ANALYSIS AND TEST OF EFFECTIVE SYNCHRONIZATION OF MICROGRID WITH THE UPSTREAM NETWORK ENABLED BY A RECLOSER
Carlos Cândido, Joao Filipe Fernanders, Sa, Joao, Neuza Gomes · CIRED · 2019
Grid reliability, power quality and loss reduction have always been considered hot topics among electrical utilities. More recently, other topics have emerged, like flexibility, resilience, demand-response and self-supply needs.Motivated by the new challenges, EDP Distribuição (EDPD) installed an Energy Storage System (ESS) earlier in 2015. Since then, EDP and its partners established protection schemes to apply on the ESS and studied the ESS operating in islanded and grid connected modes, concluding that the capabilities and potential of the ESS allowed to improve client quality of service.This article aims to describe EDPDs acquired experience on another important topic regarding ESS functionality: voltage and frequency synchronization to promote enabling and disabling the microgrid without compromising quality of service.