CN104483600A - Fault detector for intelligent on-line fault monitoring system of cable line - Google Patents
Fault detector for intelligent on-line fault monitoring system of cable line Download PDFInfo
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- CN104483600A CN104483600A CN201410803635.5A CN201410803635A CN104483600A CN 104483600 A CN104483600 A CN 104483600A CN 201410803635 A CN201410803635 A CN 201410803635A CN 104483600 A CN104483600 A CN 104483600A
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Abstract
The invention discloses a fault detector of an intelligent on-line fault monitoring system of a cable line. The fault detector comprises a housing, a singlechip control unit mounted in the housing, as well as a 2.4G wireless communication module, a current sensor and a light alarm module that are connected with the singlechip control unit, wherein the current sensor is connected with the cable line, collects 12 points of each cycle for fourier current calculation in real time and transmits collected information to the singlechip control unit; and the singlechip control unit accurately obtains a real-time on-line current value of the current line, carries out wireless bidirectional radio frequency short-distance communication with a centralized processor via the 2.4G wireless communication module and transmits collected data to the centralized processor for further processing. The fault detector can completely monitor fault situations such as short circuit, earthing, overload, line breaking, power failure, triphase unbalance, stealing and cutting on the line.
Description
Technical field
The present invention relates to a kind of fault detector for cable line fault intelligent online monitoring system, belong to wireline inspection technical field.
Background technology
In power distribution circuit, because reasons such as circuit length, branch head, complex structures, when haveing the faults such as line short, broken string, power failure, three-phase imbalance, overload, trouble spot and failure cause cannot be detected in time, and then extend the repair time, cause large-scale power failure, cause larger economic loss.At present, although also fault detector can be installed in cable line, but still there is following defect:
1, fault detector adopts differential, integrating analog circuit, insensitive to small area analysis signal;
2, fault detector and focusing between device as single-phase communication, Surveillance center cannot the detected parameters of remotely modifying fault detector, reclosing non-faulting branch can not be stopped shove and feed back the malfunction that power transmission causes, if can malfunction (tripping) then malfunction forever go down;
3, fault detector can only gather and send current information, cannot send alerting signal.
In view of this, the present inventor studies this, and develop a kind of fault detector for cable line fault intelligent online monitoring system specially, this case produces thus.
Summary of the invention
The object of this invention is to provide a kind of fault detector for cable line fault intelligent online monitoring system, short circuit on comprehensive monitoring circuit, ground connection, overload, broken string, power failure, three-phase imbalance, robber the failure condition such as to cut.
To achieve these goals, solution of the present invention is:
A kind of fault detector for cable line fault intelligent online monitoring system, comprise shell, and the single chip control unit of installing in the enclosure, the 2.4G wireless communication module be connected with single chip control unit, current sensor and light warning module, current sensor is connected with cable line, 12, each cycle of Real-time Collection does Fourier's Current calculation, and Information Monitoring is sent to single chip control unit, single chip control unit accurately obtains the real-time online current value of current line, and the current break information being less than a cycle (20ms) can be caught in real time, single chip control unit is by 2.4G wireless communication module and focus on device and carry out wireless two-way radio frequency short haul connection, image data is sent to and focuses on device and be further processed, the current sensor of described fault detector adopts high magnetic conduction em induced current sensor, described fault detector adopts model to be nRF24L01 chip with the 2.4G wireless communication module focusing on device.
As preferably, the single chip control unit of described fault detector adopts the monolithic chip of AT89 series.
As preferably, the light warning module of described fault detector is red LED, when there is line fault, the light warning module of the fault detector of the corresponding trouble spot of supervisory system server controls sends alerting signal, reminds maintenance personal to carry out fault handling in time.
Described fault detector is arranged on the three-phase conducting wire of cable line respectively, form A phase fault detecting device, B phase fault detecting device and C phase fault detecting device, same cable circuit installs one group of fault detector every 1.5-2km, be provided with in described fault detector, focus on device and be also provided with corresponding 2.4G wireless communication module, fault detector and focus between device and carry out wireless two-way radio frequency short haul connection by 2.4G wireless communication module, there is antijamming capability strong, the features such as message transmission rate block, described fault detector is provided with single chip control unit, and the current sensor to be connected with single chip control unit and light warning module, 12, each cycle of Real-time Collection does Fourier's Current calculation, accurately obtain the real-time online current value of current line, and the current break information being less than a cycle (20ms) can be caught in real time, the described device that focuses on is connected with supervisory system server by communication switchboard, focusing on device is arranged on pylon bar, receive the sampled data of ABC3 phase fault detecting device and carry out failure message primary Calculation, and the data after Treatment Analysis are sent to communication switchboard, communication switchboard is uploaded to supervisory system server after being decoded by failure message, after the line fault of each installation node is comprehensively analyzed by supervisory system server, show out of order concrete circuit and concrete trouble spot on the one hand, the light warning module controlling the fault detector of corresponding trouble spot on the other hand sends alerting signal.
As preferably, described in focus on device and communicated with communication switchboard by GSM mobile communication module.
Above-mentioned a kind of fault detector principle of work for cable line fault intelligent online monitoring system: the three-phase conducting wire of cable line all installs fault detector, form A phase fault detecting device, B phase fault detecting device and C phase fault detecting device, same cable circuit installs one group of fault detector every 1.5-2km, three fault detector Real-time Collection three-phase current information, and the current information collected is passed to by 2.4G wireless communication module focus on device, focus on the current information that device transmits according to three fault detectors, thus judge concrete fault, failure message is passed back communication switchboard again by GSM mobile communication module, communication switchboard is uploaded to supervisory system server after being decoded by failure message, after the line fault of each installation node is comprehensively analyzed by supervisory system server, show out of order concrete circuit and concrete trouble spot, and line fault point and fault type are sent to responsible person concerned's mobile phone by GSM short message mode, failture evacuation is carried out by responsible person concerned, simultaneously, supervisory system server is also by communication switchboard with focus on the light warning module that device controls the fault detector of corresponding trouble spot and send alerting signal, timely prompting maintenance personal carries out fault handling.
Compared with prior art, above-mentioned a kind of fault detector for cable line fault intelligent online monitoring system has following several advantage:
1) traditional ordinary failures detector technologies principle and traditional FTU standard is broken through, without the need to PT and CT, without the need to switch or switch transformation, equipotential and the installation that do not have a power failure, applied widely, input-output ratio is high, reliable, short circuit on comprehensive monitoring circuit, ground connection, overload, broken string, power failure, three-phase imbalance, robber the failure condition such as to cut, help the rapid looking up the fault point of operations staff, avoid accident to expand further;
2) carry out overall monitor by the online current system of fault detector Real-time Collection to line fault, breakdown judge more in time, accurately;
3) fault detector by 2.4G wireless communication module with focus on device and carry out two-way short-distance wireless frequency modulation telecommunication, easy to maintenance, and can the malfunction determination parameter such as on-line tuning short circuit, ground connection, open circuit, greatly improve the accuracy that short trouble detects;
4) light warning module is directly set on fault detector, when a failure occurs it, staff can be pointed out in time, shorten servicing time.
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the module frame chart of the cable line fault intelligent online monitoring system of the present embodiment;
Fig. 2 is the fault detector single chip control unit circuit theory diagrams of the present embodiment;
Fig. 3 is the fault detector 2.4G wireless communication module circuit diagram of the present embodiment.
Embodiment
Fault detector of the present invention is mainly used in cable line fault intelligent online monitoring system as shown in Figure 1, described cable line fault intelligent online monitoring system comprises several fault detectors 1, focus on device 2, communication switchboard 3 and supervisory system server 4, described fault detector 1 is arranged on the three-phase conducting wire of cable line respectively, form A phase fault detecting device, B phase fault detecting device and C phase fault detecting device, same cable circuit installs one group of fault detector every 1.5-2km, described fault detector 1 comprises shell, and be arranged on the current sensor 11 that enclosure is connected successively, single chip control unit 12, 2.4G wireless communication module 13 and light warning module 14, wherein, described current sensor 11 adopts high permeability material em induced current sensor, 12, each cycle of fault detector 1 Real-time Collection does Fourier's Current calculation, accurately obtain the real-time online current value of current line, and the current break information being less than a cycle (20ms) can be caught in real time.The described device 2 that focuses on also is provided with corresponding 2.4G wireless communication module, fault detector 1 and focus between device 2 and carry out wireless two-way radio frequency short haul connection by 2.4G wireless communication module, has antijamming capability strong, the features such as message transmission rate block.The light warning module 14 of described fault detector 1 is red LED.
The described device 2 that focuses on is connected with supervisory system server 4 by communication switchboard 3, focusing on device 2 is arranged on cable tower bar, communicated with communication switchboard 3 by GSM mobile communication module, receive the sampled data of ABC3 phase fault detecting device 1 and carry out failure message primary Calculation, and the data after Treatment Analysis are sent to communication switchboard 3, communication switchboard 3 is uploaded to supervisory system server after being decoded by failure message.
As shown in Figure 2, the single chip control unit 12 of described fault detector 1 adopts the monolithic chip of AT89 series, and the present embodiment adopts model to be the single-chip microcomputer of AT89LS5X.The data that single chip control unit 12 collects for the treatment of current sensor 11 calculate, and drive light warning module 14 to send warning message simultaneously.
As shown in Figure 3, the 2.4G wireless communication module 13 of described fault detector 1 adopts model to be nRF24L01 chip, and nRF24L01 is a monolithic wireless transceiver chip being operated in the ISM frequency range of 2.4GHz ~ 2.5GHz.Can directly be connected with single-chip microcomputer, relevant interface signal instruction is as follows:
CSN:SPI chip selection signal;
MOSI: input from SPI data;
MISO: export from SPI data;
SCK:SPI clock signal;
IRQ: interrupt request singal;
CE: receive (RX)/send (TX) model selection.
Fault detector principle of work for cable line fault intelligent online monitoring system of the present invention: three fault detector 1 Real-time Collection three-phase current information, and the current information collected is passed to by 2.4G wireless communication module 13 focus on device 2, focus on the current information that device 2 transmits according to three fault detectors 1, thus judge concrete fault, failure message is passed back communication switchboard 3 by GSM mobile communication module, communication switchboard 3 is uploaded to supervisory system server 4 after being decoded by failure message, after the line fault of each installation node is comprehensively analyzed by supervisory system server 4, show out of order concrete circuit and concrete trouble spot, and line fault point and fault type are sent to responsible person concerned's mobile phone 5 by GSM short message mode, failture evacuation is carried out by responsible person concerned.Meanwhile, supervisory system server 4, also by communication switchboard 3 with focus on the light warning module 14 that device 2 controls the fault detector 1 of corresponding trouble spot and send alerting signal, reminds maintenance personal to carry out fault handling in time.
Above-described embodiment and graphic and non-limiting product form of the present invention and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present invention.
Claims (3)
1. the fault detector for cable line fault intelligent online monitoring system, it is characterized in that: comprise shell, and the single chip control unit of installing in the enclosure, the 2.4G wireless communication module be connected with single chip control unit, current sensor and light warning module, current sensor is connected with cable line, 12, each cycle of Real-time Collection does Fourier's Current calculation, and Information Monitoring is sent to single chip control unit, single chip control unit accurately obtains the real-time online current value of current line, and by 2.4G wireless communication module with focus on device and carry out wireless two-way radio frequency short haul connection, image data is sent to and focuses on device and be further processed, described current sensor adopts high magnetic conduction em induced current sensor, described 2.4G wireless communication module adopts model to be nRF24L01 chip.
2. a kind of fault detector for cable line fault intelligent online monitoring system as claimed in claim 1, is characterized in that: the single chip control unit of described fault detector adopts the monolithic chip of AT89 series.
3. a kind of fault detector for cable line fault intelligent online monitoring system as claimed in claim 1, is characterized in that: the light warning module of described fault detector adopts red LED lamp.
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| CN201410803635.5A CN104483600A (en) | 2014-12-23 | 2014-12-23 | Fault detector for intelligent on-line fault monitoring system of cable line |
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| CN201410803635.5A CN104483600A (en) | 2014-12-23 | 2014-12-23 | Fault detector for intelligent on-line fault monitoring system of cable line |
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Cited By (3)
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| CN106526348A (en) * | 2015-09-14 | 2017-03-22 | 广州汽车集团股份有限公司 | Detection method and apparatus for the reliability of high voltage wiring harness |
| CN108845566A (en) * | 2018-09-06 | 2018-11-20 | 易思维（杭州）科技有限公司 | The trouble hunting method of industry control machine control system |
| CN111459066A (en) * | 2020-04-13 | 2020-07-28 | 深圳市永恒光照明科技有限公司 | Underground pipe network monitoring system of urban lighting facility |
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| CN111459066A (en) * | 2020-04-13 | 2020-07-28 | 深圳市永恒光照明科技有限公司 | Underground pipe network monitoring system of urban lighting facility |
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Application publication date: 20150401 |