Fabrizio Pilo | Università degli Studi di Cagliari (original) (raw)

Papers by Fabrizio Pilo

CIRED Workshop 2016, 2016

In future smart distribution networks the expected bidirectional exchange of large amount of data... more In future smart distribution networks the expected bidirectional exchange of large amount of data will create a keen interdependence between electric system and ICT system. In this perspective co-simulation tools are essential to simulate the power distribution system and the ICT system behaviour simultaneously, taking into account the relationship among the two systems. In the paper different ICT solutions for Smart Grids are compared considering their performances in order to estimate their suitability for smart grid applications. Given the complexity of future Smart Grid and the need to include in the studies also the LV distribution networks, the main novelty of the co-simulation tool presented is the ability to simulate different transmission media simultaneously.

Nowadays grid connected Renewable Energy Sources have reached a level that was not even conceivab... more Nowadays grid connected Renewable Energy Sources have reached a level that was not even conceivable just few years ago with serious concerns on power systems’ stability and security. In 2010, the Italian regulatory Authority for electricity, gas and water system (AEEGSI) started the demonstration phase for smart grids by adopting an input based incentive scheme and a competitive selection process in order to award a limited number of projects. All projects are now in the rollout phase and the first data are going to be collected from the field in a real world environment. This paper describes the project status and defines the fundamentals of a regulation mechanism based on different levels of smartness and on the identification of suitable indicators to assess the performances of smart grids and, consequently, to define penalties and/or rewards for DSOs.

Magnetics, IEEE Transactions on, Sep 1, 1998

This paper presents a Tabu Search based strategy which has been applied to optimize the objective... more This paper presents a Tabu Search based strategy which has been applied to optimize the objective function associated to the design of a solenoids system. For this kind of problem, Tabu Search strategies are able to find the global minimum with considerably better performance than that obtained using a Simulated Annealing algorithm. Algorithms used to perform the self-tuning of Tabu Search parameters have also been developed, achieving interesting improvements in terms of computing time and quality of the solutions ...

Electric Power Systems Research

Power and Energy Society …, 2010

... Multi-objective programming for optimal DG ... For each objective function, the boundary solu... more ... Multi-objective programming for optimal DG ... For each objective function, the boundary solutions (with smallest and largest function values) have an infinite distance ... the main cost is associated to the ICT infrastructures and the centralized Distribution Management System (DMS ...

2019 1st International Conference on Energy Transition in the Mediterranean Area (SyNERGY MED)

Energies

At the moment of writing, in Italy, there is an ongoing pandemic of coronavirus disease 2019 (COV... more At the moment of writing, in Italy, there is an ongoing pandemic of coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Its outbreak is leading to severe global socioeconomic disruptions impacting on all economic sectors from tourism, industry and the tertiary sector, up to the operational and opening of public offices, the closure of schools and the organization of families. Measures adopted by the Italian government to deal with the COVID-19 emergency have had direct effects both on people’s daily lives and on the activity of most industrial and commercial production companies. These changes have been unequivocally reflected also on the Italian electricity system, which has shown unprecedented behavior in terms of both energy consumption and volume—and subsequently, in the observed share of renewable and conventional production technologies. The goal of this study is to show the impact on the power industry of all the restri...

2020 IEEE Power & Energy Society General Meeting (PESGM)

Energies

Energy storage systems can improve the uncertainty and variability related to renewable energy so... more Energy storage systems can improve the uncertainty and variability related to renewable energy sources such as wind and solar create in power systems. Aside from applications such as frequency regulation, time-based arbitrage, or the provision of the reserve, where the placement of storage devices is not particularly significant, distributed storage could also be used to improve congestions in the distribution networks. In such cases, the optimal placement of this distributed storage is vital for making a cost-effective investment. Furthermore, the now reached massive spread of distributed renewable energy resources in distribution systems, intrinsically uncertain and non-programmable, together with the new trends in the electric demand, often unpredictable, require a paradigm change in grid planning for properly lead with the uncertainty sources and the distribution system operators (DSO) should learn to support such change. This paper considers the DSO perspective by proposing a m...

Sustainable Energy, Grids and Networks

Energies

The newest Distributed Ledger Technology platforms, which delegate the execution of complex tasks... more The newest Distributed Ledger Technology platforms, which delegate the execution of complex tasks in the form of Smart Contracts, make it possible to devise novel local electricity market frameworks, which are performed in a fully automated fashion. This paper proposes a novel fully automated platform for energy and ancillary service markets in distribution networks, able to run in a decentralized fashion, bypassing the need for a physical central authority. The proposed platform, able to perform the role of Virtual Decentralized Market Authority, shows excellent potential applications in the management of local ancillary service markets in local energy communities of various sizes. The proposed Virtual Decentralized Market Authority showed reasonable running costs and comparable technical management capabilities with respect to a physical, centralized managing authority.

Energy Procedia

In the current distribution system most of existing electrical infrastructure is becoming aged du... more In the current distribution system most of existing electrical infrastructure is becoming aged due to the delayed replacement of assets caused by distribution company's budget constraints. Bearing in mind these aspects, the authors have developed a technique for the evaluation of the distribution system reliability based on a Sequential Monte Carlo (SMC) which takes into account the role of equipment ageing. Real-world examples are provided to illustrate the effect of including ageing system failures into system and individual reliability indexes.

CIRED - Open Access Proceedings Journal

This paper presents the activities of the CIGRE/CIRED C6.25/B5 joint working group (JWG), focusin... more This paper presents the activities of the CIGRE/CIRED C6.25/B5 joint working group (JWG), focusing on the control and automation systems for the future electric networks. This JWG is mainly focused to evaluate the level of automation and control necessary to better manage distribution networks with large penetrations of distributed energy resources, as seen from both the TSO and DSO perspectives.

Simulation tools capturing the interactions of communication and electrical system operation repr... more Simulation tools capturing the interactions of communication and electrical system operation represent a powerful support for fully assessing the potential benefits and impacts of ICT in future smart power distribution network. A strong interest is upon the possibility of exploiting the last generation communication systems for supporting the transition of distribution network towards a smart grid scenario. Having in mind the above, the authors propose a numerical co-simulation tool useful to thoroughly understand the impact of the communication networks on the performance of whole power system dynamics. The co-simulation tool has been purposely developed to simulate the highly time-critical smart grid application of fault management and network reconfiguration and permits reproducing and evaluating the behavior of the public mobile telecommunication system 4G Long Term Evolution (LTE), as communication technology for smart grid applications. Results of the paper demonstrates that L...

IEEE Wireless Communications, 2017

2016 IEEE Power and Energy Society General Meeting (PESGM), 2016

18th International Conference and Exhibition on Electricity Distribution (CIRED 2005), 2005

The improvement of distribution network reliability has become a mandatory requirement imposed by... more The improvement of distribution network reliability has become a mandatory requirement imposed by regulators to distributors. In this context, the widespread integration of distributed generation into the distribution system suggests resorting to the intentional islanding practice for reducing the long interruptions suffered by MV and LV customers. In the paper a procedure based on a sequential Monte Carlo simulation is presented to assess the effects of intentional islanding and to compare this debated practice with the more traditional use of emergency connections. The application of the procedure to an example has allowed pointing out some interesting features of both practices. The most important result is that, even if the use of redundant paths controlled by automation devices still remains the best practice, with the intentional islanding similar results may be achieved without building new lines.

2012 IEEE International Energy Conference and Exhibition (ENERGYCON), 2012

ABSTRACT The main goal of active distribution network operation is the minimization of system cos... more ABSTRACT The main goal of active distribution network operation is the minimization of system cost given by the sum of the costs of energy losses, curtailed energy, reactive support, shed energy, and storage operation. The paper focuses on the use of Distributed Energy Storage, showing that suitable OPF algorithms embedded in the Distribution Management System increase the hosting capacity of distribution system without jeopardizing reliability and minimizing the operation costs. Costs and benefits of energy storage are compared with other no-network solutions and the impact on the efficiency of power delivery is deeply discussed with reference to a small real world case study.

CIRED Workshop 2016, 2016

In future smart distribution networks the expected bidirectional exchange of large amount of data... more In future smart distribution networks the expected bidirectional exchange of large amount of data will create a keen interdependence between electric system and ICT system. In this perspective co-simulation tools are essential to simulate the power distribution system and the ICT system behaviour simultaneously, taking into account the relationship among the two systems. In the paper different ICT solutions for Smart Grids are compared considering their performances in order to estimate their suitability for smart grid applications. Given the complexity of future Smart Grid and the need to include in the studies also the LV distribution networks, the main novelty of the co-simulation tool presented is the ability to simulate different transmission media simultaneously.

Nowadays grid connected Renewable Energy Sources have reached a level that was not even conceivab... more Nowadays grid connected Renewable Energy Sources have reached a level that was not even conceivable just few years ago with serious concerns on power systems’ stability and security. In 2010, the Italian regulatory Authority for electricity, gas and water system (AEEGSI) started the demonstration phase for smart grids by adopting an input based incentive scheme and a competitive selection process in order to award a limited number of projects. All projects are now in the rollout phase and the first data are going to be collected from the field in a real world environment. This paper describes the project status and defines the fundamentals of a regulation mechanism based on different levels of smartness and on the identification of suitable indicators to assess the performances of smart grids and, consequently, to define penalties and/or rewards for DSOs.

Magnetics, IEEE Transactions on, Sep 1, 1998

This paper presents a Tabu Search based strategy which has been applied to optimize the objective... more This paper presents a Tabu Search based strategy which has been applied to optimize the objective function associated to the design of a solenoids system. For this kind of problem, Tabu Search strategies are able to find the global minimum with considerably better performance than that obtained using a Simulated Annealing algorithm. Algorithms used to perform the self-tuning of Tabu Search parameters have also been developed, achieving interesting improvements in terms of computing time and quality of the solutions ...

Electric Power Systems Research

Power and Energy Society …, 2010

... Multi-objective programming for optimal DG ... For each objective function, the boundary solu... more ... Multi-objective programming for optimal DG ... For each objective function, the boundary solutions (with smallest and largest function values) have an infinite distance ... the main cost is associated to the ICT infrastructures and the centralized Distribution Management System (DMS ...

2019 1st International Conference on Energy Transition in the Mediterranean Area (SyNERGY MED)

Energies

At the moment of writing, in Italy, there is an ongoing pandemic of coronavirus disease 2019 (COV... more At the moment of writing, in Italy, there is an ongoing pandemic of coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Its outbreak is leading to severe global socioeconomic disruptions impacting on all economic sectors from tourism, industry and the tertiary sector, up to the operational and opening of public offices, the closure of schools and the organization of families. Measures adopted by the Italian government to deal with the COVID-19 emergency have had direct effects both on people’s daily lives and on the activity of most industrial and commercial production companies. These changes have been unequivocally reflected also on the Italian electricity system, which has shown unprecedented behavior in terms of both energy consumption and volume—and subsequently, in the observed share of renewable and conventional production technologies. The goal of this study is to show the impact on the power industry of all the restri...

2020 IEEE Power & Energy Society General Meeting (PESGM)

Energies

Energy storage systems can improve the uncertainty and variability related to renewable energy so... more Energy storage systems can improve the uncertainty and variability related to renewable energy sources such as wind and solar create in power systems. Aside from applications such as frequency regulation, time-based arbitrage, or the provision of the reserve, where the placement of storage devices is not particularly significant, distributed storage could also be used to improve congestions in the distribution networks. In such cases, the optimal placement of this distributed storage is vital for making a cost-effective investment. Furthermore, the now reached massive spread of distributed renewable energy resources in distribution systems, intrinsically uncertain and non-programmable, together with the new trends in the electric demand, often unpredictable, require a paradigm change in grid planning for properly lead with the uncertainty sources and the distribution system operators (DSO) should learn to support such change. This paper considers the DSO perspective by proposing a m...

Sustainable Energy, Grids and Networks

Energies

The newest Distributed Ledger Technology platforms, which delegate the execution of complex tasks... more The newest Distributed Ledger Technology platforms, which delegate the execution of complex tasks in the form of Smart Contracts, make it possible to devise novel local electricity market frameworks, which are performed in a fully automated fashion. This paper proposes a novel fully automated platform for energy and ancillary service markets in distribution networks, able to run in a decentralized fashion, bypassing the need for a physical central authority. The proposed platform, able to perform the role of Virtual Decentralized Market Authority, shows excellent potential applications in the management of local ancillary service markets in local energy communities of various sizes. The proposed Virtual Decentralized Market Authority showed reasonable running costs and comparable technical management capabilities with respect to a physical, centralized managing authority.

Energy Procedia

In the current distribution system most of existing electrical infrastructure is becoming aged du... more In the current distribution system most of existing electrical infrastructure is becoming aged due to the delayed replacement of assets caused by distribution company's budget constraints. Bearing in mind these aspects, the authors have developed a technique for the evaluation of the distribution system reliability based on a Sequential Monte Carlo (SMC) which takes into account the role of equipment ageing. Real-world examples are provided to illustrate the effect of including ageing system failures into system and individual reliability indexes.

CIRED - Open Access Proceedings Journal

This paper presents the activities of the CIGRE/CIRED C6.25/B5 joint working group (JWG), focusin... more This paper presents the activities of the CIGRE/CIRED C6.25/B5 joint working group (JWG), focusing on the control and automation systems for the future electric networks. This JWG is mainly focused to evaluate the level of automation and control necessary to better manage distribution networks with large penetrations of distributed energy resources, as seen from both the TSO and DSO perspectives.

Simulation tools capturing the interactions of communication and electrical system operation repr... more Simulation tools capturing the interactions of communication and electrical system operation represent a powerful support for fully assessing the potential benefits and impacts of ICT in future smart power distribution network. A strong interest is upon the possibility of exploiting the last generation communication systems for supporting the transition of distribution network towards a smart grid scenario. Having in mind the above, the authors propose a numerical co-simulation tool useful to thoroughly understand the impact of the communication networks on the performance of whole power system dynamics. The co-simulation tool has been purposely developed to simulate the highly time-critical smart grid application of fault management and network reconfiguration and permits reproducing and evaluating the behavior of the public mobile telecommunication system 4G Long Term Evolution (LTE), as communication technology for smart grid applications. Results of the paper demonstrates that L...

IEEE Wireless Communications, 2017

2016 IEEE Power and Energy Society General Meeting (PESGM), 2016

18th International Conference and Exhibition on Electricity Distribution (CIRED 2005), 2005

The improvement of distribution network reliability has become a mandatory requirement imposed by... more The improvement of distribution network reliability has become a mandatory requirement imposed by regulators to distributors. In this context, the widespread integration of distributed generation into the distribution system suggests resorting to the intentional islanding practice for reducing the long interruptions suffered by MV and LV customers. In the paper a procedure based on a sequential Monte Carlo simulation is presented to assess the effects of intentional islanding and to compare this debated practice with the more traditional use of emergency connections. The application of the procedure to an example has allowed pointing out some interesting features of both practices. The most important result is that, even if the use of redundant paths controlled by automation devices still remains the best practice, with the intentional islanding similar results may be achieved without building new lines.

2012 IEEE International Energy Conference and Exhibition (ENERGYCON), 2012

ABSTRACT The main goal of active distribution network operation is the minimization of system cos... more ABSTRACT The main goal of active distribution network operation is the minimization of system cost given by the sum of the costs of energy losses, curtailed energy, reactive support, shed energy, and storage operation. The paper focuses on the use of Distributed Energy Storage, showing that suitable OPF algorithms embedded in the Distribution Management System increase the hosting capacity of distribution system without jeopardizing reliability and minimizing the operation costs. Costs and benefits of energy storage are compared with other no-network solutions and the impact on the efficiency of power delivery is deeply discussed with reference to a small real world case study.