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Maria Luisa DI Silvestre
Engineering Department, University of Palermo, 90100 Palermo, Italy

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Review
Published: 16 May 2020 in Energies
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With the average solar radiation reaching up to 5 kWh/m2, Vietnam is considered as a country showing an excellent potential for solar power production. Since the year 2000, there have been a lot of studies about the potential of this source in Vietnam. So far, many applications of solar power have been implemented on small, medium, and large scales. In fact, the total capacity of current grid-connected solar power plants has exceeded the planned capacity by 2020 nearly 6 times. However, the studies of solar potential in Vietnam are still incomplete. The policies and mechanisms for developing solar power projects have received attention from the authorities but have not been really satisfactory. The infrastructure is still poor and the power system does not keep up with the development of modern grids. This paper reviewed the potential and actual implementation stage of photovoltaic projects in Vietnam. Moreover, the barriers and challenges of institution, technique, economy, and finance have been considered explicitly for the future development of solar energy in Vietnam.

ACS Style

Eleonora Riva Riva Sanseverino; Hang Le Thi Le Thi Thuy; Manh-Hai Pham; Maria Luisa Di Di Silvestre; Ninh Nguyen Nguyen Quang; Salvatore Favuzza. Review of Potential and Actual Penetration of Solar Power in Vietnam. Energies 2020, 13, 2529 .

AMA Style

Eleonora Riva Riva Sanseverino, Hang Le Thi Le Thi Thuy, Manh-Hai Pham, Maria Luisa Di Di Silvestre, Ninh Nguyen Nguyen Quang, Salvatore Favuzza. Review of Potential and Actual Penetration of Solar Power in Vietnam. Energies. 2020; 13 (10):2529.

Chicago/Turabian Style

Eleonora Riva Riva Sanseverino; Hang Le Thi Le Thi Thuy; Manh-Hai Pham; Maria Luisa Di Di Silvestre; Ninh Nguyen Nguyen Quang; Salvatore Favuzza. 2020. "Review of Potential and Actual Penetration of Solar Power in Vietnam." Energies 13, no. 10: 2529.

Journal article
Published: 17 January 2020 in Energies
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Islanded microgrids are small networks that work independently from the main grid. The frequency and voltage in islanded microgrids are affected directly by the output power of distributed generators and power demand variations. In this work, a real-time driven primary regulation, which relies on optimized P-f droop coefficients, is proposed. In all operating conditions, it minimizes the power losses for islanded microgrids. The proposed configuration will allow the optimization modules to interact with each other and adjust parameters producing a suitable power sharing among generators. The methodology is tested based on a hardware-in-the-loop experimental set-up where distributed generators are connected to a group of loads. A parametric analysis is implemented for verification of the effectiveness of the proposed configuration as well as the improvement of the system reliability.

ACS Style

Quynh T.T Tran; Eleonora Riva Sanseverino; Gaetano Zizzo; Maria Luisa Di Silvestre; Tung Lam Nguyen; Quoc-Tuan Tran. Real-Time Minimization Power Losses by Driven Primary Regulation in Islanded Microgrids. Energies 2020, 13, 451 .

AMA Style

Quynh T.T Tran, Eleonora Riva Sanseverino, Gaetano Zizzo, Maria Luisa Di Silvestre, Tung Lam Nguyen, Quoc-Tuan Tran. Real-Time Minimization Power Losses by Driven Primary Regulation in Islanded Microgrids. Energies. 2020; 13 (2):451.

Chicago/Turabian Style

Quynh T.T Tran; Eleonora Riva Sanseverino; Gaetano Zizzo; Maria Luisa Di Silvestre; Tung Lam Nguyen; Quoc-Tuan Tran. 2020. "Real-Time Minimization Power Losses by Driven Primary Regulation in Islanded Microgrids." Energies 13, no. 2: 451.

Journal article
Published: 04 April 2019 in IEEE Transactions on Industry Applications
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The energy blockchain is a distributed Internet protocol for energy transactions between nodes of a power system. Recent applications of the energy blockchain in microgrids only consider the energy transactions between peers without considering the technical issues that can arise, especially when the system is islanded. One contribution of the paper is, thus, to depict a comprehensive framework of the technical and economic management of microgrids in the blockchain era, considering, for the first time, the provision of ancillary services and, in particular, of the voltage regulation service. When more PV nodes are operating in the grid, large reactive power flows may appear in the branches. In order to limit such flows, a reactive optimal power flow (R-OPF) is solved, setting the voltage at the PV buses as variables within prescribed limits. Each PV generator will thus contribute to voltage regulation, receiving a remuneration included in the transaction and certified by the blockchain technology. For showing how this system can work, a test microgrid, where some energy transactions take place, has been considered. For each transaction, the R-OPF assigns the reactive power to the PV buses. The R-OPF is solved by a Glow-worm Swarm Optimizer. Finally, the paper proposes a method for remuneration of reactive power provision; this method, integrated into the blockchain, allows evaluating the contribution to voltage regulation and increases the transparency and cost traceability in the transactions. The application section shows the implementation of a Tendermint-based Energy transaction platform integrating R-OPF and the above cited technical assessments.

ACS Style

Maria Luisa Di Silvestre; Pierluigi Gallo; Mariano Giuseppe Ippolito; Rossano Musca; Eleonora Riva Sanseverino; Quynh Thi Tu Tran; Gaetano Zizzo. Ancillary Services in the Energy Blockchain for Microgrids. IEEE Transactions on Industry Applications 2019, 55, 7310 -7319.

AMA Style

Maria Luisa Di Silvestre, Pierluigi Gallo, Mariano Giuseppe Ippolito, Rossano Musca, Eleonora Riva Sanseverino, Quynh Thi Tu Tran, Gaetano Zizzo. Ancillary Services in the Energy Blockchain for Microgrids. IEEE Transactions on Industry Applications. 2019; 55 (6):7310-7319.

Chicago/Turabian Style

Maria Luisa Di Silvestre; Pierluigi Gallo; Mariano Giuseppe Ippolito; Rossano Musca; Eleonora Riva Sanseverino; Quynh Thi Tu Tran; Gaetano Zizzo. 2019. "Ancillary Services in the Energy Blockchain for Microgrids." IEEE Transactions on Industry Applications 55, no. 6: 7310-7319.

Journal article
Published: 11 January 2019 in IEEE Transactions on Industry Applications
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ACS Style

Pietro Colella; Enrico Pons; Riccardo Tommasini; Maria Luisa Di Silvestre; Eleonora Riva Sanseverino; Gaetano Zizzo. Fall of Potential Measurement of the Earth Resistance in Urban Environments: Accuracy Evaluation. IEEE Transactions on Industry Applications 2019, 55, 2337 -2346.

AMA Style

Pietro Colella, Enrico Pons, Riccardo Tommasini, Maria Luisa Di Silvestre, Eleonora Riva Sanseverino, Gaetano Zizzo. Fall of Potential Measurement of the Earth Resistance in Urban Environments: Accuracy Evaluation. IEEE Transactions on Industry Applications. 2019; 55 (3):2337-2346.

Chicago/Turabian Style

Pietro Colella; Enrico Pons; Riccardo Tommasini; Maria Luisa Di Silvestre; Eleonora Riva Sanseverino; Gaetano Zizzo. 2019. "Fall of Potential Measurement of the Earth Resistance in Urban Environments: Accuracy Evaluation." IEEE Transactions on Industry Applications 55, no. 3: 2337-2346.

Journal article
Published: 24 October 2018 in Energies
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The paper proposes an improved primary regulation method for inverter-interfaced generating units in islanded microgrids. The considered approach employs an off-line minimum losses optimal power flow (OPF) to devise the primary frequency regulation curve’s set-points while satisfying the power balance, frequency and current constraints. In this way, generators will reach an optimized operating point corresponding to a given and unique power flow distribution presenting the minimum power losses. The proposed approach can be particularly interesting for diesel-based islanded microgrids that face, constantly, the issue of reducing their dependency from fossil fuels and of enhancing their generation and distribution efficiency. The Glow-worm Swarm Optimization (GSO) algorithm is selected as a key heuristic tool for solving the optimization problem. The main program is carried out in Matlab environment. A case study with a parametric analysis is implemented and all results are assessed and compared with the conventional droop control method to show the effectiveness of the proposed method as well as the improved reliability of the system.

ACS Style

Quynh T.T Tran; Maria Luisa Di Silvestre; Eleonora Riva Sanseverino; Gaetano Zizzo; Thanh Nam Pham. Driven Primary Regulation for Minimum Power Losses Operation in Islanded Microgrids. Energies 2018, 11, 2890 .

AMA Style

Quynh T.T Tran, Maria Luisa Di Silvestre, Eleonora Riva Sanseverino, Gaetano Zizzo, Thanh Nam Pham. Driven Primary Regulation for Minimum Power Losses Operation in Islanded Microgrids. Energies. 2018; 11 (11):2890.

Chicago/Turabian Style

Quynh T.T Tran; Maria Luisa Di Silvestre; Eleonora Riva Sanseverino; Gaetano Zizzo; Thanh Nam Pham. 2018. "Driven Primary Regulation for Minimum Power Losses Operation in Islanded Microgrids." Energies 11, no. 11: 2890.

Journal article
Published: 10 October 2018 in IEEE Transactions on Industry Applications
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The interconnection of grounding systems of HV-MV stations via the armors of medium voltage cables, is herein analyzed to verify the effects on touch voltages in ground-fault conditions. The major contributions of this paper are two: the analysis of the impact of a HV ground-fault on a Global Grounding System (GGS), and the analysis of the parameters that may affect safety due to the interconnection between HV-MV stations and the GGS. The authors have analyzed cases when the connection of a HV-MV station to a Global Grounding System improves safety, and when may introduce hazards under ground-fault conditions. Two main issues are herein discussed: 1) the transfer of dangerous voltages to substations, due to ground-faults occurring at the HV-MV station; 2) the reduction in the magnitude of the ground potential rise caused by ground-fault conditions at substations, due to the connection of their ground grids to the HV-MV station's grounding system. The paper, by examining various grid configurations, demonstrates that in some instances the inclusion of HV-MV stations in the Global Grounding System may reduce the level of protection against touch voltages, and that this depends on the following elements: the number of MV lines fed by the faulted station, the number of MV-LV substations per line, the value of the ground resistance of the substations, and the distance between the substations. The paper has practical relevance for both utilities distribution systems and industrial facilities supplied by the MV power grid.

ACS Style

Maria Luisa Di Silvestre; Luigi Dusonchet; Salvatore Favuzza; Stefano Mangione; Liliana Mineo; Massimo Mitolo; Eleonora Riva Sanseverino; Gaetano Zizzo. On the Interconnections of HV–MV Stations to Global Grounding Systems. IEEE Transactions on Industry Applications 2018, 55, 1126 -1134.

AMA Style

Maria Luisa Di Silvestre, Luigi Dusonchet, Salvatore Favuzza, Stefano Mangione, Liliana Mineo, Massimo Mitolo, Eleonora Riva Sanseverino, Gaetano Zizzo. On the Interconnections of HV–MV Stations to Global Grounding Systems. IEEE Transactions on Industry Applications. 2018; 55 (2):1126-1134.

Chicago/Turabian Style

Maria Luisa Di Silvestre; Luigi Dusonchet; Salvatore Favuzza; Stefano Mangione; Liliana Mineo; Massimo Mitolo; Eleonora Riva Sanseverino; Gaetano Zizzo. 2018. "On the Interconnections of HV–MV Stations to Global Grounding Systems." IEEE Transactions on Industry Applications 55, no. 2: 1126-1134.

Journal article
Published: 01 October 2018 in Renewable and Sustainable Energy Reviews
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This paper addresses the impact over key power infrastructures of the three main drivers for change of these times: Decarbonization, Digitalization and Decentralization. The three phenomena, according to prominent observers, are affecting all fields of our lives but, in the literature, it is difficult to find an analysis of their impact on electrical power systems. The framework proposed in this paper, based on the main power systems evolution models proposed by CIGRE, uses data from open databases and tries to find out general guidelines for power systems development at a worldwide level. Taking as reference the European and COP21 environmental objectives and beyond, the technological evolution of some key enabling technologies is explored. What emerges is that HV bulk transport links, storage technologies and the so-called digital revolution are taking a leading role in different parts of the world for the development of a deep decarbonization of the electricity sector, of new energy business models at distribution level and of new power distribution architectures.

ACS Style

Maria Luisa Di Silvestre; Salvatore Favuzza; Eleonora Riva Sanseverino; Gaetano Zizzo. How Decarbonization, Digitalization and Decentralization are changing key power infrastructures. Renewable and Sustainable Energy Reviews 2018, 93, 483 -498.

AMA Style

Maria Luisa Di Silvestre, Salvatore Favuzza, Eleonora Riva Sanseverino, Gaetano Zizzo. How Decarbonization, Digitalization and Decentralization are changing key power infrastructures. Renewable and Sustainable Energy Reviews. 2018; 93 ():483-498.

Chicago/Turabian Style

Maria Luisa Di Silvestre; Salvatore Favuzza; Eleonora Riva Sanseverino; Gaetano Zizzo. 2018. "How Decarbonization, Digitalization and Decentralization are changing key power infrastructures." Renewable and Sustainable Energy Reviews 93, no. : 483-498.

Conference paper
Published: 01 June 2018 in 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)
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In the last two decades, starting from the Kyoto protocol, decarbonization has promoted worldwide the rise of distributed generation from renewable energy sources. Currently, Vietnam is still showing a strong dependence on fossil fuels but with a great interest in investing in renewable, especially in photovoltaic (PV) systems. In this paper, the current Vietnamese technical and administrative framework for the connection of PV systems to the power grid is presented and critically compared to the Italian one, in order to define the bases for future cooperation in distributed generation and renewable sectors.

ACS Style

Maria Luisa Di Silvestre; Salvatore Favuzza; Eleonora Riva Sanseverino; Gaetano Zizzo; Trung Nguyen Ngoc; Manh Hai Pham; Truong Giang Nguyen. Technical Rules for Connecting PV Systems to the Distribution Grid: A Critical Comparison of the Italian and Vietnamese Frameworks. 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe) 2018, 1 -5.

AMA Style

Maria Luisa Di Silvestre, Salvatore Favuzza, Eleonora Riva Sanseverino, Gaetano Zizzo, Trung Nguyen Ngoc, Manh Hai Pham, Truong Giang Nguyen. Technical Rules for Connecting PV Systems to the Distribution Grid: A Critical Comparison of the Italian and Vietnamese Frameworks. 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe). 2018; ():1-5.

Chicago/Turabian Style

Maria Luisa Di Silvestre; Salvatore Favuzza; Eleonora Riva Sanseverino; Gaetano Zizzo; Trung Nguyen Ngoc; Manh Hai Pham; Truong Giang Nguyen. 2018. "Technical Rules for Connecting PV Systems to the Distribution Grid: A Critical Comparison of the Italian and Vietnamese Frameworks." 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe) , no. : 1-5.

Journal article
Published: 15 February 2018 in IEEE Transactions on Industrial Informatics
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The present paper considers some technical issues related to the energy blockchain paradigm applied to microgrids. In particular, what appears from the study is that the superposition of energy transactions in a microgrid creates a variation of the power losses in all the branches of the microgrid. Traditional power losses allocation in distribution systems takes into account only generators while, in this work, a real-time attribution of power losses to each transaction involving one generator and one load node is done by defining some suitable indices. Besides, the presence of P-V nodes increases the level of reactive flows and provides a more complex technical perspective. For this reason, reactive power generation for voltage support at P-V nodes poses a further problem of reactive power flow exchange, that is worth of investigation in future works in order to define a possible way of remuneration. The experimental section of the paper considers a Medium Voltage microgrid and two different operational scenarios.

ACS Style

Maria Luisa Di Silvestre; Pierluigi Gallo; Mariano Giuseppe Ippolito; Eleonora Riva Sanseverino; Gaetano Zizzo. A Technical Approach to the Energy Blockchain in Microgrids. IEEE Transactions on Industrial Informatics 2018, 14, 4792 -4803.

AMA Style

Maria Luisa Di Silvestre, Pierluigi Gallo, Mariano Giuseppe Ippolito, Eleonora Riva Sanseverino, Gaetano Zizzo. A Technical Approach to the Energy Blockchain in Microgrids. IEEE Transactions on Industrial Informatics. 2018; 14 (11):4792-4803.

Chicago/Turabian Style

Maria Luisa Di Silvestre; Pierluigi Gallo; Mariano Giuseppe Ippolito; Eleonora Riva Sanseverino; Gaetano Zizzo. 2018. "A Technical Approach to the Energy Blockchain in Microgrids." IEEE Transactions on Industrial Informatics 14, no. 11: 4792-4803.

Conference paper
Published: 01 June 2017 in 2017 IEEE International Conference on Internet of Things (iThings) and IEEE Green Computing and Communications (GreenCom) and IEEE Cyber, Physical and Social Computing (CPSCom) and IEEE Smart Data (SmartData)
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In recent years novel models for energy distribution appeared and islanded microgrids quest for new ways to exchange energy between consumers and producers without the need of central authorities. The blockchain mechanism has emerged as a distributed solution for recording energy transactions in power systems. The blockchain has been used to permit users bartering and selling energy and to keep track of such exchanges without exposing them to tampering. In this work, we consider a novel application of the blockchain in islanded microgrids that includes also annotating energy losses caused by energy transactions, in order to have a more realistic matching between the physical status of the energy grid and the consequent costs attributed to users. To validate our novel use of the blockchain, we carried out simulated experiments for an exemplary islanded microgrid, in which 3 main generators supply 6 load nodes. This validates the compatibility of this new cost attribution model with the supporting physical infrastructure. Preliminary results demonstrate that the superposition of energy transactions in a microgrid changes the distribution of losses in all paths, eventually due to the large reactive flows created by PV systems.

ACS Style

Eleonora Riva Sanseverino; Maria Luisa Di Silvestre; Pierluigi Gallo; Gaetano Zizzo; Mariano Ippolito. The Blockchain in Microgrids for Transacting Energy and Attributing Losses. 2017 IEEE International Conference on Internet of Things (iThings) and IEEE Green Computing and Communications (GreenCom) and IEEE Cyber, Physical and Social Computing (CPSCom) and IEEE Smart Data (SmartData) 2017, 925 -930.

AMA Style

Eleonora Riva Sanseverino, Maria Luisa Di Silvestre, Pierluigi Gallo, Gaetano Zizzo, Mariano Ippolito. The Blockchain in Microgrids for Transacting Energy and Attributing Losses. 2017 IEEE International Conference on Internet of Things (iThings) and IEEE Green Computing and Communications (GreenCom) and IEEE Cyber, Physical and Social Computing (CPSCom) and IEEE Smart Data (SmartData). 2017; ():925-930.

Chicago/Turabian Style

Eleonora Riva Sanseverino; Maria Luisa Di Silvestre; Pierluigi Gallo; Gaetano Zizzo; Mariano Ippolito. 2017. "The Blockchain in Microgrids for Transacting Energy and Attributing Losses." 2017 IEEE International Conference on Internet of Things (iThings) and IEEE Green Computing and Communications (GreenCom) and IEEE Cyber, Physical and Social Computing (CPSCom) and IEEE Smart Data (SmartData) , no. : 925-930.

Conference paper
Published: 01 June 2017 in 2017 IEEE International Conference on Environment and Electrical Engineering and 2017 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)
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Both EN 50522 and IEEE Std. 81 propose the Fall of Potential Method (FPM) to carry out the measurement of the resistance to earth of an Earthing System (ES). However, in urban areas, the recommended distances between the ES and auxiliary electrodes are not easy to respect, due to the presence of buildings and tarmac. Moreover, unknown buried metallic parts, as well as the interconnection among the ESs made by the Distributor System Operator, could modify the earth potential profile of the area, affecting the measurement results. In this paper, the issues that could affect the measurement result if FPM is used in an urban context are presented. A parametric analysis, carried out with Comsol Multiphysics, quantifies the errors due to wrong positioning of the auxiliary electrodes with reference to the ES under test. In addition, a field measurement is described, emphasizing the main aspects that could compromise the results. Finally, practical suggestions to reduce errors are provided.

ACS Style

Pietro Colella; Enrico Pons; Riccardo Tommasini; Eleonora Riva Sanseverino; Maria Luisa Di Silvestre; Gaetano Zizzo. Earth resistance measurements in urban contexts: Problems and possible solutions. 2017 IEEE International Conference on Environment and Electrical Engineering and 2017 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe) 2017, 1 -6.

AMA Style

Pietro Colella, Enrico Pons, Riccardo Tommasini, Eleonora Riva Sanseverino, Maria Luisa Di Silvestre, Gaetano Zizzo. Earth resistance measurements in urban contexts: Problems and possible solutions. 2017 IEEE International Conference on Environment and Electrical Engineering and 2017 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe). 2017; ():1-6.

Chicago/Turabian Style

Pietro Colella; Enrico Pons; Riccardo Tommasini; Eleonora Riva Sanseverino; Maria Luisa Di Silvestre; Gaetano Zizzo. 2017. "Earth resistance measurements in urban contexts: Problems and possible solutions." 2017 IEEE International Conference on Environment and Electrical Engineering and 2017 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe) , no. : 1-6.

Book chapter
Published: 13 January 2017 in From Smart Grids to Smart Cities
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This chapter reviews a selected set of approaches to urban energy systems study with a special focus on electrical power systems. It proposes urban energy systems as networks of multi-source hybrid energy hubs, where different energy flows are collected at the same bus and can be stored, delivered or transformed as needed. In many works, it is common to find operation and design issues solved for urban microgrids and energy hubs by means of highly efficient software tools often available as freeware. In this work, a wide overview of optimization software tools for microgrid analysis and planning is given. The most common optimization software tools are HOMER and DER-CAM, which can be used to run simulations of urban energy systems. All cited software tools, for both analysis and optimal design and operation, perform simulations referring to an energy planning point of view and none addresses the problem of linking energy features with contextual features.

ACS Style

Eleonora Riva Sanseverino; Vincenzo Domenico Genco; Gianluca Scaccianoce; Valentina Vaccaro; Raffaella Riva Sanseverino; Gaetano Zizzo; Maria Luisa Di Silvestre; Diego Arnone; Giuseppe Paterno. Urban Energy Hubs and Microgrids: Smart Energy Planning for Cities. From Smart Grids to Smart Cities 2017, 129 -175.

AMA Style

Eleonora Riva Sanseverino, Vincenzo Domenico Genco, Gianluca Scaccianoce, Valentina Vaccaro, Raffaella Riva Sanseverino, Gaetano Zizzo, Maria Luisa Di Silvestre, Diego Arnone, Giuseppe Paterno. Urban Energy Hubs and Microgrids: Smart Energy Planning for Cities. From Smart Grids to Smart Cities. 2017; ():129-175.

Chicago/Turabian Style

Eleonora Riva Sanseverino; Vincenzo Domenico Genco; Gianluca Scaccianoce; Valentina Vaccaro; Raffaella Riva Sanseverino; Gaetano Zizzo; Maria Luisa Di Silvestre; Diego Arnone; Giuseppe Paterno. 2017. "Urban Energy Hubs and Microgrids: Smart Energy Planning for Cities." From Smart Grids to Smart Cities , no. : 129-175.

Book chapter
Published: 17 November 2016 in Environmental and Human Impact of Buildings
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The depletion of energy resources on the one hand, and the population growth on the other, forced the society at all levels (local, national and international) to turn its attention to the identification of new forms of protection of the environment and the waste reduction for a new eco-sustainable way of living. The process of massive urbanization already in place, exacerbated by the movement of large masses of people in search of a more human form of life, is putting severely under test the livability within our cities, bringing out the inefficiency of existing management and organization models. Daisaku Ikeda said: “Certainly, the density of urban populations means that problems are concentrated in one place, as is the ecological burden […]. Although the world’s cities only occupy two percent of the Earth’s land area, they account for 75 % of carbon emissions and more than 60 % of energy consumption. While this means that cities’ environmental footprint is disproportionately large, it also reflects the reality that if cities change, the world will change”. The emerging model of the Smart Cities and relevant technologies, however, pose big questions about its social and spiritual sustainability. The Eastern view of the world, however, provides a unifying perspective of science and religion by healing the rift that has emerged over time and that was reflected in many Western cultures and reverberated in many community development models.

ACS Style

M. L. Di Silvestre. A Holistic Vision of Smart Cities: An Opportunity for a Big Change. Environmental and Human Impact of Buildings 2016, 249 -256.

AMA Style

M. L. Di Silvestre. A Holistic Vision of Smart Cities: An Opportunity for a Big Change. Environmental and Human Impact of Buildings. 2016; ():249-256.

Chicago/Turabian Style

M. L. Di Silvestre. 2016. "A Holistic Vision of Smart Cities: An Opportunity for a Big Change." Environmental and Human Impact of Buildings , no. : 249-256.

Conference paper
Published: 03 October 2016 in 2016 IEEE International Smart Cities Conference (ISC2)
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In this work, the application of an original distributed optimal power flow method to test a microgrid in the Savona area, Italy is proposed. The microgrid shows different types of Distributed Energy Resources (DERs) and is connected to the main grid through a fixed power bus. Due to the high computational speed, the applied distributed Optimal Power Flow can be performed almost in real time, i.e. every 5 minutes or less. The operating solution found for generators, simply using local information, corresponds to a suboptimal condition with reduced losses, bus voltages and line currents within constrained intervals. The distributed optimization algorithm is iterative, but also fast. It is based on the use of Kirchhoff and simplified power flow equations and heuristic rules and can be employed for islanded and grid connected medium or small networks. Test results on a real world test system, the Savona Campus “Smart Polygeneration Microgrid” (SPM), prove that a few iterations are enough to converge to a sub-optimal solution.

ACS Style

Luca Buono; Eleonora Riva Sanseverino; Maria Luisa Di Silvestre; Stefano Bracco; Federico Delfino. Distributed optimal power flow for islanded microgrids: An application to the Smart Polygeneration Microgrid of the Genoa University. 2016 IEEE International Smart Cities Conference (ISC2) 2016, 1 -7.

AMA Style

Luca Buono, Eleonora Riva Sanseverino, Maria Luisa Di Silvestre, Stefano Bracco, Federico Delfino. Distributed optimal power flow for islanded microgrids: An application to the Smart Polygeneration Microgrid of the Genoa University. 2016 IEEE International Smart Cities Conference (ISC2). 2016; ():1-7.

Chicago/Turabian Style

Luca Buono; Eleonora Riva Sanseverino; Maria Luisa Di Silvestre; Stefano Bracco; Federico Delfino. 2016. "Distributed optimal power flow for islanded microgrids: An application to the Smart Polygeneration Microgrid of the Genoa University." 2016 IEEE International Smart Cities Conference (ISC2) , no. : 1-7.

Journal article
Published: 12 September 2016 in IEEE Transactions on Industry Applications
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International Standards define a Global Earthing System as an earthing net created interconnecting local Earthing Systems (generally through the shield of MV cables and/or bare buried conductors). In Italy, the regulatory authority for electricity and gas requires distributors to guarantee the electrical continuity of LV neutral conductor. This requirement has led to the standard practice of realizing “reinforcement groundings” along the LV neutral conductor path and at users' delivery cabinet. Moreover, in urban high-load scenarios (prime candidates to be part of a Global Earthing System), it is common that LV distribution scheme creates, through neutral conductors, an effective connection between grounding systems of MV/LV substations, modifying Global Earthing System consistency. The aim of this paper is to evaluate the effect, in terms of electrical safety, of the aforementioned LV neutral distribution scheme when an MV-side fault to ground occurs. For this purpose, simulations are carried out on a realistic urban test case and suitable evaluation indexes are proposed.

ACS Style

Giuseppe Cafaro; Pasquale Montegiglio; Francesco Torelli; Antonino Barresi; Pietro Colella; Angelo De Simone; Maria Luisa Di Silvestre; Luigi Martirano; Elena Reizl Morozova; Roberto Napoli; Giuseppe Parise; Luigi Parise; Enrico Pons; Eleonora Riva Sanseverino; Riccardo Tommasini; Filomena Tummolillo; Giovanni Valtorta; Gaetano Zizzo. Influence of LV Neutral Grounding on Global Earthing Systems. IEEE Transactions on Industry Applications 2016, 53, 22 -31.

AMA Style

Giuseppe Cafaro, Pasquale Montegiglio, Francesco Torelli, Antonino Barresi, Pietro Colella, Angelo De Simone, Maria Luisa Di Silvestre, Luigi Martirano, Elena Reizl Morozova, Roberto Napoli, Giuseppe Parise, Luigi Parise, Enrico Pons, Eleonora Riva Sanseverino, Riccardo Tommasini, Filomena Tummolillo, Giovanni Valtorta, Gaetano Zizzo. Influence of LV Neutral Grounding on Global Earthing Systems. IEEE Transactions on Industry Applications. 2016; 53 (1):22-31.

Chicago/Turabian Style

Giuseppe Cafaro; Pasquale Montegiglio; Francesco Torelli; Antonino Barresi; Pietro Colella; Angelo De Simone; Maria Luisa Di Silvestre; Luigi Martirano; Elena Reizl Morozova; Roberto Napoli; Giuseppe Parise; Luigi Parise; Enrico Pons; Eleonora Riva Sanseverino; Riccardo Tommasini; Filomena Tummolillo; Giovanni Valtorta; Gaetano Zizzo. 2016. "Influence of LV Neutral Grounding on Global Earthing Systems." IEEE Transactions on Industry Applications 53, no. 1: 22-31.

Journal article
Published: 15 October 2015 in Energies
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In this paper, the problem of distributed power losses minimization in islanded distribution systems is dealt with. The problem is formulated in a very simple manner and a solution is reached after a few iterations. The considered distribution system, a microgrid, will not need large bandwidth communication channels, since only closeby nodes will exchange information. The correction of generated active powers is possible by means of the active power losses partition concept that attributes a portion of the overall power losses in each branch to each generator. The experimental part shows the first results of the proposed method on an islanded microgrid. Simulation results of the distributed algorithm are compared to a centralized Optimal Power Flow approach and very small errors can be observed.

ACS Style

Eleonora Riva Sanseverino; Maria Luisa Di Silvestre; Romina Badalamenti; Ninh Quang Nguyen; Josep Maria Guerrero; Lexuan Meng; Ninh Nguyen Quang. Optimal Power Flow in Islanded Microgrids Using a Simple Distributed Algorithm. Energies 2015, 8, 11493 -11514.

AMA Style

Eleonora Riva Sanseverino, Maria Luisa Di Silvestre, Romina Badalamenti, Ninh Quang Nguyen, Josep Maria Guerrero, Lexuan Meng, Ninh Nguyen Quang. Optimal Power Flow in Islanded Microgrids Using a Simple Distributed Algorithm. Energies. 2015; 8 (10):11493-11514.

Chicago/Turabian Style

Eleonora Riva Sanseverino; Maria Luisa Di Silvestre; Romina Badalamenti; Ninh Quang Nguyen; Josep Maria Guerrero; Lexuan Meng; Ninh Nguyen Quang. 2015. "Optimal Power Flow in Islanded Microgrids Using a Simple Distributed Algorithm." Energies 8, no. 10: 11493-11514.

Journal article
Published: 01 September 2015 in Electric Power Systems Research
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The paper presents a method for the study of large interconnected earthing systems in High Voltage networks. The mathematical model proposed for calculating the distribution of the Single-line-to-Earth fault current is useful for a methodical and accurate analysis of complex systems having meshed configuration and more sources, and has practical application for the Transmission System Operator. Two case studies are provided. The first one considers a fault occurring inside and outside a station in a real 220 kV transmission network. In the second example, the proposed methodology is compared with the classical “Double-sided elimination” method.

ACS Style

Gaetano Zizzo; Maria Luisa Di Silvestre; Diego La Cascia; Eleonora Riva Sanseverino. A method for the evaluation of fault current distribution in complex high voltage networks. Electric Power Systems Research 2015, 126, 100 -110.

AMA Style

Gaetano Zizzo, Maria Luisa Di Silvestre, Diego La Cascia, Eleonora Riva Sanseverino. A method for the evaluation of fault current distribution in complex high voltage networks. Electric Power Systems Research. 2015; 126 ():100-110.

Chicago/Turabian Style

Gaetano Zizzo; Maria Luisa Di Silvestre; Diego La Cascia; Eleonora Riva Sanseverino. 2015. "A method for the evaluation of fault current distribution in complex high voltage networks." Electric Power Systems Research 126, no. : 100-110.

Journal article
Published: 10 July 2015 in Journal of Ambient Intelligence and Humanized Computing
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The present work faces the traditional multi-objective optimal reconfiguration problem of a distribution grid including the safety issue in the objective functions. Actually, in many medium voltage networks still transformers with ungrounded neutral and with resonant grounded neutral coexist in the same area. This may be sometimes cause of problems during a single-line-to-ground fault if the ground electrodes of one or more cabins, initially designed for satisfying the safety conditions in a resonant grounded neutral network, after the reconfiguration are in a grounded neutral one or vice versa. In the paper a safety objective function is defined and the Non dominated Sorting Genetic Algorithm II used for solving the optimization problem formulated considering the minimization of the energy losses, the maximization of the load balancing among the transformers, and the minimization of the safety function. The safety function is defined both in the case of independent grounding systems and in the case of grounding systems interconnected by the metal shields of the cables. Also the effects of a Global Grounding System on the multi-objective reconfiguration problem so formulated are discussed. Finally a case study is analyzed presenting also a comparison between the Non dominated Sorting Genetic Algorithm II and a traditional Fuzzy Evolution Strategy algorithm

ACS Style

Giorgio Graditi; Maria Luisa Di Silvestre; Diego La Cascia; Eleonora Riva Sanseverino; Gaetano Zizzo. On multi-objective optimal reconfiguration of MV networks in presence of different grounding. Journal of Ambient Intelligence and Humanized Computing 2015, 7, 97 -105.

AMA Style

Giorgio Graditi, Maria Luisa Di Silvestre, Diego La Cascia, Eleonora Riva Sanseverino, Gaetano Zizzo. On multi-objective optimal reconfiguration of MV networks in presence of different grounding. Journal of Ambient Intelligence and Humanized Computing. 2015; 7 (1):97-105.

Chicago/Turabian Style

Giorgio Graditi; Maria Luisa Di Silvestre; Diego La Cascia; Eleonora Riva Sanseverino; Gaetano Zizzo. 2015. "On multi-objective optimal reconfiguration of MV networks in presence of different grounding." Journal of Ambient Intelligence and Humanized Computing 7, no. 1: 97-105.

Journal article
Published: 01 June 2015 in Electric Power Systems Research
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In this paper, the solution of the optimal power flow (OPF) problem for three phase islanded microgrids is studied, the OPF being one of the core functions of the tertiary regulation level for an AC islanded microgrid with a hierarchical control architecture. The study also aims at evaluating the contextual adjustment of the droop parameters used for primary voltage and frequency regulation of inverter interfaced units. The output of the OPF provides an iso-frequential operating point for all the generation units and a set of droop parameters for primary regulation. In this way, secondary regulation can be neglected in the considered hierarchical control structure. The application section provides the solution of the OPF problem over networks of different sizes and a stability analysis of the microgrid system using the optimized droop parameters, thus giving rise to the optimized management of the system with a new hierarchical control architecture.

ACS Style

Eleonora Riva Sanseverino; Ninh Nguyen Quang; Maria Luisa Di Silvestre; Josep Guerrero; Chendan Li. Optimal power flow in three-phase islanded microgrids with inverter interfaced units. Electric Power Systems Research 2015, 123, 48 -56.

AMA Style

Eleonora Riva Sanseverino, Ninh Nguyen Quang, Maria Luisa Di Silvestre, Josep Guerrero, Chendan Li. Optimal power flow in three-phase islanded microgrids with inverter interfaced units. Electric Power Systems Research. 2015; 123 ():48-56.

Chicago/Turabian Style

Eleonora Riva Sanseverino; Ninh Nguyen Quang; Maria Luisa Di Silvestre; Josep Guerrero; Chendan Li. 2015. "Optimal power flow in three-phase islanded microgrids with inverter interfaced units." Electric Power Systems Research 123, no. : 48-56.

Journal article
Published: 13 June 2014 in IEEE Transactions on Industrial Informatics
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In this paper, an optimal power dispatch problem on a 24-h basis for distribution systems with distributed energy resources (DER) also including directly controlled shiftable loads is presented. In the literature, the optimal energy management problems in smart grids (SGs) where such types of loads exist are formulated using integer or mixed integer variables. In this paper, a new formulation of shiftable loads is employed. Such formulation allows reduction in the number of optimization variables and the adoption of real valued optimization methods such as the one proposed in this paper. The method applied is a novel nature-inspired multiobjective optimization algorithm based on an original extension of a glowworm swarm particles optimization algorithm, with algorithmic enhancements to treat multiple objective formulations. The performance of the algorithm is compared to the NSGA-II on the considered power systems application.

ACS Style

Giorgio Graditi; Maria Luisa Di Silvestre; Roberto Gallea; Eleonora Riva Sanseverino. Heuristic-Based Shiftable Loads Optimal Management in Smart Micro-Grids. IEEE Transactions on Industrial Informatics 2014, 11, 271 -280.

AMA Style

Giorgio Graditi, Maria Luisa Di Silvestre, Roberto Gallea, Eleonora Riva Sanseverino. Heuristic-Based Shiftable Loads Optimal Management in Smart Micro-Grids. IEEE Transactions on Industrial Informatics. 2014; 11 (1):271-280.

Chicago/Turabian Style

Giorgio Graditi; Maria Luisa Di Silvestre; Roberto Gallea; Eleonora Riva Sanseverino. 2014. "Heuristic-Based Shiftable Loads Optimal Management in Smart Micro-Grids." IEEE Transactions on Industrial Informatics 11, no. 1: 271-280.