Method for measuring equivalent salt deposit density of high-voltage insulator

A high-voltage insulator, equivalent salt density technology, applied in the direction of material resistance, etc., can solve the problem of not being able to contaminate the description of equivalent salt density value, and unable to describe the contamination law on the surface of strong hydrophobic insulators well, to avoid errors and improve. The effect of accuracy

Active Publication Date: 2013-09-04
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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Problems solved by technology

[0004] The two methods for measuring the equivalent salt density of insulators with strong hydrophobic surfaces are destructive to the insulator surface pollution layer, so they can only measure the equivalent salt density of the insulat

Method used

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  • Method for measuring equivalent salt deposit density of high-voltage insulator
  • Method for measuring equivalent salt deposit density of high-voltage insulator
  • Method for measuring equivalent salt deposit density of high-voltage insulator

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Embodiment Construction

[0042] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0043] figure 1 It is a flowchart of a method for measuring equivalent salt density of high-voltage insulators according to an embodiment of the present invention. The method includes:

[0044] Step 101: Evenly divide the surface of the high-voltage insulator to be tested into multiple regions, and in each region, randomly select one location as a measurement point.

[0045] The insulator includes multiple sheds. For each shed, the partition method of four zones and three rings is adopted. figure 2 It is a schematic diagram of the partitioning of each shed of the insulator provided by the embodiment of the present invention. As shown in the figure, one shed of the high-voltage insulator to be tested is partiti...

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Abstract

The invention provides a method for measuring equivalent salt deposit density of a high-voltage insulator. The method comprises the following steps of uniformly dividing the surface of a high-voltage insulator needing to be detected into multiple regions, selecting any measurement point in each one of the multiple regions, eliminating hydrophobicity of the measurement points, spraying a water film on the measurement points without hydrophobicity, measuring local surface conductivity of the measurement points, calculating average local surface conductivity by the local surface conductivity of the measurement points, and calculating equivalent salt deposit density of the high-voltage insulator by the average local surface conductivity. The method realizes measurement of equivalent salt deposit density of a high-voltage insulator having a strong-hydrophobicity surface without destroy on an insulator dirt layer structure. Through the method, a researcher can carry out long-term measurement of the same measurement points. The method is convenient for summarization of a dirt accumulation law, avoids errors caused by other methods in transport and improves measurement accuracy.

Description

Technical field [0001] The invention relates to the technical field of high voltage and insulation, in particular to a method for measuring the equivalent salt density of high voltage insulators. Background technique [0002] Due to the deterioration of environmental conditions year by year and the increase of voltage levels, the power system has put forward higher requirements for the occurrence of pollution flashover accidents. The equivalent salt density on the surface of the insulator is an important factor that affects the pollution flashover voltage. Therefore, its measurement and monitoring is very necessary. In high-voltage lines, composite insulators (high temperature vulcanized silicone rubber, HTV) and room temperature vulcanized silicone rubber (room temperature vulcanized silicone rubber, RTV) materials of electrical porcelain insulators are widely used, because the insulator surface of these silicone rubber materials has good Hydrophobicity and unique hydrophobicit...

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Application Information

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IPC IPC(8): G01N27/04
Inventor 王黎明项阳郭晨鋆赵宇明梅红伟李岩戴罕奇
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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