Comprehensive evaluation method of erosion condition of electric transmission and transformation equipment earthing material

Abstract

The invention discloses a comprehensive evaluation method of erosion condition of an electric transmission and transformation equipment earthing material. According to the comprehensive evaluation method, when the pH value of soil in which an earthing device is buried is less than 6.8, the erosion degree of an earthing material is large; when the pH value of soil in which the earthing device is buried is greater than or equal to 6.8 and the moisture content of soil in which the earthing device is buried is greater than or equal to 35%, the erosion degree of the earthing material is small; and when the pH value of soil in which the earthing device is buried is greater than or equal to 6.8 and the moisture content of soil in which the earthing device is buried is less than 35%, and soil resistivity, reduction-oxidation potential, material corrosion potential, chloride ion content and sulfate radical content of soil in which earthing materials is buried are researched. The evaluation method provided by the invention is an on-site testing method of erosion resistance of an earthing material, a test person can know the corrosion condition of the earthing material in a short time when the test person carries a simple analytical apparatus, the evaluation method is simple and practical, and the test result is exact.

Description

1. Technical field [0001] The invention relates to a corrosion evaluation method for buried metal components, in particular to a corrosion evaluation method for grounding devices of power transmission and transformation equipment. According to the soil resistivity, soil redox potential, corrosion potential of metal materials, chloride ions and sulfate radicals in the soil where the grounding device of power transmission and transformation equipment is buried, a comprehensive evaluation method for the health status of the grounding device of power transmission and transformation equipment is established. It is suitable for corrosion evaluation of grounding devices of power transmission and transformation equipment, and the invention can also comprehensively evaluate the corrosion status of buried metal components. 2. Background technology [0002] The grounding device of power transmission and transformation equipment is the unity of working grounding, protection grounding an...

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Problems solved by technology

This kind of maintenance according to time is poorly targeted. If unnecessary maintenance is carried out, it will cause a lot of waste of manpower and material resources.

This is because the grounding device is a concealed project buried underground, and the excavation and inspection work is huge, time-consuming and labor-intensive.

If the grounding device should be inspected and repaired due to corrosion, it will not only miss a good time to take protective measures and prolong the life of the grounding device, but also cause a major safety hazard due to the degradation of the grounding performance of the grounding device.

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