Pipe explosion pre-warning method based on metering zone flow monitoring data

A technology for metering and zoning and flow monitoring, applied in electrical digital data processing, special data processing applications, computing, etc., can solve problems such as unfavorable large-scale promotion, high equipment costs and renovation costs, and improve scientificity and operability. , Guaranteed safety and reliability, cost-saving effect

Active Publication Date: 2016-09-07
TSINGHUA UNIV
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Problems solved by technology

However, the equipment cost and modification cost are high, which is not conducive to the large-scale promotion of this method.

Method used

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  • Pipe explosion pre-warning method based on metering zone flow monitoring data
  • Pipe explosion pre-warning method based on metering zone flow monitoring data
  • Pipe explosion pre-warning method based on metering zone flow monitoring data

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Experimental program
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Embodiment Construction

[0044] The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0045] When monitoring the operation of the urban water supply network, it is necessary to compare the new flow data with the normal historical flow data, so as to identify whether there is a pipe burst accident in the metering zone. Cluster analysis can be used to compare the similarity between the vectors composed of flow data. Pipe burst will cause large flow fluctuations in the metering area. Therefore, the vector with lower similarity is more likely to represent a pipe burst accident.

[0046] Based on the above principles, the present invention utilizes Matlab as the development platform of the pipe burst early warning method, fully utilizes its powerful computing power and rich built-in functions, and can realize the flow data of the metering partitions by writing corresponding codes in the M file editor. Integration and clustering to improve development efficiency ...

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Abstract

The invention belongs to the technical field of emergency processing of environmental engineering, and particularly relates to a pipe explosion pre-warning method based on metering zone flow monitoring data. The method comprises the steps of collecting flow data for forming a historical data matrix and performing a pipe explosion simulation experiment to obtain pipe explosion data for forming a test matrix; presetting an initialization parameter k1 and an abnormal value detection parameter k2, performing clustering analysis on the historical data matrix, removing abnormal vectors, generating an initialization matrix, forming a detection matrix by the initialization matrix and test vectors, performing clustering analysis on the detection matrix, removing abnormal test vectors, performing difference operation for the vectors and mean vectors of the detection matrix, and if each difference value is greater than zero or less than zero, not giving a pipe explosion pre-warning, otherwise, giving the pipe explosion pre-warning; and computing a missing alarm rate and a false alarm rate, adjusting the preset initialization parameter and the preset abnormal value detection parameter until optimal missing alarm rate and false alarm rate are obtained, and applying the optimal missing alarm rate and false alarm rate to real-time pipe explosion pre-warning. The pre-warning can be accurately given during pipe explosion or leakage, the hardware cost is low, and the pre-warning effect is ideal.

Description

technical field [0001] The invention belongs to the technical field of emergency treatment of environmental engineering, and in particular relates to a pipe burst early warning method based on metering zone flow monitoring data. Background technique [0002] Urban water supply network is the lifeline of modern cities and occupies an irreplaceable position in people's daily life and urban development. Pipe burst is a common type of accident in the water supply network, and factors including weather conditions, various loads, various corrosions, water hammer, pipeline quality and construction, etc., can cause pipe bursts, and at least cause a large amount of water The waste of resources will lead to accidents such as traffic interruption and ground subsidence, and will endanger the property and life safety of the people. [0003] The suddenness, uncertainty and complexity of the pipe burst accidents have brought great difficulties to the emergency response work of the water s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 刘书明吴以朋吴雪
Owner TSINGHUA UNIV
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