CN107643462A - Novel short circuit device for fault indicator - Google Patents
Novel short circuit device for fault indicator Download PDFInfo
- Publication number
- CN107643462A CN107643462A CN201610594161.7A CN201610594161A CN107643462A CN 107643462 A CN107643462 A CN 107643462A CN 201610594161 A CN201610594161 A CN 201610594161A CN 107643462 A CN107643462 A CN 107643462A
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- China
- Prior art keywords
- circuit
- short circuit
- current
- iron
- magnetic circuit
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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.)
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Abstract
The present invention relates to a kind of novel short circuit device for fault indicator, including nylon cable tie, nylon cable tie button, fibre-optical splice, current measuring device；Conventional short-circuit indicating fault measures short circuit current using closed magnetic circuit mode, the easy saturation of magnetic circuit so be present, easily cause magnetic circuit iron core generate heat and vibration, and by magnetic circuit limit to install cable diameter have strict limitation；Present apparatus magnetic circuit uses non-closed magnetic circuit, short circuit current scope can arbitrarily be set between 630 10000A, on tested cable, fixation uses nylon cable tie, can not be limited by cable diameter, it is fixedly mounted using nylon cable tie compared with traditional pig iron closed magnetic circuit is installed, magnetic circuit will not saturation, vibration will not be produced, and cheap, it is easy to promote, adaptability is stronger.
Description
Technical field
The present invention relates to a kind of novel short circuit device for fault indicator, it is possible to achieve to short trouble carry out in real time detection and
Judge.
Background technology
In looped network distribution system, in particularly a large amount of systems using ring net load switch, if next stage power distribution network
There occurs line short fault in network system, the electric power system of upper level must carry out failture evacuation within the defined time, extensive
Telegram in reply net power supply, the short circuit grounding indicating fault equipped with measurement three-phase load function of current is had to for this looped network distribution system
Device, conventional short-circuit indicating fault measure short circuit current using closed magnetic circuit mode, the easy saturation of magnetic circuit so be present, easily cause
Magnetic circuit iron core generates heat and vibration, and limit by magnetic circuit and have strict limitation to installation cable diameter, be this present invention propose it is a kind of newly
Type display device for short circuit device, short trouble can be carried out to detect and judge in real time.
The content of the invention
The technical problems to be solved by the invention are how to realize and realize relative broad range short trouble using non-closed magnetic circuit
Detection.
In order to solve the above technical problems, a kind of novel short circuit device for fault indicator of present invention offer, including nylon cable tie,
Nylon cable tie button, fibre-optical splice, current measuring device；Nylon cable tie, nylon cable tie button, fibre-optical splice are each attached to current measurement
On crust of the device.
Current measuring device includes iron core, iron-core coil, rectification circuit, comparator and current reference regulation circuit, lighted
Pipe circuit；Iron-core coil is wrapped on iron core；Two terminals of iron-core coil are connected to the input of rectification circuit；Rectification circuit
Output end and comparator circuit input connect；The output end of comparator circuit is connected with luminous tube circuit input end；Electricity
Flow measuring apparatus is close to tested cable installation, obtains tested cable current size indirectly using magnetic coupling principle is non-contact, i.e.,
Realize cable short circuit current measurement.
Iron core is cylindrical pure iron material.
Iron-core coil uses enamel-covered wire coiling, is wrapped on iron core, and the number of turns is enclosed for 600-10000, forms open magnetic circuit.
Comparator and current reference regulation circuit can adjust protective current value, protective current value is appointed in 630-10000A
Meaning adjustment.
Luminous tube circuit uses high brightness luminous tube, and luminous tube docks with fibre-optical splice.
Current measuring device is fixed on cable by nylon cable tie, when current measuring device measures cable short circuit current, iron
Core magnetic circuit is non-closed magnetic circuit, in the absence of saturated phenomenon, will not produce vibration.
The positive effect of the present invention is：(1) magnetic circuit uses non-closed magnetic circuit, short circuit current scope can 630-10000A it
Between arbitrarily set.(2) novel short circuit device for fault indicator is arranged on tested cable, and fixation uses nylon cable tie, can not be by
Cable diameter limits, and adaptability is stronger.(3) novel short circuit device for fault indicator is fixedly mounted using nylon cable tie and given birth to tradition
The installation of iron closed magnetic circuit is compared, magnetic circuit will not saturation, vibration will not be produced, and cheap, be easy to promote.
Brief description of the drawings
Fig. 1 is novel short circuit device for fault indicator principle assumption diagram.
Fig. 2 is current measuring device principle assumption diagram.
Embodiment
As shown in Figure 1, a kind of novel short circuit device for fault indicator, including nylon cable tie, nylon cable tie button, optical fiber connect
Head, current measuring device；Nylon cable tie, nylon cable tie button, fibre-optical splice are each attached on current measuring device shell.
As shown in Figure 2, current measuring device includes iron core, iron-core coil, rectification circuit, comparator and current reference tune
Economize on electricity road, luminous tube circuit；Iron-core coil is wrapped on iron core；Two terminals of iron-core coil are connected to the input of rectification circuit
End；The output end of rectification circuit and the input of comparator circuit connect；The output end of comparator circuit and luminous tube circuit are defeated
Enter end connection；Current measuring device is close to tested cable installation, and tested cable is obtained indirectly using magnetic coupling principle is non-contact
Size of current, that is, realize cable short circuit current measurement.
Iron core is cylindrical pure iron material.
Iron-core coil uses enamel-covered wire coiling, is wrapped on iron core, and the number of turns is enclosed for 600-10000, forms open magnetic circuit.
Comparator and current reference regulation circuit can adjust protective current value, protective current value is appointed in 630-10000A
Meaning adjustment.
Luminous tube circuit uses high brightness luminous tube, and luminous tube docks with fibre-optical splice.Current measuring device is pricked by nylon
Band is fixed on cable, and when current measuring device measures cable short circuit current, iron circuit is non-closed magnetic circuit, in the absence of saturation
Phenomenon, vibration will not be produced.
Claims (7)
1. novel short circuit device for fault indicator, it is characterized in that：Surveyed including nylon cable tie, nylon cable tie button, fibre-optical splice, electric current
Measure device；Nylon cable tie, nylon cable tie button, fibre-optical splice are each attached on current measuring device shell.
2. novel short circuit device for fault indicator according to claim 1, it is characterized in that：Current measuring device includes iron
Core, iron-core coil, rectification circuit, comparator and current reference regulation circuit, luminous tube circuit；Iron-core coil is wrapped in iron core
On；Two terminals of iron-core coil are connected to the input of rectification circuit；The output end of rectification circuit and comparator circuit it is defeated
Enter end connection；The output end of comparator circuit is connected with luminous tube circuit input end；Current measuring device is close to tested cable peace
Dress, tested cable current size is obtained indirectly using magnetic coupling principle is non-contact, that is, realizes cable short circuit current measurement.
3. novel short circuit device for fault indicator according to claim 2, it is characterized in that：Iron core is cylindrical pure iron material
Material.
4. novel short circuit device for fault indicator according to claim 2, it is characterized in that：Iron-core coil using enamel-covered wire around
System, is wrapped on iron core, and the number of turns is enclosed for 600-10000, forms open magnetic circuit.
5. novel short circuit device for fault indicator according to claim 2, it is characterized in that：Comparator and current reference regulation
Circuit can adjust protective current value, protective current value is arbitrarily adjusted in 630-10000A.
6. according to the novel short circuit device for fault indicator described in claim 1 and 2, it is characterized in that：Luminous tube circuit is using high
Intensity LEDs pipe, luminous tube dock with fibre-optical splice.
7. according to the novel short circuit device for fault indicator described in claim 1 and 2, it is characterized in that：Current measuring device is by Buddhist nun
Imperial band is fixed on cable, and when current measuring device measures cable short circuit current, iron circuit is non-closed magnetic circuit, is not present
Saturated phenomenon, vibration will not be produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594161.7A CN107643462A (en) | 2016-07-21 | 2016-07-21 | Novel short circuit device for fault indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594161.7A CN107643462A (en) | 2016-07-21 | 2016-07-21 | Novel short circuit device for fault indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107643462A true CN107643462A (en) | 2018-01-30 |
Family
ID=61108656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610594161.7A Pending CN107643462A (en) | 2016-07-21 | 2016-07-21 | Novel short circuit device for fault indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107643462A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469568A (en) * | 2018-06-26 | 2018-08-31 | 桂林电子科技大学 | A kind of detection alarm device and application that oscilloprobe earth clip is short-circuit with circuit board touching |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090187358A1 (en) * | 2008-01-21 | 2009-07-23 | Deaver Sr Brian J | System, Device and Method for Determining Power Line Equipment Degradation |
| CN202196140U (en) * | 2011-07-07 | 2012-04-18 | 天津市申特电力电子厂 | All-fiber transmission line fault indicator and housing |
| CN102426317A (en) * | 2011-08-29 | 2012-04-25 | 北京豪锐达科技有限公司 | Fault detection method of intelligent power grid |
| CN105004968A (en) * | 2015-07-21 | 2015-10-28 | 华北科技学院 | Fault indicator, current measurement correction system and method |
| US20160018455A1 (en) * | 2011-12-28 | 2016-01-21 | Electric Power Research Institute, Inc. | Leakage current sensor for suspension type insulator |
-
2016
- 2016-07-21 CN CN201610594161.7A patent/CN107643462A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090187358A1 (en) * | 2008-01-21 | 2009-07-23 | Deaver Sr Brian J | System, Device and Method for Determining Power Line Equipment Degradation |
| CN202196140U (en) * | 2011-07-07 | 2012-04-18 | 天津市申特电力电子厂 | All-fiber transmission line fault indicator and housing |
| CN102426317A (en) * | 2011-08-29 | 2012-04-25 | 北京豪锐达科技有限公司 | Fault detection method of intelligent power grid |
| US20160018455A1 (en) * | 2011-12-28 | 2016-01-21 | Electric Power Research Institute, Inc. | Leakage current sensor for suspension type insulator |
| CN105004968A (en) * | 2015-07-21 | 2015-10-28 | 华北科技学院 | Fault indicator, current measurement correction system and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469568A (en) * | 2018-06-26 | 2018-08-31 | 桂林电子科技大学 | A kind of detection alarm device and application that oscilloprobe earth clip is short-circuit with circuit board touching |
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Legal Events
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180130 |