Search results for "Power System"

showing 10 items of 322 documents

A simple and accurate model of photovoltaic modules for power system design

2014

EngineeringSIMPLE (military communications protocol)business.industryPhotovoltaic systemphotovoltaic arraysolar energyElectrical engineeringSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciPower system designMaximum power point trackingSolar micro-invertermodeling and simulationElectronic engineeringGrid-connected photovoltaic power systemrenewable energy sourcebusinessRooftop photovoltaic power station2014 Ninth International Conference on Ecological Vehicles and Renewable Energies (EVER)
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An optimized diagnostic architecture for real-time monitoring of MV networks

2006

Due to the electrical energy market liberalization, the Authority for electrical energy and gas (AEEG) in Italy and the other regulatory organizations in other European countries have concentrated their attention on the quality of the electrical service. One of the aspect of major importance in the definition of the quality of a public service is its continuity. In the aim of regulating this field the Authority has defined some continuity indicators, for example the number of interruptions per year and the cumulate duration of the interruptions per year. Recent statistics on these indicator show that the 80% of the number of interruptions in one year is caused by MV network. For this reason…

EngineeringService (systems architecture)business.industrymedia_common.quotation_subjectFault (power engineering)Reliability engineeringElectric power systemIdentification (information)Management systemElectronic engineeringQuality (business)Duration (project management)businessInefficiencymedia_common
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Review of the energy and economic parameters involved in the effectiveness of grid-connected PV systems installed in multi-storey buildings

2014

Abstract The assessment of PV energy in an urban context is extremely complex because many factors have to be considered. Moreover, when the purpose is calculating the realistic amount of the electricity demand of a city that can be covered by the photovoltaic generation, it is necessary to estimate the number of photovoltaic systems whose installation is economically advantageous. Such a topic requires an economic analysis, which is affected by the number of energy and economic parameters involved and the values assigned to them to perform calculations. Some parameters are perfectly known and unvarying, like the paid incentives. Adversely, some parameters, like the efficiency degradation o…

EngineeringSettore ING-IND/11 - Fisica Tecnica Ambientalebusiness.industryMechanical EngineeringPhotovoltaic systemBuilding and ConstructionManagement Monitoring Policy and LawGridCivil engineeringEnergy policyReliability engineeringEconomic parametersGeneral EnergyIncentiveGrid-connected photovoltaic power systemEconomic analysisProfitability indexbusinessPhotovoltaic Grid-connected PV systems Energy parameters Economic parameters
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Review on photovoltaic based active generator

2015

An active generator has the capacity to support frequency control and instantaneous power balance. The grid operator adjusts the power dispatch of generators according to power demand fluctuations. Photovoltaic (PV) based active generators can be used as load following generators in the same manner as other power dispatch generators. This new type of distribution system, based on active generator(s), needs new innovative management and operation strategies for increasing the penetration of intermittent renewable energy systems. The considered PV based active generator has three units, i.e., PV array, battery storage and super capacitor. In this review paper, the management and operation app…

EngineeringSmart gridbusiness.industryAutomatic frequency controlPhotovoltaic systemLoad following power plantElectronic engineeringGrid-connected photovoltaic power systemMicrogridbusinessRooftop photovoltaic power stationAutomotive engineeringMaximum power point tracking2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)
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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
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Modeling the Sequential Switching Shunt Series Regulator

2005

This letter characterizes, in terms of the bandwidth and limit cycle frequency of its constituent subsystems, the sequential switching shunt series regulator -S/sup 4/R, a high-efficiency, low-mass and volume power cell devised to power the next generation of regulated power buses in telecommunication spacecrafts. Transconductance power source modeling is used to obtain linear and nonlinear models. These are used to establish a design control strategy which involves the dynamic response in large load requirements or at the end of the satellite life. Simulations and experimental results are also given to demonstrate the validity of the model.

EngineeringSpacecraftbusiness.industryTransconductanceBandwidth (signal processing)RegulatorEnergy Engineering and Power TechnologyNonlinear systemPower system simulationControl theoryLimit cycleElectrical and Electronic EngineeringbusinessShunt (electrical)IEEE Power Electronics Letters
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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
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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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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.
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Controlled Fault-Tolerant Power Converters for Power Quality Enhancement

2013

Power quality depends generally on the interaction of electrical power with electrical equipments. If electrical equipments operate correctly and reliably without being damaged or stressed, a suitable level of power quality is assured. On the other hand, if the electrical equipment malfunctions, is unreliable, or is damaged during normal usage, power quality is poor and probably the economical loss could be important like the technical one. In the scenario of the Distributed Generation, power quality issues will be moreover important because an higher dissemination of power conditioning equipment will be requested and this obviously increases the sources of vulnerability of the electrical s…

EngineeringSwitched-mode power supplypower supply qualitypower system controlSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciPower budgetpower quality enhancementTopologyMaximum power point trackingfault tolerant power converterfuel cellpower supplieElectric power systemMathematical modelpower convertorElectronic engineeringcontrolled fault-tolerant power converterPower-flow studyCircuit faulthybrid power systemdistributed generationFault tolerant systembusiness.industryFault toleranceReliability engineeringPower ratingBase load power plantPower qualityModeling and Simulationpower conditioning equipmentElectric powerVectorbusinessfault tolerance;power convertors;power supply quality;controlled fault-tolerant power converters;distributed generation;fault tolerant power converters;power conditioning equipment;power quality enhancement;Circuit faults;Fault tolerance;Fault tolerant systems;Mathematical model;Power quality;Topology;Vectors;fuel cells;hybrid power systems;power supplies;power system control
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