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1. Improving Reliability and Stability of the Power Systems: A Comprehensive Review on the Role of Energy Storage Systems to Enhance Flexibility

Author

Muhammad Muzammal Islam, Tianyou Yu, Giovanni Giannoccaro, Yang Mi, Massimo la Scala, Mohammad Rajabi Nasab, and Jie Wang

Subjects
Power system flexibility, energy storage system, renewable energy, microgrids, end-user applications, ancillary services, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

The rising demand for green energy to reduce carbon emissions is accelerating the integration of renewable energy sources (RESs) like wind and solar power. However, this shift presents significant challenges due to the inherent variability and intermittency of RESs, which impact power system stability and reliability. As a result, there is a growing need for enhanced flexibility to maintain stable and reliable operations. This study reviews recent advancements in power system flexibility enhancement, particularly concerning the integration of RESs, with a focus on the critical role of energy storage systems (ESSs) in mitigating these challenges. ESSs play a vital role in addressing the variability of RESs, supporting grid stability, and enabling energy consumption time shifting. While existing studies discuss power system flexibility, each typically addresses specific aspects. This comprehensive review evaluates flexibility measures for renewable-based electricity in terms of reliability and stability, highlighting the importance of ESSs in transmission, distribution networks, and end-user applications like residential buildings and vehicle-to-grid technologies to enhance overall system flexibility. Additionally, we identify recent challenges, such as the increased risk of grid congestion, frequency deviations, and the need for real-time supply and demand balancing, which necessitate innovative ESS applications. We propose future directions, including a transition pathway to promote the large-scale deployment of diverse ESS technologies to support grid modernization, enhance resilience, and foster sustainable power supply development. Our findings emphasize the growing research into optimizing power system stability and reliability, offering valuable guidance for future research and practical implementation.

Published
2024
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2. Power Systems Simulation and Analysis: A Review on Current Applications and Future Trends in DRTS of Grid-Connected Technologies

Author

Mohammad Rajabi Nasab, Roberto Cometa, Sergio Bruno, Giovanni Giannoccaro, and Massimo la Scala

Subjects
Power systems, transmission systems, real-time (RT) simulation, hardware-in-the-loop (HIL), power hardware-in-the-loop (PHIL), control hardware-in-the-loop (CHIL), Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

Real-time simulation is a well-established approach employed across various domains, predominantly through Hardware-In-the-Loop (HIL) simulation. HIL technology enables more realistic simulations of complex systems, usually achieved by a closed-loop scheme between the hardware under test and the real-time simulator. In the field of power systems, it is also progressively deployed not only for academic aspects but also for industrial applications. A HIL model takes advantage of such merits as alleviating the risk of damage to the major real objects and reducing the cost as well as tedious efforts during the test. Besides, the evolution and increasing computing power of real-time simulators promise the capability to reach more accurate models that closely represent reality. Accordingly, this manuscript aims to investigate some applications of HIL grid-integrated technologies in transmission systems and discuss some future trends and scopes correlating to this context.

Published
2024
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4. Multi-Static Synthetic Aperture Radar for Earth Monitoring: Challenges, Innovative Solutions, and Demonstrations Using Swarms of Drones

Author

Villano, Michelangelo, primary, Mustieles-Pérez, Víctor, additional, Börner, Thomas, additional, Peixoto, Maxwell Nogueira, additional, Ustalli, Nertjana, additional, Mittermayer, Josef, additional, Moreira, Alberto, additional, Kim, Sumin, additional, Scala, Francesca, additional, and Krieger, Gerhard, additional

Published
2023
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6. Supporting a “Glocal” Energy Transition: from Local Energy Communities to Global Simulation Networks

Author

Benedetto, G., primary, Mazza, A., additional, Pons, E., additional, Bompard, E., additional, De Paola, A., additional, Thomas, D., additional, Kotsakis, E., additional, Fulli, G., additional, Vogel, S., additional, Monti, A., additional, Bruno, S., additional, Giannoccaro, G., additional, Scala, M. La, additional, Bonfiglio, A., additional, Invernizzi, M., additional, Rossi, M., additional, De Caro, F., additional, and Villacci, D., additional

Published
2023
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8. Developing Transversal Skills and Strengthening Collaborative Blended Learning Activities in Engineering Education: a Pilot Study

Author

La Scala, Jérémy Alain, Aad, Graciana, Vonèche Cardia, Isabelle, Gillet, Denis, and Kaynak, Okyay

Subjects
learning analytics, science and engineering education, learning experience platform, collaborative learning, transversal skills
Abstract

There is an ongoing debate about the fact that educational models of the industrial age are no longer adequate. Future educational models need to provide students with the abilities to solve complex problems as well as to collaborate and interact to generate new meaning and knowledge. In order to do so, teamwork activities should be pedagogically strengthened and technologically augmented in science and engineering education. This paper presents a pilot study implementing a blended learning scenario in a bachelor course at EPFL. In this framework, digital tools are proposed to support collaboration. The tools considered are a learning experience platform, an integrated Tasks Management Application, as well as a collaborative reporting editor. This article also presents our findings on the usability and adoption of those tools, as well as preliminary results on their impact on engagement and teamwork. We also mention the effect of collaborative writing on contributions. Finally, we draw insightful lessons on engagement, the use of learning analytics, and the peer evaluation of teamwork. This paper contributes to science and engineering education by providing new insights on teamwork activities supported by digital tools in blended learning scenarios.

Published
2022
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19. Ensiel National Energy Transition Real Time Lab: a Novel Tool to Shape the Future Energy System

Author

Benedetto, Giorgio, primary, Bompard, Ettore, additional, Mazza, Andrea, additional, Pons, Enrico, additional, Bruno, Sergio, additional, Giannoccaro, Giovanni, additional, La Scala, Massimo, additional, De Caro, Fabrizio, additional, Bonfiglio, Andrea, additional, Bracco, Stefano, additional, Invernizzi, Marco, additional, Rossi, Mansueto, additional, De Paola, Antonio, additional, Thomas, Dimitrios, additional, Kotsakis, Evangelos, additional, Fulli, Gianluca, additional, and Villacci, Domenico, additional

Published
2022
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30. Volume Changes of Lake Bracciano During the Sentinels Acquisition Period

Author

Frappart, F., primary, Ygorra, B., additional, Riazanoff, S., additional, Salameh, E., additional, Taviani, S., additional, Rossi, D., additional, Mecali, A., additional, Azzela, M.M., additional, Perugini, E., additional, Benveniste, J., additional, Cretaux, J-F., additional, Scala, A., additional, Crisci, A., additional, and Wigneron, J-P., additional

Published
2022
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35. On the identification of PoIs in glucosimeter data

Author

Vizza, Patrizia, primary, Tradigo, Giuseppe, additional, Giancotti, Raffaele, additional, Scala, Francesco, additional, Guzzi, Pietro H, additional, Irace, Concetta, additional, Flesca, Sergio, additional, and Veltri, Pierangelo, additional

Published
2022
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37. Towards an All-Wheel Drive Motorcycle: Dynamic Modeling and Simulation

Author

Sauro Longhi, Giuseppe Antonio Scala, and Andrea Bonci

Subjects
Coupling, General Computer Science, Computer science, medicine.medical_treatment, Work (physics), intelligent transportation systems, General Engineering, 020302 automobile design & engineering, modeling, 02 engineering and technology, All-wheel drive, Front-wheel drive, Vehicle dynamics, Traction (orthopedics), simulation, road vehicles, Automotive engineering, 020303 mechanical engineering & transports, 0203 mechanical engineering, Steering system, medicine, General Materials Science, lcsh:Electrical engineering. Electronics. Nuclear engineering, Representation (mathematics), lcsh:TK1-9971
Abstract

Modern motorcycles are evolving more and more towards complex systems by the increasing integration of mechanical, electrical and control disciplines. All-wheel drive (AWD) vehicles have proven effective to improve vehicle's performances and rider's safety. Despite this, manufacturers have developed few AWD motorcycles and little research has been devoted to them. Obvious difficulties concern torque distribution to the front wheel because of steering system. Nowadays, the integration of technologies eases the implementation of front wheel drive opening new research perspectives. In this work, the dynamic model of an AWD motorcycle with an attached rider is proposed. It represents the first symbolic analysis investigating the effects of front wheel traction on the dynamics of a motorcycle for supporting the design of AWD motorcycles reducing trials and tests on prototypes. The proposed model is parametric with respect to the motorcycle geometry, and it allows to simulate complex operating modes of the AWD, such as cornering phenomena, taking into account coupling of lateral and longitudinal dynamics and tire-road interactions. Unlike other works, here the authors include a full tire model by exploiting theoretical slips of the brush model for tire's aligning moment too, instead of applying a totally empirical representation less suitable for a complete symbolic description. Besides, to simulate the equations of motion, the benefits and disadvantages of using AWD with torque distribution have been pointed out introducing a new handling ratio. Two verification procedures validate the model: one is performed theoretically, the other carries out a comparison with a multibody software, whose model is more sophisticated, this latter embeds all main motorcycle's dynamics. Although radically different, being the first theoretical and the second numerical-computational, both methods exhibit consistent behavior between them, and effectiveness of the former is also consistent with the results of a multibody simulator under the assumptions made.

Published
2020

38. Investigation of the Impacts of Synchronous Generators’ Forced Outage Rates on Reactive Power Market

Author

Hossein Azad, Mojtaba Mohseni, Ehsan Heydarian-Forushani, Seifeddine Ben Elghali, Massimo La Scala, Pronostic-Diagnostic Et CommAnde : Santé et Energie (PECASE), Laboratoire d'Informatique et Systèmes (LIS), and Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI]Engineering Sciences [physics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2021
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47. An Auction-Based Local Market Clearing for Energy Management in a Virtual Power Plant.

Author

Heydarian-Forushani, Ehsan, Ben Elghali, Seifeddine, Zerrougui, Mohamed, La Scala, Massimo, and Mestre, Pascal

Subjects
POWER plant management, RENEWABLE energy sources, STOCHASTIC programming, ENERGY management, POWER plants, POWER resources, DISTRIBUTED power generation
Abstract

Virtual power plant (VPP) concept creates additional benefits for different stakeholders, such as system operators, distributed energy resources’ owners, and aggregators. This article presents an auction-based energy management solution from VPP aggregator point of view. To this end, a network-constrained economic dispatch has been developed taking into account a comprehensive resource portfolio, including the conventional and renewable distributed generations, energy storage units, and flexible loads. The VPP aggregator aims at minimizing its expected costs through optimal dispatch of its own resources as well as purchasing and selling electricity from/to upstream network. To this end, a stochastic programming approach has been employed to consider the generation uncertainty of renewable energy resources as well as day-ahead energy market prices using a set of plausible scenarios. The payments to the prosumers are according to an auction-based pricing method that could be an efficient strategy for the VPP aggregator in order to guarantee fairness among consumers and producers within the VPP. In the auction-based pricing scheme, the electricity price at each local node can be calculated according to the demand and generation in each time slot. The proposed framework is a mixed-integer linear programming problem and solved by the CPLEX solver in the GAMS software. It is noteworthy that the effectiveness of the model has been verified, considering several numerical studies. [ABSTRACT FROM AUTHOR]

Published
2022
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48. Exploiting Classical Planning Grounding in Hybrid PDDL+ Planning Engines

Author

Enrico Scala and Mauro Vallati

Subjects
Hybrid PDDL+ Planning, 050210 logistics & transportation, Context model, Automated Planning, Computer science, Process (engineering), media_common.quotation_subject, Distributed computing, 05 social sciences, 02 engineering and technology, Reuse, Planning Domain Definition Language, Debugging, 0502 economics and business, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, Limit (mathematics), Grounding, media_common, Abstraction (linguistics)
Abstract

Hybrid PDDL+ models are amongst the most advanced models of systems and the resulting problems are notoriously difficult for planners to cope with due to nonlinear behaviours and immense search spaces. This difficulty is exacerbated by the potentially huge size of the fully ground representations that are used by modern planners in order to effectively explore the search space, which can make some problems impossible to tackle, with the result that in several situations the grounding phase has to be done externally or manually. This not only produces a much less compact problem description, but also complicates debugging and model reuse. To overcome the aforementioned limit, in this paper we investigate two simple grounding techniques for PDDL+ problems. The former method we propose extends the simple mechanism of invariance analysis to limit the groundings of operators upfront. The latter proposes to tackle the grounding process by means of a PDDL+ to Classical Planning abstraction. A preliminary experimental analysis over benchmarks coming from real case study shows that not only the grounding can be sped up, but that also problems that were out of the reach before can now be efficiently solved in an automated manner.

Published
2020
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49. From pan-continental to inter-continental systems analyses: planning HVDC corridors in long-term grid studies

Author

Gianluca Fulli, M. La Scala, and A. L'Abbate

Subjects
Global grid, Focus (computing), HVDC, business.industry, Computer science, 020209 energy, 020208 electrical & electronic engineering, Environmental resource management, pan-European modeling, transmission planning, 02 engineering and technology, Grid, techno-economic analysis, Grid based, Term (time), 0202 electrical engineering, electronic engineering, information engineering, Key (cryptography), OPF, business
Abstract

This paper, after providing an overview on key past and ongoing continental studies, with particular focus on European and neighboring regions, presents a methodological approach for an optimal long-term development of an intercontinental grid based on HVDC corridors.

Published
2020
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50. Remote PHIL Distributed Co-Simulation Lab for TSO-DSO-Customer Coordination Studies

Author

Ettore Francesco Bompard, Massimo La Scala, Stefano Frittoli, Andrea Mazza, Giovanni Giannoccaro, Enrico Pons, Carmine Rodio, and Sergio Bruno

Subjects
Power Hardware-in-the-Loop, Remote communication, Computer science, Network packet, 020209 energy, 020208 electrical & electronic engineering, Control (management), Power System Laboratory, 02 engineering and technology, Co-simulation, Smart Grids, computer.software_genre, Microgrids, Real-time Simulation, TSO/DSO Coordination, Smart grid, Real-time simulation, 0202 electrical engineering, electronic engineering, information engineering, Operating system, Architecture, computer
Abstract

The paper presents the results of an on-going collaboration between two Italian universities, Politecnico di Bari (PoliBa) and Politecnico di Torino (PoliTo), for the setting up of a permanent cooperative co-simulation platform, that permits to share real-time laboratory resources for both research and education applications. The two laboratories, LabZERO and G-RTSLab, are located at a geographical distance of about 1,000 km. By sharing their lab resources, PoliBa and PoliTo aim to increase number and extent of the possible methodologies, control apparatus and power devices that can be jointly tested, and to develop specific applications of Remote Power-Hardware-in-the-Loop (R-PHIL) co-simulation in the framework of Transmission-Distribution-Customer coordination. Test results are presented to assess delays in remote communication and to estimate how much sample rate and size of data packets affect such delays. An experimental test of the R-PHIL platform is also presented to demonstrate the stability of the proposed co-simulation architecture.

Published
2020
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