Search results for "Smartgrid"

showing 3 items of 3 documents

Optimal Operating Point Calculation for Medium Voltage Distribution Systems

2007

The paper deals with the calculation of the optimal working point of a distribution system, equipped with several distributed generators, able to operate also autonomously, i.e. disconnected from the main grid. When connected to the main grid, it appears in general convenient to assign the slack bus role to the bus that represents such a connection. The problem becomes more complex when maximum power transfer constraints through the connection must be taken into account. The adequate slack bus treatment is even more important when the optimal operating condition must refer to the condition subsequent to an intentional or unintentional disconnection from the main grid. The paper presents an …

Electric power distributionOperating pointEngineeringPower flow calculationElectric power distributionbusiness.industrySlack bus treatmentDistributed parameter networksLocal area networksLocal area networkControl engineeringGridMulti-objective optimizationChlorine compoundsMulti-objective optimizationSlack busGenetic algorithmDistributed generationepfl-smartgridsMaximum power transfer theoremDistributed generationDistribution of goodsbusinessComputer networks2007 IEEE Lausanne Power Tech
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GPRS Security for Smart Meters

2013

Part 1: Cross-Domain Conference and Workshop on Multidisciplinary Research and Practice for Information Systems (CD-ARES 2013); International audience; Many Smart Grid installations rely on General Packet Radio Service (GPRS) for wireless communication in Advanced Metering Infrastructures (AMI). In this paper we describe security functions available in GPRS, explaining authentication and encryption options, and evaluate how suitable it is for use in a Smart Grid environment. We conclude that suitability of GPRS depends on the chosen authentication and encryption functions, and on selecting a reliable and trustworthy mobile network operator.

GPRSComputer science[SHS.INFO]Humanities and Social Sciences/Library and information sciences02 engineering and technology[INFO] Computer Science [cs]Encryption[SHS.INFO] Humanities and Social Sciences/Library and information sciencesGPRS core networkAMI0202 electrical engineering electronic engineering information engineeringWirelessMetering mode[INFO]Computer Science [cs]General Packet Radio ServiceSmartgridMobile network operatorAuthenticationbusiness.industryComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS020208 electrical & electronic engineering020206 networking & telecommunicationsSmart gridSecuritybusinessSmart MeteringComputer network
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A Comparison between RMS and EMT Grid-Forming Implementations in MATLAB/Simscape for Smart Grids Dynamics

2022

The article presents a comparison between phasor RMS and EMT models for grid-forming converters. The specific aspects related to the implementation in Simscape Electrical of MATLAB/Simulink are discussed for both RMS and EMT time-domains. The comparison between the different implementations is performed with the simulation of two widely studied grid-forming schemes, the virtual synchronous machine and the power-synchronization control. The simulation-based comparison examines transient phenomena with different characteristics and time scales, including frequency transients, phase jumps and short-circuit events. Specific indications regarding limitations and suitability of grid-forming model…

Settore ING-IND/33 - Sistemi Elettrici Per L'Energiafrequency controlgrid-formingpower system dynamicsmicrogrid controlsmartgridsDynamic simulation
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