Fabrizio Pilo | University of Cagliari (original) (raw)
inproceedings by Fabrizio Pilo
Papers by Fabrizio Pilo
The European Winter Package has underlined the need of taking into account in the network plannin... more The European Winter Package has underlined the need of taking into account in the network planning, smart alternatives to network expansion, in order to increase the hosting capacity without compromising the quality of service. For this aim, it is fundamental a proper modelling of load and generation behaviours within network calculation. To capture the operational aspects that can affect the planning stage, the time variability of demand and generation has to be explicitly represented in the planning calculations. Two are the most suitable approaches proposed: the characterisation and clustering of demand and generation variability in a year, and the identification of typical daily profiles that characterise the seasonal behaviour during a year. In the paper, the comparison of the two approaches will be shown, underlining qualities and faults. The comparison will be performed considering a realistic distribution network, in presence of distributed generation (DG).
This paper presents an overview of the activities of the CIGRE/CIRED C1.C6.37/B5 Joint Working Gr... more This paper presents an overview of the activities of the CIGRE/CIRED C1.C6.37/B5 Joint Working Group (JWG), is studying how transmission and distribution planning scenarios are consistently used to ensure holistic investment decision-making by TSOs and DSOs. The investigation is in the context of growing uncertainty in future energy scenarios due to increasing distributed energy resources (DER), electrification of transport, interconnection, consumer heating, global emissions targets, etc. The C1.C6.37/B5 JWG aims at addressing the following issues: 1) to survey and describe current practices on considering and modelling uncertainties, and risk management in generation, transmission, distribution and demand sides; 2) to survey on transmission and distribution planning under uncertainty and distributors' evaluation of recommendations on planning under uncertainty; 3) to review the investment decision making processes, for transmission and distribution, in different jurisdictions ...
Applied Sciences, 2021
Current trends in electrification of the final energy consumption and towards a massive electrici... more Current trends in electrification of the final energy consumption and towards a massive electricity production from renewables are leading a revolution in the electric distribution system. Indeed, the traditional “fit & forget” planning approach used by Distributors would entail a huge amount of network investment. Therefore, for making these trends economically sustainable, the concept of Smart Distribution Network has been proposed, based on active management of the system and the exploitation of flexibility services provided by Distributed Energy Resources. However, the uncertainties associated to this innovation are holding its acceptance by utilities. For increasing their confidence, new risk-based planning tools are necessary, able to estimate the residual risk connected with each choice and identify solutions that can gradually lead to a full Smart Distribution Network implementation. Battery energy storage systems, owned and operated by Distributors, represent one of these s...
Applied Sciences, 2021
This paper suggests an application of blockchain as an energy open data ledger, designed to save ... more This paper suggests an application of blockchain as an energy open data ledger, designed to save and track data regarding the energy footprint of public buildings and public energy communities. The developed platform permits writing energy production and consumption of public buildings using blockchain-enabled smart meters. Once authenticated on the blockchain, this data can be made available to the public domain for techno-economic analyses for either research studies and internal or third parties audits, increasing, in this way, the perceived transparency of the public institutions. A further feature of the platform, starting on the previously disclosed raw data, allows calculating, validating, and sharing sustainability indicators of public buildings and facilities, allowing the tracking of their improvements in sustainability goals. The paper also provides the preliminary results of a field-test experimentation of the proposed platform on a group of public buildings, highlightin...
The objective of the tutorial is to present the results from the CIGRE/CIRED C6.25/B5 Joint Worki... more The objective of the tutorial is to present the results from the CIGRE/CIRED C6.25/B5 Joint Working Group (JWG) that has worked on the control and automation systems for the future electric networks with particular reference to the TSO/DSO interface. The main focus is on the evaluation of the level of automation and control necessary to better manage distribution networks with large penetrations of Distributed Energy Resources (DERs), as seen from both the TSO and DSO perspectives, and to provide services and information about the two level of management (i.e., at TSO and DSO level).
CIRED - Open Access Proceedings Journal, 2017
Energy storage devices are valuable components of the future smart distribution systems, thanks t... more Energy storage devices are valuable components of the future smart distribution systems, thanks to their ability to increase the flexibility of the overall system and provide a wide range of services to the distribution system operators and customers. However, their costs are still high and they still need economic incentives for their development. These incentives cannot be given to any project but only to those that demonstrate their effectiveness. This evaluation is not easy because it depends on the rate of the energy storage system device, its location on the network, and the kind of services provided. The study proposes a hybrid methodology, based on the combination of a multi-objective optimisation and a cost-benefit analysis in order to build a simple look-up table that easily allows identifying those project proposals that can be considered convenient a priori. 2 Decision-making process Decision making about the development of a future policy, programme or project should normally observe the following five-step process: † identifying objectives, † identifying options for achieving the objectives, † defining the criteria used to compare the options, † analysing the options, and † making choices.
2012 IEEE International Energy Conference and Exhibition (ENERGYCON), 2012
The massive accessing of unbalance and nonlinear loads to a power distribution network may cause ... more The massive accessing of unbalance and nonlinear loads to a power distribution network may cause serious problems on power quality and result in additional power loss and safety risks. Distributed generation (DG) with a converter interface has a flexible adjusting ability and can provide certain unbalance and harmonic compensations to power distribution networks. In this study, an optimal operation method of an active distribution network (ADN) involving the unbalance and harmonic compensation of a converter was proposed. First, the power regulating characteristics of DG were analyzed. Second, an optimization model was constructed to minimize ADN power loss, sum of harmonic voltage squares, and total unbalance of the negative sequence voltage, and multiple constraints, such as converters and network, were considered in the model. Third, the optimization model was transformed into a semidefinite programming model based on the characteristics of the nonconvex and nonlinear original model, thus assuring global convergence and decreasing difficulties in problem solving. Finally, the validity of the proposed algorithm was verified by using IEEE 33-node and 123-node test systems.
Globally, maintaining equilibrium between energy supply and demand is critical in urban areas fac... more Globally, maintaining equilibrium between energy supply and demand is critical in urban areas facing increasing energy consumption and high-speed economic development. As an alternative, the large-scale application of renewable energy, such as solar and wind power, might be a long-term solution in an urban context. This study assessed the overall utilization potential of a building-integrated photovoltaic and wind turbine (BIPvWt) system, which can be applied to a building skin in global urban areas. The first step of this study was to reorganize the large volume of global annual climate data. The data were analyzed by computational fluid dynamic analysis and an energy simulation applicable to the BIPvWt system, which can generate a P max 300 Wp/module with a 15% conversion efficiency from a photovoltaic (PV) system and a 0.149 power coefficient/module from wind turbines in categorized urban contexts and office buildings in specific cities; it was constructed to evaluate and optimize the ratio that can cover the current energy consumption. A diagram of the distribution of the solar and wind energy potential and design guidelines for a building skin were developed. The perspective of balancing the increasing energy consumption using renewable energy in urban areas can be visualized positively in the near future.
8th Mediterranean Conference on Power Generation, Transmission, Distribution and Energy Conversion (MEDPOWER 2012), 2012
Modern planning tools for active distribution networks should integrate network operation practic... more Modern planning tools for active distribution networks should integrate network operation practices in the set of feasible planning alternatives, adopting probabilistic calculations (to capture the uncertain behavior of demand and generation) as well as multi-objective approaches. However, despite the recognized importance of active network solutions, most utilities do not consider such concepts as viable alternatives in their planning processes. Thus, utilities largely follow traditional 'fit and forget' planning approaches, i.e., only network reinforcements to cope with the worst case scenario. One of the reasons of this stagnation is the lack of ad hoc business cases that prove the benefits of active networks. Here, some business cases on real distribution networks have been prepared by using a novel planning tool to deal with all the uncertainties that characterize the future scenarios of distribution systems.
22nd International Conference and Exhibition on Electricity Distribution (CIRED 2013), 2013
The transition from passive to active distribution systems is attractive for the integration of d... more The transition from passive to active distribution systems is attractive for the integration of distributed energy resources, improved reliability, and increased efficiency. This paper shares different concerns and approaches to assess the impact of information and communication technologies (ICTs) on the reliability of active distribution systems, based on the shared experiences of CIGRE Working Group C6.19 "Planning and Optimization Methods for Active Distribution Systems". Particular consideration is given to co-simulation tool functionality, assessment, and data requirements.
AEIT Annual Conference 2013, 2013
ABSTRACT Wireless communication systems will be widely used in modern distribution networks to al... more ABSTRACT Wireless communication systems will be widely used in modern distribution networks to allow the integration of RES and the exploitation of energy storage and active demand without jeopardizing the overall system reliability. ICT is the enabling infrastructure for active distribution, but, since efficiency and reliability of power delivery may be influenced by weather conditions besides the reliability of ICT components, the optimal position and number of antennas must take into account not only the cost for radio stations but also the impact on the expected distribution reliability. In the paper, an NSGA-II multi-objective optimization algorithm to find the optimal location of WiMax antennas is proposed. The impact of the rain-fade is explicitly taken into account with an internal sub-optimization that considers the probability of rain days that can affect the communication between the control centre and DER.
The opportunities deriving from the innovative operation of the distribution systems have been un... more The opportunities deriving from the innovative operation of the distribution systems have been underlined in the Literature and might be useful to accomplish economic, environmental and reliability targets by overcoming the existing barriers to innovation and liberalized market. However, despite such widely accepted conclusions, there is still the lack of methods and tools to help Distribution System Operators (DSO) guide the transition from present distribution systems to the future ones. Furthermore, DSO are well conscious that the transition will necessarily be a step-by-step procedure lasting for several years and claiming for a careful optimization of investments. The paper aims at addressing such crucial questions by using a network planning methodology based on the principle of dynamic programming. In particular, the optimal multi-year development plan of active distribution networks is found by solving a suited set of one-stage problems. Such methodology can be applied under...
Human exposure to extremely low frequency magnetic fields (ELF-MF) at 50 Hz is still a topic of g... more Human exposure to extremely low frequency magnetic fields (ELF-MF) at 50 Hz is still a topic of great interest due to the possible correlation with childhood leukaemia. The estimation of induced electric fields in human tissues exposed to electromagnetic fields (EMFs) strictly depends on several variables which include the dielectric properties of the tissues. In this paper, the influence of the conductivity assignment to foetal tissues at different gestational ages on the estimation of the induced electric field due to ELF-MF exposure at 50 Hz has been quantified by means of a stochastic approach using polynomial chaos theory. The range of variation in conductivity values for each foetal tissue at each stage of pregnancy have been defined through three empirical approaches and the induced electric field in each tissue has been modelled through stochastic dosimetry. The main results suggest that both the peak and median induced electric fields in foetal fat vary by more than 8% at all gestational ages. On the contrary, the electric field induced in foetal brain does not seem to be significantly affected by conductivity data changes. The maximum exposure levels, in terms of the induced electric field found in each specific tissue, were found to be significantly below the basic restrictions indicated in the ICNIRP Guidelines, 2010.
CIRED 2012 Workshop: Integration of Renewables into the Distribution Grid, 2012
A key element on the development of the future active distribution networks is to provide the net... more A key element on the development of the future active distribution networks is to provide the network with storage devices, in order to compensate possible negative effects brought by a large integration of unpredictable generation. Software tools to aid Distributors to correctly assess the effectiveness of the use of storage as an alternative to traditional planning solutions (e.g. upgrading of the distribution lines) can be useful to planner engineers. The tool developed by the authors assists the DSO in defining the best integration strategies of distributed storage systems in distribution networks and in assessing their potential as an option for a more efficient operation and expansion of future electricity distribution networks. Examples derived by a representative distribution network are presented.
IET Conference Publications, 2009
The most innovative concept in the nowadays distribution system is that Distributed Energy Resour... more The most innovative concept in the nowadays distribution system is that Distributed Energy Resources (DERs) are active subjects of the system with new business opportunities from the active management but with the responsibility to assure a proper work of the system working in coordination with DSOs. The Civil Society, the DSO and DER owner are clearly the stakeholders of the systems, that have contrasting and opposite goals; in the paper, the points of view and the needs of system stakeholders has been simulated. For this reason, Multi-Objective approach are used to capture the relationship among players in order to constitute an objective basis to define a regulatory environment with fair incentives for those distribution operators who invest in innovative distribution operation.
2001 IEEE Porto Power Tech Proceedings (Cat. No.01EX502)
... generators; - natural gas, often used as fuel in DG stations, is distributed almost everywher... more ... generators; - natural gas, often used as fuel in DG stations, is distributed almost everywhere ... market contributes to creating opportunities for new utilities in the power generation sector; - T&D ... requires to distribution system engineers to properly take into account its impact in the ...
Abstract Dispersed Generation (DG) is often connected to the network with power-electronic interf... more Abstract Dispersed Generation (DG) is often connected to the network with power-electronic interfaces for a proper coupling with the distribution networks (eg photovoltaic panels, fuel cells, microturbines, wind turbines, etc.). Such power electronics can perforin functions ...
ABSTRACT The increasing penetration of renewable intermittent generation imposes challenges on th... more ABSTRACT The increasing penetration of renewable intermittent generation imposes challenges on the existing distribution infrastructure and the system operator. New power flow patterns may require changes to control strategies, enhanced distribution automation, enforcement of distribution network infrastructure and/or greater degrees of information management and control according to the active distribution network paradigm (ADN). ADN might improve the quality of service or might lead to a more risky distribution system depending on the reliability of its communication and management system. In order to provide a measure of this risk, the reliability of ADNs operation is assessed in the paper with a pseudo sequential Monte Carlo method. The procedure is used to assess the reliability of a given active distribution network in different real case scenarios.
This paper presents an overview of the activities of CIGRE Working Group WG C6.19 (WG), focusing ... more This paper presents an overview of the activities of CIGRE Working Group WG C6.19 (WG), focusing on the planning and optimization of active distribution systems. A key challenge in planning Active Distribution Systems (ADSs) is the uncertainty of the future, i.e., what level of active management will be implemented in practice? How will regulatory frameworks and connection agreements evolve to support ADSs? The present work provides some information about the closer and closer integration between network planning and Demand Side Integration that is foreseen in the future and shows the necessity to develop new tool for ADS planning.
The European Winter Package has underlined the need of taking into account in the network plannin... more The European Winter Package has underlined the need of taking into account in the network planning, smart alternatives to network expansion, in order to increase the hosting capacity without compromising the quality of service. For this aim, it is fundamental a proper modelling of load and generation behaviours within network calculation. To capture the operational aspects that can affect the planning stage, the time variability of demand and generation has to be explicitly represented in the planning calculations. Two are the most suitable approaches proposed: the characterisation and clustering of demand and generation variability in a year, and the identification of typical daily profiles that characterise the seasonal behaviour during a year. In the paper, the comparison of the two approaches will be shown, underlining qualities and faults. The comparison will be performed considering a realistic distribution network, in presence of distributed generation (DG).
This paper presents an overview of the activities of the CIGRE/CIRED C1.C6.37/B5 Joint Working Gr... more This paper presents an overview of the activities of the CIGRE/CIRED C1.C6.37/B5 Joint Working Group (JWG), is studying how transmission and distribution planning scenarios are consistently used to ensure holistic investment decision-making by TSOs and DSOs. The investigation is in the context of growing uncertainty in future energy scenarios due to increasing distributed energy resources (DER), electrification of transport, interconnection, consumer heating, global emissions targets, etc. The C1.C6.37/B5 JWG aims at addressing the following issues: 1) to survey and describe current practices on considering and modelling uncertainties, and risk management in generation, transmission, distribution and demand sides; 2) to survey on transmission and distribution planning under uncertainty and distributors' evaluation of recommendations on planning under uncertainty; 3) to review the investment decision making processes, for transmission and distribution, in different jurisdictions ...
Applied Sciences, 2021
Current trends in electrification of the final energy consumption and towards a massive electrici... more Current trends in electrification of the final energy consumption and towards a massive electricity production from renewables are leading a revolution in the electric distribution system. Indeed, the traditional “fit & forget” planning approach used by Distributors would entail a huge amount of network investment. Therefore, for making these trends economically sustainable, the concept of Smart Distribution Network has been proposed, based on active management of the system and the exploitation of flexibility services provided by Distributed Energy Resources. However, the uncertainties associated to this innovation are holding its acceptance by utilities. For increasing their confidence, new risk-based planning tools are necessary, able to estimate the residual risk connected with each choice and identify solutions that can gradually lead to a full Smart Distribution Network implementation. Battery energy storage systems, owned and operated by Distributors, represent one of these s...
Applied Sciences, 2021
This paper suggests an application of blockchain as an energy open data ledger, designed to save ... more This paper suggests an application of blockchain as an energy open data ledger, designed to save and track data regarding the energy footprint of public buildings and public energy communities. The developed platform permits writing energy production and consumption of public buildings using blockchain-enabled smart meters. Once authenticated on the blockchain, this data can be made available to the public domain for techno-economic analyses for either research studies and internal or third parties audits, increasing, in this way, the perceived transparency of the public institutions. A further feature of the platform, starting on the previously disclosed raw data, allows calculating, validating, and sharing sustainability indicators of public buildings and facilities, allowing the tracking of their improvements in sustainability goals. The paper also provides the preliminary results of a field-test experimentation of the proposed platform on a group of public buildings, highlightin...
The objective of the tutorial is to present the results from the CIGRE/CIRED C6.25/B5 Joint Worki... more The objective of the tutorial is to present the results from the CIGRE/CIRED C6.25/B5 Joint Working Group (JWG) that has worked on the control and automation systems for the future electric networks with particular reference to the TSO/DSO interface. The main focus is on the evaluation of the level of automation and control necessary to better manage distribution networks with large penetrations of Distributed Energy Resources (DERs), as seen from both the TSO and DSO perspectives, and to provide services and information about the two level of management (i.e., at TSO and DSO level).
CIRED - Open Access Proceedings Journal, 2017
Energy storage devices are valuable components of the future smart distribution systems, thanks t... more Energy storage devices are valuable components of the future smart distribution systems, thanks to their ability to increase the flexibility of the overall system and provide a wide range of services to the distribution system operators and customers. However, their costs are still high and they still need economic incentives for their development. These incentives cannot be given to any project but only to those that demonstrate their effectiveness. This evaluation is not easy because it depends on the rate of the energy storage system device, its location on the network, and the kind of services provided. The study proposes a hybrid methodology, based on the combination of a multi-objective optimisation and a cost-benefit analysis in order to build a simple look-up table that easily allows identifying those project proposals that can be considered convenient a priori. 2 Decision-making process Decision making about the development of a future policy, programme or project should normally observe the following five-step process: † identifying objectives, † identifying options for achieving the objectives, † defining the criteria used to compare the options, † analysing the options, and † making choices.
2012 IEEE International Energy Conference and Exhibition (ENERGYCON), 2012
The massive accessing of unbalance and nonlinear loads to a power distribution network may cause ... more The massive accessing of unbalance and nonlinear loads to a power distribution network may cause serious problems on power quality and result in additional power loss and safety risks. Distributed generation (DG) with a converter interface has a flexible adjusting ability and can provide certain unbalance and harmonic compensations to power distribution networks. In this study, an optimal operation method of an active distribution network (ADN) involving the unbalance and harmonic compensation of a converter was proposed. First, the power regulating characteristics of DG were analyzed. Second, an optimization model was constructed to minimize ADN power loss, sum of harmonic voltage squares, and total unbalance of the negative sequence voltage, and multiple constraints, such as converters and network, were considered in the model. Third, the optimization model was transformed into a semidefinite programming model based on the characteristics of the nonconvex and nonlinear original model, thus assuring global convergence and decreasing difficulties in problem solving. Finally, the validity of the proposed algorithm was verified by using IEEE 33-node and 123-node test systems.
Globally, maintaining equilibrium between energy supply and demand is critical in urban areas fac... more Globally, maintaining equilibrium between energy supply and demand is critical in urban areas facing increasing energy consumption and high-speed economic development. As an alternative, the large-scale application of renewable energy, such as solar and wind power, might be a long-term solution in an urban context. This study assessed the overall utilization potential of a building-integrated photovoltaic and wind turbine (BIPvWt) system, which can be applied to a building skin in global urban areas. The first step of this study was to reorganize the large volume of global annual climate data. The data were analyzed by computational fluid dynamic analysis and an energy simulation applicable to the BIPvWt system, which can generate a P max 300 Wp/module with a 15% conversion efficiency from a photovoltaic (PV) system and a 0.149 power coefficient/module from wind turbines in categorized urban contexts and office buildings in specific cities; it was constructed to evaluate and optimize the ratio that can cover the current energy consumption. A diagram of the distribution of the solar and wind energy potential and design guidelines for a building skin were developed. The perspective of balancing the increasing energy consumption using renewable energy in urban areas can be visualized positively in the near future.
8th Mediterranean Conference on Power Generation, Transmission, Distribution and Energy Conversion (MEDPOWER 2012), 2012
Modern planning tools for active distribution networks should integrate network operation practic... more Modern planning tools for active distribution networks should integrate network operation practices in the set of feasible planning alternatives, adopting probabilistic calculations (to capture the uncertain behavior of demand and generation) as well as multi-objective approaches. However, despite the recognized importance of active network solutions, most utilities do not consider such concepts as viable alternatives in their planning processes. Thus, utilities largely follow traditional 'fit and forget' planning approaches, i.e., only network reinforcements to cope with the worst case scenario. One of the reasons of this stagnation is the lack of ad hoc business cases that prove the benefits of active networks. Here, some business cases on real distribution networks have been prepared by using a novel planning tool to deal with all the uncertainties that characterize the future scenarios of distribution systems.
22nd International Conference and Exhibition on Electricity Distribution (CIRED 2013), 2013
The transition from passive to active distribution systems is attractive for the integration of d... more The transition from passive to active distribution systems is attractive for the integration of distributed energy resources, improved reliability, and increased efficiency. This paper shares different concerns and approaches to assess the impact of information and communication technologies (ICTs) on the reliability of active distribution systems, based on the shared experiences of CIGRE Working Group C6.19 "Planning and Optimization Methods for Active Distribution Systems". Particular consideration is given to co-simulation tool functionality, assessment, and data requirements.
AEIT Annual Conference 2013, 2013
ABSTRACT Wireless communication systems will be widely used in modern distribution networks to al... more ABSTRACT Wireless communication systems will be widely used in modern distribution networks to allow the integration of RES and the exploitation of energy storage and active demand without jeopardizing the overall system reliability. ICT is the enabling infrastructure for active distribution, but, since efficiency and reliability of power delivery may be influenced by weather conditions besides the reliability of ICT components, the optimal position and number of antennas must take into account not only the cost for radio stations but also the impact on the expected distribution reliability. In the paper, an NSGA-II multi-objective optimization algorithm to find the optimal location of WiMax antennas is proposed. The impact of the rain-fade is explicitly taken into account with an internal sub-optimization that considers the probability of rain days that can affect the communication between the control centre and DER.
The opportunities deriving from the innovative operation of the distribution systems have been un... more The opportunities deriving from the innovative operation of the distribution systems have been underlined in the Literature and might be useful to accomplish economic, environmental and reliability targets by overcoming the existing barriers to innovation and liberalized market. However, despite such widely accepted conclusions, there is still the lack of methods and tools to help Distribution System Operators (DSO) guide the transition from present distribution systems to the future ones. Furthermore, DSO are well conscious that the transition will necessarily be a step-by-step procedure lasting for several years and claiming for a careful optimization of investments. The paper aims at addressing such crucial questions by using a network planning methodology based on the principle of dynamic programming. In particular, the optimal multi-year development plan of active distribution networks is found by solving a suited set of one-stage problems. Such methodology can be applied under...
Human exposure to extremely low frequency magnetic fields (ELF-MF) at 50 Hz is still a topic of g... more Human exposure to extremely low frequency magnetic fields (ELF-MF) at 50 Hz is still a topic of great interest due to the possible correlation with childhood leukaemia. The estimation of induced electric fields in human tissues exposed to electromagnetic fields (EMFs) strictly depends on several variables which include the dielectric properties of the tissues. In this paper, the influence of the conductivity assignment to foetal tissues at different gestational ages on the estimation of the induced electric field due to ELF-MF exposure at 50 Hz has been quantified by means of a stochastic approach using polynomial chaos theory. The range of variation in conductivity values for each foetal tissue at each stage of pregnancy have been defined through three empirical approaches and the induced electric field in each tissue has been modelled through stochastic dosimetry. The main results suggest that both the peak and median induced electric fields in foetal fat vary by more than 8% at all gestational ages. On the contrary, the electric field induced in foetal brain does not seem to be significantly affected by conductivity data changes. The maximum exposure levels, in terms of the induced electric field found in each specific tissue, were found to be significantly below the basic restrictions indicated in the ICNIRP Guidelines, 2010.
CIRED 2012 Workshop: Integration of Renewables into the Distribution Grid, 2012
A key element on the development of the future active distribution networks is to provide the net... more A key element on the development of the future active distribution networks is to provide the network with storage devices, in order to compensate possible negative effects brought by a large integration of unpredictable generation. Software tools to aid Distributors to correctly assess the effectiveness of the use of storage as an alternative to traditional planning solutions (e.g. upgrading of the distribution lines) can be useful to planner engineers. The tool developed by the authors assists the DSO in defining the best integration strategies of distributed storage systems in distribution networks and in assessing their potential as an option for a more efficient operation and expansion of future electricity distribution networks. Examples derived by a representative distribution network are presented.
IET Conference Publications, 2009
The most innovative concept in the nowadays distribution system is that Distributed Energy Resour... more The most innovative concept in the nowadays distribution system is that Distributed Energy Resources (DERs) are active subjects of the system with new business opportunities from the active management but with the responsibility to assure a proper work of the system working in coordination with DSOs. The Civil Society, the DSO and DER owner are clearly the stakeholders of the systems, that have contrasting and opposite goals; in the paper, the points of view and the needs of system stakeholders has been simulated. For this reason, Multi-Objective approach are used to capture the relationship among players in order to constitute an objective basis to define a regulatory environment with fair incentives for those distribution operators who invest in innovative distribution operation.
2001 IEEE Porto Power Tech Proceedings (Cat. No.01EX502)
... generators; - natural gas, often used as fuel in DG stations, is distributed almost everywher... more ... generators; - natural gas, often used as fuel in DG stations, is distributed almost everywhere ... market contributes to creating opportunities for new utilities in the power generation sector; - T&D ... requires to distribution system engineers to properly take into account its impact in the ...
Abstract Dispersed Generation (DG) is often connected to the network with power-electronic interf... more Abstract Dispersed Generation (DG) is often connected to the network with power-electronic interfaces for a proper coupling with the distribution networks (eg photovoltaic panels, fuel cells, microturbines, wind turbines, etc.). Such power electronics can perforin functions ...
ABSTRACT The increasing penetration of renewable intermittent generation imposes challenges on th... more ABSTRACT The increasing penetration of renewable intermittent generation imposes challenges on the existing distribution infrastructure and the system operator. New power flow patterns may require changes to control strategies, enhanced distribution automation, enforcement of distribution network infrastructure and/or greater degrees of information management and control according to the active distribution network paradigm (ADN). ADN might improve the quality of service or might lead to a more risky distribution system depending on the reliability of its communication and management system. In order to provide a measure of this risk, the reliability of ADNs operation is assessed in the paper with a pseudo sequential Monte Carlo method. The procedure is used to assess the reliability of a given active distribution network in different real case scenarios.
This paper presents an overview of the activities of CIGRE Working Group WG C6.19 (WG), focusing ... more This paper presents an overview of the activities of CIGRE Working Group WG C6.19 (WG), focusing on the planning and optimization of active distribution systems. A key challenge in planning Active Distribution Systems (ADSs) is the uncertainty of the future, i.e., what level of active management will be implemented in practice? How will regulatory frameworks and connection agreements evolve to support ADSs? The present work provides some information about the closer and closer integration between network planning and Demand Side Integration that is foreseen in the future and shows the necessity to develop new tool for ADS planning.
CIRED 2012 Workshop: Integration of Renewables into the Distribution Grid, 2012
This paper presents an overview of the activities of CIGRE C6.19 Working Group (WG), focusing on ... more This paper presents an overview of the activities of CIGRE C6.19 Working Group (WG), focusing on the planning and optimization of active distribution systems. This builds on the recommendations of CIGRE WG C6.11 that focused on the development and operation of active distribution networks (ADNs). The C6.19 WG aims at addressing the following issues: (i) Survey on the state of the art on planning for active distribution systems; (ii) Requirements of planning methodologies; (iii) Identification of short, medium and long term models for active distribution system planning; (iv) reliability models of active distribution systems; and (v) algorithms for active distribution system expansion and upgrade planning, including demand-side integration and storage. CONCLUSION This paper has presented an overview of the activities of CIGRE C6.19 Working Group (WG), focusing on the planning and optimization of active distribution systems. This builds on the recommendations of CIGRE WG C6.11 that focused on the development and operation of active distribution networks (ADNs). The C6.19 WG aims at addressing the following issues: (i) Survey on the state of the art on planning for active distribution systems; (ii) Requirements of planning methodologies; (iii) Identification of short, medium and long term models for active distribution system planning; (iv) reliability models of active distribution systems; and (v) algorithms for active distribution system expansion and upgrade planning, including demand-side integration and storage.