22 documents found, page 1 of 3
NSGA-II parameterization for the optimal pressure sensor location in water dist...
Ferreira, Bruno; Antunes, André; Carriço, Nelson; Covas, DídiaThe optimal location of pressure sensors is typicallysolved using heuristic algorithms. Non-dominated Sorting Genetic Algorithm II (NSGA-II) is one of the most used algorithms in the water industry, requiring a preliminary parameter tuning process. The lack of guidelines on how to tune model parameters generally limits the use of these algorithms by researchers or practitioners and, as such, fails to be used in...
An information system for infrastructure asset management tailored to portugues...
Carriço, Nelson; Ferreira, Bruno; Antunes, André; Grueau, Cédric; Barreira, Raquel; Mendes, Ana; Covas, Dídia; Monteiro, Laura; Santos, João FilipeThis paper describes a new information system developed as part of the Portuguese R&D project DECIdE. The project aimed at the development of a platform for infrastructure asset management tailored to Portuguese water utilities. The platform allows the integration of different data from several information systems of the water utilities and includes several tools for the performance assessment of the water supp...
Computational Tools for Supporting the Operation and Management of Water Distri...
Carriço, Nelson; Ferreira, Bruno; Antunes, André; Caetano, João; Covas, DídiaThis paper presents a set of computational tools specially developed for supporting the operation and management of water distribution systems towards digital transformation of water services. These tools were developed in the scope of two R&D projects carried out in Portugal, DECIdE and WISDom, during 2018–2022. The DECIdE project focused on the development of tools for importing cadastral and operational data...
Deteção em tempo real de roturas recorrendo a dados de monitorização da rede de...
Ferreira, Bruno; Carriço, Nelson; Covas, DídiaA presente comunicação apresenta a aplicação de uma abordagem estatística para a deteção de roturas em redes de distribuição de água. A abordagem estatística avalia continuamente os dados de caudal, recebidos a partir de um caudalímetro instalado à entrada da rede, e de forma a identificar períodos de medições anómalas. Os eventos de rotura são detetados quando os períodos de medições anómalas excedem uma deter...
A novel methodology for pipe grouping and rehabilitation interventions scheduli...
Caetano, João; Carriço, Nelson; Figueira, José Rui; Covas, DídiaThe establishment of effective medium and long-term rehabilitation strategies is essential to counter the continuous process of deterioration of the water distribution networks. A novel methodology to support pipe rehabilitation planning, including the establishment and scheduling of interventions in the medium and long-term using the graph theory, is developed, and demonstrated using a real case study. This me...
An information system for infrastructure asset management tailored to portugues...
Carriço, Nelson; Ferreira, Bruno; Antunes, André; Gruea, Cédric; Barreira, Raquel; Mendes, Ana; Covas, Dídia; Monteiro, Laura; Brito, IsabelThis paper describes a new information system developed as part of the Portuguese R&D project DECIdE. The project aimed at the development of a platform for infrastructure asset management tailored to Portuguese water utilities. The platform allows the integration of different data from several information systems of the water utilities and includes several tools for the performance assessment of the water supp...
Multi-objective optimization of pressure sensor location for burst detection an...
Ferreira, Bruno; Antunes, André; Carriço, Nelson; Covas, DídiaThis paper proposes a methodology to determine the optimal location of pressure sensors for the simul- taneous calibration of the hydraulic network model and the detection of pipe bursts. The methodology considers a search space reduction process and aims at maximizing nodal pressure sensitivities to both pipe roughness coefficients and pipe burst sizes. A multi-objective optimization problem is formulated for ...
Método multicritério aplicado ao planeamento de reabilitação em redes de distri...
Caetano, João; Carriço, Nelson; Covas, DídiaO presente artigo tem como objetivo a aplicação de um método multicritério de apoio à decisão a um caso de estudo para a definição de condutas candidatas a intervenção de reabilitação. Para tal, escolheu-se o ELECTRE TRI-B, da família dos métodos ELimination Et Choix Traduisant la REalité (ELECTRE), dado que permite uma razoável flexibilidade na priorização de investimentos em reabilitação, comportando desvios,...
Repositório de ferramentas para a gestão de sistemas de distribuição de água
Carriço, Nelson; Ferreira, Bruno; Antunes, André; Caetano, João; Barreira, Raquel; Covas, DídiaNo presente artigo apresenta-se um conjunto de ferramentas, disponíveis em código aberto, para a gestão de sistemas de distribuição de água, desenvolvidas no âmbito dois projetos de investigação, financiados pela Fundação para a Ciência e Tecnologia (FCT), o projeto DECIdE (https://decide.ips.pt/) e o projeto WISDom (https://wisdom.ips.pt/). No âmbito do projeto DECIdE, foram desenvolvidas ferramentas que permi...
Lessons learnt from the application of MCDA sorting methods to pipe network reh...
Caetano, João; Carriço, Nelson; Covas, DídiaMost water distribution networks were built a few decades ago, showing symptoms of deterioration. Additionally, current renewal rates are insufficient to overcome pipe networks’ continuous ageing process. The development of methodologies for assisting the definition of pipe rehabilitation, including which pipes, and when and what financial amounts to allocate to this activity, are of the utmost importance. Thes...