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Development Of An Autonomous And Intelligent System For Residential Water End Use Classification, Khoi Anh Nguyen, Rodney Stewart, Hong Zhang
Development Of An Autonomous And Intelligent System For Residential Water End Use Classification, Khoi Anh Nguyen, Rodney Stewart, Hong Zhang
International Conference on Hydroinformatics
Urban water supplies need to be ingeniously managed as a result of urbanisation and diminishing dam yield reliability. The advanced management of urban water consumption is deemed essential to maintain a sustainable water future. Understanding how, when and why water is used is vital for managing demand in cost-effective and equitable ways. Detailed knowledge on the quantities of water used in different circumstances gives critical knowledge for forecasting water and planning for water security (Stewart et al., 2010; 2011). Current intelligent water metering systems allow for the high resolution time series reading of water consumption (Beal et al. 2011). Such …
A Complex Adaptive Systems Approach To Simulate Interactions Among Water Resources, Decision-Makers, And Consumers And Assess Urban Water Sustainability, Alireza Mashhadi Ali, M. Ehsan Shafiee, Sankarasubramanian Arumugam, Emily Zechman Berglund
A Complex Adaptive Systems Approach To Simulate Interactions Among Water Resources, Decision-Makers, And Consumers And Assess Urban Water Sustainability, Alireza Mashhadi Ali, M. Ehsan Shafiee, Sankarasubramanian Arumugam, Emily Zechman Berglund
International Conference on Hydroinformatics
The balance between water supply and demand for urban water resources is threatened by population growth, land use changes, and climate change. Interactions among environmental resources, infrastructure, societal norms, and management decisions create complexity and increase the unpredictability of the dynamics of water availability. This research develops a sociotechnical framework to simulate interactions among technical and social systems and assess urban water sustainability. An agent-based model (ABM) is implemented to simulate a community of heterogeneous households as agents. The ABM is coupled with a hydrological watershed model, a water reservoir model, and climate change projections. The increase in the number …
Compromise Programming Based Scenario Analysis Of Urban Water Systems Management Options: Case Study Of Kerman City, Saeed Nazari, S. Jamshid Mousavi, Koroush Behzadian, Zoran Kapelan
Compromise Programming Based Scenario Analysis Of Urban Water Systems Management Options: Case Study Of Kerman City, Saeed Nazari, S. Jamshid Mousavi, Koroush Behzadian, Zoran Kapelan
International Conference on Hydroinformatics
Supplying adequate water for urban water systems (UWSs) suffering from lack of water resources has always been a major concern in urban water management. Integrated simulation models are useful tools for sustainable planning and management of UWSs. This paper presents an integrated, conceptual modeling approach for simulation and analysis of an UWS by which different envisaged scenarios of water demand and resources are assessed. Other than water flow, the simulation model quantifies flows of energy, GHG emissions and cost in UWS. The performance of the developed model is demonstrated through its application to the UWS of Kerman City located in …
A Web-Based Hydroinformatic Platform For Water Quality Modelling And Simulation In A River Basin, Jose Pinho, Jose Vieira
A Web-Based Hydroinformatic Platform For Water Quality Modelling And Simulation In A River Basin, Jose Pinho, Jose Vieira
International Conference on Hydroinformatics
In recent years a major effort has been done to make water quality modelling tools available for water resources management at a river basin scale. The European water framework directive clear states that these tools must be used in making the diagnostic of surface water bodies water quality status and to anticipate the impact of measures to be implemented in order to achieve a good ecological status by 2015 in European waters. In order to make modelling tools usable by all the actors enrolled in water resources management process at river basins, these tools must be simple, user-friendly and robust. …
Web-Based Engine For Discovery Of Observations Using Landscape Units, Haowen Xu, Abbas Ali Amir, Marian Muste
Web-Based Engine For Discovery Of Observations Using Landscape Units, Haowen Xu, Abbas Ali Amir, Marian Muste
International Conference on Hydroinformatics
Investigations of natural resources processes realted to the water cycle are best studied using a commensurate landscape unit for the spatial extent of the process. Consequently, the capability to efficiently delineate the watershed extent along with the main hydrological characteristics and behavior of the river network and its drainage area is essential. The watershed search engine discussed in the present paper is designed to identify various observations acquired in the upstream drainage area of the watershed from a point specified by the user. The point can be selected on or outside the stream network using a web mapping interface. The …
Optimizing Operating Rules Of Multiple Source Water Supply Systems In Terms Of System Reliability And Resulting Operating Costs: Survey Of Simulation-Optimization Modeling Approaches Based On General Purpose Tools, Jordi Meseguer, Gabriela Cembrano, Josep M. Mirats, Eduard Bonada
Optimizing Operating Rules Of Multiple Source Water Supply Systems In Terms Of System Reliability And Resulting Operating Costs: Survey Of Simulation-Optimization Modeling Approaches Based On General Purpose Tools, Jordi Meseguer, Gabriela Cembrano, Josep M. Mirats, Eduard Bonada
International Conference on Hydroinformatics
Management of a water supply system from the point of view of the conjunctive use of water sources is a very complex problem whose solution is not just obtained using analytical models but also through a negotiation process among stakeholders and in which Public Bodies have a main role. For these reasons, this problem has been addressed using conservative approaches based on simulation models or simulation – linear optimization models parameterized using few parameters. These approaches have certain strengths but also certain drawbacks or constraints. In general these conservative approaches are already covered by existing generalized modelling tools (i.e. Aquator, …
Decision Making System For Water Production And Treatment Process As Well As Blending Of Multiple Water Sources Gat Micro Grid, Dal-Sik Woo, Sung-Hoon Shin, Haksoo Lee, Seounghyun Kim
Decision Making System For Water Production And Treatment Process As Well As Blending Of Multiple Water Sources Gat Micro Grid, Dal-Sik Woo, Sung-Hoon Shin, Haksoo Lee, Seounghyun Kim
International Conference on Hydroinformatics
Usage of water is on rise worldwide as a result of population growth and urbanization. Accordingly, conflicts are created to secure the water source among nations. Water production and treatment expense also incurred too much. To solve this problem, decision making system for blending of multiple water source, water production and treatment process are needed in order to provide secured water resources, customized water quantity and quality. Multiple water sources are classified into surface water, underground water, treated waste water, rain water, seawater and Brackish Water. Each of them can be treated to meet demand of customized water quantity and …
A Dss For Reservoirs Operation Based On The Execution Of Formal Models, Antonio Linares, Jesus Regodon, Laura Panizo, Maria Del Mar Gallardo, Pedro Merino
A Dss For Reservoirs Operation Based On The Execution Of Formal Models, Antonio Linares, Jesus Regodon, Laura Panizo, Maria Del Mar Gallardo, Pedro Merino
International Conference on Hydroinformatics
Controlling the evolution of a reservoir in a flood episode can be critical, especially in Mediterranean basins where the concentration time is very short. In this situation, an automatic software tool can help the reservoir manager to make a quick decision. In this paper we present a DSS based on the execution of formal models by means of model checking. This technique exhaustively explores the different execution branches of a model of the system. The DSS addresses two flood control tasks. First, the DSS simulates the evolution of the reservoir (the water stored and released) when applying a predefined flood …
Stochastic Assessment Of Environmental Flows In Semiarid Environments, Cristina Aguilar, Marta Egüen, Jose María Perales, Miguel A. Losada, María José Polo
Stochastic Assessment Of Environmental Flows In Semiarid Environments, Cristina Aguilar, Marta Egüen, Jose María Perales, Miguel A. Losada, María José Polo
International Conference on Hydroinformatics
The regimen of environmental flows (EF) must be included as terms of environmental demand in the management of water resources. Even though there are numerous methods for the computation of EF, the criteria applied at different steps in the calculation process are quite subjective whereas the results are fixed values that must be meet by water planners. This study presents a friendly-user tool for the assessment of the probability of compliance of a certain EF scenario with the natural regimen in a semiarid area in southern Spain. 250 replications of a 25-yr period of different hydrological variables (rainfall, minimum and …
Dynamic Condition Approach To Study The Self-Purification Capacity Of Colombian Water Bodies Case: Cauca River And Salvajina Dam, Alberto Galvis, Isabel Cristina Hurtado, Carlos Martínez-Cano, Juan Gabriel Urrego
Dynamic Condition Approach To Study The Self-Purification Capacity Of Colombian Water Bodies Case: Cauca River And Salvajina Dam, Alberto Galvis, Isabel Cristina Hurtado, Carlos Martínez-Cano, Juan Gabriel Urrego
International Conference on Hydroinformatics
The impact on water resources caused by municipal wastewater discharge has become a critical and ever-growing environmental and public health problem. In order to be able to efficiently address this problem, it is important to adopt an integrated approach that includes a decrease in and control of contamination at its source. These principles have been successfully applied in the industrial sector and now these concepts are also being applied to integrated water resources management. In this context the conceptual model of the Three Steps Strategic Approach (3-SSA) was developed, consisting of: 1) minimization and prevention, 2) treatment for reuse and …
Urbanwater And Waterp: Decision Support Systems For Efficient And Integrated Water Resources Management, David Sancho, Alvaro Rodríguez, Rafael Sánchez-Diezma, Xavier Llort, Gabriel Anzaldi, Edgar Rubión, Aitor Corchero, Albert Rodríguez
Urbanwater And Waterp: Decision Support Systems For Efficient And Integrated Water Resources Management, David Sancho, Alvaro Rodríguez, Rafael Sánchez-Diezma, Xavier Llort, Gabriel Anzaldi, Edgar Rubión, Aitor Corchero, Albert Rodríguez
International Conference on Hydroinformatics
In this work we present UrbanWater and WatERP, two EU-FP7 projects with the common objective of designing and developing innovative ICT solutions to integrate real-time knowledge on water demand and supply across water distribution networks. On one hand, WatERP proposes to develop a web-based Open Management Platform (OMP) supported by real-time knowledge on water supply and demand, enabling the entire water distribution system to be viewed in an integrated and customized way. The OMP provides inferred information regarding water supplies, flows, water consumption patterns, water losses, distribution efficiency, and water supply and demand forecasts to the user. This information is …
Cawat – A Catchment Water Allocation Tool For Integrated Irrigation And Aquaculture Development In Small Watersheds, Xueliang Cai, Suan Pheng Kam, Bui Tan Yen, Aditya Sood, Hoanh Chu Thai
Cawat – A Catchment Water Allocation Tool For Integrated Irrigation And Aquaculture Development In Small Watersheds, Xueliang Cai, Suan Pheng Kam, Bui Tan Yen, Aditya Sood, Hoanh Chu Thai
International Conference on Hydroinformatics
Water resources development has seen little development in the vast rural areas of Sub-Sahara Africa (SSA) due to lack of investment, means of access and poor policy environment. In search of sustainable and efficient water resources development, participatory approach is widely accepted as a key strategy for water resources development and conservations in many SSA countries. To encourage bottom-up solutions for local water resources development, a Catchment Water Allocation Tool (CaWAT) was developed to aid rural water resources planning for agriculture in small watersheds. The tool is based on water balance accounting to examine water allocations among different users. It …
Extending Occoquan Reservoir Water Quality Model For Stakeholder Involvement, Saurav Kumar, Adil Godrej, Thomas Grizzard
Extending Occoquan Reservoir Water Quality Model For Stakeholder Involvement, Saurav Kumar, Adil Godrej, Thomas Grizzard
International Conference on Hydroinformatics
There has been a paradigm change in water resource management as control of major point sources has improved, and recognition has grown of the importance of diffused pollution. Newer approaches, exemplified by watershed-scale management, emphasize stakeholder involvement to achieve better decision making through negotiation and compromise; and ultimately, better acceptance of final management solutions. Stakeholder participatory involvement in using complex water quality models to understand management scenarios and their impacts is, however, limited. Advanced receiving waterbody and watershed WQ models are complicated and require significant technical expertise in their understanding and use, which is a deterrent to non-expert stakeholder involvement. …
Using Smart Grid Technologies To Protect Human Health In Water Distribution Systems, Graham Symmonds
Using Smart Grid Technologies To Protect Human Health In Water Distribution Systems, Graham Symmonds
International Conference on Hydroinformatics
Since the introduction of the Safe Drinking Water Act, there has been marked reduction in the number of water-borne disease outbreaks attributed to water treatment systems. Over the same period, however, the percentage of disease outbreaks attributable to defects in the distribution system has increased exponentially. Interestingly, as a result of the continuous aging infrastructure employed by our water utilities, the number of water-borne disease cases has increased in the last decade. The smart grid for water can be used to significantly improve both the utility's understanding of water quality in the distribution system, but can dramatically increase the response …
An Optimization And Decision Support Tool For Long-Term Strategies In The Transformation Of Urban Water Infrastructure, Theo G. Schmitt, Silja Worreschk, Inka Kaufmann Alves, Frank Herold, Clemens Thielen
An Optimization And Decision Support Tool For Long-Term Strategies In The Transformation Of Urban Water Infrastructure, Theo G. Schmitt, Silja Worreschk, Inka Kaufmann Alves, Frank Herold, Clemens Thielen
International Conference on Hydroinformatics
Predicted climatic, demographic and socio-economic developments cause major adaptions of urban water infrastructures. The central water supply and wastewater systems in Europe do not meet the increased requirements of resource efficiency and sustainability anymore. Especially in rural areas predicted demographic change and the particular differentiated settlement structure affect the functionality of present water infrastructures. These new challenges require extensive and flexible adaptions or even a long-term and dynamic system change of urban infrastructures. These long-term transformations of infrastructure systems require the design of innovative strategies. In the project presented, environmental engineers together with city planners, mathematicians and computer scientists develop …
Case-Based Reasoning Approach For Managing Water Quality Incidents In Distribution Systems, Stephen Robert Mounce, Richard Mounce, Joby Boxall
Case-Based Reasoning Approach For Managing Water Quality Incidents In Distribution Systems, Stephen Robert Mounce, Richard Mounce, Joby Boxall
International Conference on Hydroinformatics
Access to safe drinking water is universally considered as a fundamental human right and customers regard a reliable supply of safe, clean water as the most important aspect of the water supply service. However, water quality failures do occur, with some of the hardest to understand and manage occurring within distribution systems. In the UK, a regulatory process is applied in which water companies must report on significant water quality incidents, their causes, actions, responses, and outcomes. The Drinking Water Inspectorate (DWI) assesses these reports on an annual basis and their findings are made publically available. It is hypothesised here …
Comparison Of Various Phased Approaches For The Constrained Minimum-Cost Design Of Water Distribution Networks, Enrico Creaco, Marco Franchini, Tom Walski
Comparison Of Various Phased Approaches For The Constrained Minimum-Cost Design Of Water Distribution Networks, Enrico Creaco, Marco Franchini, Tom Walski
International Conference on Hydroinformatics
This work is aimed at analyzing and comparing three different phased approaches for constrained minimum-cost design of water distribution networks: the single-step design with demand feedback, the multi-step design without demand feedback and the multi-step design with demand feedback. The difference between the single-step design and the multi-step design lies in the fact that whereas the former entails optimizing a single construction step at a time, i.e. the current construction phase, the latter is based on the phasing of construction and then is aimed at optimizing the current construction phase and all the subsequent phases, included inside a certain temporal …
Sustainability Of Dual Water Distribution Systems For Fire Flow Condition, Nazli Yonca Aydin, Larry Mays, Theo G. Schmitt
Sustainability Of Dual Water Distribution Systems For Fire Flow Condition, Nazli Yonca Aydin, Larry Mays, Theo G. Schmitt
International Conference on Hydroinformatics
The objective of this study is to compare the sustainability of current water systems when a dual water distribution system (WDS) is used for the non-potable water purposes of fire protection, irrigation, and toilet flushing. Sustainability of urban WDS is evaluated in terms of hydraulic efficiency and water quality. The first step is to assess sustainability of an example urban WDS by using sustainability index (SI). The SI is measured by reliability, resiliency, and vulnerability performance indices. Pressure and water age are selected as main parameters to determine sustainability. Once the SIs for pressure and water age are calculated by …
A Diagnostic Assessment Of Evolutionary Multiobjective Optimization For Water Resources Systems, Patrick M. Reed
A Diagnostic Assessment Of Evolutionary Multiobjective Optimization For Water Resources Systems, Patrick M. Reed
International Conference on Hydroinformatics
This study contributes a rigorous diagnostic assessment of state-of-the-art multiobjective evolutionary algorithms (MOEAs) and highlights key advances that the water resources field can exploit to better discover the critical tradeoffs constraining our systems. This study provides the most comprehensive diagnostic assessment of MOEAs for water resources to date, exploiting more than 100,000 MOEA runs and trillions of design evaluations. The diagnostic assessment measures the effectiveness, efficiency, reliability, and controllability of ten benchmark MOEAs for a representative suite of water resources applications addressing rainfall-runoff calibration, long-term groundwater monitoring (LTM), and risk-based water supply portfolio planning. The suite of problems encompasses a …
Risk Based Analysis For Assessment Of Integrated Urban Water System Watermet2 Model: A Case Study Of Oslo, Rita Maria Ugarelli, Kourosh Behzadian, Maria Ceu Almeida, Tonino Liserra, Patrick Smeets, Zoran Kapelan
Risk Based Analysis For Assessment Of Integrated Urban Water System Watermet2 Model: A Case Study Of Oslo, Rita Maria Ugarelli, Kourosh Behzadian, Maria Ceu Almeida, Tonino Liserra, Patrick Smeets, Zoran Kapelan
International Conference on Hydroinformatics
Integrated urban water systems (IUWSs) generally comprise the components related to both water supply and waste water systems. These components are subject to uncertainty in terms of operation, management and information. Hence, assessment of strategies in the IUWSs over the planning horizon should include such a risk analysis of these uncertainties. Owning to the complexity of these risks, a comprehensive risk assessment tool needs to be developed. In this paper, a risk assessment tool is presented to support the evaluation of intervention strategies in an IUWS over a planning horizon. The IUWS is modelled by “WaterMet2” which is a simulation, …
Effective Data Management Enables Intelligent Utility Management, Gary L.S. Wong
Effective Data Management Enables Intelligent Utility Management, Gary L.S. Wong
International Conference on Hydroinformatics
Instrumentation and automation plays a vital role to managing the water industry. These systems generate vast amounts of data that must be effectively managed in order to enable intelligent decision making. Time series data management software, commonly known as data historians are used for collecting and managing real-time (time series) information. More advanced software solutions provide a data infrastructure or utility wide Operations Data Management System (ODMS) that stores, manages, calculates, displays, shares, and integrates data from multiple disparate automation and business systems that are used daily in water utilities. These ODMS solutions are proven and have the ability to …
Optimal Design Of Network Partitioning For Water Distribution System Protection From Intentional Contamination, Nardo Armando Di, Michele Di Natale, Dino Musmarra, Giovanni Francesco Santonastaso, Velitchko Tzatchkov, Victor Hugo Alcocer Yamanaka
Optimal Design Of Network Partitioning For Water Distribution System Protection From Intentional Contamination, Nardo Armando Di, Michele Di Natale, Dino Musmarra, Giovanni Francesco Santonastaso, Velitchko Tzatchkov, Victor Hugo Alcocer Yamanaka
International Conference on Hydroinformatics
The intentional contamination of water distribution systems represents one of the major risks for citizens, consequently after 11th September 2001 many international organizations have been concerned about it. The availability at low cost of new monitoring and management devices, controlled by a remote system, allows to define different layouts of the water network in a new paradigm of dynamic layouts of water distribution systems in which an important role is played by water network partitioning and sectorization. Recently the advantages of these techniques have been investigated to analyse their application to the problem of water network protection from the contamination. …
Vikor Application For Climate Change Adaptation Strategies Under Uncertain Environments, Yeonjoo Kim, Eun-Sung Chung, Minwoo Son
Vikor Application For Climate Change Adaptation Strategies Under Uncertain Environments, Yeonjoo Kim, Eun-Sung Chung, Minwoo Son
International Conference on Hydroinformatics
This study developed a decision making frame for climate change adaptation strategies under an uncertain environment. We developed a VIKOR-based procedure, providing a compromise solution with the objective weights of multiple climate change scenarios. We chose a watershed in South Korea and established adaptation alternatives of using the effluents of wastewater treatment plants (WWTPs) in potential sub-watersheds to improve the water quantity and quality situations. Under multiple climate scenarios, the environmental and hydrologic responses of treated wastewater (TWW) use were determined with a hydrologic model and the results were used to derive the sustainability scores of TWW reuse. Finally, sustainability …
Optimal Placement Of Metering Devices For Multiple Purposes, Ramon Perez, Gerard Sanz, Josep Cuguero, Miquel Angel Cuguero
Optimal Placement Of Metering Devices For Multiple Purposes, Ramon Perez, Gerard Sanz, Josep Cuguero, Miquel Angel Cuguero
International Conference on Hydroinformatics
Monitoring devices installed in a huge system like a water network imply a high cost. This cost includes installation and maintenance. Thus the placement of these devices must be optimal. The optimal sensor placement is an issue that comes up in many innovation projects in water networks. The use of models even if the final application does not use them may be crucial in such process. Nevertheless the optimality of the placement may depend highly on the final use of these sensors. In general a better placement may imply a more specific use of the information. This work studies the …
Comparison Of Demand Pattern Calibration In Water Distribution Networks With Geographic And Non-Geographic Parameterization, Gerard Sanz, Ramon Perez
Comparison Of Demand Pattern Calibration In Water Distribution Networks With Geographic And Non-Geographic Parameterization, Gerard Sanz, Ramon Perez
International Conference on Hydroinformatics
Demands are one of the most uncertain parameters in a water distribution network model. A good calibration of the model demands leads to better solutions when using the model for any purpose. A demand pattern calibration methodology that uses a priori information has been developed for calibrating the behaviour of demand groups. Generally, the behaviours of demands in cities are mixed all over the network, contrary to smaller villages where demands are clearly sectorised in residential neighbourhoods, commercial zones and industrial sectors. Demand pattern calibration has a final use for leakage detection and isolation. Detecting a leakage in a pattern …
Lessons Learned In Solving The Contaminant Source Identification In An Online Context, Hervé Ung, Olivier A. Piller, Deuerlein Jochen, Denis Gilbert, Montalvo Idel
Lessons Learned In Solving The Contaminant Source Identification In An Online Context, Hervé Ung, Olivier A. Piller, Deuerlein Jochen, Denis Gilbert, Montalvo Idel
International Conference on Hydroinformatics
Protection of Water Distribution Networks (WDNs) against contamination events has a paramount importance. Either deliberate or accidental contamination of these infrastructures has strong negative consequences from both social and economical point of view. The project SMaRT-OnlineWDN aimed to develop methods and software solutions 1) to detect contamination from non-specific sensors, 2) to maintain an online water quantity and water quality model that is reliable and 3) to use the past model predictions to backtrack the potential sources of contaminations. For source identification, is more reliable velocities from an historical data base a substantial advantage compared to offline velocity predictions? The …
Data Driving Better Decisions In The Great Lakes-St. Lawrence River Basin, Michael Piskur, Becky Pearson
Data Driving Better Decisions In The Great Lakes-St. Lawrence River Basin, Michael Piskur, Becky Pearson
International Conference on Hydroinformatics
The Great Lakes-St. Lawrence River Basin contains approximately twenty percent of the world’s surface freshwater. The five Great Lakes (Superior, Michigan, Huron, Erie, and Ontario) provide drinking water for 24 million people and support industry, agriculture, and a world-class fishery and ecosystem. The region includes parts of two nations, eight U.S. States and two Canadian Provinces, many Tribes and First Nations, thousands of municipalities and local governments, and a range of stakeholders. These various governments and partners work across borders to manage and protect the region’s water resources and share data and information through a legal and political framework that …
Dynamic Water Quality Modelling Of Tannery Effluents – Bogotá River (Colombia), Tania Fernanda Santos Santos, Luis Alejandro Camacho
Dynamic Water Quality Modelling Of Tannery Effluents – Bogotá River (Colombia), Tania Fernanda Santos Santos, Luis Alejandro Camacho
International Conference on Hydroinformatics
Untreated tannery discharges to rivers are still a common practice in developing countries causing severe pollution. In this paper the development and application of a dynamic water quality model to simulate the impact caused by tannery effluents with high contents of sulphides, chlorides and chromium is presented. The proposed model subroutines, designed and implemented in MATLAB/SIMULINK in this work, were coupled to an existing efficient aggregated dynamic river transport and water quality model of conventional determinands. A Chromium (Cr) transport and fate modeling subroutine was implemented to determine the speciation of Cr3 and Cr6 and the dissolved and particulate fractions …
A Decision Support System For Identifying Real Losses In Water Distribution Networks, Gabriele Freni, Vincenza Notaro, Chiara Maria Fontanazza, Barbara Milici, Valeria Puleo, Mauro De Marchis
A Decision Support System For Identifying Real Losses In Water Distribution Networks, Gabriele Freni, Vincenza Notaro, Chiara Maria Fontanazza, Barbara Milici, Valeria Puleo, Mauro De Marchis
International Conference on Hydroinformatics
The investigation of real losses is of paramount importance for water utility willing to control operational costs and environmental and social impacts of water supply. Real losses reduction could be achieved by continuous maintenance actions and occasional pipe substitutions. Maintenance activities in the distribution network represent one of the largest items in a water utility economic balance and, therefore, any approach aimed at maintenance optimization catches the interest of water managers. These strategies are constrained by the amount of funds, which are usually available not in a single instalment but yearly and spread over a time period of several years. …
Parameterization And Sampling Design For Water Distribution Networks Demand Calibration Using The Singular Value Decomposition: Application To A Real Network, Gerard Sanz, Ramon Perez
Parameterization And Sampling Design For Water Distribution Networks Demand Calibration Using The Singular Value Decomposition: Application To A Real Network, Gerard Sanz, Ramon Perez
International Conference on Hydroinformatics
The availability of a good hydraulic model increases the reliability of the results of methodologies using it. Thus the calibration of the model is a previous step that has to be done. The most uncertain parameters of the model are demands due to their constant variability. However, calibrating these demands requires a high computational cost that can be reduced by redefining the unknown parameters from demands to demand patterns. Besides, the number and location of the used sensors is highly correlated with the definition of such patterns. This paper presents a methodology for parameterizing and selecting sensors using the information …