Search results for "Distributed generation"

showing 10 items of 129 documents

Financial measures for supporting wind power systems in Europe: A comparison between green tags and feed’in tariffs

2008

Distributed Generation demonstrates to be able to significantly influence the electric power system, bringing considerable benefits to the quality of service and improving the energetic efficiency of the distribution network. In particular, in the last few years, Distributed Generation from renewable energy sources is considerably increased thanks to the many support policies promoted worldwide with the aim of facing the environmental issue and the problem of the permanent rise of prices of the fossil energy. In this contest, after a brief review on the financing strategies carried out in Europe in the last decade for promoting the recourse to renewable energy, the paper presents a comparis…

FinanceEnvironmental issueElectric power systemWind powerbusiness.industryDistributed generationFossil fuelBusinessElectricityFeed-in tariffRenewable energy2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion
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DEMAND Project: An algorithm for the assessment of the prosumers’ flexibility

2020

Demand side aggregation represents an important opportunity for ancillary services provision due to the potential that the coordinated management of distributed resources has on affecting power systems' operation. In this framework, the Aggregator has a main role and takes on different relationships with the other actors of the power system, usually becoming a mediator between the prosumers and the distribution system operator. The DEMAND project introduces a new point of view in demand side aggregation by proposing a new framework where the Aggregator is no more needed and prosumers can share and combine their flexibility in a new aggregation platform called Virtual Aggregation Environment…

Flexibility (engineering)Computer sciencebusiness.industry020208 electrical & electronic engineeringDistributed Generation020206 networking & telecommunications02 engineering and technologyTop-down and bottom-up designDemand Responsecomputer.software_genreNews aggregatorSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaDemand responseAggregationElectric power systemDistributed generation0202 electrical engineering electronic engineering information engineeringRemunerationBottom-UpDistribution GridsbusinessProsumerAlgorithmcomputerProsumer2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)
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DEMAND Project: Bottom-Up Aggregation of Prosumers in Distribution Networks

2018

The paper explains the concept of the DEMAND project, whose aim is to develop a technical framework for allowing a Bottom-Up aggregation of prosumers connected to the distribution grid. Load and generation aggregation is a very current issue given the great potential that the coordinated management of distributed resources has on power systems operation and design. The novelty in DEMAND is the absence of a physical aggregator and the recourse to a virtual aggregation environment (VAE) for allowing the exchange of information among the prosumers in order to provide a service to the DSO. After a general description of the research project, the paper presents the services that the aggregated c…

Flexibility (engineering)Service (systems architecture)Control and OptimizationEnergy managementComputer science020209 energyDistributed computingEnergy Engineering and Power TechnologyDistributed GenerationDistribution Grid02 engineering and technologyBiddingDemand Responsecomputer.software_genreGridNews aggregatorSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaElectric power systemAggregationComputer Networks and Communication0202 electrical engineering electronic engineering information engineeringBottom-UpcomputerProsumerProsumer
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Effects of post-filtering in grid-synchronization algorithms under grid faults

2018

Abstract The spread of distributed generation systems has reinforced concerns and requirements on grid-tied power converters. The synchronization with the utility voltage vector is a major concern. In the literature, algorithms based on Phase Locked Loops are extensively presented. In spite of adequate performances under ideal and balanced grid conditions, under grid faults great inaccuracies arise. Shortcomings are overcome by advanced algorithms at the expenses of the complexity and computational cost. In this paper, grid synchronization algorithms are addressed. A solution is proposed by introducing a new post-filter stage in a Decoupled Double Synchronous Reference Frame not affecting, …

Ideal (set theory)PLLbusiness.industryComputer science020209 energy020208 electrical & electronic engineeringEnergy Engineering and Power Technology02 engineering and technologySmart gridConvertersGrid synchronizationPower converterSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciGridPower (physics)Phase-locked loopDistributed generationSynchronization (computer science)0202 electrical engineering electronic engineering information engineeringElectrical and Electronic EngineeringbusinessAlgorithmReference frame
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Integration Issues of Distributed Generators Considering Faults in Electrical Distribution Networks

2014

In the recent years there is a great interest in integration of distributed generation (DG) units at distribution level; this integration leads to planning as well as operational challenges. Some possibilities to handle grid planning issues are addressed in this paper. Effects on grid protection, fault current level, and voltage profile are investigated and described for different types of DG units; the classification of DG units is based on their terminal characteristics in terms of real and reactive power delivering capability. Different scenarios for mis-coordination problems caused by DG interconnection are discussed. The effect of the DG on the voltage profile of a distribution network…

InterconnectionEngineeringDistribution networksbusiness.industryDistributed computingDistributed Generation Protection Coordination Distribution Systems Voltage ProfileControl engineeringAC powerGridSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaDistributed generationMATLABbusinessPower-system protectioncomputercomputer.programming_languageVoltage
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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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Un metodo ibrido per il riconoscimento dell'islanding in reti di media e bassa tensione in presenza di generazione distribuita

2013

Islanding Detection smart grids active distribution networks power system communications power line communication distributed generation interface devicesSettore ING-INF/07 - Misure Elettriche E Elettroniche
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A Simplified Analytical Approach for Optimal Planning of Distributed Generation in Electrical Distribution Networks

2019

DG-integrated distribution system planning is an imperative issue since the installing of distributed generations (DGs) has many effects on the network operation characteristics, which might cause significant impacts on the system performance. One of the most important characteristics that mostly varies because of the installation of DG units is the power losses. The parameters affecting the value of the power losses are number, location, capacity, and power factor of the DG units. In this paper, a new analytical approach is proposed for optimally installing DGs to minimize power loss in distribution networks. Different parameters of DG are considered and evaluated in order to achieve a hig…

Mathematical optimizationComputer science020209 energydistribution systems02 engineering and technologyPower factorReduction (complexity)Softwareoptimum DG capacity0202 electrical engineering electronic engineering information engineeringGeneral Materials ScienceMATLABInstrumentationSIMPLE algorithmcomputer.programming_languageFluid Flow and Transfer Processesdistributed generationbusiness.industryProcess Chemistry and Technology020208 electrical & electronic engineeringGeneral EngineeringProcess (computing)Computer Science ApplicationsPower (physics)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaDistribution systemDistributed generationoptimum DG locationbusinesscomputerApplied Sciences
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Optimal Set Points Regulation of Distributed Generation Units in Micro-grids under Islanded Operation

2010

The present work studies the problem of optimizing the power production levels of dispersed generation units in islanded microgrids. The problem is intrinsically multi-objective with non linear objectives and constraints, thus the solution approach is based on evolutionary optimization and uses the Non dominated Sorting Genetic Algorithm II. The objectives are calculated based on the solution of the load flow problem. The latter problem is more complicated when in the considered system a physical node with a sufficiently large production capability is not available, because all the generation node of the systems have similar and limited generation capability. In this paper, the issue has be…

Mathematical optimizationEngineeringbusiness.industryNode (networking)String (computer science)SortingMulti-objective optimizationSlack busSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaDistributed generationGenetic algorithmMinificationbusinessOptimal dispatch microgrids multi-objective optimization slack bus
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Optimal Sizing and Siting of Distributed Energy Resources Considering Public and Private Incentive Policies

2008

The present work presents the formulation and solution approach for the problem of optimal sizing and siting of distributed energy resources based on Photovoltaic, PV, technology. The considered system is an isolated grid (small island) and the parts involved are the utility and the customers. As it happens in islands, the same utility generates and delivers energy to customers, for this reason, the installation of dispersed generation units is beneficial for reducing power losses, regularizing the voltage profile, but also for increasing the profit. The problem is solved by means of the Non dominated sorting Genetic Algorithm II, NSGA-II, identifying the optimal size and location of PV sys…

Mathematical optimizationIncentiveOperations researchbusiness.industryComputer scienceDistributed generationPhotovoltaic systembusinessGridMulti-objective optimizationSizingExternalityProfit (economics)
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