Water supply networks face pipe failures that range from small service connection leaks to catastrophic transmission main bursts. The majority of these failures occur due to frequent, fast and significant variations in pressure known as pressure transients or water hammer events. Such variations stress the pipes and joints, and act to reduce the effective age of the distribution network assets. Thus, failures occur not only because of ageing of the network but also due to abnormal pressure transients.

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Visenti provides a full suite of analytics offering to manage the entire water supply network via efficient management strategies using flow and pressure, improving on pipe rehabilitation and water balance programs, better detection of water quality issues in the networks and improving the responsiveness to bursts/leaks through pressure transients monitoring.

This analytics package can be installed on a premise at client’s location to cater for unlimited number of sensor points for pressure, flow and water quality analytics under a lifetime license with unlimited users and unlimited data management and analytics.

Active Leakage Management through High Rate Pressure Transients Analysis

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For analytics based on high rate Pressure Transients, Visenti provides state-of-the-art Transient Pressure Transmitter (TPT) equipment and software products PascalViewTM and LeakIntelTM for leakage prediction and 24/7 detection, respectively.

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Visenti’s TPTs provide pressure data sampling from 64Hz to 256Hz, are equipped with GPS for accurate time-stamping of data, communicate with the server every minute for data transmission and are capable of storing up to 30 days of data.

Visenti’s system is comprised of high-rate (256 samples/sec) pressure sensors installed at optimal locations to monitor the entire network from the distillate transmission lines to RPS and to distribution network upto customers. Through this, Visenti’s analytics deliver 24/7 effective pipe failure predictions and real-time identification of damaging water-hammer events. It is also capable of combining acoustic signals to detect evolving background leaks that do not produce detectable pressure hammers.

PascalViewTM identifies stress-points in the network (pipes likely to break in the near future) through detecting and automatically localizing damaging pressure transient in the network. It is able to distinguish pressure transients produced by customer consumptions, valve operations, pumping operations etc. and identify usual transients from the damaging ones. This system is equally effective on all pipe diameters and materials and is also unaffected by the ambient noise.

LeakIntelTM detects bursts in the network 24/7 and sends alarm at most within an hour of the incident. The alarm contains the estimate of the size of the burst and the estimated location on the pipe network. When pressure is sampled at 256Hz and GIS data is of good accuracy, LeakIntelTM can localize a burst within few meters (less than 50m) of its actual location. This system is also equally effective on all pipe diameters and materials and is also unaffected by the ambient noise.

Data Management, Analytics and Network Simulations

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DataIntelTM is a comprehensive package for flow-based, and water quality analytics. This product helps with setting up and tracking DMA level metrics, such as variations in the minimum night flow and demand. Alert notifications can be set on various anomalies. These alerts are delivered through a secure web-based user interface, Email and SMS.

DataIntelTM is able to integrate with existing data sources such as SCADA systems, databases, Microsoft Excel files and text files. The data is cleaned to find abnormalities in the data (e.g. corrupt data, missing data) and estimated data is made available. It provides map-based visualization through integrating with ESRI’s ArcGIS system, Google Maps and third party OpenStreetMap.

Users are able to setup many kinds of real-time analytics and anomaly detection alerts on the data sources such as DMA demand calculations and forecasts to help with pumping operations, minimum night flow and volume tracking to help with DMA level leakage detection, change in demand detection and correlating with weather.

Where Automated Meters (AMR) are available at customer premises; DataIntelTM provides a comprehensive package for Automated Metering Analytics for analytics such as customer-side leakage detection, demand analysis and integration with billing.

DataIntelTM provides various tools for conducting leakage calculations. These include methodologies for carrying out both top-down and bottom-up water balancing. For top-down approach, DataIntelTM facilitates with implementing International Water Association’s Infrastructure Leakage Index (ILI) and Unaccounted For Water (UFW).

DataIntelTM provides a general-purpose module for managing ALC activities. The features provided by this module include generating work orders, tracking resources and estimating their workloads, calendar views for tracking the scheduled ALC activities and representing the utility network in various forms such as a hierarchical design or a network of connected DMAs.

Accurate analytics starts with accurate data. VEE is a feature of DataIntelTM that cleans data as it comes in so that futile data is not used in the analytics and VEE module ensures that data captured from sensors is validated and missing data estimated before analytics are carried out. This VEE system learns the normal/good data from each sensor to automatically correct invalid or fill in missing readings. Users are provided with the option to auto-correct bad data or leave it empty.

OHMViewTM uses calibrated hydraulic models and allows users to perform various types of simulations with ease. Various hydraulic simulations supported by OHMViewTM include pipe isolation, valve operation, fire flow, addition/removal of customers, addition/removal of demands and flushing. In each case, the simulator provides impact reports that include customers likely to be affected due to the operation, areas with low pressure, pipes with reverse flow, pipes with no flow and pipes with high velocity as this can affect water quality. The simulations can be triggered while in the field through mobile devices and results viewed within few seconds. The simulations can be saved and/or downloaded for future referencing.

Emox Engineering

Emox Engineering