CN105572550A - Insulating test piece and test electrode device using same - Google Patents
Insulating test piece and test electrode device using same Download PDFInfo
- Publication number
- CN105572550A CN105572550A CN201510951666.XA CN201510951666A CN105572550A CN 105572550 A CN105572550 A CN 105572550A CN 201510951666 A CN201510951666 A CN 201510951666A CN 105572550 A CN105572550 A CN 105572550A
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- test
- holding tank
- electrode
- matrix
- insulation
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/16—Construction of testing vessels; Electrodes therefor
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/20—Preparation of articles or specimens to facilitate testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to an insulating test piece and a test electrode device using the same. The insulating test piece comprises a base body (1) made of a insulating material to be tested, a first holding groove (5) for matching and holding a high-voltage test electrode (3) is arranged on one side of the base body, a second holding groove (6) for matching and holding a low-voltage test electrode (4) is arranged on the other side, opposite to the first holding groove, of the base body, and an inter-groove insulating part (2) integrated with the base body is arranged between the first holding groove and the second holding groove. Compared with a traditional insulating material electric intensity test method, the local discharge of the material surface is reduced, the test result is more accurate, the test environment of the invention is consistent with the actual operation environment of the electric equipment, and the test result has more practical guiding significance.
Description
Technical field
The present invention relates to a kind of test specimen and use the test electrode apparatus of this insulation test specimen of insulating.
Background technology
Can the insulating property of high voltage electric equipment directly decide electric system reliability service, for effectively ensureing that high pressure electrical products has excellent insulating property, must test electrical strength under the power frequency of insulating material (48Hz ~ 62Hz) in short-term electrical strength and 1.2/50 μ s pulse voltage stress.
Insulating material electrical strength measuring method Main Basis GB1408 " insulating material electrical strength test method ".For preventing flashover, electrical strength test is carried out in transformer oil, and the thickness requirement 1.0 ± 0.1mm of casting insulated examination bar, adopts not isometrical electrode to measure, electrode is made up of two metal cylinders, its edge is rounded to the circular arc that radius is 3.0 ± 0.2mm, and the diameter of one of them electrode is 25 ± 1mm, and height is 25mm about, another electrode diameter is 75 ± 1mm, height is 15mm about, and two electrodes are coaxially placed, and error is in 2mm.There is following problem in this kind of measuring method, there is certain shelf depreciation in the noncontact position of two lateral electrodes and test material, there is deviation in material electrical strength measured value, on the other hand, test is carried out in liquid insulating medium, different from power equipment actual motion environment, the test data of acquisition effectively can not represent the electric property of insulated product under actual motion condition.
Summary of the invention
The object of this invention is to provide a kind of insulation test specimen, in order to solve the problem of the shelf depreciation that existing insulation test specimen produces when Insulation Test.
For achieving the above object, the solution of the present invention comprises:
A kind of insulation test specimen, comprise the matrix (1) be made up of insulating material to be measured, it is characterized in that, described matrix side is provided with first holding tank (5) for identical accommodation high-potting electrode (3), the matrix opposite side opposing with the first holding tank is provided with the second holding tank (6) for identical accommodation low pressure test (LPT) electrode (4), for having and insulated part (2) between matrix integrated groove between the first holding tank and the second holding tank.
Described matrix (1) one moulding by casting.
First holding tank (5), the second holding tank (6) equal diameters.
Meanwhile, present invention also offers a kind of test electrode apparatus, comprising:
For connecting the insulation test specimen of electric discharge device, insulation test specimen comprises the matrix (1) be made up of insulating material to be measured, described matrix side is provided with the first holding tank (5), the matrix opposite side opposing with the first holding tank is provided with the second holding tank (6), first holding tank (5) coincide and holds high-potting electrode (3), and the second holding tank (6) coincide and holds low pressure test (LPT) electrode; For having and insulated part (2) between matrix integrated groove between first holding tank and the second holding tank.
Described matrix (1) and high-potting electrode (3), low pressure test (LPT) electrode (4) one moulding by casting.
First holding tank (5), the second holding tank (6) equal diameters; High-potting electrode (3), low pressure test (LPT) electrode (4) equal diameters.
Described test electrode apparatus also comprises one for placing the housing (9) of insulation test specimen, insulation gas filled in housing.
Insulation test specimen structure of the present invention, wraps up completely by test electrode, thus avoids office that proving installation body construction in existing GB1408 " insulating material electrical strength test method " causes and the problem such as to put, and the data recorded are more accurate.
Further, adopt the form of cast, make insulation test specimen, high-field electrode, low-field electrode one-body molded, ensure that coated effect, eliminate the better effects if of shelf depreciation.
Further, insulation test specimen is placed in gas-insulated environment and tests, consistent with power equipment actual motion environment, test result has more practical significance.
Accompanying drawing explanation
Fig. 1 is the structural drawing of test electrode apparatus embodiment 1;
Fig. 2 is the structural drawing of test electrode apparatus embodiment 2.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Embodiment 1
Be illustrated in figure 1 consistent test electrode apparatus, comprise for the test specimen that insulate, high-potting electrode 3 and low pressure test (LPT) electrode 4, insulation test specimen comprises the matrix 1 be made up of insulating material to be measured, matrix side is provided with the first holding tank 5, the matrix opposite side opposing with the first holding tank is provided with the second holding tank 6, first holding tank 5 coincide and holds high-potting electrode 3, second holding tank 6 identical accommodation low pressure test (LPT) electrode 4; For having and insulated part 2 between matrix integrated groove between first holding tank and the second holding tank.
By being wrapped up completely by test electrode, thus avoid office that proving installation body construction in existing GB1408 " insulating material electrical strength test method " causes and the problem such as to put, the data recorded are more accurate.
In order to ensure not produce shelf depreciation further, wrapped with insulation test electrode can be made by the mode of cast, make matrix 1 and high-potting electrode 3, low pressure test (LPT) electrode 4 one moulding by casting.
Casting process is:
1) conductor electrode part cleaning: conductor electrode is placed in acid solution and carries out cleanup acid treatment, ensures that conductor electrode surface cleaning is without dirt.
2) die treatment: mould is heated under 125 ± 5 DEG C of conditions 3h and carry out pre-service.
3) Feedstock treating: resin is processed 5h at 135 ± 5 DEG C, guarantees that resin fully melts, and is added according to a certain ratio by the raw materials such as resin, filler, hardening agent, stirs degassed process.
4) pour into a mould: mould pushes pouring furnace, under 125 ± 5 DEG C of conditions, pour into a mould 5 ~ 10min.
5) solidify: 105 ± 5 DEG C/15 ± 0.5h, 150 ± 5 DEG C/20 ± 0.5h (the centre not demoulding).
6) repair: remove cast gate, finishing test electrode surface.
Embodiment 2
Differently from embodiment 1 be, test electrode apparatus also comprises one for placing the housing 9 of insulation test specimen, in housing insulation gas filled 10.High-field electrode connects conduction and support component 7, and low-field electrode connects conductive component 8.
Housing (cylindrical shell) is filled with 0.4MPaSF6 gas-insulated medium, and test electrode one end connects high-tension electricity by conductive component and support component 7, and the other end is connected with cylindrical shell by conductive component 8, common ground, forms test loop.Insulation test specimen is placed in gas-insulated environment test, consistent with power equipment actual motion environment, test result has more practical significance.As required, also can test in vacuum, oil.
Concrete Hi-pot test process is:
1) build test unit: with isolating switch cylindrical shell for test unit, install by its inner conductive and support component, by test electrode label 01,02,03,04,05, and be fixed on test inner barrel successively.
2) preparatory process before test: the above-mentioned test cylindrical shell installed is carried out encapsulation process, vacuumizes, and be filled with 0.4MPaSF6 gas as insulating medium.
3) test: under 0.4MPaSF6 condition, industrial frequency withstand voltage 30kV/mm1min, by after carry out industrial frequency withstand voltage 40kV/mm1min, this test by after carry out 1.2/50 μ s lightning impulse ± 70kV/mm, each 1 time.Through test, 01,02,03, No. 04 industrial frequency withstand voltage 30kV/mm1min passes through, and industrial frequency withstand voltage 40kV/mm1min does not pass through, and No. 05 industrial frequency withstand voltage 30kV/mm1min passes through, and industrial frequency withstand voltage 40kV/mm1min passes through, and lightning impulse ± 70kV/mm passes through.
Be more than test electrode apparatus embodiment, about insulation test specimen embodiment, owing to being described in detail above, therefore do not repeat them here.
Be presented above the embodiment that the present invention relates to, but the present invention is not limited to described embodiment.Under the thinking that the present invention provides; the mode easily expected to those skilled in the art is adopted to convert the technological means in above-described embodiment, replace, revise; and the effect played goal of the invention that is substantially identical with the relevant art means in the present invention, that realize is also substantially identical; the technical scheme of such formation is carried out fine setting to above-described embodiment and is formed, and this technical scheme still falls within the scope of protection of the present invention.
Claims (7)
1. an insulation test specimen, comprise the matrix (1) be made up of insulating material to be measured, it is characterized in that, described matrix side is provided with first holding tank (5) for identical accommodation high-potting electrode (3), the matrix opposite side opposing with the first holding tank is provided with the second holding tank (6) for identical accommodation low pressure test (LPT) electrode (4), for having and insulated part (2) between matrix integrated groove between the first holding tank and the second holding tank.
2. one insulation test specimen according to claim 1, is characterized in that, described matrix (1) one moulding by casting.
3. one insulation test specimen according to claim 1 and 2, is characterized in that, the first holding tank (5), the second holding tank (6) equal diameters.
4. a test electrode apparatus, comprise the insulation test specimen for connecting electric discharge device, it is characterized in that, insulation test specimen comprises the matrix (1) be made up of insulating material to be measured, described matrix side is provided with the first holding tank (5), the matrix opposite side opposing with the first holding tank is provided with the second holding tank (6), first holding tank (5) coincide and holds high-potting electrode (3), and the second holding tank (6) coincide and holds low pressure test (LPT) electrode (4); For having and insulated part (2) between matrix integrated groove between first holding tank and the second holding tank.
5. a kind of test electrode apparatus according to claim 4, is characterized in that, described matrix (1) and high-potting electrode (3), low pressure test (LPT) electrode (4) one moulding by casting.
6. a kind of test electrode apparatus according to claim 4, it is characterized in that, first holding tank (5), the second holding tank (6) equal diameters, high-potting electrode (3), low pressure test (LPT) electrode (4) equal diameters.
7. a kind of test electrode apparatus according to claim 4 or 5 or 6, is characterized in that, described test electrode apparatus also comprises one for placing the housing (9) of insulation test specimen, insulation gas filled in housing (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510951666.XA CN105572550B (en) | 2015-12-18 | 2015-12-18 | A kind of insulation test specimen and the test electrode apparatus using the insulation test specimen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510951666.XA CN105572550B (en) | 2015-12-18 | 2015-12-18 | A kind of insulation test specimen and the test electrode apparatus using the insulation test specimen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105572550A true CN105572550A (en) | 2016-05-11 |
| CN105572550B CN105572550B (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510951666.XA Expired - Fee Related CN105572550B (en) | 2015-12-18 | 2015-12-18 | A kind of insulation test specimen and the test electrode apparatus using the insulation test specimen |
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| CN (1) | CN105572550B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007203A (en) * | 2019-05-07 | 2019-07-12 | 国网上海市电力公司 | A kind of high-tension cable pressure test component |
| CN110068754A (en) * | 2018-01-24 | 2019-07-30 | 上海交通大学 | Sample mould suitable for polymer heavy insulation slab construction electrical breakdown test |
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| CN201530869U (en) * | 2009-08-26 | 2010-07-21 | 彭星龙 | Electrolytic cell electrode copper-bar insulating ceramic tile |
| CN202177684U (en) * | 2011-08-12 | 2012-03-28 | 上海市电力公司 | Multi-type partial discharge simulating apparatus for gas-insulated metal-enclosed device |
| CN102608505A (en) * | 2012-03-30 | 2012-07-25 | 重庆大学 | Multi-region detection system for partial discharge decomposition components of insulating gas and method thereof |
| CN102650673A (en) * | 2012-05-25 | 2012-08-29 | 重庆大学 | Electrode space control system for insulating gas discharge decomposition component detection device |
| CN202886542U (en) * | 2012-11-15 | 2013-04-17 | 国家电网公司 | Junction device for cable high-voltage resistance test |
| CN103105568A (en) * | 2013-01-16 | 2013-05-15 | 重庆市电力公司电力科学研究院 | Transformer paper oil insulation experiment device integrated with electric heating combination ageing and partial discharge |
| CN103135085A (en) * | 2013-02-07 | 2013-06-05 | 广东电网公司电力科学研究院 | High-repeatability standard bubble discharge model device |
| CN104076232A (en) * | 2014-07-17 | 2014-10-01 | 国网上海市电力公司 | Transformer oil-paper insulation electricity-heating unite ageing test device |
| CN104698349A (en) * | 2015-01-16 | 2015-06-10 | 广东电网有限责任公司电力科学研究院 | Paper oil insulation partial discharge test device |
-
2015
- 2015-12-18 CN CN201510951666.XA patent/CN105572550B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0699918A1 (en) * | 1994-09-02 | 1996-03-06 | ABB Management AG | A partial discharge sensing device for a gas insulated apparatus |
| CN101483099A (en) * | 2008-12-22 | 2009-07-15 | 杨贻方 | Magnetic capacitor |
| CN201530869U (en) * | 2009-08-26 | 2010-07-21 | 彭星龙 | Electrolytic cell electrode copper-bar insulating ceramic tile |
| CN202177684U (en) * | 2011-08-12 | 2012-03-28 | 上海市电力公司 | Multi-type partial discharge simulating apparatus for gas-insulated metal-enclosed device |
| CN102608505A (en) * | 2012-03-30 | 2012-07-25 | 重庆大学 | Multi-region detection system for partial discharge decomposition components of insulating gas and method thereof |
| CN102650673A (en) * | 2012-05-25 | 2012-08-29 | 重庆大学 | Electrode space control system for insulating gas discharge decomposition component detection device |
| CN202886542U (en) * | 2012-11-15 | 2013-04-17 | 国家电网公司 | Junction device for cable high-voltage resistance test |
| CN103105568A (en) * | 2013-01-16 | 2013-05-15 | 重庆市电力公司电力科学研究院 | Transformer paper oil insulation experiment device integrated with electric heating combination ageing and partial discharge |
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| CN104076232A (en) * | 2014-07-17 | 2014-10-01 | 国网上海市电力公司 | Transformer oil-paper insulation electricity-heating unite ageing test device |
| CN104698349A (en) * | 2015-01-16 | 2015-06-10 | 广东电网有限责任公司电力科学研究院 | Paper oil insulation partial discharge test device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068754A (en) * | 2018-01-24 | 2019-07-30 | 上海交通大学 | Sample mould suitable for polymer heavy insulation slab construction electrical breakdown test |
| CN110068754B (en) * | 2018-01-24 | 2021-01-08 | 上海交通大学 | Sample mould suitable for polymer thick insulation flat structure electrical breakdown test is used |
| CN110007203A (en) * | 2019-05-07 | 2019-07-12 | 国网上海市电力公司 | A kind of high-tension cable pressure test component |
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| Publication number | Publication date |
|---|---|
| CN105572550B (en) | 2019-01-22 |
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