Method and device for rapidly and accurately positioning leakage point of long oil delivery pipeline

Abstract

The invention provides a method and device for rapidly and accurately positioning a leakage point of a long oil delivery pipeline and particularly relates to a nonlinear system random Hinfinite filtering method and device under the condition of random data loss and quantization caused by the network environment. The influence of the random information loss and quantization on the filtering performance is taken into consideration, a leakage point positioning method is converted into a random Hinfinite filtering method, and positioning of the leakage point is achieved through a complete square method and by solving a specific coupling Riccati differential equation according to the inherent nonlinear characteristic of a measurement model, linearization errors and non-Gaussian measurement errors. Compared with an existing pipeline leakage positioning method, the random generation data loss and quantization are taken into consideration in the pipeline leakage positioning technique, the pipeline leakage point positioning technique with the purpose of solving Hinfinite filter parameters is obtained, and the speed and accuracy of positioning of the leakage point of the long oil delivery pipeline are further improved.

Description

technical field [0001] The invention belongs to the technical field of pipeline detection, and relates to a method and a device for quickly and accurately locating a leak point of a long oil pipeline. The method and device are suitable for accurately locating whether there is a leak point in an oil pipeline. Background technique [0002] With the development and progress of modern civilization, all kinds of pipelines are becoming more and more important in human life. From water and gas in daily life to oil in industrial blood, all are transported through pipelines. Subsequently, with pipeline aging, theft and emergencies, pipeline leakage has always plagued relevant personnel and departments. Therefore, how to find pipeline leakage in the first place and minimize losses has always been the direction of efforts of all parties. . At present, manual inspection is usually used in pipeline leakage detection. This method always lags behind in manpower investment and leak detecti...

AI Technical Summary

Problems solved by technology

[0005] Among the current mature technologies, only the acoustic wave monitoring method is more effective for pipeline leakage monitoring. However, in order to improve the real-time leakage monitoring and the accuracy of leak point location, it is necessary to increase the density of sensors on the pipeline, and increase the corresponding power supply, Communication equipment, resulting in high system costs and high installation and maintenance costs

The existing technology generally has the problems of high system false alarm rate and poor anti-interference ability due to the influence of interference events around the pipeline when monitoring leakage

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