Method and system for calculating leakage amount based on DMA zoning flow

A flow calculation and leakage technology, which is applied in the direction of calculation, complex mathematical operation, design optimization/simulation, etc. It can solve the problem of unscientific and unscientific determination of the minimum flow time period at night, so as to avoid differences in leakage data, Avoid biased results and enhance accuracy

Active Publication Date: 2019-02-26
TAIHUA WISDOM IND GRP CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The leakage calculation method provided by the prior art has the following defects: First, the determination of the minimum flow time period at night is not scientific enough. Generally, the time period adopted is 2:00-4:00, which can be seen from the regional level. However, for the western region, take Lhasa, Urumqi and other cities as examples. They are located in the sixth district of the east, and there is a two-hour time difference with Beijing (the eighth district of the ea

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  • Method and system for calculating leakage amount based on DMA zoning flow

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Embodiment 1

[0031] In order to calculate the leakage more accurately, please refer to figure 1 , figure 1 It is a flowchart of a method for calculating leakage based on DMA partition traffic provided by the present invention. Such as figure 1 As shown, the present invention provides a method for calculating leakage based on DMA partition traffic, including:

[0032] S1: Install a flow meter at the inflow point of the DMA partition, and set the flow meter data upload interval;

[0033] S2: Upload the sampling data of the flowmeter to the SCADA system in real time, and then the water supply management system calls the sampling data in the SCADA system, and stores the sampling data in the database of the water supply management system;

[0034] S3: Obtain all sampling data within one month, and calculate the first flow data of this time period based on 30 minutes;

[0035] S4: According to the first flow data, calculate the first average value u1 and the first standard deviation σ1 of al...

Embodiment 2

[0047] See figure 2 , figure 2 It is a flow chart of another method for calculating leakage based on DMA partition traffic provided by the present invention. Such as figure 2 As shown, the present invention provides a method for calculating leakage based on DMA partition traffic, including:

[0048] S1: Install a flow meter at the inflow point of the DMA partition, set the flow meter data upload interval, and the interval is less than 10 minutes;

[0049] S2: Upload the sampling data of the flowmeter to the SCADA system in real time, and then the water supply management system calls the sampling data in the SCADA system, and stores the sampling data in the database of the water supply management system;

[0050] S3: Obtain all sampling data within one month, and calculate the first flow data of this time period based on 30 minutes;

[0051] S4: According to the first flow data, calculate the first average value u1 and the first standard deviation σ1 of all the first flo...

Embodiment 3

[0068] See image 3 , image 3 It is a structural diagram of a system for calculating leakage based on DMA partition traffic provided by an embodiment of the present invention. Such as image 3 As shown, the present embodiment provides a system for calculating leakage based on DMA partition flow, including: DMA system 1, SCADA system 2 and water supply management system 3, DMA system 1, water supply management system 3 and SCADA system 2 respectively connect.

[0069] DMA system 1 divides the area to be measured into multiple DMA partitions; the inflow point of the DMA partition is connected to the flowmeter, and the flowmeter uploads the sampling data to the SCADA system in real time according to the preset interval time, and the preset interval time is less than 10 minutes.

[0070] The water supply management system 3 includes a database 30, a first calculation module 31, a second calculation module 32, a data elimination module 33, a determination module 34, a third cal...

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Abstract

The invention discloses a method and a system for calculating the leakage amount based on DMA zoning flow. The method comprises the following steps: a flow meter is installed at an inflow point of theDMA partition; the upload interval time of the flow meter data is set. The sampling data of the flowmeter is uploaded to the SCADA system in real time, and then the sampling data of the SCADA systemis called by the water supply management system, and the sampling data is stored in the database of the water supply management system. According to the sampling data, the first flow data and the second flow data are obtained, the minimum night flow time period is determined, and whether the second flow data conforms to the normal distribution is judged, so as to determine the leakage amount of the DMA partition. By calculating the leakage amount after judging the normality of the second flow rate data, the accuracy of the calculation result of the leakage amount can be improved and the calculation efficiency can be improved.

Description

technical field [0001] The present invention relates to the technical field of leakage calculation of a water supply pipe network, and more particularly, to a method and system for calculating leakage based on DMA partition flow. Background technique [0002] With the rapid development of urbanization, the importance of water supply system as a part of municipal public utilities has been further highlighted, and the problem of water supply leakage is also plaguing water supply companies and water affairs authorities. According to the "2016 Urban and Rural Statistical Yearbook", my country's urban public water supply leakage amounted to 7.8 billion cubic meters in 2016, and a large amount of water resources were lost in vain. Because there are various forms of leakage and many causes, such as damage to the main body of the pipeline, damage to the connection of the pipeline, leakage of pipeline accessories (gates, valves, fire hydrants, etc.), it is extremely complicated to ca...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06F17/18
CPCG06F17/18G06F30/20
Inventor 郝敬全刘加波路可可刘瑞明孔令坤公飞马述杰
Owner TAIHUA WISDOM IND GRP CO LTD
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