CN110749804A - Multi-pin plate electrode for artificial uniform corona accelerated aging test of composite insulator - Google Patents
Multi-pin plate electrode for artificial uniform corona accelerated aging test of composite insulator Download PDFInfo
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- CN110749804A CN110749804A CN201810809141.6A CN201810809141A CN110749804A CN 110749804 A CN110749804 A CN 110749804A CN 201810809141 A CN201810809141 A CN 201810809141A CN 110749804 A CN110749804 A CN 110749804A
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- electrode
- pin
- plate
- plate electrode
- composite insulator
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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
- G01R31/1227—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 of components, parts or materials
- G01R31/1245—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 of components, parts or materials of line insulators or spacers, e.g. ceramic overhead line cap insulators; of insulators in HV bushings
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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
- G01R31/16—Construction of testing vessels; Electrodes therefor
Abstract
The invention belongs to the technical field of electrode design, and particularly relates to a multi-pin plate electrode suitable for an artificial uniform corona accelerated aging test of a composite insulator. The upper electrode of the multi-needle plate electrode is a multi-needle electrode, and the lower electrode of the multi-needle plate electrode is a plate electrode; the upper and lower electrodes are supported by two acrylic glass plates as a support, holes are formed at four corners of the acrylic glass plates, and 4 sets of insulating bolts and insulating nuts are used for supporting; the multi-pin electrodes are connected and fixed on the acrylic glass plate by using aluminum foil paper, and the plate electrode is fixed on the other acrylic glass plate by a fixing bolt; the distance between the discharge gaps of the upper electrode and the lower electrode can be adjusted by using an insulating bolt and an insulating nut; a sample can be directly placed on the plate electrode; two groups of multi-pin plate electrodes are arranged, and the two groups of electrodes are spaced by 80 mm. The multi-pin plate electrode can be tested under any voltage form. The uniformity of the artificial corona accelerated aging test result can be ensured, the test time can be shortened, the aging efficiency is improved, and the evaluation efficiency of the aging degree of the composite insulator is improved.
Description
Technical Field
The invention belongs to the technical field of electrode design, and particularly relates to a multi-pin plate electrode suitable for an artificial uniform corona accelerated aging test of a composite insulator.
Background
The external insulating material of the composite insulator is organic, and when the surface of the composite insulator is subjected to continuous corona discharge, the composite insulator is aged, and related performances are affected. In the prior art, the aging condition of a field is simulated mostly through a laboratory composite insulator artificial corona accelerated aging test, so that the aging performance evaluation of the composite insulator is realized.
In the artificial corona accelerated aging test, the structure, parameters and the like of a corona discharge electrode directly determine the development process of discharge. The existing artificial corona aging method has the defects of long test time and low efficiency of simulating aging uniformity, so that the evaluation efficiency of the aging degree of the on-site composite insulator is reduced.
Therefore, the design of the test electrode is needed, which not only can efficiently present the corona discharge phenomenon, shorten the test time, but also can ensure the uniform corona aging on the surface of the composite insulator.
Disclosure of Invention
The invention designs the multi-pin plate electrode suitable for uniform corona accelerated aging of the composite insulator, which can shorten the test time and improve the aging evaluation efficiency of the composite insulator while obtaining a uniform corona aging result.
The technical scheme of the invention is as follows:
the upper electrode of the uniform corona accelerated aging electrode is a multi-needle electrode, and the lower electrode is a plate electrode; the upper and lower electrodes are supported by two acrylic glass plates as a support, holes are formed at four corners of the acrylic glass plates, and 4 sets of insulating bolts and insulating nuts are used for supporting; the multi-pin electrodes are connected and fixed on the acrylic glass plate by using aluminum foil paper, and the plate electrode is fixed on the other acrylic glass plate by a fixing bolt; the distance between the discharge gaps of the upper electrode and the lower electrode can be adjusted by using an insulating bolt and an insulating nut; a sample can be directly placed on the plate electrode; two groups of multi-pin plate electrodes are arranged, and the two groups of electrodes are spaced by 80 mm.
The multi-pin electrodes are uniformly distributed in a regular hexagonal area, wherein the diameter of the circumscribed circle is 96 mm.
The length of the multi-needle electrode is 6mm, the radius of the needle electrode is 0.5mm, the radius of curvature is 0.03mm, and the distance between the needles is 8 mm.
The plate electrode thickness is 5 mm.
The materials of the multi-pin electrode and the plate electrode are stainless steel.
The invention has the beneficial effects that:
the multi-pin plate electrode can be used for testing at any voltage. The uniformity of the artificial corona accelerated aging test result can be ensured, the test time can be shortened, the aging efficiency is improved, and the evaluation efficiency of the aging degree of the composite insulator is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a multi-pin plate electrode device according to the present invention.
Fig. 2 is a schematic structural view of the multi-needle electrode arrangement of the present invention.
Reference numbers in the figures:
1-an insulating bolt; 2-an insulating nut; 3-a multi-needle electrode; 4-aluminum foil paper; 5-acrylic glass plate; 6-sample; 7-a plate electrode; 8-fixing the bolt.
Detailed Description
The invention designs a multi-pin plate electrode suitable for uniform corona accelerated aging of a composite insulator, and the invention is further explained by combining the attached drawings and the specific implementation mode.
The overall structure of the multi-pin plate electrode is shown in fig. 1. The upper electrode of the uniform corona accelerated aging electrode is a multi-needle electrode 3, the lower electrode is a plate electrode 7, and the upper electrode and the lower electrode are made of stainless steel; the upper and lower electrodes are supported by two acrylic glass plates 5 as a support, holes are formed at four corners of each acrylic glass plate 5, and 4 sets of insulating bolts 1 and insulating nuts 2 are used for supporting; the multi-pin electrodes 3 are connected and fixed on an acrylic glass plate 5 by using aluminum foil paper 4, the multi-pin electrodes 3 are uniformly distributed in an area, the diameter of an circumscribed circle is 96mm, and the distribution area is in a regular hexagon shape, as shown in figure 2; the length of the multi-needle electrode 3 is 6mm, the radius of the needle electrode is 0.5mm, the radius of curvature is 0.03mm, and the distance between the needles is 8 mm; the plate electrode 7 is fixed on the other acrylic glass plate 5 by a fixing bolt 8, and the thickness of the plate electrode 7 is 5 mm; the distance between the discharge gaps of the upper electrode and the lower electrode can be adjusted by using an insulating bolt 1 and an insulating nut 2; the plate electrode 7 can be directly provided with a sample 6; two groups of multi-pin plate electrodes are arranged, and the two groups of electrodes are spaced by 80 mm.
When the multi-pin electrode is used, the position of the plate electrode 7 as a lower electrode is kept unchanged, and the vertical position of the multi-pin electrode 3 can be adjusted through the insulating bolt 1 and the insulating nut 2. In the whole set of the artificially accelerated uniform corona aging electrode, except the multi-pin electrode 3, the plate electrode 7 and the fixing bolt 8, other materials belong to high-strength insulating materials, so that the corona discharge process cannot be interfered. In the corona test, the sample can be directly placed on the plate electrode 7 after being cleaned. The multi-pin electrode 3 can be connected to a high-voltage lead end through a series protection resistor, and the plate electrode 7 can be connected to a low-voltage end through a series overcurrent protector, so that damage caused by accidental flashover of the multi-pin electrode in the corona discharge aging process is reduced. The structural arrangement of the multi-pin electrode 3 and the adjustment of the insulating bolt 1 and the insulating nut 2 on the discharge distance jointly ensure the uniformity and the high efficiency of the surface aging of the sample. The arrangement of two groups of multi-pin plate electrodes can lead the test to obtain more aging samples.
The basic use process is as follows:
(1) adjusting 4 sets of insulating bolts 1 and insulating nuts 2, adjusting the discharge space according to the test requirements, and reserving the height of the sample;
(2) connecting the multi-pin electrodes 3 of the two groups of multi-pin plate electrodes well by using a lead to obtain more aging samples;
(3) connecting a high-voltage lead to the multi-pin electrode 3, and connecting a low-voltage lead to a fixing bolt 8 of the plate electrode 7;
(4) the sample is placed on the plate electrode 7, and the whole multi-pin plate electrode device is horizontally placed, so that the manual accelerated uniform corona aging test can be carried out.
Claims (5)
1. The multi-pin plate electrode is used for the artificial uniform corona accelerated aging test of the composite insulator, the upper electrode is a multi-pin electrode (3), and the lower electrode is a plate electrode (7); the upper electrode and the lower electrode are supported by two acrylic glass plates (5), holes are formed at four corners of each acrylic glass plate (5), and 4 sets of insulating bolts (1) and insulating nuts (2) are used for supporting; the multi-pin electrodes (3) are connected and fixed on the acrylic glass plate (5) by using aluminum foil paper (4), and the plate electrode (7) is fixed on the other acrylic glass plate (5) by a fixing bolt (8); the distance between the discharge gaps of the upper electrode and the lower electrode can be adjusted by using an insulating bolt (1) and an insulating nut (2); the plate electrode (7) can be directly provided with a sample (6); two groups of multi-pin plate electrodes are arranged, and the two groups of electrodes are spaced by 80 mm.
2. The multi-pin plate electrode for the artificial uniform corona accelerated aging test of the composite insulator according to claim 1, wherein the multi-pin electrodes (3) are uniformly distributed in a regular hexagonal area with a circumscribed circle of 96mm in diameter.
3. The multi-pin electrode for the composite insulator artificial uniform corona accelerated aging test according to claim 1, wherein the length of the multi-pin electrode (3) is 6mm, the pin electrode radius is 0.5mm, the curvature radius is 0.03mm, and the pin-to-pin distance is 8 mm.
4. The multi-pin plate electrode for the artificial uniform corona accelerated aging test of the composite insulator according to claim 1, wherein the plate electrode (7) has a thickness of 5 mm.
5. The multi-pin plate electrode for the composite insulator artificial uniform corona accelerated aging test according to claim 1, wherein the multi-pin electrode (3) and the plate electrode (7) are made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809141.6A CN110749804A (en) | 2018-07-23 | 2018-07-23 | Multi-pin plate electrode for artificial uniform corona accelerated aging test of composite insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809141.6A CN110749804A (en) | 2018-07-23 | 2018-07-23 | Multi-pin plate electrode for artificial uniform corona accelerated aging test of composite insulator |
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| Publication Number | Publication Date |
|---|---|
| CN110749804A true CN110749804A (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810809141.6A Pending CN110749804A (en) | 2018-07-23 | 2018-07-23 | Multi-pin plate electrode for artificial uniform corona accelerated aging test of composite insulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326544A (en) * | 2020-10-28 | 2021-02-05 | 西安交通大学 | Electric corrosion test device and test method for generator stator end material |
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2018
- 2018-07-23 CN CN201810809141.6A patent/CN110749804A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326544A (en) * | 2020-10-28 | 2021-02-05 | 西安交通大学 | Electric corrosion test device and test method for generator stator end material |
| CN112326544B (en) * | 2020-10-28 | 2022-03-01 | 西安交通大学 | Electric corrosion test device and test method for generator stator end material |
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Application publication date: 20200204 |