Real-time clustering early warning method for oil and gas pipeline monitoring based on massive vibration interference events

A vibration interference and event technology, applied in the direction of measuring devices, pipeline systems, computer components, etc., can solve the problems of large number of vibration interference events, high false alarm rate of early warning, difficulty in meeting actual production needs, etc., and achieve reasonable threshold setting, The effect of reducing the number of alarms

Active Publication Date: 2020-08-25
ANHUI CASZT PHOTOELECTRIC MEASUREMENT & CONTROL TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

If the amplitude and phase thresholds are set low, the number of identified vibration disturbance events will be large, and many weak surface normal activities will also be identified as abnormal disturbance events, thereby reducing the early warning accuracy of the monitoring system; on the contrary, if the amplitude If the threshold and phase threshold are set high, it is easy to miss the early warning because the threshold setting for triggering the early warning is too high.
Therefore, this threshold early warning mechanism based on the characteristics of pulse data often has disadvantages such as poor early warning accuracy and high early warning false alarm rate, which is difficult to meet actual production needs.

Method used

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  • Real-time clustering early warning method for oil and gas pipeline monitoring based on massive vibration interference events
  • Real-time clustering early warning method for oil and gas pipeline monitoring based on massive vibration interference events
  • Real-time clustering early warning method for oil and gas pipeline monitoring based on massive vibration interference events

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Embodiment 1

[0029] The invention provides a real-time clustering early warning method for oil and gas pipeline monitoring based on massive vibration interference events, including a coherent light time-domain reflection vibration sensor system based on Rayleigh scattering, characterized in that: the coherent light based on Rayleigh scattering The time-domain reflection vibration sensing system includes lasers, amplifiers, acousto-optic modulators, couplers, digital signal processors, drivers, isolators, delay fibers, piezoelectric ceramic drivers, photodetectors, central processing units, and circulators. The number of amplifiers mentioned above is 2, the number of couplers is 5, respectively C1, C2, C3, C4, C5, the number of acousto-optic modulators is 2, lasers, digital signal processors, drivers, isolators, delays The number of optical fiber, piezoelectric ceramic driver, photodetector, central processing unit and circulator is all set to one, and the laser is divided into two sets with...

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Abstract

The invention provides a real-time clustering early warning method for oil and gas pipeline monitoring based on massive vibration interference events. In the method, a Rayleigh scattering-based coherent light time domain reflection vibration sensing system is included, and the method is characterized in that the Rayleigh scattering-based coherent light time domain reflection vibration sensing system comprises a laser, amplifiers, acousto-optic regulators, couplers, a digital signal processor, a driver, an isolator, a delay fiber, a piezoelectric ceramic driver, a photodetector, a central processing unit and a circulator. The A real-time clustering analysis method is adopted to perform cluster analysis on the vibration interference event data obtained through analysis in the time and spacedistribution dimensions at the same time, that is, the spatial distribution characteristics of abnormal interference events are considered, so as to better match the data characteristics caused by theinterference event behavior, which can significantly reduce the number of false positives, reduce the possibility of false negatives, and improve the accuracy and effectiveness of early warning.

Description

technical field [0001] The invention relates to the technical field of oil and gas pipeline detection, in particular to a real-time clustering and early warning method for oil and gas pipeline monitoring based on massive vibration interference events. Background technique [0002] Existing real-time early warning and monitoring systems for oil and gas pipelines generally classify and identify vibration source interference events based on the amplitude and phase characteristics of optical fiber time domain signals. If the amplitude and phase thresholds are set low, the number of identified vibration disturbance events will be large, and many weak surface normal activities will also be identified as abnormal disturbance events, thereby reducing the early warning accuracy of the monitoring system; on the contrary, if the amplitude If the threshold and phase threshold are set high, it is easy to miss the early warning because the threshold for triggering the early warning is set...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D5/06G01H9/00G06K9/62
CPCF17D5/06G01H9/006G06F18/23
Inventor 罗张良李博沈友利武玉松牛瑶刘仕豪张秀玲张计强
Owner ANHUI CASZT PHOTOELECTRIC MEASUREMENT & CONTROL TECH CO LTD
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