Method for evaluating ablation degree of buried metal energy conveying pipeline under power frequency current

Abstract

The invention discloses a method for evaluating the ablation degree of a buried metal energy conveying pipeline under power frequency current. The method comprises the following steps of: firstly, carrying out an arc ablation simulation test, changing the specification of a pipeline slice, adjusting the magnitude of current and arcing time, repeating the test, and measuring the ablation amount of the pipeline slice after each group of test; then, after completing the arc ablation simulation test, carrying out an ablation characteristic analysis process, and making parameters for measuring ablation degree comprise ablation depth, ablation area, ablation weight loss, ablation volume and temperature; and making parameters for measuring ablation energy comprise current magnitude and arcing time, during analysis, considering power function weights of two variables, namely the current magnitude and the arcing time, adding a constant as correction, controlling a time current factor by changing a controllable coefficient, and performing fitting and regression analysis on a change trend of ablation variable data. According to the method, the problem that the current amplitude deviation in an actual test is not beneficial to quantitative analysis is solved.

Description

technical field [0001] The invention relates to the technical field of electric power engineering, in particular to a slice test device for buried metal energy transmission pipelines. Background technique [0002] Oil and gas pipelines and power grids are the lifeblood of energy security. The rapid economic development in recent years has increased my country's demand for energy. However, my country's special geographical environment has created a geographically reversed energy layout and power consumption dominated by fossil energy. This makes large-scale, long-distance energy transmission inevitable. As of now, my country has 160,000 kilometers of oil and gas pipelines in operation. In order to give full play to the advantages of limited land resources, power lines and oil and gas pipelines are inevitably There will be crossing of paths, and in some land-constrained areas, there are even long-distance shared public corridors. A large number of power channels and oil and gas ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for evaluating the degree of ablation of buried metal energy transmission pipelines under power frequency current, and to solve the quantitative analysis problem of evaluating the degree of ablation

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