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An abnormal detection method for water supply pipe network

A water supply pipe network, abnormal technology, applied in pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc., can solve the problems of high false alarm rate and high false alarm rate of water supply pipe network

Active Publication Date: 2018-03-30
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The noise in the water supply pipe network mainly includes the noise of the pipe network itself and the noise generated when abnormal events occur. Due to the existence of these two kinds of noise, the anomaly detection of the water supply pipe network has a high rate of false alarms and a high rate of false alarms.

Method used

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  • An abnormal detection method for water supply pipe network
  • An abnormal detection method for water supply pipe network
  • An abnormal detection method for water supply pipe network

Examples

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Embodiment Construction

[0062] In this example, a certain DMA area is considered, and there are 14 pressure monitoring points, the geographical location of which is as follows figure 1 , the pressure data time is from March 20 to April 3 in X year, and the data from March 20 to April 2 is used as the basic data to detect April 3. Here, only the pressure value is used for illustration, but the method of the present invention is also applicable to the flow value.

[0063] (1) Wavelet noise reduction to obtain steady-state signals and noise signals

[0064] Now the wavelet denoising process is performed on the measured pressure signals collected by the SCADA system of the 14 monitoring points in the DMA area on April 3 to obtain the denoised pressure signals, and the denoised pressure signals of the monitoring points are interpolated with the original signals Calculate the corresponding noise sequence. Table 1 shows the effective value of the noise sequence of 14 measuring points on April 3.

[0065...

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Abstract

The invention discloses a method for detecting abnormality of a water supply pipe network. The invention calculates the signal-to-noise ratio of the mutation signal of the measuring point, and screens the measuring point of the reliable signal, thereby improving the reliability of abnormal detection data. In addition, residents' domestic water habits are regular. On this basis, the present invention uses statistical process control (SPC) and fuzzy synthesis methods to detect abnormal events, which can effectively enhance anti-interference ability and reduce false alarm rate and missed alarm rate. .

Description

technical field [0001] The invention belongs to the field of urban water supply, in particular to a method for detecting abnormality of a water supply pipe network. Background technique [0002] The urban water supply pipe network system is complex. The pipes have been buried underground for many years, aging and obsolete. Pipe leakage and pipe burst accidents occur frequently. Once a leak or pipe burst occurs, if it cannot be detected and located in real time, and the accident pipeline cannot be repaired in time, it will cause a lot of waste of water resources and water pollution, and seriously affect the water use in water-demanding areas, bringing great economic losses. Therefore, the real-time detection and location of abnormal events in the water supply network is the most urgent issue for safe water supply. [0003] In the water supply network, anomaly detection is not only affected by factors such as the scale of the burst pipe, the distance from the measuring point,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D5/06
CPCF17D5/06
Inventor 徐哲李宏伟熊晓锋何必仕陈晖
Owner HANGZHOU DIANZI UNIV