CN202041611U - Fault indicator for ground fault automatic locating device of power transmission line - Google Patents
Fault indicator for ground fault automatic locating device of power transmission line Download PDFInfo
- Publication number
- CN202041611U CN202041611U CN 201120121094 CN201120121094U CN202041611U CN 202041611 U CN202041611 U CN 202041611U CN 201120121094 CN201120121094 CN 201120121094 CN 201120121094 U CN201120121094 U CN 201120121094U CN 202041611 U CN202041611 U CN 202041611U
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- China
- Prior art keywords
- transmission line
- fault
- electricity
- electromagnetic induction
- control module
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
Abstract
The utility model relates to a fault indicator for a ground fault automatic locating device of a power transmission line. The locating device comprises a signal source device, a plurality of fault indicators, a plurality of aerial substations and an information processing center system. The signal source device is connected with the bus side of a main transformer, the plurality of fault indicators are hung on each phase bus at the position of each node of each power transmission line respectively. The aerial substations are arranged at the position of each node of each power transmission line respectively. The signal source device feeds back a pulse current signal to the bus side of the main transformer. The fault indicator comprises an electromagnetic induction device, a detection control module and an antenna communication device. The electromagnetic induction device is used for receiving the pulse current signal, the detection control module is connected with the electromagnetic induction device, and the antenna communication device is connected with the detection control module and used for connecting and communicating with the aerial substations. Line equipment types and quantities are reduced, and redevelopment of the detecting device inside the fault automatic locating device is avoided, thereby greatly saving cost.
Description
Technical field
The utility model relates to a kind of fault detector that is used for the transmission lines earth fault automatic positioning equipment.
Background technology
As everyone knows, because the influence of disaster or other factors, transmission line of electricity suffers damage unavoidably and earth fault occurs, earth fault occurs especially easily on middle and high pressure overhead transmission line, and wherein modal fault is the overhead transmission line single-phase earthing.For this type of fault, the maintainer generally is the position of distinguishing the earth point of earth fault by the voltage of detection line; When seeking earth point, can arrange personnel to check along the line for short overhead transmission line comprehensively; But when seeking earth point for long overhead transmission line, should adopt optimum seeking method to carry out, promptly at first the strain insulator bar at 1/2 place of line length carries out segmentation, take the drainage thread of circuit three-phase respectively apart, make whole circuit be divided into two sections, measure the insulation resistance of three-phase conducting wire then respectively with the 2500V megohmmeter, can distinguish certain section ground connection or two sections equal ground connection of circuit according to measurement result, secondly continue segment lookup according to judged result, progressively dwindle seek scope, treat that the ground connection scope narrows down to a certain degree, can arrange personnel to check along the line comprehensively.
Yet no matter above-mentioned is comprehensive inspection technique, or optimum seeking method, all needs the maintainer to expend a large amount of time and efforts, and work efficiency is extremely low.Therefore, the insider has researched and developed a kind of line fault automatic positioning equipment to address the above problem.The principle of work of this line fault automatic positioning equipment is when transmission line of electricity generation singlephase earth fault, insert a middle resistance in short-term at transforming plant main transformer depressor bus neutral point, to produce a bigger ground current signal, and by being installed in the checkout equipment on the pole line, detect this current signal, thereby reach the purpose of fault detect and location.
Above-mentioned checkout equipment can independent design and is directly installed on the necessary position of pole line, and need not to consider original line facility, but problems such as the R﹠D work amount is big, funds are big, cost height that this is with regard to having caused also become the problem that the insider presses for solution now.
The utility model content
In order to solve the problem that above-mentioned prior art exists, the utility model aims to provide a kind of fault detector that is used for the transmission lines earth fault automatic positioning equipment, with under the prerequisite of the job requirement of satisfying automatic trouble locating arrangement, effectively reduces manufacturing cost.
A kind of fault detector that is used for the transmission lines earth fault automatic positioning equipment described in the utility model, described transmission line of electricity is connected transforming plant main transformer depressor outlet side, every transmission line of electricity is made of the three-phase bus, and every transmission line of electricity is provided with plurality of nodes, described locating device comprises that one is connected the signal source equipment of described main-transformer bus bar side, several are articulated in the fault detector on every phase bus at each node place of described every transmission line of electricity respectively, several are separately positioned on the built on stilts substation and a system of information processing centre at each node place of described every transmission line of electricity, wherein, described signal source equipment feeds back a pulsating current signal to the main-transformer bus bar side, and described fault detector comprises that one is used to receive the electromagnetic induction device of described pulsating current signal, the one detection control module that is connected with this electromagnetic induction device is that be connected with this detection control module with one and be used for the antenna communication device that is connected with described built on stilts substation communication.
Owing to adopted above-mentioned technical solution, the utility model is a kind of improvement to existing fault display on the transmission line of electricity, promptly increase an electromagnetic induction device that is used for the pulsating current signal that the induced signal source device sends, and supporting employing detects control module, utilize this module to trigger the antenna communication device and outwards export this location of fault information, thereby realized detection and location faulty line with wireless communication mode.The utility model has reduced line facility kind and quantity, has avoided the R﹠D work again of checkout equipment in the automatic trouble locating arrangement, provides cost savings greatly.
Description of drawings
Fig. 1 is a kind of structural representation that is used for the fault detector of transmission lines earth fault automatic positioning equipment of the utility model;
Fig. 2 is a kind of scheme of installation that is used for the fault detector of transmission lines earth fault automatic positioning equipment of the utility model.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.
See also Fig. 1, Fig. 2, transmission line of electricity 6 is connected transforming plant main transformer depressor 5 outlet sides, and every transmission line of electricity 6 is made of the three-phase bus, and every transmission line of electricity 6 is provided with plurality of nodes.The transmission lines earth fault automatic positioning equipment comprises the fault detector 2 on every phase bus at a signal source equipment 1 that is connected main-transformer 5 bus bar side, several each node places that is articulated in every transmission line of electricity 6 respectively, the built on stilts substation 3 and a system of information processing centre 4 at several each node places that is separately positioned on every transmission line of electricity 6, wherein, signal source equipment 1 is used for feeding back a pulsating current signal to main-transformer 5 bus bar side
The utility model, be a kind of fault detector 2 that is used for the transmission lines earth fault automatic positioning equipment, it comprise an electromagnetic induction device 21 that is used to receive the pulsating current signal, a detection control module 22 that is connected with electromagnetic induction device 21 with one with to detect control module 22 that be connected and be used for being connected antenna communication device 23 with 3 wireless telecommunications of built on stilts substation.
Principle of work of the present utility model is as follows:
When a singlephase earth fault appearred in transmission line of electricity 6, offset voltage can appear in main-transformer 5 bus neutral points 50, and at this moment, signal source equipment 1 can feed back a pulsating current signal to main-transformer 5 bus bar side.Though this pulsating current signal can be passed to every phase bus of transmission line of electricity 6 via main-transformer 5, but because the loop only can form between the earth fault of transmission line of electricity 6 and the earth, therefore, the fault detector 2 that only is articulated on the single-phase transmission line of electricity 6 that earth fault takes place just can detect this pulsating current signal, and be articulated in the fault detector 2 on other single-phase transmission line of electricity 6 that earth fault do not occur because do not form the loop, therefore can't detect this signal; Fault detector 2 of the present utility model is according to this principle of work, can determine that the single-phase bus of earth fault takes place transmission line of electricity 6, and, therefore, can accurately locate the concrete trouble spot of single-phase bus because each node place on every phase bus is equipped with fault detector 2.Fault detector 2 of the present utility model utilizes electromagnetic induction principle, and promptly electromagnetic induction device 21 detects the pulsating current signal on the transmission lines of electricity 6, and does not directly contact with core, thereby has avoided because of flowing through the phenomenon that big electric current is damaged; After detection control module 22 receives the fault-signal of electromagnetic induction device 21 outputs, carry out the processing of failure message, and trigger antenna communication device 23 and outwards export this location of fault information with wireless communication mode, and final mobile phone or the watch-dog 7 that is sent to the operations staff by system of information processing centre 4 with the note form, thereby make the operations staff can grasp the security situation of transmission line of electricity in time, exactly, save the repairing time, increase work efficiency.
In the present embodiment, what electromagnetic induction device 21 adopted is the 16F630 chip that Microchip Technology produces, what detect control module 22 employings is 16 little process chip that light section far away electricity (Beijing) Science and Technology Ltd. produces, and what antenna communication device 23 adopted is TR24A type wireless communication module.
Below embodiment has been described in detail the utility model in conjunction with the accompanying drawings, and those skilled in the art can make the many variations example to the utility model according to the above description.Thereby some details among the embodiment should not constitute qualification of the present utility model, and the scope that the utility model will define with appended claims is as protection domain of the present utility model.
Claims (1)
1. fault detector that is used for the transmission lines earth fault automatic positioning equipment, described transmission line of electricity is connected transforming plant main transformer depressor outlet side, every transmission line of electricity is made of the three-phase bus, and every transmission line of electricity is provided with plurality of nodes, described locating device comprises that one is connected the signal source equipment of described main-transformer bus bar side, several are articulated in the fault detector on every phase bus at each node place of described every transmission line of electricity respectively, several are separately positioned on the built on stilts substation and a system of information processing centre at each node place of described every transmission line of electricity, wherein, described signal source equipment feeds back a pulsating current signal to the main-transformer bus bar side, it is characterized in that described fault detector comprises that one is used to receive the electromagnetic induction device of described pulsating current signal, the one detection control module that is connected with this electromagnetic induction device is that be connected with this detection control module with one and be used for the antenna communication device that is connected with described built on stilts substation communication.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120121094 CN202041611U (en) | 2011-04-22 | 2011-04-22 | Fault indicator for ground fault automatic locating device of power transmission line |
| PCT/CN2011/079167 WO2012142808A1 (en) | 2011-04-22 | 2011-08-31 | Fault display for use in electric power transmission line ground fault auto-positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120121094 CN202041611U (en) | 2011-04-22 | 2011-04-22 | Fault indicator for ground fault automatic locating device of power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202041611U true CN202041611U (en) | 2011-11-16 |
Family
ID=44969049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120121094 Expired - Fee Related CN202041611U (en) | 2011-04-22 | 2011-04-22 | Fault indicator for ground fault automatic locating device of power transmission line |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202041611U (en) |
| WO (1) | WO2012142808A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244837A (en) * | 2015-11-16 | 2016-01-13 | 国家电网公司 | Cable connecting device and monitoring system thereof |
| CN105261894A (en) * | 2015-10-28 | 2016-01-20 | 崔子扬 | Cable connection device and monitoring system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676064A (en) * | 2016-01-12 | 2016-06-15 | 国网浙江省电力公司嘉兴供电公司 | User-side leakage current monitoring method and system |
| CN106054026A (en) * | 2016-07-25 | 2016-10-26 | 常州市拓源电缆成套有限公司 | Cable signal channel detection device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207500A (en) * | 1998-08-26 | 1999-02-10 | 北京英康通用电力技术有限公司 | Method and system for detecting failure in distribution network |
| EP2019969A2 (en) * | 2006-05-19 | 2009-02-04 | Schweitzer Engineering Laboratories, Inc. | User interface for monitoring a plurality of faulted circuit indicators |
| CN101446619B (en) * | 2008-12-05 | 2011-03-30 | 上海艾晋电力科技有限公司 | Alarm for detecting faults of overhead lines of distribution network |
| CN201314942Y (en) * | 2008-12-05 | 2009-09-23 | 上海市电力公司 | Monitoring system for detecting the fault of distribution network trolly wires |
| CN201788253U (en) * | 2010-08-19 | 2011-04-06 | 河南省电力公司郑州供电公司 | Fault location system for distribution lines |
-
2011
- 2011-04-22 CN CN 201120121094 patent/CN202041611U/en not_active Expired - Fee Related
- 2011-08-31 WO PCT/CN2011/079167 patent/WO2012142808A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261894A (en) * | 2015-10-28 | 2016-01-20 | 崔子扬 | Cable connection device and monitoring system |
| CN105244837A (en) * | 2015-11-16 | 2016-01-13 | 国家电网公司 | Cable connecting device and monitoring system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012142808A1 (en) | 2012-10-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20190422 |