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Connection and disconnection transients for micro-grids under unbalance load condition
Rocabert Delgado, Joan; Azevedo, Gustavo M.S.; Candela García, José Ignacio; Blaabjerg, Frede; Rodríguez Cortés, Pedro
Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica
The recent grid integration of Distributed Energy Resources (DER) possibility the formation ofintentional islands in the case of a grid fault conditions. For such island formation is required an activeagent capable of governing the micro-grid connection state in a safe mode, especially in connectionand disconnection transients. This paper focuses on the design of a method oriented to carry out astable intentional disconnection, and later re-connection, of local grids from the main distribution gridin an intentional way; also under unbalance load condition. Seamless transfer between grid-connectedand isolated mode has been achieved in an alpha-beta stationary reference frame with a frequencybased synchronization control loop. Simulation and experimental results are provided to verify theproper performance of the proposed solution.
Àrees temàtiques de la UPC::Enginyeria electrònica i telecomunicacions::Electrònica de potència::Circuits de potència
Àrees temàtiques de la UPC::Energies::Energia elèctrica::Automatització i control de l'energia elèctrica
Distributed generation of electric power
Energia elèctrica -- Distribució
Restricted access - publisher's policy
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