CN106018921A - Lightning arrester leakage current test auxiliary tool and method - Google Patents
Lightning arrester leakage current test auxiliary tool and method Download PDFInfo
- Publication number
- CN106018921A CN106018921A CN201610408111.5A CN201610408111A CN106018921A CN 106018921 A CN106018921 A CN 106018921A CN 201610408111 A CN201610408111 A CN 201610408111A CN 106018921 A CN106018921 A CN 106018921A
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- Prior art keywords
- leakage current
- spark gap
- insulating bar
- current test
- bar
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a lightning arrester leakage current test auxiliary tool and method. The lightning arrester leakage current test auxiliary tool comprises three parts of a support pedestal, a telescopic type insulation rod and an insulation cross bar; the support pedestal is used for supporting the insulation rod; the insulation rod is fixed by a fixing bolt which keeps the insulation rod vertical; the insulation rod is telescopic and can reach a top position of a lightning arrester when extending to a highest position; and the insulation cross bar is fixed on the top of the insulation rod in a horizontal manner and is provided with a wiring groove for supporting a high voltage lead.
Description
Technical field
The invention discloses a kind of spark gap Leakage Current test aid and method.
Background technology
Leakage current test under spark gap direct current 1mA reference voltage and 0.75U1mA DC reference voltage is the customary examination of spark gap
Testing project, the two parameter reflection lightning arrester characteristic point of inflexion on a curve position, is the characterisitic parameter of spark gap, is to weigh spark gap
One of important symbol of insulating properties quality, the leading indicator of its security performance especially.Find to record spark gap by statistical analysis straight
Flowing leakage current just value difference meansigma methods is 148%, and by " power transmission and transformation State Overhaul Test code " requirement, Zinc-Oxide Arrester
DC leakage-current under 0.75U1mA just value difference≤30%, therefore reduces spark gap DC leakage-current test error and becomes urgent need
The problem solved.
The factor affecting spark gap direct current leakage size of current mainly has the impact of humiture, the impact of spark gap surface filth, high
The impact etc. of pressure p-wire, and during on-the-spot test, humiture all meets regulatory requirements and test result is all converted to t=25 DEG C, h=70%,
All carrying out wiping so also will not make a big impact test result before spark gap test, bigger on test result impact is high
The impact of pressure p-wire.
Summary of the invention
In order to solve the technical problem that prior art exists, the invention discloses a kind of spark gap Leakage Current aid and side
Method, changes the distance between high-voltage output line and lightning arrester body high-voltage output line is in 90 ° with lightning arrester body, to cut down
The impact of stray capacitance, angle increases the accuracy that can greatly improve test value.
The technical solution used in the present invention is:
Spark gap Leakage Current test aid, including supporting base, extension type insulating bar and insulation cross bar three part,
Support base is used for supports insulative bar, and has fixing bolt to make insulating bar be vertical direction in order to fixed insulation bar, and insulating bar is scalable,
Extending to extreme higher position and should be able to reach spark gap apical position, insulation cross bar is fixed on insulating bar top in horizontal direction, and has
The trough of support high-voltage connection.
Further, described support base is made up of support baseboard and Supporting vertical tube, and Supporting vertical tube is perpendicular to support baseboard, and
Supporting vertical tube is drilled with bolt hole.
Further, described insulation cross bar uses epoxy resin board to make, and is positioned at level including a horizontal supporting plate and four
The most fixing wiring board on four angles of gripper shoe, and the most fixing wiring board that the most fixing wiring board is the most symmetrical and relative
Between define trough.
Further, the center of described horizontal supporting plate has one for the screw being connected with extension type insulating bar.
Further, the manufacture method of spark gap Leakage Current test aid is as follows:
Step 1 support baseboard selects steel plate, Supporting vertical tube steel pipe, the cutting of steel pipe cutting machine is obtained Len req, uses electric welding
Supporting vertical tube is welded together by machine with support baseboard, and ensure Supporting vertical tube at the center of support baseboard, and support baseboard with
Support base plate keeps vertical, gets out for fixing bolt hole on standpipe at a certain distance from base plate, and whole support base makes
Complete；
Step 2 extension type insulating bar selects the electrical verification rod of 220kV as making material, is unloaded by the electroscopic device at electrical verification rod top
Under, find coupling screw, complete the making of insulating bar；
Step 3 cross bar that insulate uses epoxy resin board to make, epoxy resin board is cut out one piece as horizontal supporting plate, cutting
Go out four pieces and fix wiring board as vertical, in the corner of horizontal supporting plate and the most fixing wiring board side perforating, then close with aluminum
Gold sheet metal and rivet are fixed, and get out screw at the center of horizontal supporting plate, complete the making of insulation cross bar；
The bottom of extension type insulating bar is connected with Supporting vertical tube by step 4 by screw, and the top of extension type insulating bar is passed through
Screw is connected with the center of insulation cross bar, completes the manufacturing process of whole aid.
The detection method of the present invention is for live testing, as follows:
Aid is placed on the side of spark gap, and the height of regulation extension type insulating bar by step 1 so that it is with spark gap
Overhead height consistent；
The p-wire of HVDC Leakage Current test system is passed the trough at insulation cross bar top and the top of spark gap by step 2
Portion is connected；
Step 3 is in series with one for the microampere meter measuring Leakage Current size on p-wire；
Step 4 opens the switch of HVDC Leakage Current test system, measures the size of Leakage Current.
Beneficial effects of the present invention is as follows:
Use the leakage current values that records of aid record with traditional method compared with have and reduce by a relatively large margin, first value difference was by originally
148% be reduced to 20%, meet the requirement of just value difference≤30%.
The development of aid can get rid of the anthropic factor interference to test data as far as possible, and be favorably improved in work process can
By degree and work efficiency.
Condition adjudgement reliability is improved to 100% by implementing front 90%；
Change test connection time shortening 5min.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or prior art
In description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is some realities of the present invention
Execute example, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to these accompanying drawings
Obtain other accompanying drawing.
Fig. 1 uses the schematic diagram that aid is tested；
Fig. 2 aid structure chart；
In figure: 1 spark gap, 2 aids, 3 p-wires, 4 microampere meters, 6 HVDC Leakage Current test systems, 2-1
Supporting base, 2-2 insulating bar, 2-3 insulate cross bar.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings:
As shown in Figure 1 and Figure 2, spark gap Leakage Current test aid, including supporting base 2-1, extension type insulating bar
2-2 and insulation cross bar 2-3 tri-part, support base 2-1 and be used for supports insulative bar 2-2, and have fixing bolt in order to fixed insulation
Bar 2-2 makes insulating bar 2-2 be vertical direction, and insulating bar 2-2 is scalable, extends to extreme higher position and should be able to reach spark gap top
Position, insulation cross bar 2-3 is fixed on insulating bar top in horizontal direction, and has the trough of supporting high-voltage lead wire.
The invention discloses a kind of spark gap Leakage Current testing auxiliary device, change between high-voltage output line and lightning arrester body
Distance high-voltage output line is in 90 ° with lightning arrester body, to cut down the impact of stray capacitance, angle increases and can carry greatly
The accuracy of high test value.
The manufacturing process of said apparatus is as follows:
Further, described support base is made up of support baseboard and Supporting vertical tube, and support baseboard selects a diameter of 40cm, thick
Degree is the steel plate of 0.7cm, Supporting vertical tube select external diameter 4.0cm, thickness of pipe wall 0.2cm steel pipe, a length of 22.5cm of standpipe；
The cutting of steel pipe cutting machine is obtained Len req, with electric welding machine, standpipe is welded together with base plate, it is ensured that standpipe is in the soleplate
The heart, and standpipe and base plate keep vertical, gets out for fixing bolt hole on standpipe at base plate 7cm-8cm, whole
Support base completes.
Further, extension type insulating bar selects the electrical verification rod of 220kV as making material, and electroscope totally 6 joint, withdrawal is long
Degree 86cm, is convenient for carrying, and stretching length is all 4.8m, meets test needs.The electroscopic device at top is unloaded, finds coupling spiral shell
Silk, completes the making of insulating bar.
Further, insulation cross bar use thickness 0.5cm epoxy resin board make, epoxy resin board is cut out 40cm ×
7.5cm mono-piece, as horizontal supporting plate, cuts out 7.7cm × 7.4cm tetra-pieces and fixes wiring board, at horizontal supporting plate as vertical
Corner and vertically fixing wiring board side perforating, then fixed, at horizontal supporting plate with Al-alloy metal sheet and rivet
Center gets out the screw of a diameter of 10.5mm, completes the making of insulation cross bar.
The detection method of the present invention is as follows:
Aid 2 is placed on the side of spark gap 1 by step 1, and the height of regulation extension type insulating bar so that it is with keep away
The overhead height of thunder device is consistent, and to guarantee that p-wire becomes 90 degree with spark gap, to cut down the impact of stray capacitance, angle increases can
Improve the accuracy of test value greatly.
The p-wire of HVDC Leakage Current test system is passed the trough at insulation cross bar top and the top of spark gap by step 2
Portion is connected；
Step 3 is in series with one for the microampere meter 4 measuring Leakage Current size on p-wire 3；
Step 4 opens the switch of HVDC Leakage Current test system, measures the size of Leakage Current.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not limit to scope
System, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art need not pay
Go out various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (6)
1. spark gap Leakage Current test aid, it is characterised in that include supporting base, extension type insulating bar and insulation
Cross bar three part, supports base and is used for supports insulative bar, and have fixing bolt to make insulating bar be vertical direction in order to fixed insulation bar,
Insulating bar is scalable, extends to extreme higher position and should be able to reach spark gap apical position, and it is water that insulation cross bar is fixed on insulating bar top
Square to, and have the trough of supporting high-voltage lead wire.
2. spark gap Leakage Current test aid as claimed in claim 1, it is characterised in that described support base by
Support baseboard and Supporting vertical tube composition, Supporting vertical tube is perpendicular to support baseboard, and is drilled with bolt hole on Supporting vertical tube.
3. spark gap Leakage Current test aid as claimed in claim 1, it is characterised in that described insulation cross bar is adopted
Make of epoxy resin board, the most fixing wiring board being positioned on four angles of horizontal supporting plate including a horizontal supporting plate and four,
And vertical the fixing vertically fixing wiring board the most symmetrical and relative defines trough between wiring board.
4. spark gap Leakage Current test aid as claimed in claim 1, it is characterised in that described horizontal supporting plate
Center have one for the screw being connected with extension type insulating bar.
5. the manufacture method of spark gap Leakage Current test aid as claimed in claim 1, it is characterised in that as follows:
Step 1 support baseboard selects steel plate, Supporting vertical tube steel pipe, the cutting of steel pipe cutting machine is obtained Len req, uses electric welding
Supporting vertical tube is welded together by machine with support baseboard, and ensure Supporting vertical tube at the center of support baseboard, and support baseboard with
Support base plate keeps vertical, gets out for fixing bolt hole on standpipe at a certain distance from base plate, and whole support base makes
Complete；
Step 2 extension type insulating bar selects the electrical verification rod of 220kV as making material, is unloaded by the electroscopic device at electrical verification rod top
Under, find coupling screw, complete the making of insulating bar；
Step 3 cross bar that insulate uses epoxy resin board to make, epoxy resin board is cut out one piece as horizontal supporting plate, cutting
Go out four pieces and fix wiring board as vertical, in the corner of horizontal supporting plate and the most fixing wiring board side perforating, then close with aluminum
Gold sheet metal and rivet are fixed, and get out screw at the center of horizontal supporting plate, complete the making of insulation cross bar；
The bottom of extension type insulating bar is connected with Supporting vertical tube by step 4 by screw, and the top of extension type insulating bar is passed through
Screw is connected with the center of insulation cross bar, completes the manufacturing process of whole aid.
6. utilizing the test aid of the spark gap Leakage Current described in claim 1 to carry out the detection method of leakage of current, it is special
Levy and be, as follows:
Aid is placed on the side of spark gap, and the height of regulation extension type insulating bar by step 1 so that it is with spark gap
Overhead height consistent；
The p-wire of HVDC Leakage Current test system is passed the trough at insulation cross bar top and the top of spark gap by step 2
Portion is connected；
Step 3 is in series with one for the microampere meter measuring Leakage Current size on p-wire；
Step 4 opens the switch of HVDC Leakage Current test system, measures the size of Leakage Current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610408111.5A CN106018921A (en) | 2016-06-12 | 2016-06-12 | Lightning arrester leakage current test auxiliary tool and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610408111.5A CN106018921A (en) | 2016-06-12 | 2016-06-12 | Lightning arrester leakage current test auxiliary tool and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106018921A true CN106018921A (en) | 2016-10-12 |
Family
ID=57090067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610408111.5A Pending CN106018921A (en) | 2016-06-12 | 2016-06-12 | Lightning arrester leakage current test auxiliary tool and method |
Country Status (1)
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| CN (1) | CN106018921A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843801A (en) * | 2017-10-23 | 2018-03-27 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of method of testing of oscillation device arrester |
| CN108344920A (en) * | 2018-04-18 | 2018-07-31 | 云南电网有限责任公司怒江供电局 | A kind of leakage current of an arrester testing auxiliary device and method |
| CN108872755A (en) * | 2018-08-06 | 2018-11-23 | 广东电网有限责任公司 | The system and lift assist mechanism detected to arrester |
| CN110579629A (en) * | 2019-10-22 | 2019-12-17 | 国家电网有限公司 | High-voltage lead supporting device for lightning arrester test |
| CN112147376A (en) * | 2020-08-25 | 2020-12-29 | 广东电网有限责任公司广州供电局 | Fixing support and high-voltage test device |
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| CN202421403U (en) * | 2012-01-16 | 2012-09-05 | 宁夏电力公司超高压分公司 | Direct current leakage test device for zinc oxide lightning arrester |
| CN202533466U (en) * | 2012-05-07 | 2012-11-14 | 齐河县电业公司 | Insulation support for high-voltage tests |
| CN103018499A (en) * | 2011-09-23 | 2013-04-03 | 国家电网公司 | Leakage current testing auxiliary device |
| CN203101566U (en) * | 2012-12-31 | 2013-07-31 | 宁夏电力公司固原供电局 | An auxiliary device used for a lightning arrester DC leakage current test |
| CN104237571A (en) * | 2013-06-20 | 2014-12-24 | 国家电网公司 | Supporting device of voltage applying line for lightning arrester test |
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2016
- 2016-06-12 CN CN201610408111.5A patent/CN106018921A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103018499A (en) * | 2011-09-23 | 2013-04-03 | 国家电网公司 | Leakage current testing auxiliary device |
| CN202421403U (en) * | 2012-01-16 | 2012-09-05 | 宁夏电力公司超高压分公司 | Direct current leakage test device for zinc oxide lightning arrester |
| CN202533466U (en) * | 2012-05-07 | 2012-11-14 | 齐河县电业公司 | Insulation support for high-voltage tests |
| CN203101566U (en) * | 2012-12-31 | 2013-07-31 | 宁夏电力公司固原供电局 | An auxiliary device used for a lightning arrester DC leakage current test |
| CN104237571A (en) * | 2013-06-20 | 2014-12-24 | 国家电网公司 | Supporting device of voltage applying line for lightning arrester test |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843801A (en) * | 2017-10-23 | 2018-03-27 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of method of testing of oscillation device arrester |
| CN108344920A (en) * | 2018-04-18 | 2018-07-31 | 云南电网有限责任公司怒江供电局 | A kind of leakage current of an arrester testing auxiliary device and method |
| CN108872755A (en) * | 2018-08-06 | 2018-11-23 | 广东电网有限责任公司 | The system and lift assist mechanism detected to arrester |
| CN108872755B (en) * | 2018-08-06 | 2023-07-21 | 广东电网有限责任公司 | System for detect arrester and rise auxiliary mechanism |
| CN110579629A (en) * | 2019-10-22 | 2019-12-17 | 国家电网有限公司 | High-voltage lead supporting device for lightning arrester test |
| CN112147376A (en) * | 2020-08-25 | 2020-12-29 | 广东电网有限责任公司广州供电局 | Fixing support and high-voltage test device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |
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| RJ01 | Rejection of invention patent application after publication |