Search results for " Smart grid"

showing 10 items of 52 documents

On the use of narrow band power line as communication technology for medium and low voltage smart grids

2012

The aim of this work is to perform a feasibility study on the power line communication for the development of a new generation of interface devices (IDs) for smart grid applications. More in detail, this paper deals with one of the most important issues on this topic which is the communication system. Among the existing communication technologies, the study is focused on power line communications (PLCs). After a analysis of the state of the art in the field, the main aspects are analyzed, concerning the open issues on the use of PLCs, especially for medium voltage (MV) and low voltage (LV) systems. In this work the use of PLC in MV-LV networks is investigated, by means of simulations and ex…

EngineeringPower Line Communication (PLC)business.industryactive networksOverhead power lineElectrical engineeringCommunications systemlaw.inventionpower system communicationPower-line communicationSmart gridlawsmart gridsdistributionElectronic engineeringPower Line Communication (PLC) smart grids active networks power system communication distribution networksbusinessTransformerSettore ING-INF/07 - Misure Elettriche E ElettronicheLow voltageVoltageActive networking2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings
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Medium Voltage Smart Grid: Experimental Analysis of Secondary Substation Narrow Band Power Line Communication

2013

This paper is focused on the possibility of employing narrow band power line communication (PLC) in medium voltage (MV) distribution networks. The topic is investigated by means of both simulations and experimental tests, which were carried out in the distribution network of Ustica Island. In detail, a two-way MV communication was tested between two secondary substations connected by an MV cable power line. Each substation has a by-pass connection at MV bus-bars and an MV/LV oil filled power transformer. In this paper, the MV and the PLC systems under test are described and the experimental tests are presented, which were carried out to evaluate the parameters of the simulation model. The a…

EngineeringSwitched-mode power supplyPower system communicationPower line communicationsSmart gridPower transformersPower factorEquipment testingCommunication systemsSmart power gridsElectronic engineeringElectrical and Electronic EngineeringInstrumentationElectric power distributionbusiness.industryCommunicationElectrical engineeringAttenuationComputer simulationPower (physics)Power-line communicationElectric power transmissionPower system measurementCommunication equipment testingPower engineeringbusinessAttenuation communication equipment testing communication systems narrow band power line communication power system communication power system measurements smart gridsSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltageIEEE Transactions on Instrumentation and Measurement
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Energy efficient operation in smart grids: optimal management of shiftable loads and storage systems

2012

In this paper, the authors analyze the impact of the participation of customers to the sustainable implementation of energy rational strategies in microgrids. The management of shiftable loads is compared to the control of real and reactive storage systems in smart grids. An optimization algorithm is used as analysis tool to assess the impact of such control variables in different conditions. The results clearly indicate that if shiftable loads are of suitable size, they have a more promising as tools to both reduce losses and to flatten the peak load through the HV/MV bus. Many tests have been carried out on a real experimental MV system in the area of Rome Italy.

Engineeringbusiness.industryControl variableOptimization load management smart gridsControl engineeringOptimal managementAutomotive engineeringlaw.inventionSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaLoad managementCapacitorSmart gridPeak loadlawbusinessEnergy (signal processing)Efficient energy use
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Transition of a Distribution System towards an Active Network. Part I: Preliminary Design and Scenario Perspectives

2011

In an European perspective, the focus of Smart Grids initiatives (SET Plan - Strategic Energy Technology Plan) is strictly linked with the main commitment to achieve the goals of the Climate and Energy Package 20-20-20, at the light of the three main pillars of the European energy policy: competitiveness, sustainability and security of supply. Smart grid technologies will enable load levelling of the electrical grid, allowing a power company to run cleaner power sources - such as hydroelectric, wind, or solar - while reducing the need to use carbon-emitting gas, coal, or oil plants to meet peak demand. In this framework the proposed paper refers about the technical economical feasibility st…

Engineeringbusiness.industryElectrical engineeringEnergy technologyElectrical gridEnergy policyRenewable energySettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaElectric power systemSmart gridPeak demandSystems engineeringRenewable sources power systems smart gridsElectric power industrybusiness
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A comparison of two innovative customer power devices for Smart Micro-Grids

2015

The paper presents a comparison of two prototypes of innovative Customer Power Devices designed for applications in Smart Micro-Grids. The devices are both equipped with Energy Storage Systems, consisting in Lithium batteries and have been assembled, independently, by the DIAEE of the University of Rome 'La Sapienza' and the DEIM of the University of Palermo in collaboration with the Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA). In the paper, the characteristics and the operating modes of the devices are examined and some consideration on their application in Low Voltage Smart Micro-Grids are provided. © 2015 IEEE.

Engineeringbusiness.industryEmerging technologiesElectrical engineeringEnergy Engineering and Power TechnologyDistributed GenerationEnergy StorageSmart GridsEnergy storageSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSmart griddistributed generation; energy storage; LI-ION batteries; smart grids; electrical and electronic engineering; energy engineering and power technologyDistributed generationAgency (sociology)Li-Ion BatterieLi-Ion BatteriesPower semiconductor deviceElectrical and Electronic EngineeringSmart GridSmart Grids;Li-Ion Batteries;Energy Storage;Distributed GenerationbusinessLow voltage2015 IEEE 15th International Conference on Environment and Electrical Engineering (EEEIC)
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Transition of a distribution system towards an active network. Part II: Economical analysis of selected scenario

2011

This paper outlines the economical issues related to the transition of the energy generation for a real MV/LV distribution system from a ‘fuel based’ one to a distributed and smart ‘renewables based’ one. It is the prosecution of a companion paper, which addressed the technical issues connected to such transition. The study has been carried out by University of Palermo and ENEA (Italy), on a portion of real MV/LV distribution system of the research center ENEA of Casaccia (Rome, Italy). The analysis is carried out for a specific scenario chosen among those proposed in the companion paper.

Engineeringbusiness.industryPhotovoltaic systemElectrical engineeringRenewable energySettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaElectric power systemElectricity generationSmart gridSystems engineeringRenewable sources power systems smart gridsElectricitybusinessSettore ING-INF/07 - Misure Elettriche E ElettronicheResearch centerActive networking2011 International Conference on Clean Electrical Power (ICCEP)
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Uncertainty evaluation of a Backward/Forward Load Flow algorithm for a MV smart grid

2015

This paper presents the uncertainty evaluation of an innovative measurement algorithm for load flow analysis in MV distribution networks. The measurement procedure is based on Low Voltage (LV) load power measurements applied on a Backward/Forward (B/F) algorithm for the Load Flow (LF) resolution. Furthermore, in the procedure a three phase voltage measurement at the MV generating substation bus-bars is also considered. The accuracy analysis of the LF algorithm is performed in the case of a real load condition in the distribution grid of Ustica island, Italy. The analysis takes into account the uncertainty of the measurement instruments at the LV side of each secondary substation power trans…

Engineeringbusiness.industryPower system monitoringPower factorSmart gridAC powerLoad flow analysisPower quality analyzerConstant power circuitPower (physics)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaPower system measurements load flow analysis power system monitoring smart grid power quality analyzer advanced metering infrastructureMeasurement uncertaintyAdvanced metering infrastructureVoltage regulationPower-flow studyPower system measurementsbusinessSettore ING-INF/07 - Misure Elettriche E ElettronicheLow voltageAlgorithm
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Narrowband power line communications for medium voltage smart grids

2014

The aim of the paper is to show how narrowband power line communications (NB-PLCs) can be a valid solution for medium voltage grids. Advantages and drawbacks of this solution are analyzed, starting from some experimental communication results, which were carried out on the medium power system networks of the islands of Ustica and Favignana, in the presence of the net voltage. Furthermore, some communication architectures and hardware prototypes based on NB-PLCs are proposed for different smart grids applications.

Engineeringbusiness.industrypower system measurements communication systems power system communication communication equipment testing narrow band power line communication smart gridsElectrical engineeringcommunication equipment testing communication systems narrow band power line communication power system communication power system measurements smart gridsLine (electrical engineering)Power (physics)Electric power systemSmart gridNarrowbandElectronic engineeringbusinessSettore ING-INF/07 - Misure Elettriche E ElettronichePhase-shift keyingVoltage
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Hybrid passive and communications-based methods for islanding detection in medium and low voltage smart grids

2013

Islanding condition takes place when a distributed generator (DG) continues to power a part of the grid even if power from electric utility is no longer present. Adverse effects of islanding are power quality deterioration, grid-protection interference, equipment damage, and personnel safety hazards. For these reasons, DG systems must detect an islanding condition and immediately disconnect from the grid (anti-islanding protection). This paper proposes an hybrid solution, for both low voltage (LV) and medium voltage (MV) applications, which makes use of passive and communication-based methods for islanding detection. Among the existing communication technologies, the study is focused on pow…

Engineeringdistributed generationbusiness.industryElectrical engineeringGridPower (physics)interface devicesElectric utilitySmart gridIslanding Detection smart grids active distribution networks power system communications power line communication distributed generation interface devicesElectronic engineeringIslandingactive distribution networksbusinessLow voltagepower line communication power system communications smart gridsSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltagePower controlIslanding Detection
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Study and development of innovative measurement methods and systems for anti-islanding protection in smart grids

2014

Islanding Detection smart grids active distribution networks distributed generation power system communications power line communication interface devicesSettore ING-INF/07 - Misure Elettriche E Elettroniche
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