Search results for "Grid"

showing 10 items of 792 documents

Experimental evaluation of an hybrid communication system architecture for smart grid applications

2015

In this paper a new communication system architecture is proposed for the development of a SCADA system which can remotely monitor and control intelligent electronic devices (IEDs) connected to the low voltage distribution networks, i.e low voltage smart meter (SM), interface protection devises (IPS). New distributed metering systems and interface devices, together with a proper communication infrastructure (HiperLAN and narrowband power line communication (NB-PLC) on low voltage network), have been developed to allow monitoring the whole power system and controlling the distributed generators of a Smart Grid also in the presence of harmonic distortions. In this way, the electrical energy d…

EngineeringSmart meterbusiness.industryInterface (computing)Electrical engineeringsmart grids power system communications power line communication smart meter distributed generation interface protection systemsCommunications systemElectric power systemPower-line communicationSmart gridSCADAElectronic engineeringbusinessLow voltageSettore ING-INF/07 - Misure Elettriche E Elettroniche
researchProduct

NB PLC and Software Defined Networking for Smart Grid Applications

2017

During the last years, the installation of Distributed Energy Resources (DERs) and the expected diffusion of Electrical Vehicles (EVs), is increasing the complexity of the distribution grid, making the management of the grid operated by Distribution System Operators (DSOs) more difficult. The Smart Grid approach tries to provide a response to these troubles, by means of a strong interaction between the power grid and Information and Communication Technology (ICT) infrastructures. The drawback of this approach is an increase in the management effort of the ICT infrastructures, for which the DSO are not prepared. Software Defined Networking (SDN) is an approach developed to manage complex ICT…

EngineeringSoftware Defined Networking020209 energyDistribution Grid AutomationEnergy Engineering and Power TechnologyNarrow-Band Power02 engineering and technologyNarrow-Band Power Line Communication0202 electrical engineering electronic engineering information engineeringPerformance CharacterizationSmart GridProtocol (object-oriented programming)ModbusInstrumentationbusiness.industryLine Communication020208 electrical & electronic engineeringGridPower-line communicationSmart gridTransmission (telecommunications)Embedded systemDistributed generationbusinessSoftware-defined networkingSettore ING-INF/07 - Misure Elettriche E ElettronicheComputer network
researchProduct

Techno-economic optimum sizing of hybrid renewable energy system

2013

Using off grid hybrid renewable energy systems for rural electrification has become an attractive solution for those areas, where grid electricity is not feasible or cost of the grid extension is relatively large. Hybrid system combines several energy systems together, therefore it can supply high reliable electricity rather than a PV/battery system or a wind/battery system. But the most important thing is that the system should be economically attractive. To achieve both of these features, each of the components in the hybrid system should be optimally sized. This requires a detailed techno-economic analysis of different possible hybrid system configurations. The objective of this study is…

EngineeringStand-alone power systemWind powerbusiness.industryDistributed generationIntermittent energy sourceElectrical engineeringGrid-connected photovoltaic power systemGrid energy storagebusinessCost of electricity by sourceGrid parityAutomotive engineeringIECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society
researchProduct

Task scheduling control of BGA solder joint process in flexible manufacturing system

2006

This paper describes an open loop control method of the solder joint process in a rework station for faulty printed circuit board (PCBs) containing electronic components in packages ball grid arrays (BGAs). In particular, a mathematical model describing the solder joint process is, first of all, obtained. Then, the desired thermal profile of the junctions BGA-PCB is determined according to the physical constraints of the rework station framework. The control parameters corresponding to the above desired thermal profile are identified using the above mathematical model. Finally, the open loop control algorithm is implemented on the supervisor interface of the rework station in order to carri…

EngineeringSupervisorbusiness.industryReworkFlexible manufacturing systemMechanical engineeringBall Grid Arrays (BGA)GridControl parameterOpen loop control algorithmsPrinted circuit boardSettore ING-INF/04 - AutomaticaEmbedded systemBall grid arrayvisual_artSolderingElectronic componentvisual_art.visual_art_mediumbusiness
researchProduct

Design issues for wind farms grid tied Inverter

2017

In this paper the Authors give indications for the design of a grid tied Voltage Source Inverters (VSI) aimed to optimal use in energy conversion from wind source. In particular, the design of the inverter is more focused on the control system planning, with a particular glance on the grid synchronization problem. After the exposition of general issues concerning renewable energies and associated topics, the case of a grid tied inverter is considered and a methodology of design is sketched starting from the consideration of the DC side and also considering the power device losses, the protection issue against over voltages and over-currents, snubber circuits, heat sinks and, finally the con…

EngineeringSustainability and the Environmentbusiness.industry020209 energy020208 electrical & electronic engineeringElectrical engineering02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciGridwind farms inverter design control systemPower (physics)Renewable energyRenewable Energy Sustainability and the Environment; Automotive Engineering; Electrical and Electronic EngineeringSettore ING-IND/33 - Sistemi Elettrici per L'EnergiaControl systemAutomotive Engineering0202 electrical engineering electronic engineering information engineeringElectronic engineeringSnubberEnergy transformationInverterRenewable EnergyVoltage sourceElectrical and Electronic Engineeringbusiness2017 Twelfth International Conference on Ecological Vehicles and Renewable Energies (EVER)
researchProduct

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
researchProduct

Comparison of power quality impact of different photovoltaic inverters- the viewpoint of the grid

2005

This paper presents the results of an experimental analysis performed with the aim of evaluating the effect of many photovoltaic plants on power quality of the grid. Several parameters as voltage and current distortion, flicker, voltage variations at fundamental frequency and power factor have been observed. The measured values have been compared with the limits reported in the standards and, when possibiIe, their dependence on the characteristics of the grid in terms of its impedance has been pointed out.

EngineeringSwitched-mode power supplybusiness.industryElectrical engineeringPower factorVoltage optimisationpower qualify distributed generation photovoltaic plantMaximum power point trackingSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaElectric power systemStand-alone power systemGrid-connected photovoltaic power systemElectronic engineeringbusinessNominal power (photovoltaic)2004 IEEE International Conference on Industrial Technology, 2004. IEEE ICIT '04.
researchProduct

A parametric study on unbalanced three phase islanded microgrids with inverter interfaced units

2013

In this paper, the solution of the power flow for unbalanced three phase microgrids systems is proposed. The study aims at the integration of inverter interfaced units using the control law used for primary voltage and frequency regulation, so as to take into account possible small variations of these parameters to account for sudden load changes. The proposed study deals with unbalanced systems which is the typical case of small distribution systems and shows how the power losses term varies as the regulators parameters vary as well, thus showing that these are sensitive parameters that could have an important role in optimal management of such systems.

EngineeringThree phaseIslanded power flowbusiness.industryUnbalanced systemsAutomatic frequency controlControl engineeringunbalanced systemsPower factorPower (physics)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiamicrogridThree-phaseControl theoryInverterthree phaseMicrogridsbusinessParametric statisticsVoltagePower control
researchProduct

Guidelines for the design and implementation of the ARPCC control applied to grid-connected converters

2013

Abstract This paper presents implementation details of the adaptive robust predictive current control (ARPCC) applied to a grid-connected converter, such as feed-forward cancellation protocol, the selection of the observer gain and adaptive parameters or the sampling options, needed to get the best performance of this control. The feed-forward term cancellation permits to achieve a very low harmonic distortion in current waveforms when the voltage sensing circuits are well calibrated. A detailed gain adjustment protocol of the voltage sensing circuits is presented in this paper. Moreover, a control design procedure based on the observer gain L o boundaries and the adaptive parameters has be…

EngineeringTotal harmonic distortionObserver (quantum physics)business.industryEnergy Engineering and Power TechnologyConvertersGridSampling (signal processing)Control theoryElectronic engineeringElectrical and Electronic EngineeringbusinessProtocol (object-oriented programming)Digital signal processingElectronic circuitElectric Power Systems Research
researchProduct

Influence of raw data analysis for the use of neural networks for win farms productivity prediction

2011

In the last decade wind energy had a strong growth because of cost effectiveness of the technology and the high remunerative of investments.

EngineeringWind powerArtificial neural networkCost effectivenessbusiness.industryEnvironmental economicsMachine learningcomputer.software_genreStatistical analysisPower gridData pre-processingArtificial intelligencebusinessRaw datacomputerProductivity2011 International Conference on Clean Electrical Power (ICCEP)
researchProduct