Corona aging acceleration device and method for polymer insulating material

A technology of insulating materials and corona aging, which is applied in the direction of testing the dielectric strength, etc., can solve the problems of little research on the mechanism of aging, insufficient scientific considerations, and poor operability, etc., to achieve corona discharge current monitoring, The effect of low experimental conditions and easy quantitative control

CN103278752AInactive Publication Date: 2013-09-04XI AN JIAOTONG UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-09-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a corona aging acceleration device and a corona aging acceleration method for a polymer insulating material. The device comprises a sealed corona aging experimental case in which a pin array electrode and a metal plate electrode are arranged, wherein the pin array electrode is connected with a high voltage generation device; the metal plate electrode is grounded; a pinpoint array is arranged on the pin array electrode; a test sample is arranged on the metal plate electrode, and is opposite to the pinpoint array; and after voltage is applied, uniform corona discharge is generated between the pin array electrode and the metal plate electrode to perform corona aging on the test sample. The device and the method have the advantages of low requirements on experimental conditions, convenience for operation and quantitative control over aging factors in an experiment, and short experimental period, and are applied to researches on the corona aging resistance of insulating materials in a laboratory.
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Description

technical field

[0001] The invention belongs to the technical field of artificial accelerated aging of polymer insulating materials, and relates to a device and method for accelerated corona aging of polymer insulating materials. Background technique

[0002] Polymer insulating materials have good dielectric properties such as high DC resistance, low dielectric loss, good thermal stability and excellent machinability, so they are widely used in the field of electrical insulation. Silicone rubber material is an excellent polymer insulating material, which is widely used in the field of power system external insulation and cable accessories manufacturing. In the field of external insulation of power systems, high-temperature vulcanized silicone rubber materials are used as shed and sheath materials of composite insulators, which have good hydrophobicity, hydrophobic migration and pollution resistance, which greatly improves the pollution flashover resistance of insulators. , ...

Examples

Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0031] see figure 1 , 2 and 3, the device for accelerated corona aging of polymer insulating materials provided by the present invention comprises a closed corona aging test box 7, and a needle array electrode 10 and a metal plate electrode 11 are arranged in the corona aging test box 7; The array electrode 10 is connected with the high-voltage generating device, and the metal plate electrode 11 is grounded; the needle array electrode 10 is provided with a needle point array, and the sample 13 is placed on the metal plate electrode 11 and facing the needle point array; after the voltage is applied, the needle array electrode 10 A uniform corona discharge is generated between the metal plate electrode 11 and the sample 13 is subjected to corona aging.

[0032] Specifically, by applying high v...