CN102636721A - Ground fault detector for power transmission line - Google Patents

Ground fault detector for power transmission line Download PDF

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Publication number
CN102636721A
CN102636721A CN2012101140185A CN201210114018A CN102636721A CN 102636721 A CN102636721 A CN 102636721A CN 2012101140185 A CN2012101140185 A CN 2012101140185A CN 201210114018 A CN201210114018 A CN 201210114018A CN 102636721 A CN102636721 A CN 102636721A
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CN
China
Prior art keywords
module
fault detector
unit
electrically connected
transmission lines
Prior art date
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.)
Pending
Application number
CN2012101140185A
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Chinese (zh)
Inventor
杨申吉
甄应续
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MENGZHOU ELECTRIC POWER CO Ltd
State Grid Corp of China SGCC
Original Assignee
MENGZHOU ELECTRIC POWER CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MENGZHOU ELECTRIC POWER CO Ltd filed Critical MENGZHOU ELECTRIC POWER CO Ltd
Priority to CN2012101140185A priority Critical patent/CN102636721A/en
Publication of CN102636721A publication Critical patent/CN102636721A/en
Pending legal-status Critical Current

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    • 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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  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Locating Faults (AREA)

Abstract

The invention discloses a ground fault detector for a power transmission line. The ground fault detector comprises a shell, an operation panel, a high-voltage line, a ground line and a master control circuit, wherein the master control circuit is composed of a power module, a switch, a potentiometer, a D/A (Digital/Analogue) inverter module, a positive binding post, a negative binding post, a detecting module, an output module, a display module and an alarm module; the power module, the switch, the potentiometer and the D/A inverter module are electrically connected with one another; the positive binding post and the negative binding post are both electrically connected with the output module; the detecting module and the output module are both electrically connected with the D/A inverter module; the alarm module and the display module are both electrically connected with the detecting module; the operation panel is connected with the shell; all the switch, the potentiometer, the positive binding post, the negative binding post and the display module are embedded in the upper surface of the operation panel; the high-voltage line is connected with the positive binding post through a bolt; and the ground line is connected with the negative binding post through the bolt. The ground fault detector for the power transmission line is simple in structure, stable in running and high in precision; and the fault diagnosis efficiency and the safety insurance of operators are greatly improved.

Description

A kind of transmission lines earth fault detector
Technical field
The present invention relates to a kind of transmission lines earth fault detector, belong to electricity consumption service technique field.
Background technology
In transmission line malfunction; Especially in the fault of mesohigh transmission line of electricity; Transmission line of electricity causes earth fault the most common because of Insulation Problems, and the long and disguised height in trouble spot does not still have effective testing tool in addition at present by transmission line of electricity; Definite and eliminating to transmission lines earth fault point has caused great difficulty; And since during many fault detects transmission line of electricity be that operating personnel are the states that are in hot line job, operating personnel's Danger Electric shock risk feelings are bigger, therefore press at present a kind of can be quickly and easily to the transmission lines earth fault point location and can effectively reduce the get an electric shock equipment of risk of operating personnel.
Summary of the invention
The object of the invention just is to overcome above-mentioned deficiency, and a kind of transmission lines earth fault detector is provided.
For realizing above-mentioned purpose, the present invention realizes through following technical scheme:
A kind of transmission lines earth fault detector; Described transmission lines earth fault detector is made up of housing, guidance panel, hi-line, ground wire and governor circuit; Described governor circuit is made up of power module, switch, potentiometer, D/A inversion module, positive terminal, negative terminal, detection module, output module, display module and alarm module; Power module, switch, potentiometer and D/A inversion module are electrically connected, and positive terminal and negative terminal all are electrically connected with output module, and detection module and output module all are electrically connected with the D/A inversion module; Alarm module and display module all are electrically connected with detection module; Described guidance panel reliably is connected with housing, and viewing area and zone of alarm are set on the guidance panel, and switch, potentiometer, positive terminal, negative terminal and display module all are embedded in the guidance panel upper surface; Described hi-line is connected through bolt with positive terminal, and ground wire is connected through bolt with negative terminal.
Detection module is made up of boosting unit, filter unit, driver element, main control unit, high voltage detecting unit, DC voltage detecting unit and direct current detection unit; Wherein filter unit is electrically connected with boosting unit, driver element, main control unit, high voltage detecting unit, DC voltage detecting unit and direct current detection unit respectively, and driver element, high voltage detecting unit, DC voltage detecting unit and direct current detection unit are electrically connected with main control unit respectively.
Output module is made up of boosting unit and filter unit, and boosting unit and filter unit are electrically connected.
Display module is that pointer high-tension voltmeter, D.C. voltmeter and DC ammeter constitute.
Display module is that digital high-tension voltmeter, D.C. voltmeter and DC ammeter constitute.
Display module is the integral type LCD.
Alarm module is hummer, acousto-optic hummer or electric whistle.
Housing, guidance panel, hi-line, the ground wire class of insulation are not less than 0.6/1KV.
The present invention has following beneficial effect:
1, device structure is simply light, is convenient under various occasions, use.
2, operation of equipment is simple and stable precision high, has effectively saved transmission lines earth fault detection time, has reduced maintenance job intensity, has improved work efficiency.
3, apparatus insulated grade is high, has improved personnel's personal safety guarantee in the Earth Fault Detection greatly.
Description of drawings
Fig. 1 is a master control borad electrical principle block diagram
Fig. 2 is a detection module electrical principle block diagram
Fig. 3 is an output module electrical principle block diagram
Fig. 4 is the guidance panel synoptic diagram.
Embodiment
Like Fig. 1,2, shown in 3 and 4; A kind of transmission lines earth fault detector; Described transmission lines earth fault detector is made up of housing 1, guidance panel 2, hi-line 3, ground wire 4 and governor circuit; Described governor circuit is made up of power module, switch 5, potentiometer 6, D/A inversion module, positive terminal 7, negative terminal 8, detection module, output module, display module and alarm module; Power module, switch 7, potentiometer 8 and D/A inversion module are electrically connected, and positive terminal 7 and negative terminal 8 all are electrically connected with output module, and detection module and output module all are electrically connected with the D/A inversion module; Alarm module and display module all are electrically connected with detection module; Described guidance panel 2 reliably is connected with housing 1, and viewing area 9 and zone of alarm 10 are set on the guidance panel 2, and switch 5, potentiometer 6, positive terminal 7, negative terminal 8 and display module all are embedded in guidance panel 2 upper surfaces; Described hi-line 3 and positive terminal 7 are connected through bolt, and ground wire 4 and negative terminal 8 are connected through bolt.
Detection module is made up of boosting unit, filter unit, driver element, main control unit, high voltage detecting unit, DC voltage detecting unit and direct current detection unit; Wherein filter unit is electrically connected with boosting unit, driver element, main control unit, high voltage detecting unit, DC voltage detecting unit and direct current detection unit respectively, and driver element, high voltage detecting unit, DC voltage detecting unit and direct current detection unit are electrically connected with main control unit respectively.
Output module is made up of boosting unit and filter unit, and boosting unit and filter unit are electrically connected.
During use, faulty line outage at first to be detected, ground wire reliable ground of the present invention then; Again hi-line reliably is connected with insulation rod, and hi-line and faulty line to be detected is touched, when really fault being arranged as if faulty line to be detected through insulation rod; Alarm module of the present invention is reported to the police; Display module descends the display voltage value, and current value rises, thereby can judge the position of trouble spot.
Before using the present invention, operating personnel must handle the power failure formality according to flow process, and must have at least two people simultaneously on the scene, and operating personnel can operate after also should carrying out self insulating protection, handle according to program after pending fault detects and finishes again and send electric hand continuous.

Claims (8)

1. transmission lines earth fault detector; It is characterized in that: described transmission lines earth fault detector is made up of housing, guidance panel, hi-line, ground wire and governor circuit; Described governor circuit is made up of power module, switch, potentiometer, D/A inversion module, positive terminal, negative terminal, detection module, output module, display module and alarm module; Power module, switch, potentiometer and D/A inversion module are electrically connected; Positive terminal and negative terminal all are electrically connected with output module; Detection module and output module all are electrically connected with the D/A inversion module, and alarm module and display module all are electrically connected with detection module, and described guidance panel reliably is connected with housing; Viewing area and zone of alarm are set on the guidance panel; And switch, potentiometer, positive terminal, negative terminal and display module all are embedded in the guidance panel upper surface, and described hi-line is connected through bolt with positive terminal, and ground wire is connected through bolt with negative terminal.
2. a kind of transmission lines earth fault detector according to claim 1; It is characterized in that: described detection module is made up of boosting unit, filter unit, driver element, main control unit, high voltage detecting unit, DC voltage detecting unit and direct current detection unit; Wherein filter unit is electrically connected with boosting unit, driver element, main control unit, high voltage detecting unit, DC voltage detecting unit and direct current detection unit respectively, and driver element, high voltage detecting unit, DC voltage detecting unit and direct current detection unit are electrically connected with main control unit respectively.
3. a kind of transmission lines earth fault detector according to claim 1, it is characterized in that: described output module is made up of boosting unit and filter unit, and boosting unit and filter unit are electrically connected.
4. a kind of transmission lines earth fault detector according to claim 1 is characterized in that: described display module is that pointer high-tension voltmeter, D.C. voltmeter and DC ammeter constitute.
5. a kind of transmission lines earth fault detector according to claim 1 is characterized in that: described display module is that digital high-tension voltmeter, D.C. voltmeter and DC ammeter constitute.
6. a kind of transmission lines earth fault detector according to claim 1 is characterized in that: described display module is the integral type LCD.
7. a kind of transmission lines earth fault detector according to claim 1 is characterized in that: described alarm module is hummer, acousto-optic hummer or electric whistle.
8. a kind of transmission lines earth fault detector according to claim 1 is characterized in that: described housing, guidance panel, hi-line, the ground wire class of insulation are not less than 0.6/1KV.
CN2012101140185A 2012-04-18 2012-04-18 Ground fault detector for power transmission line Pending CN102636721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012101140185A CN102636721A (en) 2012-04-18 2012-04-18 Ground fault detector for power transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012101140185A CN102636721A (en) 2012-04-18 2012-04-18 Ground fault detector for power transmission line

Publications (1)

Publication Number Publication Date
CN102636721A true CN102636721A (en) 2012-08-15

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104769447A (en) * 2012-09-06 2015-07-08 阿尔斯通技术有限公司 Electrode line monitoring unit
CN105021937A (en) * 2014-04-28 2015-11-04 苏州华天国科电力科技有限公司 Detector for temporary grounding wire of 10kV high-voltage line
CN106019049A (en) * 2016-05-19 2016-10-12 国网新疆电力公司伊犁供电公司 Auxiliary device for DC grounding search of transformer station
CN106646119A (en) * 2016-11-24 2017-05-10 国网山东省电力公司成武县供电公司 Ground fault search instrument, and ground fault point search method and system
CN106707083A (en) * 2016-12-28 2017-05-24 国家电网公司 Substation direct current grounding detecting device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5530363A (en) * 1994-10-31 1996-06-25 John Gaughan DC ground fault detecting apparatus with an auto-null circuit and method
CN2624216Y (en) * 2003-03-04 2004-07-07 冯占国 Automatic earth fault dectector for highvoltage line
CN2816827Y (en) * 2005-08-04 2006-09-13 余凯 Short circuit and earth fault indicator voltage type tester
CN201096855Y (en) * 2007-07-20 2008-08-06 周学军 Online tester for single-phase grounding failure of portable power cable
JP2011064534A (en) * 2009-09-16 2011-03-31 Chubu Electric Power Co Inc Ground fault detection apparatus
CN202066934U (en) * 2011-05-09 2011-12-07 航天科工深圳(集团)有限公司 Single phase earth fault positioning system of transmission line
CN202583391U (en) * 2012-04-18 2012-12-05 孟州市电力公司 Transmission line grounding fault detection instrument

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5530363A (en) * 1994-10-31 1996-06-25 John Gaughan DC ground fault detecting apparatus with an auto-null circuit and method
CN2624216Y (en) * 2003-03-04 2004-07-07 冯占国 Automatic earth fault dectector for highvoltage line
CN2816827Y (en) * 2005-08-04 2006-09-13 余凯 Short circuit and earth fault indicator voltage type tester
CN201096855Y (en) * 2007-07-20 2008-08-06 周学军 Online tester for single-phase grounding failure of portable power cable
JP2011064534A (en) * 2009-09-16 2011-03-31 Chubu Electric Power Co Inc Ground fault detection apparatus
CN202066934U (en) * 2011-05-09 2011-12-07 航天科工深圳(集团)有限公司 Single phase earth fault positioning system of transmission line
CN202583391U (en) * 2012-04-18 2012-12-05 孟州市电力公司 Transmission line grounding fault detection instrument

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* Cited by examiner, † Cited by third party
Title
李盛林: "配电线路故障测距装置的研制", 《万方学位论文全文数据库》 *
胡军 等: "一种电力线路智能故障检测仪的设计", 《仪器仪表学报》 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104769447A (en) * 2012-09-06 2015-07-08 阿尔斯通技术有限公司 Electrode line monitoring unit
CN105021937A (en) * 2014-04-28 2015-11-04 苏州华天国科电力科技有限公司 Detector for temporary grounding wire of 10kV high-voltage line
CN106019049A (en) * 2016-05-19 2016-10-12 国网新疆电力公司伊犁供电公司 Auxiliary device for DC grounding search of transformer station
CN106646119A (en) * 2016-11-24 2017-05-10 国网山东省电力公司成武县供电公司 Ground fault search instrument, and ground fault point search method and system
CN106646119B (en) * 2016-11-24 2019-05-10 国网山东省电力公司成武县供电公司 Earth fault searches instrument, earth fault lookup method and system
CN106707083A (en) * 2016-12-28 2017-05-24 国家电网公司 Substation direct current grounding detecting device

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C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
ASS Succession or assignment of patent right

Owner name: STATE GRID CORPORATION OF CHINA

Effective date: 20121213

C41 Transfer of patent application or patent right or utility model
TA01 Transfer of patent application right

Effective date of registration: 20121213

Address after: 454750 No. 10 Han Yu street, Mengzhou, Henan, Jiaozuo

Applicant after: Mengzhou Electric Power Co., Ltd.

Applicant after: State Grid Corporation of China

Address before: 454750 No. 10 Han Yu street, Mengzhou, Henan, Jiaozuo

Applicant before: Mengzhou Electric Power Co., Ltd.

C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20120815