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Method for measuring operating insulator contamination degree

A measurement method and technology for insulators, which are applied in the direction of material absorption and weighing, material impedance, etc., can solve the problems of long filtration time and inconvenient insulator pollution sampling, and achieve the improvement of measurement accuracy, shorten pollution measurement time, and speed up pollution filtering speed. Effect

Inactive Publication Date: 2015-11-18
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing dirty sampling method uses distilled water or deionized water for scrubbing, which is not convenient for dirty sampling of running insulators
At the same time, the existing method is to use natural filtering, and the filtering time is longer

Method used

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  • Method for measuring operating insulator contamination degree
  • Method for measuring operating insulator contamination degree

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Measurement of pollution degree of a bell jar type porcelain insulator coated with RTV paint:

[0037] 1) Sampling:

[0038] Use alcohol-containing absorbent cotton to scrub the upper and lower surfaces of the insulator respectively, and the scrubbing time is 10 minutes, so as to ensure that the insoluble contamination has enough time to dissolve in alcohol. Put the absorbent cotton containing dirt into the sample bag and seal it for the equivalent salt density and gray density test.

[0039] 2) Cleaning:

[0040] Take 500ml of deionized water (the specific water consumption can be determined according to the degree of contamination of the absorbent cotton), use 200ml of deionized water to wash the contaminated absorbent cotton for the first time, wring out the absorbent cotton; then use 200ml of deionized water to wash the absorbent cotton for the second time, and put Wring out the absorbent cotton after cleaning. The container was rinsed with 50 ml of de...

Embodiment 2

[0045] Example 2: Measurement of pollution degree of large and small umbrella composite insulators:

[0046] 1) Sampling:

[0047] The upper and lower surfaces of the insulator are scrubbed with alcohol-containing absorbent cotton for 5 minutes, so as to ensure that the insoluble contamination has enough time to dissolve in alcohol. Put the absorbent cotton containing dirt into the sample bag and seal it for the equivalent salt density and gray density test.

[0048] 2) Cleaning:

[0049]Take 300ml of deionized water (the specific water consumption can be determined according to the degree of contamination of the absorbent cotton), use 125ml of deionized water to wash the contaminated absorbent cotton for the first time, wring out the absorbent cotton; then use 125ml of deionized water to wash the absorbent cotton for the second time, and put Wring out the absorbent cotton after cleaning. Rinse the container first with 25 ml of deionized water, then rinse the container a se...

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Abstract

The invention discloses a method for measuring operating insulator contamination degree. The method includes: using alcohol containing absorbent cotton to scrub the foulant on the upper surface and lower surface of an insulator; determining the amount of distilled water or deionized water for washing the absorbent cotton, performing water equipartition to wash the absorbent cotton so as to reduce absorbent cotton foulant residue, and placing the foul solution in a foul solution memory; fully stirring the foul solution, and controlling the stirring time at 10min-30min; drying and weighing the filter paper used in filtration; filtering the foul solution with a filter unit, taking the filtered clear solution, and measuring the electric conductivity of the filtered clear solution to obtain the equivalent salt deposit density of the insulator; drying the filter paper, and weighing the dried filter paper, thus obtaining the insulator non-soluble deposit density. The method is simple, and employs the alcohol containing absorbent cotton to sample the insulator surface foulant. The absorbent cotton is washed repeatedly by water to reduce the absorbent cotton foulant residue, thus ensuring measurement precision. A vacuum pump is utilized to increase the foul solution filtration rate, thereby greatly reducing the foulant filtration time.

Description

technical field [0001] The invention belongs to the technical field of transmission line operation detection, and in particular relates to a method for measuring the pollution degree of an operating insulator. Background technique [0002] Pollution accumulation has a very important impact on the overall performance of insulators in actual operation. On the one hand, it determines the pollution flashover resistance of insulators in operation. On the other hand, it directly affects the aging of materials such as RTV coatings and composite insulators, such as tracking and electrical corrosion. The occurrence and development of the phenomenon is one of the important indicators reflecting the performance of the insulator in actual operation. [0003] At present, there is no effective method at home and abroad to improve the measurement speed of the pollution degree of insulators in operation. The existing dirty sampling method uses distilled water or deionized water for scrubbi...

Claims

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Application Information

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IPC IPC(8): G01N5/02G01N27/02
Inventor 刘辉沈庆河刘怀宇张若兵姚金霞刘嵘寇梅如胡晓黎段玉兵张皓许光可张围围
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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