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Artificial simulating pollution for live water washing test of power transmission and transformation equipment and its preparation method

A power transmission and transformation equipment, artificial simulation technology, applied in the direction of measuring electricity, measuring electrical variables, instruments, etc., can solve the problems of easy current conduction, single composition of conductive materials and inert materials, flashover, etc.

Active Publication Date: 2016-05-25
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) The conductive substance and the inert substance have a single composition, which is quite different from the pollution composition under natural conditions, which cannot reflect the real situation of the test
[0005] 2) The adhesion of the dirt is not strong. During the cleaning process, when the amount of flushing water is large, a column of salt water is formed, which flows down in strands, making the current easy to conduct and flashover

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The Yuhang area of ​​Zhejiang Province is a sulfuric acid rain area, and the ash density value of power transmission and transformation equipment pollution is 2.86mg / cm 2 , the salt density value is 0.45mg / cm 2 , where the main salt is divided into SO 4 2- Ions, the conductivity measured by sampling is 1680μs / cm. Preparation of artificial simulated pollution: choose 100g of fly ash from a power plant in Zhejiang as the base material, add 15.7g of Na 2 SO 4 as a conductive substance to provide sufficient SO 4 2- ions, then add 463mL of demineralized water according to the ratio of gray to water 1:4, and finally add 2% adhesive PVA, mix and stir evenly to prepare artificially simulated pollution.

[0021] The artificially simulated pollution is uniformly coated on the power transmission and transformation equipment with an automatic coating device. The surface state and washing resistance are relatively close to those of the natural pollution power transmission and ...

Embodiment 2

[0023] The Zhoushan area of ​​Zhejiang Province is a marine climate area, and the dust density value of the pollution of power transmission and transformation equipment is 0.55mg / cm 2 , the salt density value is 0.3mg / cm 2 , in which the main salt is Cl - , SO 4 2- Ions, the conductivity measured by sampling is 1123μs / cm. Preparation of artificial simulated pollution: choose 100g of fly ash from a power plant in the coast of Zhejiang as the base material, add 30gNaCl, 23gNa 2 SO 4 as a conductive substance to provide sufficient Cl - , SO 4 2- ions, then add 612mL of demineralized water according to the ratio of gray to water 1:4, and finally add 1% adhesive PVA, mix and stir evenly to prepare artificially simulated pollution.

[0024] The artificially simulated pollution is evenly coated on the power transmission and transformation equipment with an automatic coating device. The surface condition and washing resistance are relatively close to those of the natural pollu...

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PUM

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Abstract

The invention discloses an artificially simulated pollution used for a live water flushing test of power transmission and transformation equipment and a preparation method thereof. The current artificially simulated pollution is quite different from the pollution under natural conditions, which cannot reflect the real situation of the test; the adhesion of the pollution is not strong, and when the amount of flushing water is large, it will form a column containing salt water and flow down in strands, making the current easy to conduct. A flashover occurs. The present invention is characterized in that the artificially simulated pollution includes base materials, conductive substances, adhesives and desalinated water; the base material is selected from power plant fly ash which is close to the ionic components in the natural pollution to be simulated; the The conductive substance is selected as a strong electrolyte; the adhesive is selected as a viscous polymer organic matter that has no effect on the conductivity of artificially simulated pollution. The artificially simulated pollution of the present invention has a certain adhesive force, can well simulate the actual situation of natural pollution and test conditions, and is suitable for the experimental research of washing with charged water for power transmission and transformation equipment.

Description

technical field [0001] The invention relates to the field of testing of power transmission and transformation equipment, in particular to an artificial simulated pollution used in a live water flushing test of power transmission and transformation equipment and a preparation method thereof. Background technique [0002] With the improvement of the operating voltage of the power system and the expansion of the power grid, more and more insulators are used for line insulation. Because line insulators are exposed to the air for a long time, it is easy to deposit dirt on its surface. The dirt contains electrolytic substances. Under humid weather conditions such as fog, dew, and rain, the electric strength of the insulator is greatly reduced, and the external insulation of the power system may be damaged. Under the action of overvoltage, flashover occurs, causing blackout accidents, and causing harm to the normal operation of the power system. This makes everyone realize the impo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/20
Inventor 钱洲亥祝郦伟陈建伟沈晓明周海飞吴芳芳
Owner STATE GRID CORP OF CHINA