Now showing items 1-15 of 15

  • Abnormal quality detection and isolation in water distribution networks using simulation models 

    Nejjari Akhi-Elarab, Fatiha; Pérez Magrané, Ramon; Puig Cayuela, Vicenç; Quevedo Casín, Joseba Jokin; Sarrate Estruch, Ramon; Cugueró Escofet, Miquel Àngel; Sanz Estapé, Gerard; Mirats, J M (2012-11-16)
    Article
    Open Access
    This paper proposes a model based detection and localisation method to deal with abnormal quality levels based on the chlorine measurements and chlorine sensitivity analysis in a water distribution network. A fault isolation ...
  • Abnormal quality detection and isolation in water distribution networks using simulation models 

    Nejjari Akhi-Elarab, Fatiha; Pérez Magrané, Ramon; Puig Cayuela, Vicenç; Quevedo Casín, Joseba Jokin; Cugueró Escofet, Miquel Àngel; Sanz Estapé, Gerard; Mirats Tur, Josep Maria (2011)
    Conference report
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  • Accuracy assessment of leak localisation method depending on available measurements 

    Pérez Magrané, Ramon; Cugueró Escofet, Miquel Àngel; Cugueró Escofet, Josep; Sanz Estapé, Gerard (2013)
    Conference report
    Restricted access - publisher's policy
    Model-based leak localization methods are currently developed and applied to real cases. The performance and success of such methods depend highly both on models [Pérez et al. (2011a)] and the measurements available. The ...
  • Chlorine decay model calibration and comparison: application to a real water network 

    Nejjari Akhi-Elarab, Fatiha; Puig Cayuela, Vicenç; Pérez Magrané, Ramon; Quevedo Casín, Joseba Jokin; Cugueró Escofet, Miquel Àngel; Sanz Estapé, Gerard; Mirats Tur, Josep Maria (2013)
    Conference report
    Open Access
    This work presents a methodology to efficiently calibrate chlorine decay models. The calibration consists in estimating the unknown parameters by comparing the measured and simulated chlorine concentrations at the monitored ...
  • Chlorine decay model calibration and comparison: application to a real water network 

    Nejjari Akhi-Elarab, Fatiha; Puig Cayuela, Vicenç; Pérez Magrané, Ramon; Quevedo Casín, Joseba Jokin; Cugueró Escofet, Miquel Àngel; Sanz Estapé, Gerard; Mirats Tur, Josep Maria (2013)
    Conference report
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    This work presents a methodology to efficiently calibrate chlorine decay models. The calibration consists in estimating the unknown parameters by comparing the measured and simulated chlorine concentrations at the monitored ...
  • Combining contaminant event diagnosis with data validation/reconstruction : application to smart buildings 

    Cugueró Escofet, Miquel Àngel; Christodoulou, Marius; Quevedo Casín, Joseba Jokin; Puig Cayuela, Vicenç; García Valverde, Diego; Michaelides, Michalis P. (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
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    In this work, a combined sensor data validation/reconstruction and contaminant event diagnosis approach is proposed for Smart Building systems, implemented as a twostage approach. In the first stage, sensor communication ...
  • Combining learning in model space fault diagnosis with data validation/reconstruction: Application to the Barcelona water network 

    Quevedo Casín, Joseba Jokin; Chen, Heran; Cugueró Escofet, Miquel Àngel; Tino, Peter; Puig Cayuela, Vicenç; García Valverde, Diego; Sarrate Estruch, Ramon; Yao, Xin (2014-02-14)
    Article
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    In this paper, an integrated data validation/reconstruction and fault diagnosis approach is proposed for critical infrastructure systems. The proposed methodology is implemented in a two-stage approach. In the first stage, ...
  • Inconsistent sensor data detection/correction: application to environmental systems 

    Cugueró Escofet, Miquel Àngel; Quevedo Casín, Joseba Jokin; Puig Cayuela, Vicenç; García Valverde, Diego (2014)
    Conference report
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    In this paper, a data detection/correction approach is proposed for a real environmental monitoring system, in order to provide a reliable dataset when sensor faults occur. This is the case of communication faults that may ...
  • Leak localization in water networks: a model-based methodology using pressure sensors applied to a real network in Barcelona 

    Pérez Magrané, Ramon; Sanz Estapé, Gerard; Puig Cayuela, Vicenç; Quevedo Casín, Joseba Jokin; Cugueró Escofet, Miquel Àngel; Nejjari Akhi-Elarab, Fatiha; Meseguer, Jordi; Cembrano Gennari, Gabriela; Mirats Tur, Josep Maria; Sarrate Estruch, Ramon (2014-08-01)
    Article
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    The efficient distribution of water is a subject of major concern for water utilities and authorities [1]. While some leaks in water distribution networks (WDNs) are unavoidable, one of the main challenges in improving the ...
  • Leakage isolation in water distribution networks: a comparative study of two methodologies on a real case study 

    Pérez Magrané, Ramon; Puig Cayuela, Vicenç; Nejjari Akhi-Elarab, Fatiha; Cugueró Escofet, Miquel Àngel; Sanz Estapé, Gerard; Mirats, J.M; Quevedo Casín, Joseba Jokin (IEEE, 2011)
    Conference report
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  • Leakage location in water distribution networks based on correlation measurement of pressure sensors 

    Quevedo Casín, Joseba Jokin; Cugueró Escofet, Miquel Àngel; Pérez Magrané, Ramon; Nejjari Akhi-Elarab, Fatiha; Puig Cayuela, Vicenç; Mirats Tur, Josep Maria (Internatinal Water Association (IWA), 2011)
    Conference report
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    Leaks are present to some extent in all water-distribution systems. This paper proposes a leakage localisation method based on the pressure measurements and pressure sensitivity analysis of nodes in a water distribution ...
  • Optimal placement of metering devices for multiple purposes 

    Pérez Magrané, Ramon; Sanz Estapé, Gerard; Cugueró Escofet, Miquel Àngel; Cugueró Escofet, Josep (2014)
    Conference report
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    Monitoring devices installed in a huge system like water distribution networks imply a high cost. This cost includes installation and maintenance. Thus, the placement of these devices must be optimal. The optimal sensor ...
  • Sensor data validation and reconstruction in water networks : a methodology and software implementation 

    García Valverde, Diego; Quevedo Casín, Joseba Jokin; Puig Cayuela, Vicenç; Cugueró Escofet, Miquel Àngel (2014)
    Conference report
    Open Access
    In this paper, a data validation and reconstruction methodology that can be applied to the sensors used for real-time monitoring in water networks is presented. On the one hand, a validation approach based on quality levels ...
  • Study of the isolability of leaks in a network depending on calibration of demands 

    Pérez Magrané, Ramon; Nejjari Akhi-Elarab, Fatiha; Puig Cayuela, Vicenç; Quevedo Casín, Joseba Jokin; Cugueró Escofet, Miquel Àngel; Cugueró Escofet, Miquel Àngel; Peralta, Antoni (2011)
    Conference report
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    Using the simulation models a methodology was developed for leakage detection and localisation in a water distribution network [4]. Such methodology is based on fault detection and isolation techniques. Sensitivity matrix ...
  • Temporal/spatial model-based fault diagnosis vs. hidden Markov models change detection method: application to the Barcelona water network 

    Quevedo Casín, Joseba Jokin; Alippi, Cesare; Cugueró Escofet, Miquel Àngel; Ntalampiras, Stavros; Puig Cayuela, Vicenç; Roveri, Manuel; García Valverde, Diego (2013)
    Conference report
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    This paper deals with a comparison of two differ- ent fault diagnosis frameworks. The first method is based on a temporal/spatial model-based analysis by exploiting a-priori information about the system under study, ...