Ponències/Comunicacions de congressos
http://hdl.handle.net/2117/3323
2016-05-01T01:07:06ZPotential externalities savings due to electric vehicle smart charge
http://hdl.handle.net/2117/86395
Potential externalities savings due to electric vehicle smart charge
Benveniste Pérez, Gabriela; Corchero García, Cristina; Cruz Zambrano, Miguel
This work focuses on the analysis developed in order to demonstrate how smart charging, using tailored control algorithms, contributes to minimize the environmental impact and economic costs associated to the electric vehicles under an LCA perspective. The analysis considers the Spanish grid mix profile and specific charging patterns.The LCA methodology adopted implies a comprehensive assessment of the impacts and costs occurring upstream and downstream the charging event. For the environmental analysis, the LCA impact categories are considered, while for the economic assessment, data regarding the costs associated to the electricity price and the pollutants generation have been adopted.
2016-04-28T15:17:03ZBenveniste Pérez, GabrielaCorchero García, CristinaCruz Zambrano, MiguelThis work focuses on the analysis developed in order to demonstrate how smart charging, using tailored control algorithms, contributes to minimize the environmental impact and economic costs associated to the electric vehicles under an LCA perspective. The analysis considers the Spanish grid mix profile and specific charging patterns.The LCA methodology adopted implies a comprehensive assessment of the impacts and costs occurring upstream and downstream the charging event. For the environmental analysis, the LCA impact categories are considered, while for the economic assessment, data regarding the costs associated to the electricity price and the pollutants generation have been adopted.European electric vehicle fleet: driving and charging behaviors
http://hdl.handle.net/2117/86393
European electric vehicle fleet: driving and charging behaviors
Corchero García, Cristina
The electrification of vehicles would be a reality in the coming decades. Statistical results on real electric vehicle usage data is a key point in the development of the electro mobility. A large collection of electric vehicles and charging points have been monitored during three years and the results about the driving and charging patterns are shown in this work. These results may help to develop future policies on, for instance, charging infrastructure location, end-users incentives, or to allow different type of economic analysis such as an evaluation of the electric vehicle integration in the grid, smart-charge impact…
2016-04-28T15:10:46ZCorchero García, CristinaThe electrification of vehicles would be a reality in the coming decades. Statistical results on real electric vehicle usage data is a key point in the development of the electro mobility. A large collection of electric vehicles and charging points have been monitored during three years and the results about the driving and charging patterns are shown in this work. These results may help to develop future policies on, for instance, charging infrastructure location, end-users incentives, or to allow different type of economic analysis such as an evaluation of the electric vehicle integration in the grid, smart-charge impact…Using BCD-CTA for difficult tables: a practical experiment with a real Eurostat table
http://hdl.handle.net/2117/83503
Using BCD-CTA for difficult tables: a practical experiment with a real Eurostat table
Castro Pérez, Jordi; González Alastrué, José Antonio; Hundepool, Anco
CTA is a post-tabular perturbative approach for statistical disclosure control. Its purpose is to compute the closest safe table to the original data, using some distance.
Sensitive cells are adjusted either upwards or downwards (binary decision), and the resulting cells have to be accordingly (and minimally) modi_ed to preserve marginals. For real and large tables, CTA may result in a dicult mixed integer linear problem for some
weights in the objective function. In those situations the Block Coordinate Descent (BCD) heuristic for CTA|which is included in the Tau-Argus CTA distribution|may be used to quickly obtain a feasible, hopefully close to optimality, solution. We present a practical experiment using a large and di_cult real-world table from Eurostat. We will show that, for unitary weights, while the standard CTA can not obtain a solution in about half an hour, the BCD-CTA approach provides a solution in few seconds.
2016-02-26T15:41:16ZCastro Pérez, JordiGonzález Alastrué, José AntonioHundepool, AncoCTA is a post-tabular perturbative approach for statistical disclosure control. Its purpose is to compute the closest safe table to the original data, using some distance.
Sensitive cells are adjusted either upwards or downwards (binary decision), and the resulting cells have to be accordingly (and minimally) modi_ed to preserve marginals. For real and large tables, CTA may result in a dicult mixed integer linear problem for some
weights in the objective function. In those situations the Block Coordinate Descent (BCD) heuristic for CTA|which is included in the Tau-Argus CTA distribution|may be used to quickly obtain a feasible, hopefully close to optimality, solution. We present a practical experiment using a large and di_cult real-world table from Eurostat. We will show that, for unitary weights, while the standard CTA can not obtain a solution in about half an hour, the BCD-CTA approach provides a solution in few seconds.Economic analysis of battery electric storage systems operating in electricity markets
http://hdl.handle.net/2117/82524
Economic analysis of battery electric storage systems operating in electricity markets
Heredia, F.-Javier (Francisco Javier); Riera, Jordi; Mata, Montserrat; Escuer, Joan; Romeu, Jordi
Battery electric storage systems (BESS) in the range of 1-10 MWh is a key technology allowing a more efficient operation of small electricity market producer. The aim of this work is to assess the economic viability of Li-ion based BESS systems for small electricity producers. The results of the ex-post economic analysis performed with real data from the Iberian Electricity Market shows the economic viability of a Li-ion based BESS thanks to the optimal operation in day-ahead and ancillary electricity markets.
2016-02-03T18:04:17ZHeredia, F.-Javier (Francisco Javier)Riera, JordiMata, MontserratEscuer, JoanRomeu, JordiBattery electric storage systems (BESS) in the range of 1-10 MWh is a key technology allowing a more efficient operation of small electricity market producer. The aim of this work is to assess the economic viability of Li-ion based BESS systems for small electricity producers. The results of the ex-post economic analysis performed with real data from the Iberian Electricity Market shows the economic viability of a Li-ion based BESS thanks to the optimal operation in day-ahead and ancillary electricity markets.Solutions to the facility location problem with general Bernoulli demands
http://hdl.handle.net/2117/78990
Solutions to the facility location problem with general Bernoulli demands
Albareda Sambola, Maria; Fernández Aréizaga, Elena; Saldanha da Gama, Francisco
In this work we address the facility location problem with general Bernoulli demands. Extended formulations are proposed for two different outsourcing policies, which allow using sample average approximation for estimating optimal values. In addition, solutions are obtained heuristically and their values compared with the obtained estimates. Numerical results of a series of computational experiments are presented and analyzed.; In this work we address the facility location problem with general Bernoulli demands. Extended formulations are proposed for two different outsourcing policies, which allow using sample average approximation for estimating optimal values. In addition, solutions are obtained heuristically and their values compared with the obtained estimates. Numerical results of a series of computational experiments are presented and analyzed.
2015-11-10T18:59:27ZAlbareda Sambola, MariaFernández Aréizaga, ElenaSaldanha da Gama, FranciscoIn this work we address the facility location problem with general Bernoulli demands. Extended formulations are proposed for two different outsourcing policies, which allow using sample average approximation for estimating optimal values. In addition, solutions are obtained heuristically and their values compared with the obtained estimates. Numerical results of a series of computational experiments are presented and analyzed.
In this work we address the facility location problem with general Bernoulli demands. Extended formulations are proposed for two different outsourcing policies, which allow using sample average approximation for estimating optimal values. In addition, solutions are obtained heuristically and their values compared with the obtained estimates. Numerical results of a series of computational experiments are presented and analyzed.The uncertainty of the energy demand in existing mediterranean urban blocks
http://hdl.handle.net/2117/77469
The uncertainty of the energy demand in existing mediterranean urban blocks
Ortiz, Joana Aina; Salom Tormo, Jaume; Corchero García, Cristina; Guarino, Francesco
The objective of the paper is to describe a stochastic model that has been developed to obtain load
profiles for household electricity. For the study,
several profiles have been generated in order to
simulate the electrical demand of a residential building block or neighbourhood and evaluate the
uncertainty of its energy use. The paper is divided in three different parts: development of the model, validation and determination of the uncertainty demand. In the first parts the basis of the model and how it works is explained. The second one represents the validation of the model, the input data and its results. The last step is focused on a statistical analysis of the electricity demand of a block of dwellings to evaluate minimum number of dwellings needed to estimate the average demand representative of the Mediterranean dwelling with different levels of accuracy
2015-10-07T17:25:00ZOrtiz, Joana AinaSalom Tormo, JaumeCorchero García, CristinaGuarino, FrancescoThe objective of the paper is to describe a stochastic model that has been developed to obtain load
profiles for household electricity. For the study,
several profiles have been generated in order to
simulate the electrical demand of a residential building block or neighbourhood and evaluate the
uncertainty of its energy use. The paper is divided in three different parts: development of the model, validation and determination of the uncertainty demand. In the first parts the basis of the model and how it works is explained. The second one represents the validation of the model, the input data and its results. The last step is focused on a statistical analysis of the electricity demand of a block of dwellings to evaluate minimum number of dwellings needed to estimate the average demand representative of the Mediterranean dwelling with different levels of accuracySistema de gestión energético óptimo para edificios inteligentes con sistemas de generación renovable integrados
http://hdl.handle.net/2117/76528
Sistema de gestión energético óptimo para edificios inteligentes con sistemas de generación renovable integrados
Igualada Gonzalez, Lucia; Corchero García, Cristina; Cruz Zambrano, Miguel
Como solución para los nuevos edificios que desean adquirir la etiqueta de “edificios inteligentes” proponemos un software de gestión energética optima. Se trata de un sistema centralizado capaz de gestionar elementos de generación (por ejemplo, unidades de generación renovables integradas en el edificio), un sistema de almacenamiento y los distintos tipos de demanda que puede generar dicho edificio. Con el objetivo de un control energético total, el sistema consta de tres niveles distintos de gestión y a su vez, con tres modos de funcionamiento diferentes. Para demostrar el funcionamiento de esta herramienta se incluyen los resultados sobre un escenario emulado que consta de una pequeña generación solar, de tres niveles distintos de demanda propia y la demanda de un vehículo eléctrico que a su vez podrá servir de almacenaje energético mientras este permanezca aparcado.
2015-08-28T09:21:51ZIgualada Gonzalez, LuciaCorchero García, CristinaCruz Zambrano, MiguelComo solución para los nuevos edificios que desean adquirir la etiqueta de “edificios inteligentes” proponemos un software de gestión energética optima. Se trata de un sistema centralizado capaz de gestionar elementos de generación (por ejemplo, unidades de generación renovables integradas en el edificio), un sistema de almacenamiento y los distintos tipos de demanda que puede generar dicho edificio. Con el objetivo de un control energético total, el sistema consta de tres niveles distintos de gestión y a su vez, con tres modos de funcionamiento diferentes. Para demostrar el funcionamiento de esta herramienta se incluyen los resultados sobre un escenario emulado que consta de una pequeña generación solar, de tres niveles distintos de demanda propia y la demanda de un vehículo eléctrico que a su vez podrá servir de almacenaje energético mientras este permanezca aparcado.Problemas numéricos con corrección automática: qué se puede y qué se debe hacer
http://hdl.handle.net/2117/27209
Problemas numéricos con corrección automática: qué se puede y qué se debe hacer
González Alastrué, José Antonio
La presente comunicación describe los objetivos, organización, proceso y divulgación de un taller orientado a proporcionar a docentes del campo de la estadística y la investigación operativa (y posiblemente de otros campos) una primera noción sobre la construcción de problemas con la plataforma e-status. El taller se estructura en base a cuatro casos que van incrementando el nivel de complejidad, para ir mostrando diversas posibilidades didácticas a la hora de elaborar buenos ejercicios que hagan reflexionar al estudiante.
2015-04-09T11:13:28ZGonzález Alastrué, José AntonioLa presente comunicación describe los objetivos, organización, proceso y divulgación de un taller orientado a proporcionar a docentes del campo de la estadística y la investigación operativa (y posiblemente de otros campos) una primera noción sobre la construcción de problemas con la plataforma e-status. El taller se estructura en base a cuatro casos que van incrementando el nivel de complejidad, para ir mostrando diversas posibilidades didácticas a la hora de elaborar buenos ejercicios que hagan reflexionar al estudiante.A fast CTA method without the complicating binary decisions
http://hdl.handle.net/2117/23462
A fast CTA method without the complicating binary decisions
Castro Pérez, Jordi; González Alastrué, José Antonio
2014-07-09T14:04:31ZCastro Pérez, JordiGonzález Alastrué, José AntonioAssessing the disclosure risk of CTA-like methods
http://hdl.handle.net/2117/22739
Assessing the disclosure risk of CTA-like methods
Castro Pérez, Jordi
Minimum distance controlled tabular adjustment (CTA) is a recent perturbative approach for statistical disclosure control in tabular data. CTA looks for the closest
safe table, using some particular distance. In this talk we provide empirical results to assess the disclosure risk of the method. A set of 33 instances from the literature and
four different attacker scenarios are considered. The result
s show that, unless the attacker has good information about the original table, CTA has low disclosure risk. This talk summarizes results reported in the paper “Castro, J. (2013). On assessing the disclosure risk of controlled adjustment methods for statistical tabular data, International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 20, 921–941.
2014-04-28T17:19:45ZCastro Pérez, JordiMinimum distance controlled tabular adjustment (CTA) is a recent perturbative approach for statistical disclosure control in tabular data. CTA looks for the closest
safe table, using some particular distance. In this talk we provide empirical results to assess the disclosure risk of the method. A set of 33 instances from the literature and
four different attacker scenarios are considered. The result
s show that, unless the attacker has good information about the original table, CTA has low disclosure risk. This talk summarizes results reported in the paper “Castro, J. (2013). On assessing the disclosure risk of controlled adjustment methods for statistical tabular data, International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 20, 921–941.