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Composite insulating-material tracking and electrical erosion resistance performance determination method

A technology of tracking resistance and composite insulation, applied in the direction of testing dielectric strength, etc., can solve the problems of accelerated aging test, difficulty and so on

Active Publication Date: 2016-05-25
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, tracking on the surface of materials may be caused by various forms of discharge. It is very difficult to perform accelerated aging tests in the laboratory to restore the natural aging process of materials to the greatest extent.

Method used

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  • Composite insulating-material tracking and electrical erosion resistance performance determination method
  • Composite insulating-material tracking and electrical erosion resistance performance determination method
  • Composite insulating-material tracking and electrical erosion resistance performance determination method

Examples

Experimental program
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Embodiment 1

[0030] (1) Silicone rubber composite material sample preparation: the silicon rubber material is made into a cuboid sample 1, and the size of the sample 1 is 120mm long*50mm wide*6mm thick. Keep the surface of sample 1 clean and dry.

[0031] (2) Install electrode 2: There are 3 electrodes 2 in total, two of which are the test electrodes 2 specified in GB / T6553 and a cuboid is added on the basis of the two electrodes 2 (that is, the contact between the bottom and the sample 1) part, so that the electric field on the surface of the material is distorted to cause a partial discharge point. The pressurized platform used is the test pressurized platform built under the condition of the test electrode 2 specified in GB / T6553.

[0032] (3) Artificial pollution configuration: Four materials were selected to simulate different components of pollution, including not only conventional diatomite and sodium chloride, but also simple carbon and metal nickel to simulate special pollution c...

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Abstract

The invention relates to a composite insulating-material tracking and electrical erosion resistance performance determination method. The method comprises the following steps that (1) a silicone rubber material to be tested is made into a cuboid sample (1) and the sample (1) is numbered; (2) three kinds of filths with different components are configured; (3) the obtained three kinds of filths are sprayed to the three samples (1) respectively and drying is performed; (4) the three samples (1) which are sprayed with the filths are installed on a pressurization platform, after an assigned voltage is pressurized, timekeeping is started and the voltage is maintained to be constant for 15 min, and during this period, an environment temperature is controlled to be 28 DEG C, a relative humidity is 65-70%, a discharge phenomenon is observed and a high voltage end current is recorded. By using the method, the tracking and electrical erosion resistance performance of a silicone rubber composite insulating material operated in a special filth condition can be determined and selected, and an influence of the special filth condition on surface discharge of a composite insulating material surface is considered and equivalence is good.

Description

technical field [0001] The invention relates to a method for judging the tracking resistance and electric corrosion performance of a composite insulating material. Background technique [0002] Silicone rubber materials are commonly used insulating materials in power systems, and are widely used in composite insulators, anti-pollution flashover coatings, cable terminal accessories, etc. However, silicone rubber is an organic polymer material, which is susceptible to aging due to factors such as electric field, light, and humidity during long-term operation. The problems of tracking and electrical erosion are the main factors for the aging of composite insulating materials. Therefore, the accelerated aging test of the tracking resistance of composite insulating materials is very important. However, tracking on the surface of materials may be caused by various forms of discharge. It is very difficult to perform accelerated aging tests in the laboratory to restore the natural...

Claims

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Application Information

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IPC IPC(8): G01R31/12
Inventor 王博马飞越田禄周秀王海龙刘威峰李奇超
Owner STATE GRID CORP OF CHINA
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