scholarly journals Integrated pressure control strategies for sustainable management of water distribution networks

2019 ◽  
Vol 85 ◽  
pp. 06005 ◽  
Author(s):  
Luigi Berardi ◽  
Daniele Laucelli ◽  
Antonietta Simone ◽  
Gianluca C. Perrone ◽  
Orazio Giustolisi
Keyword(s):  
Water Distribution ◽  
Control Strategies ◽  
Integrated Approach ◽  
Pressure Control ◽  
Distribution Networks ◽  
Water Distribution Networks ◽  
Water Losses ◽  
Leakage Reduction ◽  
Innovative Methodology ◽  
Optimal Setting

Pressure control in urban Water Distribution Networks (WDNs) allows to reduce water losses, delays asset deterioration and makes effective replacement works. This contribution presents an integrated approach to control pressure for leakage reduction that combines a recent strategy for optimal design of district metered areas (DMAs) with optimal setting of pressure reduction valves. DMA design strategy encompasses the possibility of reconfiguring water flows by closing some gate valves at district boundaries, while the optimal setting of PRVs driven by local or remote real time controls improves leakage reduction and reliability of final solution. The integrated approach is implemented into the WDNetXL platform for advanced WDN analysis, planning and management and is demonstrated on a real urban WDN in Southern Italy. As such, this work proposes an innovative methodology while demonstrating its transfer to water utilities and practitioners to support decisions in real-world complex scenarios.

scholarly journals Leakage reduction in WDNs through optimal setting of PATs with a derivative-free optimizer

2020 ◽  
Vol 22 (4) ◽  
pp. 713-724 ◽  
Author(s):  
Luigi Cimorelli ◽  
Andrea D'Aniello ◽  
Luca Cozzolino ◽  
Domenico Pianese
Keyword(s):  
Water Distribution ◽  
Characteristic Curve ◽  
Distribution Networks ◽  
Pipe Failure ◽  
Water Losses ◽  
Excessive Pressure ◽  
Leakage Reduction ◽  
Derivative Free ◽  
Optimal Setting ◽  
Water Volumes

Abstract Excessive pressure in water distribution networks (WDNs) may lead to undesirable effects, such as increased pipe failure rate and leakages. Pressure management (PM) techniques are indeed attractive to address these issues, reducing energy and water losses. Among the most recent PM techniques, pumps working as turbines (PATs) can be employed to both control pressure and recover energy. However, finding the best location, setting, and number of PATs to maximize both leakage reduction and energy production within a WDN is particularly challenging due to the severe nonlinearity of the problem and the large number of decision variables. To address the setting problem, a promising derivative-free nonlinear programming method is herein presented. The proposed method, modified to account for bound-type constraints, is capable of finding the optimal setting of a chosen number of PATs, given their position, direction, and machine type (characteristic curve), accounting for both energy and saved water volumes costs. In addition, this method is also able to establish whether the installed PATs must be bypassed or not. The proposed method capabilities are tested on a hypothetical complex WDN taken from the literature.

scholarly journals A New Device for Pressure Control and Energy Recovery in Water Distribution Networks

Water ◽  
2017 ◽  
Vol 9 (5) ◽  
pp. 309 ◽  
Author(s):  
Marco Sinagra ◽  
Vincenzo Sammartano ◽  
Gabriele Morreale ◽  
Tullio Tucciarelli
Keyword(s):  
Energy Recovery ◽  
Water Distribution ◽  
Pressure Control ◽  
Distribution Networks ◽  
Water Distribution Networks ◽  
New Device

scholarly journals Adaptive water distribution networks with dynamically reconfigurable topology

2014 ◽  
Vol 16 (6) ◽  
pp. 1280-1301 ◽  
Author(s):  
Robert Wright ◽  
Ivan Stoianov ◽  
Panos Parpas ◽  
Kevin Henderson ◽  
John King
Keyword(s):  
High Speed ◽  
Water Distribution ◽  
Large Scale ◽  
Pressure Control ◽  
Distribution Networks ◽  
Water Distribution Networks ◽  
Incident Management ◽  
Major Drawback ◽  
Dynamically Reconfigurable ◽  
Minimum Night Flow

This paper presents a novel concept of adaptive water distribution networks with dynamically reconfigurable topology for optimal pressure control, leakage management and improved system resilience. The implementation of District Meter Areas (DMAs) has greatly assisted water utilities in reducing leakage. DMAs segregate water networks into small areas, the flow in and out of each area is monitored and thresholds are derived from the minimum night flow to trigger the leak localization. A major drawback of the DMA approach is the reduced redundancy in network connectivity which has a severe impact on network resilience, incident management and water quality deterioration. The presented approach for adaptively reconfigurable networks integrates the benefits of DMAs for managing leakage with the advantages of large-scale looped networks for increased redundancy in connectivity, reliability and resilience. Self-powered multi-function network controllers are designed and integrated with novel telemetry tools for high-speed time-synchronized monitoring of the dynamic hydraulic conditions. A computationally efficient and robust optimization method based on sequential convex programming is developed and applied for the dynamic topology reconfiguration and pressure control of water distribution networks. An investigation is carried out using an operational network to evaluate the implementation and benefits of the proposed method.

scholarly journals Water Loss Reduction in Water Distribution Networks. Case Study

2019 ◽  
Vol 9 (1) ◽  
pp. 73-80
Author(s):  
Anca Hoțupan ◽  
Roxana Mare ◽  
Adriana Hădărean
Keyword(s):  
Water Flow ◽  
Water Loss ◽  
Water Distribution ◽  
Potable Water ◽  
Distribution Network ◽  
Distribution Networks ◽  
Water Distribution Networks ◽  
Water Losses ◽  
Supply Pipe ◽  
Looped Network

Abstract Water losses on the potable water distribution networks represent an important issue; on the one hand, water loss does not bring money and on the other hand, they modify water flow and pressure distribution on the entire system and this can lead to a cut-off of the water supply. A stringent monitoring of the water distribution network reduces considerably the water losses. The appearance of a leakage inside the distribution network is inevitable in time. But very important is its location and repair time – that are recommended to be as short as possible. The present paper analyses the hydraulic parameters of the water flow inside a supply pipe of a looped network that provides potable water for an entire neighbourhood. The main goals are to optimize these parameters, to reduce water losses by rigorous monitoring and control of the service pressure on the supply pipe and to create a balance between pressure and water flow. The presented method is valid for any type of distribution network, but the obtained values refer strictly to the analysed potable water distribution looped network.

scholarly journals Appraising the Impact of Pressure Control on Leakage Flow in Water Distribution Networks

Water ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 2617
Author(s):  
Thapelo C. Mosetlhe ◽  
Yskandar Hamam ◽  
Shengzhi Du ◽  
Eric Monacelli
Keyword(s):  
Water Distribution ◽  
Pressure Control ◽  
Distribution Networks ◽  
Water Distribution Networks ◽  
Effective Control ◽  
Model Free ◽  
Critical Nodes ◽  
Control Scheme ◽  
The Impact ◽  
Nodal Pressure

Water losses in Water Distribution Networks (WDNs) are inevitable. This is due to joints interconnections, ageing infrastructure and excessive pressure at lower demand. Pressure control has been showing promising results as a means of minimising water loss. Furthermore, it has been shown that pressure information at critical nodes is often adequate to ensure effective control in the system. In this work, a greedy algorithm for the identification of critical nodes is presented. An emulator for the WDN solution is put forward and used to simulate the dynamics of the WDN. A model-free control scheme based on reinforcement learning is used to interact with the proposed emulator to determine optimal pressure reducing valve settings based on the pressure information from the critical node. Results show that flows through the pipes and nodal pressure heads can be reduced using this scheme. The reduction in flows and nodal pressure leads to reduced leakage flows from the system. Moreover, the control scheme used in this work relies on the current operation of the system, unlike traditional machine learning methods that require prior knowledge about the system.

scholarly journals Losses in water distribution networks – a bibliometric review: general aspects and optimization

2021 ◽  
Vol 10 (12) ◽  
pp. e407101220659
Author(s):  
Emerson Pessanha de Almeida ◽  
Fernando das Graças Braga da Silva ◽  
Victor Eduardo de Mello Valerio
Keyword(s):  
Bibliometric Analysis ◽  
Distribution Systems ◽  
Water Distribution ◽  
State Of The Art ◽  
Distribution Networks ◽  
Current Situation ◽  
The State ◽  
Water Distribution Networks ◽  
Water Losses ◽  
General Aspects

The research carried out in the water distribution networks is of great importance, given the social, environmental and economic impacts that have occurred due to the scarcity of water resources. Therefore, any scientific effort shown in research that studies water distribution systems is of great relevance. Techniques such as mathematical modeling, computer simulation and statistical methods are widely used in order to obtain more reliable answers, whether for the identification of the current situation of the network, as well as for the prediction of scenarios, failure events, increased demand, etc. The objective of this work is to carry out a bibliometric analysis to identify the state of the art of research that addresses the theme of water distribution networks for the control and reduction of the volume of water losses, which will serve as a guide for future works to to structure itself in the most relevant researches that study the theme. The developed methodology was able to analyze a metadata composed of 4188 documents taken from the Web of Science journals database. As a result, a geographical view of the theme was obtained, pointing out the main countries, affiliations, journals and researchers, as well as pointing out the main documents and relevance of the theme. It can be concluded after the results obtained that bibliometric analysis is an important tool for obtaining the state of the art. With it is possible to have a better understanding of the current situation in the development of research, familiarizing researchers with what is most current and relevant.

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