Search results for "smart grids."

showing 10 items of 56 documents

Smart interface devices for distributed generation in smart grids: The case of islanding

2017

With the increasing presence of distributed generators (DGs), the implementation of a smart sensors and actuators network in distribution grids has become crucial for different monitoring, management and protection functionalities. For DGs monitoring and control, sensors and actuators are usually embedded in so-called interface devices (IDs) or interface protection systems (IPSs). Existing IDs lack in communication interfaces both to the electrical energy Distribution System Operators (DSOs) and to the DGs inverter. In this framework, the authors have developed a new ID solution and a proper communication architecture, which allow implementing new smart functionalities based on the interact…

Engineering020209 energyInterface (computing)02 engineering and technologyIslanding detectionPower system communicationslaw.inventionpower system communicationIntelligent sensorlawinterface device0202 electrical engineering electronic engineering information engineeringIslandingElectrical and Electronic Engineeringsmart gridInstrumentationbusiness.industry020208 electrical & electronic engineeringSmart gridsInterface devicesPower (physics)Distribution networkSmart gridEmbedded systemDistributed generationPower system measurementInverterDistributed generationbusinessSettore ING-INF/07 - Misure Elettriche E ElettronicheRemote control
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An Innovative Coupling Solution for Power Line Communication in MV Electrical Networks

2019

One of the main problems in the diffusion of power line communication (PLC) in medium voltage (MV) networks is the need of a dedicated PLC coupler to be installed all over the network. To avoid this problem, the authors have studied, prototyped and patented an innovative PLC coupling solution which uses electrical elements embedded in most of the switchgears already installed in MV networks, i.e. the capacitive dividers of the voltage detecting systems (VDS). The new solution prototype is described in this paper, highlighting the advantages in terms of a significant reduction of both direct costs of equipment and infrastructures and indirect costs of installation and service interruption. T…

power line communicationCouplingpower system measurementbusiness.industryOrthogonal frequency-division multiplexingComputer science020209 energyCapacitive sensing020208 electrical & electronic engineeringPower system communicationElectrical engineeringElectrical element02 engineering and technologypower system measurementsMultiplexingSwitchgearPower-line communicationTransmission (telecommunications)smart grids0202 electrical engineering electronic engineering information engineeringbusinessSettore ING-INF/07 - Misure Elettriche E Elettronichecommunication equipment testing2019 1st Global Power, Energy and Communication Conference (GPECOM)
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Comunicazione power line in reti di media e bassa tensione: modellizazione e verifiche sperimentali

2012

Line Communication (PLC) smart grids reti attive
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Experimental investigation on PLC signal crossing of power transformers

2014

In this work the use of PLC in MV-LV networks is investigated, by means of experimental tests in the case of a two-ways MV/LV communication between two secondary substations. The two substations are connected by a MV overhead power line. Moreover each substation has a by-pass connection at MV bus-bars and a MV/LV power transformer. A ST7580 transceiver is used to inject the communication signal. The transceiver is embedded in a new interface device developed by the authors. In the paper the communication issues are introduced and some experimental tests are presented and discussed. Such tests have been carried out in the presence of voltage net, i.e. 24 kV, with the aim to verify the possib…

EngineeringElectric power distributionbusiness.industrycommunication systems power system communication power transformers communication equipment testing narrow band power line communication attenuation smart gridsOverhead power lineElectrical engineeringcommunication systemsnarrow band power line communicationSignalCurrent transformerpower transformerspower system communicationElectric power transmissionsmart gridsElectronic engineeringPower engineeringTransceiverbusinessSettore ING-INF/07 - Misure Elettriche E Elettronicheattenuationcommunication equipment testingVoltage
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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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ANALYSIS OF IMPACTS ON ELECTRIC POWER SYSTEM OPERATION OF LOAD MANAGEMENT IN RESIDENTIAL AND TERTIARY BUILDINGS

2012

Load management includes all the techniques, logics, actions and programs through which the electric utilities and the customers are able to manage loads absorption in a more prudent and efficient way; it determines economic benefits for the users, but also allows a network management and operation simpler and cheaper, determining technical and economic benefits. The present paper constitutes a detailed study of interventions and techniques to control demand in the residential and tertiary sectors and the effects that these actions have on the entire electrical system and its management. It discusses the implications of such control actions in terms of reduction of network losses and relate…

Building management systembusiness.industryLoad balancing (electrical power)Renewable energySettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaLoad managementNetwork managementElectric power systemSmart gridRisk analysis (engineering)Load management renewable sources distribution systems smart grids.Operations managementDeferralbusiness
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Smart renewable generation for an islanded system. Technical and economic issues of future scenarios

2012

The subject addressed in this paper is the analytical study of the transition of an energy generation system for a real MV/LV distribution system from one that is “fuel-based” to a distributed and smart “renewables-based” system. The paper outlines both the technical and the economic issues related to such a transition from one type of system to the other. The study is carried out for a real islanded network located in the Island of Pantelleria (Mediterranean Sea). The results obtained are presented and discussed, putting into evidence the technical, environmental and economic benefits of using smart technologies and renewable energy sources.

Engineeringbusiness.industryMechanical EngineeringEnvironmental resource managementBuilding and ConstructionEnvironmental economicsSmart grids Distributed generation Renewable energy Energy scenarios Distribution systemsPollutionEconomic benefitsIndustrial and Manufacturing EngineeringRenewable energySettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaDistribution systemGeneral EnergyElectricity generationSmart gridDistributed generationRenewable generationElectrical and Electronic EngineeringbusinessSettore ING-INF/07 - Misure Elettriche E ElettronicheCivil and Structural EngineeringEnergy
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Sistemi di comunicazione e dispositivi di interfaccia per l'integrazione della generazione distribuita nelle smart grids

2014

L'integrazione della generazione distribuita (GD) nelle reti elettriche di distribuzione a media e bassa tensione  uno degli elementi chiave per il pieno sfruttamento delle fonti energetiche rinnovabili (FER). Ci˜ implica un ripensamento della gestione e del controllo delle reti elettriche , che devono passare da sistemi " passivi ", con flussi di potenza unidirezionali e un numero limitato di funzioni di monitoraggio e automazione, a reti attive e intelligenti (Òsmart gridsÒ). In tali sistemi, i flussi di potenza possono essere bi-direzionali e, se non correttamente gestiti, possono causare situazioni critiche, quali ad es. problemi di stabilitˆ e di controllo della rete o funzionamento i…

smart grids distributed generation power line communications interface devicesSettore ING-INF/07 - Misure Elettriche E Elettroniche
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An Improved Load Flow Method for MV Networks Based on LV Load Measurements and Estimations

2019

A novel measurement approach for power-flow analysis in medium-voltage (MV) networks, based on load power measurements at low-voltage level in each secondary substation (SS) and only one voltage measurement at the MV level at primary substation busbars, was proposed by the authors in previous works. In this paper, the method is improved to cover the case of temporary unavailability of load power measurements in some SSs. In particular, a new load power estimation method based on artificial neural networks (ANNs) is proposed. The method uses historical data to train the ANNs and the real-time available measurements to obtain the load estimations. The load-flow algorithm is applied with the e…

Artificial neural networksBusbarComputer sciencepower system measurement020208 electrical & electronic engineeringArtificial neural networks (ANNs)power system managementpower measurementFlow method02 engineering and technologypower system measurementsload flow (LF)Power (physics)Control theoryload flowsmart grids0202 electrical engineering electronic engineering information engineeringstate estimationElectrical and Electronic Engineeringsmart gridInstrumentationSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltage
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An interface protection system with power line communication for distributed generators remote control

2014

The aim of this work is to present a narrow band power line communication (NB-PLC) interface protection system (IPS) for distributed generators (DGs); it has been developed according to the current standard CEI 0-21 and the requirements for smart grid applications. For such applications, the new IPSs have to implement new intelligent functions such as remote monitoring and control of DGs and Energy Storage Systems (ESSs) inverters, not only in terms of disconnection but also of voltage regulation and power modulation by the utility control. The main feature of the developed IPS is the ability to interact with both the grid and the DG's and ESS's inverters. In fact, it can communicate with t…

power line communicationEngineeringdistributed generationbusiness.industryinterface protection systemsRemote monitoring and controlpower system communicationsPower-line communicationSmart gridDistributed generationsmart gridsdistributed generation interface protection systems smart grids power system communications power line communication islanding detectionGrid-connected photovoltaic power systemElectronic engineeringislanding detectionVoltage regulationbusinessSettore ING-INF/07 - Misure Elettriche E ElettronicheModbusPower control2014 IEEE International Workshop on Applied Measurements for Power Systems Proceedings (AMPS)
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