Abstract
In isolated microgrids (MGs), including plug-in hybrid electric vehicles (PHEVs) and renewable energy resources (RERs) sizing of battery energy storage systems (BESSs) is critical since MGs do not have the support of upstream utility grid in isolated mode. Hence, this paper suggests a sizing scheme for BESSs in an isolated MG, including PHEVs and RERs. The aim of the proposed scheme is continuously feeding all the load of the MG without any load shedding. In this paper, the load profile of the MG and output power of distributed generation (DG) units are calculated for four different seasons, and then, maximum rated power of the BESS is determined based on the load profile as well as the output power of DGs. To verify the effectiveness of the proposed scheme in sizing a BESS in an isolated MG in the presence of PHEVs and RERs with intermittent output power, we implemented it on the modified version of IEEE 33-bus test system which is being operated in isolated mode.
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