Sanz Estapé, Gerard
Total activity: 10
Research group
SIC - Smart Control Systems
Department
Department of Automatic Control
E-mail
gerard.sanzupc.edu
Contact details
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Scientific and technological production
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1 to 10 of 10 results
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    Benchmark de control y superivisión de redes de distribución de aguas  Open access

     Sanz Estapé, Gerard; Pérez Magrané, Ramon
    Jornadas de Automática
    Presentation's date: 2013-09-05
    Presentation of work at congresses

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    La disponibilidad de agua potable es posible gracias a las infraestructuras construidas que conforman las redes de distribucion. Las compañías de agua son las encargadas de mantener estas redes en buen estado, así como asegurar unas condiciones de calidad y presion en el consumidor final. Estas condiciones se verifican mediante medidas realizadas en los sensores de la red. Si se dispone del modelo de la red de distribución de agua, estas medidas pueden utilizarse tambien para su calibración, así como en metodologías de deteccióon de fugas [3], control de la calidad del agua [2], etc. Estas metodologías se desarrollan en lenguaje Matlab, combinadas con otros entornos que permiten la simulación de redes hidraulicas, como EPANET [4]. Este trabajo presenta una interfaz graáfica que combina ambas herramientas, permitiendo su interconexión y facilitando la aplicación por parte del usuario de funciones ya existentes, a la vez que permite incorporar nuevos módulos personalizados.

    La disponibilidad de agua potable es posible gracias a las infraestructuras construidas que conforman las redes de distribuci ón. Las compañías de agua son las encargadas de mantener estas redes en buen estado, as í como asegurar unas condiciones de calidad y presi on en el consumidor fi nal. Estas condiciones se verifi can mediante medidas realizadas en los sensores de la red. Si se dispone del modelo de la red de distribución de agua, estas medidas pueden utilizarse tambi en para su calibraci ón, así como en metodolog ías de detección de fugas [3], control de la calidad del agua [2], etc. Estas metodologí as se desarrollan en lenguaje Matlab, combinadas con otros entornos que permiten la simulaci ón de redes hidr aulicas, como EPANET [4]. Este trabajo presenta una interfaz gr áfica que combina ambas herramientas, permitiendo su interconexi ón y facilitando la aplicaci ón por parte del usuario de funciones ya existentes, a la vez que permite incorporar nuevos m ódulos personalizados.

  • Leakage localization in water networks using fuzzy logic

     Sanz Estapé, Gerard; Pérez Magrané, Ramon; Escobet Canal, Antoni
    Mediterranean Conference on Control and Automation
    Presentation's date: 2012-07-05
    Presentation of work at congresses

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    This paper presents a methodology for leakage localization using FIR (Fuzzy Inductive Reasoning). A real water network situated in Barcelona has been subdivided in zones which could contain a leakage. Two sensors measure pressures on two separated points of the network. A faulty fuzzy model for each zone and sensor is generated. Test data have been used for classification of leakages in order to evaluate how this methodology helps in leakage localization. Results are compared with another isolation methodology. All the work has been done using simulations carried out by EPANET connected with Matlab. FIR applications used are programmed in Matlab too.

  • Pressure control of a large scale water network using integral action

     Sanz Estapé, Gerard; Pérez Magrané, Ramon; Sánchez, R
    IFAC Conference on Advances in PID Control
    Presentation's date: 2012-03-28
    Presentation of work at congresses

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    This paper presents a study of the e ect of performing di erent control structures on a large scale water network. The aim is to keep network pressures stable and to their minimum in order to increase network efficiency and reduce leakage loss. One and two actuators pressure control is presented, including split range pressure control, all based on PID family. Simulations are performed using a simulation model of a real network (Demand Management Area situated in Barcelona). Resulting pressures of di erent control structures are compared. Subsequently, some leakages are introduced to the network to conclude which pressure control structure minimizes best the water loss. Finally, some discussions of the bene ts of using each control structure are presented.

  • Isolation of leakages in water distribution network based on water demand calibration

     Sanz Estapé, Gerard; Pérez Magrané, Ramon
    Tecnología del agua
    Date of publication: 2012-07
    Journal article

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    El objetivo de este artículo es valorar el efecto del calibrado de las demandas de agua en la detección y aislamiento de fugas en las redes de distribución mediante el uso de modelos de simulación hidráulicos [1]. Se utiliza una metodología de detección de fugas basada en técnicas de detección y aislamiento [2] con matrices de sensibilidad [3]. El éxito de los resultados depende del calibrado del modelo y de la precisión de los sensores, cuya inversión se rentabiliza [4] si los modelos hidráulicos están bien calibrados. La incertidumbre que presentan los modelos está provocada por las demandas. La conclusión del estudio pretende valorar el esfuerzo de realizar un mejor modelado de las demandas de una zona frente a los beneficios que esta acción representa

  • Access to the full text
    Abnormal quality detection and isolation in water distribution networks using simulation models  Open access

     Nejjari Akhi-elarab, Fatiha; Pérez Magrané, Ramon; Puig Cayuela, Vicenç; Quevedo Casin, Joseba-jokin; Sarrate Estruch, Ramon; Cuguero Escofet, Miquel Àngel; Sanz Estapé, Gerard; Mirats Tur, Josep Maria
    Drinking water engineering and science
    Date of publication: 2012-11-16
    Journal article

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    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 algorithm which correlates on line the residuals (generated by comparing the available chlorine measurements with their estimations using a model) with the fault sensitivity matrix is used. The proposed methodology has been applied to a District Metered Area (DMA) in the Barcelona network.

    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 algorithm which correlates on line the residuals (generated by comparing the available chlorine measurements with their estimations using a model) with the fault sensitivity matrix is used. The proposed methodology has been applied to a District Metered Area (DMA) in the Barcelona network.

  • SYSTEM HEALTH MANAGEMENT AND RELIABLE CONTROL OF COMPLEX SYSTEMS

     Puig Cayuela, Vicenç; Escobet Canal, Teresa; Saludes Closa, Jordi; Nejjari Akhi-elarab, Fatiha; Morcego Seix, Bernardo; De Las Heras Jimenez, Salvador Augusto; Escobet Canal, Antoni; Comasolivas Font, Ramon; Sarrate Estruch, Ramon; Pérez Magrané, Ramon; Tornil Sin, Sebastian; Masip Alvarez, Albert; Rotondo, Damiano; Vento Maldonado, Jorge Isaac; Blesa Izquierdo, Joaquin; Cuguero Escofet, Miquel Àngel; Romera Formiguera, Juli; Pascual Pañach, Josep; Sanz Estapé, Gerard; Cuguero Escofet, Josep; Quevedo Casin, Joseba-jokin
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  • Localización de fugas en redes de distribución de agua potable

     Pérez Magrané, Ramon; Puig Cayuela, Vicenç; Quevedo Casin, Joseba-jokin; Nejjari Akhi-elarab, Fatiha; Pascual Pañach, Josep; Sanz Estapé, Gerard; Cuguero Escofet, Miquel Àngel; Cembrano Gennari, M.gabriela Elena; Landeros, Edson; Peralta, Antoni; Mirats Tur, Josep Maria; Meseguer, Jordi
    Automática e instrumentación
    Date of publication: 2012-02
    Journal article

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  • 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; Cuguero Escofet, Miquel Àngel; Sanz Estapé, Gerard; Mirats Tur, Josep Maria; Quevedo Casin, Joseba-jokin
    Mediterranean Conference on Control and Automation
    Presentation's date: 2011-06-21
    Presentation of work at congresses

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  • Abnormal Quality Detection and Isolation in Water Distribution Networks using Simulation Models

     Nejjari Akhi-elarab, Fatiha; Pérez Magrané, Ramon; Puig Cayuela, Vicenç; Quevedo Casin, Joseba-jokin; Sarrate Estruch, Ramon; Cuguero Escofet, Miquel Àngel; Sanz Estapé, Gerard; Mirats Tur, Josep Maria
    Computing and Control for the Water Industry
    Presentation's date: 2011-09-06
    Presentation of work at congresses

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    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 algorithm which correlates on line the residuals (generated by comparing the available chlorine measurements with their estimations using a model) with the fault sensitivity matrix is used. The proposed methodology has been applied to a District Metered Area (DMA) in the Barcelona network.

    This paper proposes a model based fault 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 algorithm which correlates on line the residuals, generated by comparing the available chlorine measurements with their estimation using a model, with the fault sensitivity matrix is used. The proposed methodology has been applied to a District Metered Area (DMA) in the Barcelona network.

  • 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 Casin, Joseba-jokin; Sanz Estapé, Gerard; Cuguero Escofet, Miquel Àngel; Peralta, Antoni
    Computing and Control for the Water Industry
    Presentation's date: 2011-09-06
    Presentation of work at congresses

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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 of pressures to leaks [8] is generated using simulation models [1]. Such models are available in water companies. The methodology showed promising results but two main issues appeared. Calibration in models and precision in sensors was required. Investment in sensors could be afforded [6] as long as models were well calibrated enough. The main uncertainty in models lies on demands. This paper presents a study of the effect of an improvement in demand calibration on isolability of leaks. The aim is to quantify the return of an effort in calibrating in terms of leak detection one of the main issues in water industry [2].