Revista Eletrônica de Potência (Brazilian Journal of Power Electronics)

Resumo

Baseado em uma arquitetura centralizada e despachável, este trabalho demonstra que é possível operar uma microrrede sob condições de ilhamento ou interconexão, de forma resiliente e confiável, sem que seja necessário conhecimento prévio de características da rede ou técnicas de sincronização. A implementação da microrrede baseia-se em uma metodologia de controle ordenador/subordinado (mestre/escravo), na qual a coordenação de agentes (i.e., geradores distribuídos) é determinada pelo algoritmo power-based control, apenas requerendo um canal de comunicação de baixa taxa de transmissão. Por meio de um protótipo experimental, comprova-se a viabilidade da proposta na operação do sistema, com uniforme contribuição de potência entre seus agentes distribuídos, durante interconexão, ilhamento intencional,
ilhamento não intencional, falha de comunicação e transições entre modos de operação.

Title: Experimental validation of a fully-dispatchable microgrid with central controller

Abstract

Based on a fully-dispatchable microgrid architecture, this work aims at showing the possibility of operation during islanded and grid-tied condition in a controlled and reliable manner, without previous knowledge of either grid parameters or synchronization techniques. This microgrid implementation is achieved by a master/slave centralized control methodology, in which distributed agents are coordinated by means of the power-based control algorithm, only requiring a narrowband communication link. By means of a laboratory-scale microgrid prototype, validations are carried out presenting the operating behavior of the system under maximum and uniform contribution of its distributed agents. Operation in islanded and grid-tied modes, as well as under intentional and non-intentional islanding cases, and communication failure are shown.

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