CN106645825A - Lightning arrester live-line test overvoltage protection special test wire - Google Patents

Lightning arrester live-line test overvoltage protection special test wire Download PDF

Info

Publication number
CN106645825A
CN106645825A CN201710040797.1A CN201710040797A CN106645825A CN 106645825 A CN106645825 A CN 106645825A CN 201710040797 A CN201710040797 A CN 201710040797A CN 106645825 A CN106645825 A CN 106645825A
Authority
CN
China
Prior art keywords
leakage current
wire
arrester
testing
test
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
CN201710040797.1A
Other languages
Chinese (zh)
Inventor
郭磊
寇晓适
张科
丁国君
董曼玲
王天
王伟
赵磊
李予全
郑含博
邵颖彪
王栋
付海金
蒲兵舰
辛伟峰
王吉
王震宇
马德英
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.)
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Henan Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Henan 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 State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Henan Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201710040797.1A priority Critical patent/CN106645825A/en
Publication of CN106645825A publication Critical patent/CN106645825A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02General constructional details
    • G01R1/06Measuring leads; Measuring probes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections

Abstract

The invention discloses a lightning arrester live-line test overvoltage protection special test wire. The lightning arrester live-line test overvoltage protection special test wire comprises a first lead wire clamp, a second lead wire clamp, a protective gap, a leakage current test inlet wire, a leakage current test outlet wire, a fuse, and a lightning arrester leakage current tester. The first lead wire clamp and the second lead wire clamp are connected with the two ends of the protective gap by wire clamp electric streamlines, and the two ends of the protective gap are connected with the current input end of the lightning arrester leakage current tester respectively by the leakage current test inlet wire and the leakage current test outlet wire. Short circuit of a leakage ammeter of a metal oxide lightning arrester is realized by adopting the upper end lead wire clamp of the leakage ammeter and the tail end grounding wire clamp of the leakage ammeter, and then the leakage current of the interval valve disc of the metal oxide lightning arrester basically passes the inner side of the lightning arrester leakage current tester, and then the value of the leakage current is measured accurately. The lightning arrester live-line test overvoltage protection special test wire has advantages of simplicity, reliability, and abilities of facilitating test wiring and guaranteeing safety of electrical testers during operation to the greatest extent.

Description

A kind of arrester charging test overvoltage protection dedicated testing wire
Technical field
The present invention relates to arrester test over-voltage protection technique field, more particularly to a kind of arrester charging test is excessively electric Pressure protection dedicated testing wire.
Background technology
At present, arrester is one of important protection equipment of guarantee safe operation of power system, is mainly used in restriction system Overvoltage, leakage current is a very important reference index for examining arrester quality.At present operation maintenance personnel in fortune to keeping away The measure that the inspection of thunder device state is the most frequently used is the testing experiment for periodically carrying out the leakage current under arrester running status, The state in fortune arrester is judged by the situation of leakage current.But when carrying out in the leakage current testing of fortune arrester, Due to needing by three sets of test clamps, respectively short circuit three-phase lightning protector leakage current table makes current signal enter test equipment, no There is generation system overvoltage in certain risk, i.e. test process with can avoiding cause the situation of lightning arrestor movement.In measurement When, if a kind of situation is that lightning arrestor movement occurs, and now action current major part passes through from measuring apparatus, if test Fuse is not contained in wire clamp(Being typically designed should contain fuse, but there is also some leakage current of an arrester tester productions The situation of the non-design insurance silk of producer), then action current can moment burn out equipment, in the bad situation of the test equipment earthing of casing Under, tester's personal injury can be caused;Another kind of situation is, if arrester inside valve block has been deteriorated, just to keep away during measurement Thunder device generation action, then the high pressure of arrester can be scurried on bottom leakage ammeter at lead.If leakage current table this moment Lead causes that huge electric stress pulls generation fracture or internal fault causes the action current cannot be from table due to action current Pass through, then even if being provided with fuse in test clamp, at blown fuse temporary protection equipment, but blown fuse End terminal is possible to breakdown fuse silk fracture again still in high potential within the of short duration time on leakage current of an arrester table Cause personal injury.Therefore, to prevent both of these case, need to design a kind of special survey of arrester charging test overvoltage protection Examination line.
The content of the invention
It is an object of the invention to provide a kind of arrester charging test overvoltage protection dedicated testing wire, can be used in gold Arrester inside valve block under running status is carried out under category Oxide Arrester running status using leakage current of an arrester tester The measurement of leakage current.
The technical solution used in the present invention is:
A kind of arrester charging test overvoltage protection dedicated testing wire, including the first lead for being arranged on leakage current table upper end Wire clamp, the second lead wire clamp for being arranged on leakage current table tail end, portable protective gaps, leakage current testing inlet wire, leakage current are surveyed Line, fuse and leakage current of an arrester tester are tried out, described the first lead wire clamp and the second lead wire clamp passes through respectively Wire clamp electric current line is connected with the two ends of portable protective gaps, and the both ends of portable protective gaps by leakage current testing inlet wire and are let out respectively Leakage current test outlet connects the current input terminal of leakage current of an arrester tester, and wherein fuse is located at portable protective gaps and keeps away Between thunder device leakage current tester, it is connected on leakage current testing and enters on line segment.
Described portable protective gaps are ball gap, including sealing epoxy resin overcoat and be fixedly installed on by screw respectively close First fixing bolt and the second fixing bolt at the epoxy resin overcoat two ends of envelope, between the first fixing bolt and the second fixing bolt Gap is arranged.
Described the first fixing bolt and the gap length of the second fixing bolt paper is fuse average melt distance Half.
It is described also to include composite insulation outer coat, the composite insulation outer coat be used to making epoxy resin overcoat and first, Equal closing at the electrical connection of the second fixing bolt, it is to avoid testing crew gets an electric shock.
Described leakage current testing outlet is defeated with leakage current of an arrester tester electric current with leakage current testing inlet wire Enter to hold and be additionally provided with outside junction thermal shrinkable sleeve.
Described wire clamp electric current line is let out using insulation annealed copper wire, line footpath size with being connected on metal oxide arrester body The insulation annealed copper wire line footpath of electric leakage flow table is identical.
The present invention is the first lead wire clamp and leakage current table tail end ground wire by leakage current table upper end lead wire clamp The leakage current table short circuit of metal oxide arrester is made metal oxide arrester inside valve block by i.e. the second lead wire clamp of folder Leakage current all pass through from leakage current of an arrester tester substantially, therefore can accurately measure leakage current values, enter one Step by additionally installing a portable protective gaps additional to leakage current of an arrester tester p-wire, by standby portable protective gaps come There is provided an extra arrester action current leakage path, it is to avoid lightning arrestor movement occurs when lightning arrester live-line test is carried out And by chance the main leakage path damage of arrester causes operation voltage and electric current harm equipment and the situation of personal safety;Letter of the invention It is single reliable, it is easy to test connection, farthest ensure safety during electrical test personnel's operation.The dedicated testing wire application Scope is wide, with good market prospects and using value.
Description of the drawings
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the mounting structure schematic diagram of the present invention.
In figure:1st, inlet wire and outlet thermal shrinkable sleeve, 2, metal oxide arrester, 3, leakage current of an arrester tester, 4, Connection leakage current table upper end lead wire clamp, 5, leakage current table tail end earthing clamp, 6, leakage current table, 7, wire clamp electric current Line, 8, leakage current testing inlet wire, 9, portable protective gaps, 10, fixing bolt, 11, epoxy resin overcoat, 12, composite insulation outer coat, 13rd, leakage current testing outlet, 14, fuse.
Specific embodiment
As illustrated in fig. 1 and 2, the present invention includes a kind of arrester charging test overvoltage protection dedicated testing wire, including setting Put leakage current table upper end the first lead wire clamp 4, be arranged on leakage current table tail end the second lead wire clamp 5, protection between Gap, leakage current testing inlet wire 8, leakage current testing outlet 13, fuse 14 and leakage current of an arrester tester 3, this Bright is the first lead wire clamp 4 and leakage current table tail end earthing clamp i.e. the second lead by leakage current table upper end lead wire clamp The short circuit of leakage current table 6 of metal oxide arrester 2 is made the leakage electricity of the inside valve block of metal oxide arrester 2 by wire clamp 5 Stream all passes through from leakage current of an arrester tester 3 substantially, therefore can accurately measure leakage current values.
Described the first lead wire clamp and the second lead wire clamp passes through respectively the two ends phase of wire clamp electric current line and portable protective gaps 9 Connection, the both ends of portable protective gaps 9 connect arrester by leakage current testing inlet wire 8 and leakage current testing outlet 13 respectively The current input terminal of leakage current tester 3, wherein fuse 14 be connected on portable protective gaps 9 to leakage current testing inlet wire 8 it Between.The set location of the portable protective gaps 9 in the present invention was had to before fuse 14, because only that be arranged such, between protection Gap 9 can really play a protective role, it is assumed that fuse 14 is located at before portable protective gaps 9, when there is lightning arrestor movement, protect Dangerous silk can fuse rapidly, if but now the high potential of end terminal hits again within the of short duration time on leakage current of an arrester table Wear fuse fracture and cause afterflow, then afterflow will ignore portable protective gaps 9 and be directly entered in test equipment and cause equipment and the person Injury.Portable protective gaps 9 are located at before fuse 14, can be after fuse 14 fuses, to the leakage current of an arrester for still suffering from The high potential of end terminal provides a current by pass on table, protects the safety of the person and equipment.
A portable protective gaps 9 are set at wire clamp electric current line 7 and the tie point of leakage current testing inlet wire 8, are worked as protection and is kept away End terminal is possible to breakdown fuse silk fracture again within the of short duration time and causes people still in high potential in thunder device leakage current table Body is injured,
Described portable protective gaps 9 are ball gap, including sealing epoxy resin overcoat 11 and be fixedly installed on by screw respectively close First fixing bolt and the second fixing bolt, the first fixing bolt and the second fixing bolt at the two ends of epoxy resin overcoat 11 of envelope Gap is arranged.The portable protective gaps 9 are slightly thicker than wire clamp electric current 7 line footpaths of line, can with assembly and disassembly and can arbitrarily adjust gap clearance with Control breakdown voltage level, described the first fixing bolt and the gap length of the second fixing bolt paper is that fuse 14 is average The half of fuse breaking distance, ensure that and avoid that in the case of blown fuse fuse gap occurs repeated breakdown, it is ensured that be excessively electric Pressure energy amount discharges from the portable protective gaps 9.
It is described also to include composite insulation outer coat 12, the composite insulation outer coat 12 be used to making epoxy resin overcoat 11 with Equal closing at the electrical connection of first, second fixing bolt 10, it is to avoid testing crew gets an electric shock.
Described leakage current testing outlet 13 is electric with leakage current of an arrester tester 3 with leakage current testing inlet wire 8 Stream input is additionally provided with thermal shrinkable sleeve 1 outside junction, and it is concrete that leakage current of an arrester tester 3 repeats no more its for existing product Structure.
Described wire clamp electric current line 7 is connected using insulation annealed copper wire, line footpath size with the body of metal oxide arrester 2 The insulation annealed copper wire line footpath of leakage current table 6 is identical.
Arrive between leakage current testing inlet wire 8 in portable protective gaps 9 and fuse 14 is set, fuse 14 selects loop current to surpass The i.e. rapid fusing of 5A is crossed, for test loop protection test equipment and the personal security of fusing during arrester action current.Wherein, it is attached Dotted portion is leakage current testing outlet 13 in figure, because some leakage current of an arrester testers 3 use proprietary leakage Testing current outlet 13 constitutes leakage current testing loop with leakage current testing inlet wire 8, now needs to install leakage current survey additional Line 13 is tried out, and some leakage current of an arrester testers 3 are constituted with leakage current testing inlet wire 8 using the ground connection on equipment and let out Leakage current test loop.Leakage current testing outlet 13 need to not needed depending on the concrete condition of leakage current of an arrester tester 3, But with or without leakage current testing outlet 13, portable protective gaps 9 may be used to protection when leakage current of an arrester table upper end The personal injury that high potential is likely to result at wire clamp.Final leakage current testing outlet 13 and leakage current testing inlet wire 8 all lead to Cross inlet wire and outlet thermal shrinkable sleeve 1 is put together, access arrangement.
This dedicated testing wire by portable protective gaps can also by two copper rods near constituting, realization can with assembly and disassembly and Gap clearance can arbitrarily be adjusted to control breakdown voltage level, wiring is simple and reliable, be easy to tackle various electric pressure arresters Leakage current live testing situation.This dedicated testing wire portable protective gaps double hyer insulation is arranged, when preferably having ensured personnel's operation Safety.The p-wire provides an extra arrester action current leakage path by a standby portable protective gaps, Avoid occurring when lightning arrester live-line test is carried out lightning arrestor movement and by chance the main leakage path of arrester is damaged and causes action electricity Pressure and electric current endanger the situation of equipment and personal safety.The dedicated testing wire is simple and reliable for structure, is easy to test connection, maximum journey Safety during electrical test personnel's operation has been ensured degree.Above-mentioned specific embodiment is used for illustrating the present invention, rather than to this Invention is limited, in the protection domain of spirit and claims of the present invention, any modification that the present invention is made and change More, protection scope of the present invention is both fallen within.

Claims (6)

1. a kind of arrester charging test overvoltage protection dedicated testing wire, it is characterised in that:Including being arranged on leakage current table First lead wire clamp of upper end, the second lead wire clamp for being arranged on leakage current table tail end, portable protective gaps, leakage current testing enter Line(8), leakage current testing outlet(13), fuse(14)With leakage current of an arrester tester(3), described the first lead Wire clamp and the second lead wire clamp are connected respectively by wire clamp electric current line with the two ends of portable protective gaps, the two end portions of portable protective gaps Tong Guo not leakage current testing inlet wire(8)With leakage current testing outlet(13)Connection leakage current of an arrester tester(3)'s Current input terminal, wherein fuse(14)Positioned at portable protective gaps(9)With leakage current of an arrester tester(3)Between, it is connected on Leakage current testing inlet wire(8)Duan Shang.
2. arrester charging test overvoltage protection dedicated testing wire according to claim 1, it is characterised in that:Described Portable protective gaps(9)For ball gap, including the epoxy resin overcoat of sealing(11)It is fixedly installed on the ring of sealing by screw respectively Oxygen silicone jacket(11)First fixing bolt and the second fixing bolt at two ends, the first fixing bolt and the second fixing bolt gap Arrange.
3. arrester charging test overvoltage protection dedicated testing wire according to claim 2, it is characterised in that:Described The gap length of the first fixing bolt and the second fixing bolt paper is fuse(14)The half of average melt distance.
4. arrester charging test overvoltage protection dedicated testing wire according to claim 3, it is characterised in that:Described Also include composite insulation outer coat(12), the composite insulation outer coat(12)For making epoxy resin overcoat(11)With first, Two fixing bolts(10)Electrical connection at equal closing, it is to avoid testing crew gets an electric shock.
5. arrester charging test overvoltage protection dedicated testing wire according to claim 4, it is characterised in that:Described Leakage current testing outlet(13)With leakage current testing inlet wire(8)With leakage current of an arrester tester(3)Current input terminal Thermal shrinkable sleeve is additionally provided with outside junction(1).
6. arrester charging test overvoltage protection dedicated testing wire according to claim 5, it is characterised in that:Described Wire clamp electric current line(7)Using insulation annealed copper wire, line footpath size and metal oxide arrester(2)Connect leakage current table on body (6)Insulation annealed copper wire line footpath it is identical.
CN201710040797.1A 2017-01-20 2017-01-20 Lightning arrester live-line test overvoltage protection special test wire Pending CN106645825A (en)

Priority Applications (1)

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CN201710040797.1A CN106645825A (en) 2017-01-20 2017-01-20 Lightning arrester live-line test overvoltage protection special test wire

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Application Number Priority Date Filing Date Title
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107703335A (en) * 2017-09-26 2018-02-16 国网福建省电力有限公司 Voltage signal for testing current in resistance property of lightning arrester accesses folder and its application method
CN107765134A (en) * 2017-10-24 2018-03-06 深圳供电局有限公司 A kind of method and unmanned plane of the lightning arrester live-line test for carrying out transmission line of electricity
CN108089048A (en) * 2017-11-14 2018-05-29 国网山东省电力公司枣庄供电公司 A kind of low current test device
CN110108908A (en) * 2019-06-05 2019-08-09 广东电网有限责任公司 Hi-pot test line wire clamp
CN113341340A (en) * 2021-05-19 2021-09-03 国网河北省电力有限公司检修分公司 Voltage-dividing insulating cap for direct-current leakage current test of extra-high voltage controllable lightning arrester
CN114759515A (en) * 2022-02-24 2022-07-15 国网浙江省电力有限公司金华供电公司 Integrated device of manual or automatic short circuit leakage ammeter
CN115097168A (en) * 2022-06-23 2022-09-23 国网湖北省电力有限公司宜昌供电公司 Multifunctional wiring device for live-line test of lightning arrester

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CN200993667Y (en) * 2007-01-12 2007-12-19 南京伏安电力设备有限公司 Non-residual-voltage digital display lightning arrester on-line monitor
CN201278005Y (en) * 2008-09-17 2009-07-22 西安理工大学 Wireless monitoring apparatus for electric power system lightning arrestor
CN201532453U (en) * 2009-06-17 2010-07-21 河南省电力公司商丘供电公司 Tester of lightning arrester monitor
CN202512187U (en) * 2012-04-01 2012-10-31 河南省电力公司驻马店供电公司 Online monitoring device of lightning arrester
CN203101482U (en) * 2013-01-11 2013-07-31 四川电力科学研究院 Metallic oxide arrester leakage current detection device and system
CN204330922U (en) * 2014-12-26 2015-05-13 马钢(集团)控股有限公司 Lightning arrester on-line checkingi safety feature
CN206671376U (en) * 2017-01-20 2017-11-24 国网河南省电力公司电力科学研究院 A kind of arrester charging test overvoltage protection dedicated testing wire

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200993667Y (en) * 2007-01-12 2007-12-19 南京伏安电力设备有限公司 Non-residual-voltage digital display lightning arrester on-line monitor
CN201278005Y (en) * 2008-09-17 2009-07-22 西安理工大学 Wireless monitoring apparatus for electric power system lightning arrestor
CN201532453U (en) * 2009-06-17 2010-07-21 河南省电力公司商丘供电公司 Tester of lightning arrester monitor
CN202512187U (en) * 2012-04-01 2012-10-31 河南省电力公司驻马店供电公司 Online monitoring device of lightning arrester
CN203101482U (en) * 2013-01-11 2013-07-31 四川电力科学研究院 Metallic oxide arrester leakage current detection device and system
CN204330922U (en) * 2014-12-26 2015-05-13 马钢(集团)控股有限公司 Lightning arrester on-line checkingi safety feature
CN206671376U (en) * 2017-01-20 2017-11-24 国网河南省电力公司电力科学研究院 A kind of arrester charging test overvoltage protection dedicated testing wire

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107703335A (en) * 2017-09-26 2018-02-16 国网福建省电力有限公司 Voltage signal for testing current in resistance property of lightning arrester accesses folder and its application method
CN107765134A (en) * 2017-10-24 2018-03-06 深圳供电局有限公司 A kind of method and unmanned plane of the lightning arrester live-line test for carrying out transmission line of electricity
CN107765134B (en) * 2017-10-24 2023-11-14 深圳供电局有限公司 Method for carrying out live test on lightning arrester of power transmission line and unmanned aerial vehicle
CN108089048A (en) * 2017-11-14 2018-05-29 国网山东省电力公司枣庄供电公司 A kind of low current test device
CN110108908A (en) * 2019-06-05 2019-08-09 广东电网有限责任公司 Hi-pot test line wire clamp
CN113341340A (en) * 2021-05-19 2021-09-03 国网河北省电力有限公司检修分公司 Voltage-dividing insulating cap for direct-current leakage current test of extra-high voltage controllable lightning arrester
CN114759515A (en) * 2022-02-24 2022-07-15 国网浙江省电力有限公司金华供电公司 Integrated device of manual or automatic short circuit leakage ammeter
CN114759515B (en) * 2022-02-24 2023-08-01 国网浙江省电力有限公司金华供电公司 Manual or automatic integrated device of short circuit leakage ammeter
CN115097168A (en) * 2022-06-23 2022-09-23 国网湖北省电力有限公司宜昌供电公司 Multifunctional wiring device for live-line test of lightning arrester
CN115097168B (en) * 2022-06-23 2023-10-31 国网湖北省电力有限公司宜昌供电公司 Multifunctional wiring device for live test of lightning arrester

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Application publication date: 20170510