Evaluation method for corrosion state of in-service power transmission line rod tower and metal framework

Abstract

The invention relates to the technical field of electric power equipment detection and in particular relates to an evaluation method for a corrosion state of an in-service power transmission line rodtower and a metal framework. The evaluation method comprises the following steps: detecting each evaluation index of corrosion prevention performance and the substrate thickness of coating and platinglayers of the power transmission line rod tower and the metal framework; then calculating a deduction value of each index respectively and counting the deduction values according to a determined corrosion grade of a service environment of the power transmission line rod tower and the metal framework and a detection result, so as to obtain a deterioration degree; and comprehensively evaluating thecorrosion state of the in-service power transmission line rod tower and the metal framework. According to the evaluation method provided by the invention, the surface state and the corrosion degree of the coating and plating layer are evaluated according to the service environment, so that the corrosion state of the in-service power transmission line rod tower and the metal framework is evaluated. By adopting the evaluation method, the corrosion state of the in-service power transmission line rod tower and the metal framework can be evaluated, the evaluation is more accurate, and replacementor reinforcement and corrosion prevention treatment is carried out on the transmission line rod tower and the metal framework in time, so that the operation risks of power grids are reduced.

Description

technical field [0001] The invention relates to the technical field of power equipment detection, in particular to a method for evaluating the corrosion status of towers and metal frames of in-service transmission lines. Background technique [0002] Transmission line towers and metal structures mainly play the role of supporting transmission lines or power grid equipment in the power grid, and are widely distributed in various environments, which are easy to cause corrosion, failure and tower collapse accidents, which have a huge impact on the safe and stable operation of the power grid. However, there are currently no relevant regulations and standards for the extent to which transmission line towers and metal structures are corroded and need to be repaired. They usually rely on the relevant experience of inspection personnel to judge, and sometimes miss the best time for maintenance. Retrieve the patents "Method for Predicting Corrosion Life of Fittings of Transmission Li...

AI Technical Summary

Problems solved by technology

Therefore, although this method can predict accurately, the requirements are too high, and it is difficult for ordinary personnel on site to master

More importantly, the current testing and evaluation standards do not treat them differently according to the degree of corrosion, and all adopt unified testing and evaluation standards.

In addition, the detection standard does not consider the detection of the coating impedance, which is directly related to the corrosion resistance of the coating.

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