Oil and gas pipeline alternating current interference prevention dynamic protection method and system and storage medium

Abstract

The invention discloses an alternating current interference prevention dynamic protection method and system for an oil and gas pipeline and a storage medium, and relates to the field of interference protection of pipelines. The method comprises the following specific steps: collecting an interference signal generated by an interference source on an interfered target in real time; converting the interference signal from an analog quantity to a digital quantity, obtaining an amplitude and a phase of an AC frequency component in the interference signal, and generating an interference compensation signal with an opposite phase according to the amplitude and the phase of the AC frequency component in the interference signal; and jointly acting the interference signal and the interference compensation signal on the interfered target to counteract the interference signal. According to the method, external interference signals are counteracted in a certain area through waveform superposition, advanced intervention on alternating-current interference is achieved, and corrosion of the alternating-current interference on a pipeline, influences of the alternating-current interference on protection equipment and influences of the alternating-current interference on personal safety are reduced.

Description

technical field [0001] The invention relates to the field of pipeline interference protection, and more specifically relates to a dynamic protection method, system and storage medium for oil and gas pipelines against AC interference. Background technique [0002] With the continuous expansion of domestic pipeline construction scale and the rapid development of basic electrical projects such as electrified railways and high-voltage transmission lines, the external environment of pipelines has become increasingly complex. At present, the AC interference sources of domestic long-distance oil and gas pipelines mainly come from electrified railways and high-voltage transmission lines. Electrified railways mainly generate AC interference to parallel or intersecting pipelines in the vicinity through resistive coupling and inductive coupling. [0003] Although domestic long-distance oil and gas pipelines all adopt an anti-corrosion system that combines external anti-corrosion layer...

AI Technical Summary

Problems solved by technology

At present, the most widely used is the drainage method based on the transmission route protection, but there are the following problems: 1. The drainage method will affect the effect of cathodic protection to a certain extent, so the drainage flow should be limited in specific occasions

2. It will interfere with the rail potential distribution and current distribution of the railway itself, causing interference and other adverse effects on the railway

3. It will cause intensified corrosion of the metal structure in the drainage area

4. The maintenance workload is heavy, and the effect is not obvious

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