CN104698349B - Paper oil insulation partial discharge test device - Google Patents
Paper oil insulation partial discharge test device Download PDFInfo
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- CN104698349B CN104698349B CN201510022198.8A CN201510022198A CN104698349B CN 104698349 B CN104698349 B CN 104698349B CN 201510022198 A CN201510022198 A CN 201510022198A CN 104698349 B CN104698349 B CN 104698349B
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Abstract
Disclosed is a paper oil insulation partial discharge test device. The paper oil insulation partial discharge test device is characterized by comprising an organic glass oil cup 1, an organic glass electrode base seat 2, a metal electrode 6, a rectangular insulation paper 7, a vacuum pumping ball valve 4, a high voltage terminal electrode 8 and a grounded terminal electrode 9, wherein the top face of the organic glass oil cup 1 is an organic glass upper cover 3, at least two pairs of vertical grooves 5 equal in size are correspondingly formed in the inner sides of two long side walls of the organic glass oil cup 1, the organic glass electrode base seat 2 is a long rectangular flat plate with a threaded hole inside, the shape, the size and the thickness of the organic glass electrode base seat 2 are corresponding to that of one pair of the vertical grooves 5, the organic glass electrode base seat 2 is inserted into the pair of the vertical grooves 5, the metal electrode 6 is a long rectangular plate, the shape, the size and the thickness of the metal electrode 6 are corresponding to that of the other pair of the vertical grooves 5, the metal electrode 6 is inserted into the two corresponding vertical grooves 5, the shape and the size of the rectangular insulation paper 7 are as same as that of the metal electrode 6 made of brass, and the rectangular insulation paper 7 is tightly attached to one face of the metal electrode 6 made of the brass, opposite to the organic glass electrode base seat 2.
Description
Technical field
The present invention relates to a kind of discharge test device, and in particular to a kind of paper oil insulation local discharge test device.
Background technology
Paper oil insulation has a wide range of applications in power system.However, due to the insulation defect initiation office inside oilpaper
Portion discharges, and causes insulant performance degradation and the accident that finally punctures happens occasionally.Therefore, have many exhausted with regard to oilpaper at present
The research of edge shelf depreciation.Due to the irrecoverability that paper oil insulation punctures, typically test in the little Defect Modes containing lubricating cup
Carry out on type device.Lubricating cup in existing device often exist between high-pressure side needle electrode and grounded metal ground electrode away from
From being difficult to control to, the problems such as individual insulating paper is difficult to ensure that pressing.
Additionally, the thrust between insulating paper and metal polar plate is vertically to apply, when causing evacuation, bubble without
Method departs from insulating paper and air gap is formed between paper and metal polar plate, affects experimental result.
The content of the invention
Problem to be solved by this invention, is just to provide a kind of paper oil insulation local discharge test device, and it can be easily
The distance between adjustment high-pressure side needle electrode and grounded metal ground electrode, while ensureing under the conditions of various discharge tests, insulation
Paper can all flatten the position for being fixed on needs, will not float, and air gap also will not be formed between insulating paper and metal electrode；Conveniently grind
The different distance between high-pressure side needle electrode and grounded metal ground electrode is studied carefully to metallic projections, air gap, along various oil such as face
The impact of the Characteristics of Partial Discharge of insulation defect.
Above-mentioned technical problem is solved, the technical solution used in the present invention is as follows：
A kind of paper oil insulation local discharge test device, is characterized in that including：
One lucite lubricating cup 1, in cuboid box-shaped, top surface is lid 3 on lucite, in the inner side correspondence of two long side walls
Equal sized vertical slot 5 at least 2 pairs is provided with, the center of lid 3 is provided with the screw thread of external evacuation ball valve 4 on described lucite
Hole, screwed hole both sides have the patchhole of insertion high pressure termination electrode 8 and ground connection termination electrode 9；
One lucite electrode base 2, it is the long rectangular flat that a screwed hole is provided with plate, shape size and thickness pair
In a pair of vertical slots 5 that should be described and described a pair of the vertical slots 5 of insertion；
One pyrite material metal electrode 6, is a long rectangular plate, and described a pair of the vertical slots 5 of shape size and thickness correspondence are simultaneously
Insertion is another in vertical slot 5；
Thickness<The rectangular dielectric paper 7 of 0.1mm, shape size is identical with the pyrite material metal electrode 6, and it is close to
One side of the pyrite material metal electrode 6 in the face of lucite electrode base 2；
One evacuation ball valve 4, is connected to the center of lid 3 screwed hole on the lucite；With
High pressure termination electrode 8 and ground connection termination electrode 9 each, are L-shaped threaded screw rod, and its vertical section is inserted respectively described organic
The high-pressure side electrode-inserting holes and earth terminal electrode-inserting holes of glass top cover 3, lower crosspiece insert respectively the lucite electrode
Pedestal 2 and contact with pyrite material metal electrode 6.
Described glass top cover 3 is connected with described cuboid box-shaped lubricating cup 1 for flange.
It is equidistant between described vertical slot 5.
The evacuation ball valve 4 covered on described lucite is the ball valve of pyrite material 1/4.
The hole of lid 3 is M8 screwed holes on described electrode base 2, lucite, described high pressure termination electrode and ground connection
Termination electrode is M8 threaded screw rods.
Beneficial effect：
1. lubricating cup and upper lid are made using lucite material, are easy to observe shelf depreciation situation；
2. by being equal with the thickness of plate electrodes by the width setup of vertical slot, it is ensured that be stuck in vertical slot inwall with gold
The compression of the insulating paper between category plate electrode outer wall.Because thrust is to apply in the horizontal direction, therefore during evacuation, bubble meeting
Escape up pasta, it is to avoid the air gap formed between insulating paper and metal electrode；
3. due between each vertical slot distance determine, therefore only need to by the plate electrode vertical slot different with electrode base insertion,
Just the high-pressure side needle electrode that can easily study connection electrode pedestal is exhausted to oilpaper with the distance between the plate electrodes of ground connection
The impact of edge shelf depreciation.
Description of the drawings
Below in conjunction with the accompanying drawings the present invention is described in further detail with specific embodiment.
Fig. 1 is the schematic front view that the present invention is inserted with plate；
Fig. 2 removes the side view of plate and part 4 for Fig. 1；
Fig. 3 removes the top view of part 4, top cover and plate for Fig. 1；
Fig. 4 is the plate front view of the present invention；
Fig. 5 is the top view of top cover；
Fig. 6 is the side view of the present invention；
Fig. 7 is the shelf depreciation PRPD spectrogram of the present invention；
Fig. 8 is partial discharge pulse's time-domain diagram of the present invention；
Fig. 9 is partial discharge pulse's frequency domain figure of the present invention.
Reference：1- lubricating cups, 2- electrode bases are covered, 4- evacuation ball valves, 5- vertical slots, 6- pyrite material metals on 3-
Electrode, 7- insulating papers, 8- high pressure termination electrodes, 9- ground connection termination electrodes；
Specific embodiment
A kind of paper oil insulation local discharge test device as shown in Fig. 1 ~ 6, is characterized in that including：
One lucite lubricating cup 1, in cuboid box-shaped, top surface is lid 3 on lucite, in the inner side correspondence of two long side walls
Equal sized vertical slot 5 at least 2 pairs is provided with, the center of lid 3 is provided with the screw thread of external evacuation ball valve 4 on described lucite
Hole, screwed hole both sides have the patchhole of insertion high pressure termination electrode 8 and ground connection termination electrode 9；
One lucite electrode base 2, it is the long rectangular flat that a screwed hole is provided with plate, shape size and thickness pair
In a pair of vertical slots 5 that should be described and described a pair of the vertical slots 5 of insertion；
One pyrite material metal electrode 6, is a long rectangular plate, and described a pair of the vertical slots 5 of shape size and thickness correspondence are simultaneously
Insertion is another in vertical slot 5；
Thickness<The rectangular dielectric paper 7 of 0.1mm, shape size is identical with the pyrite material metal electrode 6, and it is close to
One side of the pyrite material metal electrode 6 in the face of lucite electrode base 2；
One evacuation ball valve 4, is connected to the screwed hole of the center of lid 3 on the lucite；With
High pressure termination electrode 8 and ground connection termination electrode 9 each, are L-shaped threaded screw rod, and its vertical section is inserted respectively described organic
The high-pressure side electrode-inserting holes and earth terminal electrode-inserting holes of glass top cover 3, lower crosspiece insert respectively the lucite electrode
Pedestal 2 and contact with pyrite material metal electrode 6.
Preferably, described glass top cover 3 is connected with described cuboid box-shaped lubricating cup 1 for flange.
Preferably, it is equidistant between described vertical slot 5.
Preferably, the evacuation ball valve 4 for covering on described lucite is the ball valve of pyrite material 1/4.
Preferably, the hole of lid 3 is M8 screwed holes, described high pressure termination electrode on described electrode base 2, lucite
M8 threaded screw rods are with ground connection termination electrode.
When using a kind of defect model for paper oil insulation partial discharge test of the present utility model, first will be with high pressure
Termination electrode 8 is assemblied in the screwed hole of electrode base 2, and electrode base 2 is inserted in a pair of the vertical slots 5 on lubricating cup wall.Will be exhausted
Edge paper 7 is fitted with the one side of pyrite material metal electrode 6, and it is inserted another with certain distance with electrode base 2 jointly
In a pair of vertical slots 5, described insulating paper 7 is set to face lucite electrode base 2.By one end of ground connection termination electrode and pyrite material
Metal electrode 6 does not contact with the one side of insulating paper 7.Insulating oil is injected in lubricating cup.After upper lid 3 is covered, open thereon
Evacuation ball valve 4, evacuation is stood after 24h, and high pressure termination electrode 8 and ground connection termination electrode 9 are connected respectively into high voltage power supply and ground wire,
Proceed by partial discharge test.
Result of the test according to Fig. 6-8 shows, in a kind of device of paper oil insulation partial discharge test of the present invention
In the PRPD spectrograms of shelf depreciation that carry out meet the feature that shelf depreciation in oil occurs mainly in voltage rising edge.Meanwhile, lead to
Crossing carries out the frequency-domain analysiss result after fast Fourier transform to local discharge pulse signal and shows that its discharge energy is mainly concentrated
Between 10MHz-30MHz, while also there is certain distribution at 40MHz.Time domain beamformer shows partial discharge pulse form master
Be to be superimposed with many high frequency spikes in an Exponential Decay Wave, this also with the canonic form phase of shelf depreciation in oil
Together.To sum up, may certify that this new lubricating cup fully meets current test requirements document by experimental result.
Claims (5)
1. a kind of paper oil insulation local discharge test device, is characterized in that including：
One lucite lubricating cup（1）, in cuboid box-shaped, top surface is to cover on lucite（3）, in the inner side correspondence of two long side walls
It is provided with equal sized vertical slot（5）At least 2 pairs, cover on described lucite（3）Center is provided with external evacuation ball valve（4）With
Screwed hole, screwed hole both sides have insertion high pressure termination electrode（8）With ground connection termination electrode（9）Patchhole；
One lucite electrode base（2）, it is the long rectangular flat that a screwed hole is provided with plate, shape size and thickness correspondence
A pair of vertical slots（5）And a pair of vertical slots described in inserting（5）In；
One pyrite material metal electrode（6）, it is a long rectangular plate, shape size and corresponding a pair of the described vertical slots of thickness（5）And
Insertion is another to vertical slot（5）In；
Thickness<The rectangular dielectric paper of 0.1mm（7）, shape size and the pyrite material metal electrode（6）Identical, it is close to
The pyrite material metal electrode（6）In the face of lucite electrode base（2）One side；
One evacuation ball valve（4）, it is connected on the lucite and covers（3）The screwed hole of center；With
High pressure termination electrode（8）With ground connection termination electrode（9）Each one, L-shaped threaded screw rod is, its vertical section is inserted respectively described organic
Glass top cover（3）High-pressure side electrode-inserting holes and earth terminal electrode-inserting holes, lower crosspiece insert lucite electricity respectively
Pole base（2）And with pyrite material metal electrode（6）Contact.
2. a kind of paper oil insulation local discharge test device according to claim 1, wherein described glass top cover（3）With
Described cuboid box-shaped lubricating cup（1）For flange connection.
3. a kind of paper oil insulation local discharge test device according to claim 1, wherein described vertical slot（5）Between be
Equidistantly.
4. a kind of paper oil insulation local discharge test device according to claim 1, wherein covering on described lucite
Evacuation ball valve（4）For the ball valve of pyrite material 1/4.
5. a kind of paper oil insulation local discharge test device according to claim 1, wherein described electrode base（2）、
Cover on lucite（3）Hole be M8 screwed holes, described high pressure termination electrode and ground connection termination electrode is M8 threaded screw rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510022198.8A CN104698349B (en) | 2015-01-16 | 2015-01-16 | Paper oil insulation partial discharge test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510022198.8A CN104698349B (en) | 2015-01-16 | 2015-01-16 | Paper oil insulation partial discharge test device |
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| CN104698349A CN104698349A (en) | 2015-06-10 |
| CN104698349B true CN104698349B (en) | 2017-04-12 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572550B (en) * | 2015-12-18 | 2019-01-22 | 平高集团有限公司 | A kind of insulation test specimen and the test electrode apparatus using the insulation test specimen |
| CN105974286B (en) * | 2016-06-29 | 2019-06-18 | 国家电网公司 | Paper oil insulation is along face gliding spark discharge experimental rig |
| CN111679207B (en) * | 2020-05-09 | 2023-03-14 | 军事科学院系统工程研究院军事新能源技术研究所 | Metal-air battery and discharge test system |
| CN112731074B (en) * | 2020-12-17 | 2023-08-01 | 深圳供电局有限公司 | Oilpaper insulation aging test system |
| CN113092967A (en) * | 2021-04-12 | 2021-07-09 | 哈尔滨理工大学 | Solid insulation medium and inorganic powder macroscopic interface creeping discharge test system |
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| JP2002148300A (en) * | 2000-11-10 | 2002-05-22 | Matsushita Electric Ind Co Ltd | Method and device for nondestructive insulation testing of small-sized electric machine |
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| CN101957423A (en) * | 2010-09-16 | 2011-01-26 | 中国电力科学研究院 | Device for testing insulating property of high-voltage oiled paper |
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