1. Industry Overview

Water is an important resource for human life, industrial and agricultural production, and social and economic development. With the rapid increase of the world’s population, water shortages have increasingly become a problem restricting human development. China is a severely water-scarce country. According to statistics from relevant departments, the leakage rate of the water supply network in most cities in my country is more than 15%, and the total annual leakage exceeds 4 billion cubic meters. Therefore, while ensuring the safety of water supply, effectively reducing the leakage of the urban water supply system has become the core content of smart water affairs. Therefore, it is necessary to build a leakage control DMA zone metering system.

DMA (District Metering Area, that is, independent metering area) refers to the method of cutting off the pipe section or closing the valve on the pipe section to divide the pipe network into several relatively independent areas, and install the flow rate on the inlet and outlet pipes of each area In order to realize the monitoring of the inflow and outflow of each area.

Leakage control is the main purpose of DMA management. In the past, water supply companies used to passively detect leaks, and only locate and repair the problem after finding the problem. This led to a long leakage time and increased total water loss, even if the leak detection company was asked to perform leakage. The general survey can achieve good results in a short time, but due to the existence of water leakage recovery phenomenon, the purpose of reducing leakage cannot be achieved fundamentally. Only through accurate nighttime measurement, real-time monitoring, accurate and rapid leakage location and maintenance, and reasonable pressure management can we finally achieve the goal of controlling leakage and gradually reducing the gap between production and sales.

Second, the problems faced

At present, the online DMA partition measurement information system is the most mainstream choice for controlling leakage in the pipeline network. As a comprehensive management platform, DMA has the functions of real-time data display, partition flow information display, leakage information, and production and sales difference information. By comparing the statistics of partition flow data and leakage information, enterprises can actively discover and deal with leakage. Damage problem. However, it should be noted that the DMA partitioned metering system is also changing with the development of the city. For water companies, the applied DMA partitioned metering system still has reasons for the rationality of partition planning, complete data of the underlying equipment, and inconsistent meter reading cycles. The data is not sound in reality.

3. Introduction to system functions

Leakage Kanban

This interface visually displays the leakage data of each partition.

Leakage configuration management

Partition management

This interface is used to display partition information functions, adding, modifying, importing, and deleting partition basic data.

Table management

This interface is used to display the relationship data between the zone and the device flowmeter, including the functions of querying the device flowmeter in the zone, binding, editing, and unbinding the basic data.

Account Management

This interface is used to display partition and household table relational data, including the functions of querying user water meter information in the partition, binding, importing, and unbinding basic data

Manage partition traffic

The management of the partition flow is based on the statistics of the partition's instantaneous flow data based on the relationship between the partition and the device flowmeter within its range, displaying the basic information of the partition and the current flow data information, and supporting report display and trend curve query.

Instantaneous flow data statistics of each management zone-data list, such as zone name, number of management tables, current flow accumulation, collection time. Statistics of instantaneous traffic data of each management zone-trend, comparison of traffic trend of each management zone under the same parent zone, single selection, multiple selection, and time period can be set

Minimum flow analysis

Minimum traffic display

The minimum flow at night is an important indicator to evaluate the actual leakage level of the independent metering area. The minimum flow at night refers to the minimum value of the instantaneous flow during the night time period (default 2 o'clock to 5 o'clock, can be modified). The minimum flow at night is prompted by observation and system alarms. Data, and actively discover leaky partitions. Statistics of night minimum traffic data of each management zone-data list, such as zone name, number of users, minimum traffic of the previous day, minimum time, user average. Display the traffic trend comparison of each management zone under the same parent zone, which can be single or multiple choices; the default night time of the previous day-instantaneous traffic

Minimum flow limit setting

Flow limit settings are: red warning value. For all management zones, manually set limits and sudden increase limits based on management experience.

The statistical period of each management partition is not necessarily the same, the default is from 2 am to 5 am, which can be modified one by one or in batches

Leakage analysis

Analyze the leakage level of each district based on the leakage amount calculated based on the monitoring data and the difference between the water supply volume and the water sold volume of the district and the part of the unmeasured water amount.

Daily leakage rate statistics

The daily leakage rate is calculated based on the difference between the water supply and the water sold in the district and a part of the unmeasured water amount. The leakage rate/amount of the first-level district, the leakage rate/amount of the second-level district included, and the three included The leakage rate/quantity of the level partition and the proportion of the leakage amount are displayed in the form of a data list, and the leakage distribution-which stage is more serious through data analysis;

Daily leakage rate comparison

By observing the influence of working days and weekends on water usage rules (not considering holidays for the time being), and collecting data on the leakage rate/volume of the same period in history, the same period of last week, and the selected date, we can obtain the water usage rule and compare the water consumption data.

Statistics of difference between production and sales

Monthly production and sales difference statistics

The difference between production and sales is calculated based on the difference between the water supply volume and the water sales volume of the district. This interface displays the monthly production and sales volume, leakage rate statistics and ranking-leakage rate percentage (first, second, third, fourth). Based on the report, the data is summarized. Including water supply, water sales, poor production and sales, leakage rate, etc. The statistics of the current month are displayed by default; the production and sales difference data of any historical month can be queried

Statistics of annual production and sales difference

According to the annual production and sales gap data, the annual production and sales gap data is calculated. Integrated time period query and export report functions.

Data correction

The original and revised values ​​of the water sales volume (synchronized by the revenue system) of each management zone are retained and displayed on a monthly basis. The value of the difference between production and sales can be corrected according to the actual situation.

Alarm display

Alarm information

When the system reports an abnormality according to the set minimum flow limit, the interface defaults to display all the alarm information of the last day, and the type of alarm information and confirmation status can be filtered

Four, project summary

Through the DMA partition measurement information system, the water company solves the statistical and analysis problems of the regional production and sales difference and the leakage rate in the actual leakage control process, and will effectively solve the problem of actively controlling the leakage of the pipeline network. The DMA partition measurement information system solution product can not only reflect the most intuitive data of the partition leakage, but also provide data support for the leakage control and management process based on basic data such as flow rate and production and sales difference.

1. Through the partition planning of the pipe network, the overall division of the pipe network is realized, and basic data such as equipment flowmeters are provided. The calculated partition flow data and production and sales difference data provide data support for the investigation of the leakage area, and the search for leakage is more accurate.

2. Real-time grasp of the system operation status, as a subsystem or module of the smart water platform, focusing on production and sales difference statistics, leakage analysis, and table affairs analysis. By reducing leakage, it can directly reduce enterprise costs and meet customers' daily report management and project management data Visualization requirements;

The DMA partition metering information system solution product integrates data resources from the collection of equipment data to the calculation of partition data. At the same time, data analysis is performed based on the above data resources, and then the leakage is quickly found, thereby achieving leakage control.