure of the power distribution network cannot be adapted are solved. After information data reaches distribution network control main website, fortune dimension personnel learn the trouble mode and the fault location that distribution lines took place fast, will increase substantially the fault handling capacity of distribution network, realize quick, reliable power restoration, reduce the power off time.
Secondly, the three sensors form a sensor unit, information data acquired by the sensors are compared with one another, and self-checking of sensor faults is completed, so that the sensor unit has a self-checking function, can continuously work when a certain sensor fails, and is more accurate in measurement, and accuracy and reliability of information acquisition are guaranteed.
Finally, the 5G relay communication module directly compares the electric quantity measured by the sensor with the electric quantity measured by the upstream and downstream sensors, if the electric quantity measured by the sensor is abnormal, the fault of the line section can be judged, the precision is high, the reliability is good, the data is processed on site, the communication pressure can be effectively reduced, the flexible change of the topological structure of the power distribution network can be flexibly adapted, the two parameters of the comprehensive voltage and the current are considered in a unified mode, and the data integration is facilitated.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of a connection structure of the novel 5G-based fault indicator according to the present invention;
fig. 2 is a schematic view of a connection structure of the line information acquisition module according to the present invention;
FIG. 3 is a schematic diagram of the structure of a sensor unit (sensor group) according to the present invention;
FIG. 4 is a flow chart of the CPU process according to the present invention;
FIG. 5 is a comparison of key performance indicators for 5G and 4G;
FIG. 6 is a schematic view of the structure of the clamping member of the present invention;
FIG. 7 is a schematic structural view of the insulating rubber mat according to the present invention;
fig. 8 is a perspective view of the clamping member of the present invention.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
As shown in fig. 1, a novel 5G-based fault indicator includes:
a line information acquisition module connected to the power distribution network line for acquiring line information data
The fault indication module is connected to the line information acquisition module and used for prompting line faults;
the 5G communication relay module is connected with the line information acquisition module, is communicated with the power distribution network monitoring master station, and is simultaneously communicated with the upstream and downstream fault indicators;
the line information acquisition module is used for comparing the acquired line information data or the 5G communication relay module is used for comparing the power flow direction and the size of the monitoring points or combining the power flow direction and the size of the monitoring points so as to judge whether the power distribution network line section is in fault or not. The line fault can be judged through the line information acquisition module, the line fault can be judged through the 5G communication relay module, or the line fault can be judged through the combination of the line information acquisition module and the 5G communication relay module, the processor of the 5G communication relay module is fully utilized, and the fault tolerance and the processing efficiency are improved.
The 5G communication relay module is used for remotely transmitting the line information data acquired by the line information acquisition module to the monitoring master station through a 5G network. When the relay communication module is normal, the phase line information acquisition modules send information data to the relay communication module at regular time, and when the information data exceeds the limit, alarm information is sent.
Meanwhile, the 5G communication relay module can compare the power flow direction and the size of the monitoring point by means of a processor of the 5G communication relay module so as to judge whether a power distribution network line section fails.
Further, in another embodiment, as shown in fig. 2, the line information collecting module includes:
a sensor unit (sensor group) for measuring line information data;
a central processing unit for processing the line information data;
and the wireless communication unit is connected with the central processing unit.
Further, in another embodiment, the sensor units are respectively connected to A, B, C phases of three-phase alternating current in a power distribution network line, and the line information comprises one or more of current, voltage and temperature information.
Further, in another embodiment, as shown in fig. 3, the sensor unit is composed of three sensors, and the three sensors respectively collect the line information.
Further, in another embodiment, the central processing unit compares the data collected by the three sensors pairwise; such as current difference, voltage difference, temperature difference;
if the difference values are all smaller than the set threshold value, the data mean values of the three sensors are normally output;
if the difference is not less than the set threshold, the data is invalidated and an alarm is sent.
Further, in another embodiment, as shown in fig. 4, the central processing means is configured to:
receiving data collected by the three sensors;
calculating a difference value a of data acquired by the sensor 1 and the sensor 2; such as current difference, voltage difference, temperature difference;
if the difference a is smaller than the set threshold, calculating the difference b of the data acquired by the sensor 2 and the sensor 3, and if the difference b is smaller than the set threshold; normally outputting the data mean value of the three sensors; if the difference b is not less than the set threshold, outputting the data mean value of the sensor 1 and the sensor and judging that the sensor 3 has a fault;
if the difference a is not smaller than the set threshold value, but the difference b is smaller than the set threshold value, outputting the data mean value of the sensor 2 and the sensor 3 and judging that the sensor 1 is in fault; if the difference b is not smaller than the set threshold, calculating a difference c of the data acquired by the sensor 1 and the sensor 3, and if the difference c is smaller than the set threshold, outputting a data mean value of the sensor 1 and the sensor 3 and judging that the sensor 2 has a fault; if the difference c is not less than the set threshold, the data is invalidated and an alarm is given.
Further, in another embodiment, the fault indication module issues an alert after the central processor determines a fault and issues an alert.
Further, in another embodiment, all the data mean values processed by the central processing unit are sent to the power distribution network monitoring master station through the 5G communication relay module at regular time; when an alarm is sent out, the alarm information is immediately sent to the power distribution network monitoring main station through the 5G communication relay module.
Further, set up a monitoring point every a section distance on the distribution network line, every monitoring point installation novel fault indicator based on 5G and carry out wireless connection in order to realize information intercommunication each other, the electric quantity of corresponding monitoring point is measured to the sensor unit, central processing unit compares the electric quantity that records with the electric quantity that upper and lower stream monitoring point surveyed, judges whether electric power trend size and direction are unanimous in the regulation threshold value, if inconsistent, then judges that the monitoring point breaks down in the circuit section.
Among the above-mentioned technical scheme, directly compare the electric quantity that the sensor surveyed with the electric quantity that the upstream and downstream sensor surveyed, if unusual then can judge that this circuit section breaks down, the precision is high, and the good reliability, and handles data on the spot, can effectively slow down communication pressure, can adapt to the nimble change of distribution network topological structure in a flexible way, and synthesize two parameters of voltage and electric current and consider in unison, be favorable to data integration.
Further, as shown in fig. 6 to 8, the sensor unit 4 is disposed on the clamping member 1 and is mounted to the distribution network line through the clamping member 1, and the clamping member 1 includes:
an upper arc-shaped plate 2, the concave part of which faces downwards and forms an accommodating space, wherein the sensor unit 4 and the wireless communication unit are arranged in the accommodating space;
the lower arc-shaped plate 3 is provided with a concave part which faces upwards to form a wrapping space, the lower arc-shaped plate 3 is hinged to the lower part of the upper arc-shaped plate 2 to form an openable structure so as to clamp a power distribution network circuit 5, an accommodating space corresponds to the wrapping space to form a circular clamping space, the power distribution network circuit 5 is limited in the clamping space, two ends of the upper arc-shaped plate 2 and two ends of the lower arc-shaped plate 3 are respectively provided with an insulating rubber pad (8,9) for elastically clamping the power distribution network circuit 5, and the insulating rubber pads (8,9) are semicircular so as to seal two ends of the clamping space; the clamping device is characterized in that a spring 6 is arranged in the clamping space, two ends of the spring 6 are respectively connected with the upper arc-shaped plate 2 and the lower arc-shaped plate 3, screw holes are respectively formed in the upper arc-shaped plate 2 and the lower arc-shaped plate 3, and the screw holes are matched with bolts 7 so that the upper arc-shaped plate 2 and the lower arc-shaped plate 3 can keep a clamping closed state.
When the clamping device is used, the clamping component is directly opened, then the power distribution network line is clamped, and then the clamping component is fixed by using bolts, and the clamping component can be quickly opened and closed to clamp the power distribution network line, so that a sensor can be installed on the power distribution network line, the installation difficulty is reduced, and the installation efficiency is improved; simultaneously, after clamping, the insulating rubber mat seals the clamping space, and prevents wind and rain from entering the clamping space to influence the operation of the sensor.
During installation:
1: a plurality of line information acquisition modules are installed, the acquisition modules are connected with the fault indication module and the 5G communication relay module, and meanwhile the 5G communication relay module is connected with the power distribution network monitoring master station.
2: the line information acquisition module comprises a sensor for measuring various information, a central processing unit and a wireless communication unit, is arranged on A, B, C phases and is used for monitoring the current, voltage and temperature information of a three-phase line.
3: and if the acquired information is compared with a set threshold value, judging that a fault occurs, and sending out a warning by the fault indicating module.
4: the 5G communication relay module is used for remotely transmitting the line information data acquired by the line information acquisition module to the monitoring master station through a 5G network. When the relay communication module is normal, the phase line information acquisition modules send information data to the relay communication module at regular time, and when the information data exceeds the limit, alarm information is sent.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art.

Claims (10)

1. A novel fault indicator based on 5G is characterized by comprising:
the line information acquisition module is connected with a power distribution network line monitoring point to acquire line information data;
the fault indication module is connected to the line information acquisition module and used for prompting line faults;
the 5G communication relay module is connected with the line information acquisition module, is communicated with the power distribution network monitoring main station, and is communicated with a novel 5G-based fault indicator arranged at the upstream and downstream;
the line information acquisition module is used for comparing the acquired line information data or the 5G communication relay module is used for comparing the power flow direction and the size of the monitoring points or combining the power flow direction and the size of the monitoring points so as to judge whether the power distribution network line section is in fault or not.
2. The novel 5G-based fault indicator of claim 1, wherein the line information collection module comprises:
a sensor unit for measuring line information data;
a central processing unit for processing the line information data;
and the wireless communication unit is connected with the central processing unit and the 5G communication relay module.
3. The 5G-based novel fault indicator of claim 2, wherein A, B, C phases in a power distribution network line are connected with the sensor units respectively, and the line information comprises one or more of current, voltage and temperature information.
4. The 5G-based novel fault indicator as claimed in claim 2, wherein the sensor unit is composed of three sensors, and the three sensors respectively collect line information.
5. The 5G-based novel fault indicator as claimed in claim 4, wherein the central processor compares the data collected by the three sensors pairwise;
if the difference values are all smaller than the set threshold value, the data mean values of the three sensors are normally output;
if the difference is not less than the set threshold, the data is invalidated and an alarm is sent.
6. The novel 5G-based fault indicator of claim 5, wherein the central processing means is configured to:
receiving data collected by the three sensors;
calculating a difference value a of data acquired by the sensor 1 and the sensor 2;
if the difference a is smaller than the set threshold, calculating the difference b of the data acquired by the sensor 2 and the sensor 3, and if the difference b is smaller than the set threshold; normally outputting the data mean value of the three sensors; if the difference b is not less than the set threshold, outputting the data mean value of the sensor 1 and the sensor and judging that the sensor 3 has a fault;
if the difference a is not smaller than the set threshold value, but the difference b is smaller than the set threshold value, outputting the data mean value of the sensor 2 and the sensor 3 and judging that the sensor 1 is in fault; if the difference b is not smaller than the set threshold, calculating a difference c of the data acquired by the sensor 1 and the sensor 3, and if the difference c is smaller than the set threshold, outputting a data mean value of the sensor 1 and the sensor 3 and judging that the sensor 2 has a fault; if the difference c is not less than the set threshold, the data is invalidated and an alarm is given.
7. The 5G-based novel fault indicator of claim 6, wherein the fault indication module issues an alert after the central processor determines a fault and issues an alarm.
8. The 5G-based novel fault indicator as claimed in claim 6, wherein all data mean values processed by the central processing unit are periodically transmitted to the power distribution network monitoring master station through the 5G communication relay module; when an alarm is sent out, the alarm information is immediately sent to the power distribution network monitoring main station through the 5G communication relay module.
9. The 5G-based novel fault indicator according to claim 1, wherein monitoring points are arranged on the distribution network line at intervals, each monitoring point is provided with the 5G-based novel fault indicator and wirelessly connected with each other to achieve information intercommunication, the sensor unit measures electrical quantities of the corresponding monitoring points, the 5G communication relay module compares the measured electrical quantities with electrical quantities measured by upstream and downstream monitoring points to judge whether the size and direction of the power flow are consistent within a specified threshold value, and if the size and direction are inconsistent, a fault is determined in the line section where the monitoring points are located.
10. The novel 5G-based fault indicator according to claim 4, wherein the line information acquisition module is arranged on a clamping component and is mounted on a power distribution line through the clamping component, and the clamping component comprises:
the concave part of the upper arc-shaped plate faces downwards and forms an accommodating space, and the sensor unit, the central processing unit and the wireless communication unit are arranged in the accommodating space;
the lower arc-shaped plate is hinged to the lower portion of the upper arc-shaped plate to form an openable structure so as to clamp the power distribution network circuit, the accommodating space corresponds to the wrapping space to form a circular clamping space, the power distribution network circuit is limited in the clamping space, two ends of the upper arc-shaped plate and two ends of the lower arc-shaped plate are respectively provided with an insulating rubber pad for elastically clamping the power distribution network circuit, and the insulating rubber pads are semicircular so as to seal two ends of the clamping space; the clamping device is characterized in that a spring is arranged in the clamping space, two ends of the spring are respectively connected with the upper arc-shaped plate and the lower arc-shaped plate, screw holes are respectively formed in the upper arc-shaped plate and the lower arc-shaped plate, and the screw holes are matched with bolts so that the upper arc-shaped plate and the lower arc-shaped plate can keep a clamping closed state.
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