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Design of an Improved Tie-line Power Model for a PEV Based Interconnected Microgrid Under AGC Operation

Nowadays, microgrid is utilised as a flexible replacement to the conventional power system. Therefore, special attention must be provided for the proper microgrid based power system design. Earlier, various articles presented the interconnected microgrid operation. However, less attention is given towards the proper tie-line modeling considering high resistance-inductive reactance (R/X) ratio in the interconnected microgrid operation. Considering the research gap, towards the proper designing of tie-line modeling, this paper presents an improved power tie-line model in an interconnected microgrid in presence of plug-in electric vehicle. Various case studies are carried out for validating the proper designing technique under various load disturbances in presence of uncertain output power from intermittent power generating units. The functioning of the proposed work is validated, connecting the proposed model in a 12-node distribution network. The proposed model shows its effectiveness and superiority compared to other available designing conditions.