CN103529348B - A kind of high tension cable fault monitoring method - Google Patents
A kind of high tension cable fault monitoring method Download PDFInfo
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- CN103529348B CN103529348B CN201310481036.1A CN201310481036A CN103529348B CN 103529348 B CN103529348 B CN 103529348B CN 201310481036 A CN201310481036 A CN 201310481036A CN 103529348 B CN103529348 B CN 103529348B
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- cable
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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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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Locating Faults (AREA)
Abstract
A kind of high tension cable fault monitoring method, the method uses high tension cable failure monitoring device, the electric current of each phase in monitoring high voltage power cable two ends and temperature information, and by incoming for surveyed data background monitoring, backstage sends misoperation alarm.This device is by cable (7) head end current measuring device, head end temp sensor device, remote terminal (1), end current measurement apparatus and terminal temperature sensor device (2), power supply and background system (6) composition.Head end current measuring device, head end temperature sensor and remote terminal are arranged on cable head；End current measurement apparatus and terminal temperature sensor are arranged on cable end piece；The data that current measuring device is surveyed with temp sensor device are communicated the incoming background monitoring of (4) mode by GPRS through remote terminal.Apparatus of the present invention simple in construction, only need to monitor curent change and the variations in temperature of cable first and last end, just can judge the fault of cable.The present invention is applicable to the malfunction monitoring of high tension cable.
Description
Technical field
The present invention relates to a kind of high tension cable fault monitoring method, belong to cable fault monitoring technical field.
Background technology
Now with the development of Process of Urbanization Construction, urban electric power cable application is more and more extensive.Cable installation and operation major part is in underground and conduit line, operating condition does not knows about substantially, cannot understand when overload and hot operation occurs in cable, therefore cable fault can be caused, external force is destroyed cable (excavator, artificial ditching) repair personnel and can not be rushed towards scene in time simultaneously, emergency repair time can only be delayed by making an inspection tour discovery on the way.City major part circuit belongs to cable run, overhead transmission line mixed type, and being difficult to judgement when line failure is overhead transmission line fault or cable line fault, brings great difficulty to operation maintenance people finder's fault.After have found cable line fault, can't quickly distinguish reason, have a strong impact on cable inspection speed, reduce power supply reliability.
Summary of the invention
It is an object of the present invention to provide a kind of method monitoring high voltage power cable operating condition, can find early when overload and overheated misoperation occurs in cable, carry out in advance safeguarding and transfer load, it is to avoid cable fault occurs.
The technical scheme is that, the present invention uses a kind of high tension cable failure monitoring device, the electric current of each phase in monitoring high voltage power cable two ends and temperature information, and by incoming for surveyed data background monitoring, backstage sends misoperation alarm.
Described high tension cable failure monitoring device is made up of cable head current measuring device, head end temp sensor device, end current measurement apparatus and terminal temperature sensor device, power supply, remote terminal and background system.Head end current measuring device, head end temperature sensor and remote terminal are arranged on cable head；End current measurement apparatus and terminal temperature sensor are arranged on cable end piece；The data that current measuring device and temp sensor device are surveyed pass through the incoming background monitoring of GPRS communication mode through remote terminal, and are sent misoperation alarm, notice of sending short messages operation maintenance personnel by background system.
The background system of described device is computer system or microprocessor.
High tension cable failure monitoring device on-line monitoring cable methods of the present invention is as follows:
Utilize high tension cable fault monitoring device on-line monitoring cable grounding of the present invention and short circuit, broken string situation, compare failure judgement classification according to the current measuring device operating condition of cable both sides.
Singlephase earth fault, is that cable head occurs that electric current increases suddenly when there is singlephase earth fault one, and cable end piece electric current is constant；Two is that cable head occurs that electric current increases suddenly, and cable end piece electric current is zero, three be cable head be zero, inversely increasing occurs in end current.
Two-phase cable short trouble, when there is two-phase cable short circuit, head end occurs that electric current increases suddenly, and cable end piece electric current is zero.Cable single-phase wire break fault, when there is cable single-phase wire break fault, cable head is zero, and end current is zero.
Cable fault carries out calculating and the classification of multilevel iudge fault by above-mentioned technical method, and data are through remote terminal by the incoming background monitoring of GPRS communication mode, and fault alerts in time, notice of sending short messages operation maintenance personnel.
The invention has the beneficial effects as follows, the inventive method practical, apparatus structure is simple, only need curent change and the variations in temperature of Monitoring High Voltage Cable first and last end, just the fault of cable can be judged, and breakdown judge is accurate, fault data can pass through the incoming backstage of radio communication in time, and notifies attendant by the mode sent short messages.
The present invention is applicable to the malfunction monitoring of high tension cable.
Accompanying drawing explanation
Fig. 1 is high tension cable failure monitoring system schematic diagram of the present invention；
Fig. 2 is cable earth fault current direction schematic diagram；
Fig. 3 is cable two-phase short-circuit fault current direction schematic diagram；
Figure number in figure: 1 is head end cable current, temperature measuring equipment and remote terminal；2 is end cable electric current, temperature measuring equipment；3 is radio communication；4 is GPRS radio communication；5 is SMS；6 is background system；7 is cable run；I0It it is earth current；I1It it is head end electric current；I2It it is end current；I1BIt it is B phase head end electric current；I2BIt it is B phase end current；I1CIt it is C phase head end electric current；I2CIt it is C phase end current；IDIt it is short circuit current.
Detailed description of the invention
The specific embodiment of the invention is as follows.
Cable current measurement apparatus, temperature measuring equipment and the remote terminal unit of the present invention are separately mounted to cable head and end, on-line monitoring cable grounding and short circuit, broken string situation, utilize the current measuring device operating condition of cable both sides to compare failure judgement classification.
Singlephase earth fault, as shown in Figure 2.When there is singlephase earth fault (such as A phase), in fact it could happen that three kinds of situations:
(1) there is electric current I in cable head1Suddenly increase, cable end piece electric current I2Constant；
(2) there is electric current I in cable head1Suddenly increase, cable end piece electric current I2It is zero；
(3) cable head I1It is zero, end current I2Appearance inversely increases.
Above-mentioned three kinds of situations, all can be judged by the curent change of monitoring cable first and last end or variations in temperature.
Two-phase cable short trouble, as shown in Figure 3.When there is two-phase cable short circuit (as being short-circuited between B phase with C phase), there is electric current I in head end1BAnd I1CSuddenly increase, cable end piece electric current I2BAnd I2CIt is zero.
Cable single-phase wire break fault, when there is cable single-phase wire break fault, that phase head end electric current of cable cut line is zero, and the end current of that phase is zero.
Cable fault is calculated by above-mentioned technical method and compares, can determine whether the classification of fault, electric current and the temperature data of monitoring pass through the incoming background monitoring of GPRS communication mode through remote terminal, the data that background system is monitored through com-parison and analysis, send misoperation warning signal, concurrent SMS notification operation maintenance personnel in time.
Claims (2)
1. a high tension cable fault monitoring method, it is characterised in that described method is according to the electricity of cable both sides
Flow measuring apparatus operating condition compares failure judgement classification, online by high tension cable fault monitoring device
Monitoring cable grounding and short circuit, broken string situation:
(1) singlephase earth fault, is that cable head occurs that electric current increases suddenly when there is singlephase earth fault one
Greatly, cable end piece electric current is constant；Two is that cable head occurs that electric current increases suddenly, and cable end piece electric current is zero,
Three be cable head be zero, inversely increasing occurs in end current；
(2) two-phase cable short trouble, when there is two-phase cable short circuit, head end occurs that electric current increases suddenly,
Cable end piece electric current is zero；
(3) cable single-phase wire break fault, when there is cable single-phase wire break fault, cable head is zero, end
End electric current is zero；
Described high tension cable fault monitoring device includes current measuring device, temp sensor device and remotely eventually
End, background system；It is first that head end current measuring device, head end temperature sensor and remote terminal are arranged on cable
End；End current measurement apparatus and terminal temperature sensor are arranged on cable end piece；Current measuring device and temperature
The degree data surveyed of sensor device through remote terminal by the incoming background monitoring of GPRS communication mode, and by
Background system sends misoperation warning signal；Concurrent SMS notification operation maintenance personnel.
A kind of high tension cable fault monitoring method, it is characterised in that described
Background system is computer system or microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310481036.1A CN103529348B (en) | 2013-10-15 | 2013-10-15 | A kind of high tension cable fault monitoring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310481036.1A CN103529348B (en) | 2013-10-15 | 2013-10-15 | A kind of high tension cable fault monitoring method |
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| Publication Number | Publication Date |
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| CN103529348A CN103529348A (en) | 2014-01-22 |
| CN103529348B true CN103529348B (en) | 2016-08-10 |
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| CN201310481036.1A Expired - Fee Related CN103529348B (en) | 2013-10-15 | 2013-10-15 | A kind of high tension cable fault monitoring method |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021871B (en) * | 2014-04-17 | 2017-04-05 | 国家电网公司 | Under a kind of imperfect information, cable run Leakage Current determines method |
| CN106443302B (en) * | 2016-11-02 | 2019-09-06 | 龙滩水电开发有限公司龙滩水力发电厂 | A kind of safe lookup method of large-sized water turbine generator Stator ground fault |
| CN107831388B (en) * | 2017-11-03 | 2020-01-07 | 广州供电局有限公司 | Method and system for identifying overload of cluster 10kV cable line |
| JP7042597B2 (en) | 2017-12-04 | 2022-03-28 | 株式会社東芝 | Vehicle control device and electric vehicle |
| CN109490710A (en) * | 2018-11-23 | 2019-03-19 | 中国二十二冶集团有限公司 | The method for searching aluminium cable breakpoint |
| CN113092942A (en) * | 2021-04-09 | 2021-07-09 | 山西转型综改示范区有线网络有限公司 | Visual monitoring system for urban weak current cable |
| CN115469189A (en) * | 2022-10-10 | 2022-12-13 | 国网上海市电力公司 | Cable sheath fault judgment method based on sheath head-end current ratio and sheath circulation ratio |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611196A (en) * | 2011-08-16 | 2012-07-25 | 中国人民解放军军事交通学院 | 10KV power grid state monitoring and fault process automation system |
| CN102981102A (en) * | 2012-11-14 | 2013-03-20 | 天津市翔晟远电力设备实业有限公司 | Novel ring main unit state monitoring system |
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2013
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611196A (en) * | 2011-08-16 | 2012-07-25 | 中国人民解放军军事交通学院 | 10KV power grid state monitoring and fault process automation system |
| CN102981102A (en) * | 2012-11-14 | 2013-03-20 | 天津市翔晟远电力设备实业有限公司 | Novel ring main unit state monitoring system |
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| CN103529348A (en) | 2014-01-22 |
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