Method for spraying contamination on insulator surface

An insulator and pollution technology, which is used in the field of spray pollution test on the surface of power equipment, can solve the problems of equivalent salt density and equivalent gray density error, etc.

Active Publication Date: 2019-07-26
CHINA ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention proposes a pollution spraying method for insulators, aiming to solve the problem of relatively large errors in equivalent salt density and equivalent gray density at different positions on the surface of insulators in existing insulator surface contamination tests

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  • Method for spraying contamination on insulator surface
  • Method for spraying contamination on insulator surface
  • Method for spraying contamination on insulator surface

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Embodiment Construction

[0031] The following description is a preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered Be the protection scope of the present invention.

[0032] refer to figure 1 , the pollution spraying method of insulator provided by the present invention, comprises the following steps:

[0033] Step S1, according to the preset equivalent salt density, weigh the conductive substance, the inert substance, the adhesive and the solvent in the preset ratio to prepare the dirty solution.

[0034] Specifically, the equivalent salt density (ESDD) is an important parameter to characterize the degree of contamination on the surface of an insulator. Use a certain amount of deionized water to clean the contamination on the surface of the insulator, and then measure th...

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Abstract

The present invention provides a method for spaying contamination on insulator surface, the method comprises following steps: according to a predetermined equivalent salt deposit density and non soluble deposit density, weighing a predetermined proportion of conductive substances, inert substances, adhesives and solvents to prepare contamination solutions; while maintaining temperature of the insulator surface to be sprayed lower than the temperature of the contamination solutions and setting temperature difference between the two as a first predetermined value, uniformly spraying the contamination solutions on the insulator surface to be sprayed to control error of an actual equivalent salt deposit density and the predetermined equivalent salt deposit density to a first predetermined range. The method controls the temperature difference between the insulator surface to be sprayed and the surface of the contamination solutions, so that the error between the equivalent salt deposit density and the test predetermined value is small, thereby ensuring accuracy of the equivalent salt deposit density of the insulator surface in the insulator contamination test.

Description

technical field [0001] The invention relates to the technical field of spraying dirt on the surface of electric equipment, in particular to a method for spraying dirt on the surface of an insulator. Background technique [0002] The external insulation of transmission lines and substations is required to be able to operate reliably under atmospheric overvoltage, internal overvoltage and long-term operating voltage. The electrical strength of the power system is greatly reduced, which may cause flashover of the external insulation of the power system under the action of overvoltage, and pollution flashover under long-term operating voltage, resulting in power outages. Pollution flashover is the main threat to the safe operation of the power system. Among the discharges such as pollution flashover, wet flashover, ice flashover, lightning flashover, and operation impact flashover, pollution flashover is the most harmful to the power system. The loss is more than 10 times that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1245
Inventor 于昕哲邓方亮周军徐跃能
Owner CHINA ELECTRIC POWER RES INST
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