CN105572550B - A kind of insulation test specimen and the test electrode apparatus using the insulation test specimen - Google Patents
A kind of insulation test specimen and the test electrode apparatus using the insulation test specimen Download PDFInfo
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- CN105572550B CN105572550B CN201510951666.XA CN201510951666A CN105572550B CN 105572550 B CN105572550 B CN 105572550B CN 201510951666 A CN201510951666 A CN 201510951666A CN 105572550 B CN105572550 B CN 105572550B
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- holding tank
- test
- electrode
- matrix
- test specimen
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Classifications
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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 present invention relates to a kind of insulation test specimen and use the test electrode apparatus of the insulation test specimen, insulate test specimen, including the matrix made of insulating materials to be measured (1), matrix side is equipped with one for the first holding tank (5) for accommodating high-potting electrode (3) that coincide, the matrix other side opposite with the first holding tank is equipped with for the second holding tank (6) for accommodating low pressure test (LPT) electrode (4) that coincide, and has the insulated part (2) between the integrally formed slot of matrix between the first holding tank and the second holding tank.Compared with traditional insulator materials electrical strength test method, present invention reduces the shelf depreciations of material surface, and test result is more accurate, and experimental enviroment of the present invention is consistent with power equipment actual motion environment, so that test result has more practical directive significance.
Description
Technical field
The present invention relates to a kind of insulation test specimen and use the test electrode apparatus of the insulation test specimen.
Background technique
The insulation performance of high voltage electric equipment directly decide electric system can reliability service, for high-voltage electricity is effectively ensured
Gas product has excellent insulation performance, it is necessary to the power frequency (48Hz~62Hz) of insulating materials electrical strength and 1.2/50 in short-term
Electrical strength is tested under μ s pulse voltage stress.
Insulating materials electrical strength measurement method is mainly according to GB1408 " insulating materials electrical strength test method ".It is anti-
Only flashover, electrical strength test carry out in transformer oil, 1.0 ± 0.1mm of thickness requirement of casting insulated strip, using differing
Diameter electrode measures, and electrode is made of two metal cylinders, and edge is rounded to the circular arc that radius is 3.0 ± 0.2mm,
In an electrode diameter be 25 ± 1mm, high about 25mm, another electrode diameter be 75 ± 1mm, high about 15mm, two electrodes
Coaxial placement, error is in 2mm.Such measurement method has the following problems, the non-contact position of two lateral electrodes and test material
There are certain shelf depreciation, there are deviations for material electrical strength measured value, and on the other hand, test is opened in liquid insulating medium
Exhibition, different from power equipment actual motion environment, the test data of acquisition cannot effectively represent the system that insulate under actual motion condition
The electric property of product.
Summary of the invention
The object of the present invention is to provide a kind of insulation test specimen, generated in Insulation Test solving existing insulation test specimen
The problem of shelf depreciation.
To achieve the above object, the solution of the present invention includes:
A kind of insulation test specimen, including the matrix made of insulating materials to be measured (1), which is characterized in that described matrix side
Equipped with one for the first holding tank (5) for accommodating high-potting electrode (3) that coincide, the matrix opposite with the first holding tank is another
Side is equipped with for the second holding tank (6) for accommodating low pressure test (LPT) electrode (4) that coincide, and is between the first holding tank and the second holding tank
There is the insulated part (2) between the integrally formed slot of matrix.
Described matrix (1) one moulding by casting.
First holding tank (5), the second holding tank (6) diameter are equal.
Meanwhile the present invention also provides a kind of test electrode apparatus, comprising:
For connecting the insulation test specimen of electric discharge device, insulation test specimen includes the matrix made of insulating materials to be measured (1), institute
Matrix side is stated equipped with the first holding tank (5), the matrix other side opposite with the first holding tank is equipped with the second holding tank (6), the
One holding tank (5), which coincide, accommodates high-potting electrode (3), and the second holding tank (6), which coincide, accommodates low pressure test (LPT) electrode；First accommodates
It is to have the insulated part (2) between the integrally formed slot of matrix between slot and the second holding tank.
Described matrix (1) and high-potting electrode (3), the integrated moulding by casting of low pressure test (LPT) electrode (4).
First holding tank (5), the second holding tank (6) diameter are equal；High-potting electrode (3), low pressure test (LPT) electrode (4) are straight
Diameter is equal.
The test electrode apparatus further includes one for placing the shell (9) of insulation test specimen, filled with the gas that insulate in shell
Body.
Insulation test specimen structure of the invention, test electrode is fully wrapped around, " absolutely so as to avoid existing GB1408
Edge material electrical strength test method " in partial discharge caused by test device body construction the problems such as, the data measured are more accurate.
Further, using the form of casting, make insulate test specimen, high-field electrode, low-field electrode integrated molding, ensure that packet
The effect covered, the effect for eliminating shelf depreciation are more preferable.
Further, insulation test specimen is placed in gas-insulated environment and is tested, with power equipment actual motion environment
Unanimously, test result has more practical significance.
Detailed description of the invention
Fig. 1 is the structure chart of test electrode apparatus embodiment 1；
Fig. 2 is the structure chart of test electrode apparatus embodiment 2.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawing.
Embodiment 1
It is as shown in Figure 1 consistent test electrode apparatus, including for insulate test specimen, high-potting electrode 3 and low pressure test (LPT)
Electrode 4, insulation test specimen include the matrix 1 made of insulating materials to be measured, and matrix side is equipped with the first holding tank 5, are held with first
The opposite matrix other side of slot of receiving is equipped with the second holding tank 6, and the first holding tank 5, which coincide, accommodates high-potting electrode 3, and second accommodates
Slot 6, which coincide, accommodates low pressure test (LPT) electrode 4；It is exhausted between the integrally formed slot of matrix to have between first holding tank and the second holding tank
Edge point 2.
By the way that test electrode is fully wrapped around, so as to avoid existing GB1408 " insulating materials electrical strength examination
Proved recipe method " in partial discharge caused by test device body construction the problems such as, the data measured are more accurate.
Shelf depreciation is not generated in order to be further ensured that, wrapped with insulation can be made to test by way of casting
Electrode makes matrix 1 and the integrated moulding by casting of high-potting electrode 3, low pressure test (LPT) electrode 4.
Casting process are as follows:
1) conductor electrode part is cleaned: conductor electrode being placed in acid solution and carries out pickling processes, guarantees conductor electrode surface
Cleaning is without dirt.
2) die treatment: mold is heated to 3h under the conditions of 125 ± 5 DEG C and is pre-processed.
3) resin feedstock processing: is handled into 5h at 135 ± 5 DEG C, it is ensured that resin sufficiently melts, by resin, filler, solidification
The raw materials such as agent are added according to a certain ratio, stir degassing process.
4) be poured: mold is pushed into pouring furnace, is poured 5~10min under the conditions of 125 ± 5 DEG C.
5) solidify: 105 ± 5 DEG C/15 ± 0.5h, 150 ± 5 DEG C/20 ± 0.5h (centre does not demould).
6) modify: removal cast gate modifies test electrode surface.
Embodiment 2
It is with 1 difference of embodiment, test electrode apparatus further includes one for placing the shell 9 of insulation test specimen, shell
In insulation gas filled 10.High-field electrode connection is conductive and support member 7, low-field electrode connect conductive component 8.
Shell (cylinder) is filled with 0.4MPaSF6 gas-insulated medium, and test electrode one end passes through conductive component and support portion
Part 7 connects high-voltage electricity, and the other end is connected by conductive component 8 with cylinder, common to be grounded, and forms test loop.To insulate test specimen
It is placed in gas-insulated environment and is tested, consistent with power equipment actual motion environment, test result has more practical significance.Root
According to needs, can also be tested in vacuum, oil.
Specific Hi-pot test process are as follows:
1) it builds experimental rig: using breaker cylinder as experimental rig, being pacified by its inner conductive and support member
Dress, by test electrode label 01,02,03,04,05, and is sequentially fixed at test inner barrel.
2) preparatory process before testing: the above-mentioned test cylinder installed is sealed processing, is vacuumized, and be filled with
0.4MPaSF6 gas is as dielectric.
3) test: under the conditions of 0.4MPa SF6, industrial frequency withstand voltage 30kV/mm 1min passes through rear progress industrial frequency withstand voltage 40kV/
Mm 1min, this test carry out 1.2/50 μ s lightning impulse ± 70kV/mm after passing through, and each 1 time.By test, 01,02,03,
No. 04 industrial frequency withstand voltage 30kV/mm 1min passes through, and industrial frequency withstand voltage 40kV/mm1min does not pass through, No. 05 industrial frequency withstand voltage 30kV/mm
1min passes through, and industrial frequency withstand voltage 40kV/mm 1min passes through, and lightning impulse ± 70kV/mm passes through.
It is test electrode apparatus embodiment above, about insulation test specimen embodiment, due to carrying out above in detail
Illustrate, therefore details are not described herein.
Specific embodiment of the present invention is presented above, but the present invention is not limited to described embodiment.
Under the thinking that the present invention provides, to the skill in above-described embodiment by the way of being readily apparent that those skilled in the art
Art means are converted, are replaced, are modified, and play the role of with the present invention in relevant art means it is essentially identical, realize
Goal of the invention it is also essentially identical, the technical solution formed in this way is to be finely adjusted to be formed to above-described embodiment, this technology
Scheme is still fallen in protection scope of the present invention.
Claims (7)
1. a kind of insulation test specimen, including the matrix made of insulating materials to be measured (1), which is characterized in that described matrix side is set
Have one for coincide receiving high-potting electrode (3) the first holding tank (5), the matrix other side opposite with the first holding tank
Equipped with for the second holding tank (6) for accommodating low pressure test (LPT) electrode (4) that coincide, have between the first holding tank and the second holding tank
The insulated part (2) between the integrally formed slot of matrix.
2. a kind of insulation test specimen according to claim 1, which is characterized in that described matrix (1) one moulding by casting.
3. a kind of insulation test specimen according to claim 1 or 2, which is characterized in that the first holding tank (5), the second holding tank
(6) diameter is equal.
4. a kind of test electrode apparatus, including the insulation test specimen for connecting electric discharge device, which is characterized in that insulation test specimen include
The matrix made of insulating materials to be measured (1), described matrix side is equipped with the first holding tank (5), opposite with the first holding tank
The matrix other side is equipped with the second holding tank (6), and the first holding tank (5), which coincide, accommodates high-potting electrode (3), the second holding tank
(6) it coincide and accommodates low pressure test (LPT) electrode (4)；It is to have between the integrally formed slot of matrix between first holding tank and the second holding tank
Insulated part (2).
5. a kind of test electrode apparatus according to claim 4, which is characterized in that described matrix (1) and high-potting electricity
Pole (3), the integrated moulding by casting of low pressure test (LPT) electrode (4).
6. a kind of test electrode apparatus according to claim 4, which is characterized in that the first holding tank (5), the second holding tank
(6) diameter is equal, and high-potting electrode (3), low pressure test (LPT) electrode (4) diameter are equal.
7. a kind of test electrode apparatus according to claim 4 or 5 or 6, which is characterized in that the test electrode apparatus is also
Including one for placing the shell (9) of insulation test specimen, in shell insulation gas filled (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 CN105572550A (en) | 2016-05-11 |
| CN105572550B true CN105572550B (en) | 2019-01-22 |
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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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| EP0699918A1 (en) * | 1994-09-02 | 1996-03-06 | ABB Management AG | A partial discharge sensing device for a gas insulated apparatus |
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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 |
| 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 |
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| CN105572550A (en) | 2016-05-11 |
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Granted publication date: 20190122 Termination date: 20211218 |