Search results for " Islanded microgrids"

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Frequency constrained optimal Power Flow based on Glow-worm Swarm Optimization in Islanded Microgrids

2015

This work presents an application of a swarm optimization method to solve the optimal power flow problem taking into account the constraints of frequency and line ampacity in three-phase islanded Microgrids. Each generation unit is equipped with a Power Electronics Interface. In the considered formulation, the droop control parameters are considered as variables to be adjusted by a higher control level, while the frequency is kept in rated bounds. Another typical constraint for OPF formulation, the max ampacity of each line, is also considered. Two case studies with different dimensions and electrical features have been considered and the obtained results show the efficiency of the proposed…

Mathematical optimizationEngineeringfrequency constraintInterface (computing)Islanded microgridglow-worm swarm optimizationBiomedical EngineeringEnergy Engineering and Power TechnologyControl theoryPower electronicsAmpacityVoltage droopthree phase systemsislanded microgridsbusiness.industryRenewable Energy Sustainability and the Environmentline ampacity constraintOptimal power flow; three phase systems; islanded microgrids; glow-worm swarm optimization; frequency constraint; line ampacity constraintParticle swarm optimizationSwarm behaviourConstraint (information theory)Three phase systemSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaLine (geometry)businessOptimal power flow
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INVERTER-BASED DISTRIBUTED GENERATORS, MODELING AND CONTROL

In the last few years, electrical power generation is moving from a centralized generation towards distributed generation including on-site Renewable Energy Sources (RESs). In order to overcome RES related issues, as intermittent and fluctuating power, storage elements are included in the on-site generation system. The interaction between distributed generator (DG) units including RES, storage and front-end power converters should be carefully modeled in order to analyze the power system stability. An accurate modeling of DGs is required. In this thesis, a new modeling approach has been proposed for the inverter-based DGs based on the concept of electrostatic synchronous machines. Detailed …

Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaKeywords: Distributed Generators Voltage Source Inverters Electrostatic Synchronous Machines Microgrids Islanded microgrids nonlinear droop control minimum losses operation Optimal Power Flow.Distributed Generators Voltage Source Inverters Electrostatic Synchronous Machines Microgrids Islanded microgrids nonlinear droop control minimum losses operation Optimal Power Flow. [Keywords]
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