A method and system for intelligent monitoring of natural gas pipeline leakage

Abstract

The invention provides an intelligent monitoring method for natural gas pipeline leakage, which includes the following steps: using an acoustic array to collect audio signals during the operation of natural gas pipelines; using a beamforming algorithm based on symbolic coherence and feature space decomposition to perform imaging and positioning on the audio signals; The linear constraint minimum variance algorithm obtains the audio spectrum in the direction of the angle of arrival; the beamformed spectrum is used as a feature for standardization processing, and input into the pre-trained natural gas leakage diagnosis model to obtain the pipeline status. The intelligent monitoring method for natural gas pipeline leakage proposed by the present invention uses a beamforming algorithm based on sign coherence and feature space decomposition to better suppress side lobes and improve the resolution of acoustic imaging, and can perform high-contrast leakage sources on site images And high-resolution acoustic imaging and accurate positioning can effectively improve the accuracy of natural gas leak diagnosis, while greatly reducing the workload and difficulty of investigation of the on-duty personnel.

Description

technical field [0001] The invention belongs to the technical field of natural gas leakage monitoring, and more particularly relates to an intelligent monitoring method and system for natural gas pipeline leakage. Background technique [0002] The global natural gas transportation and distribution network is complex and still expanding. Research has shown that pipelines are the safest as a means of transporting gas, but that doesn't mean using pipelines to transport gas is without risk. Therefore, ensuring the reliability of natural gas pipeline infrastructure has become a key requirement, and the generation of leaks is a major factor that threatens the reliability of pipeline networks. Pipe leaks are a significant problem regardless of the size of the leak due to the potentially dramatic effects. These impacts go beyond the costs involved in downtime and repair bills, and can include significant loss of resources, as well as possible personal injury and environmental disa...

AI Technical Summary

Problems solved by technology

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides an intelligent monitoring method and system for natural gas pipeline leakage, the purpose of which is to solve at least one of the existing problems of complex construction, poor stability, low accuracy and high cost. one

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