Enhancement of self-healing property of smart grid in islanding mode using electric vehicles and direct load control

Power system reliability enhancement is one of the main goals pursued by making the systems smart. Self-healing, which includes fault detection, fault isolation, reconfiguration and service restoration, is the most notable feature of the smart grids in this regards. Increased penetration of distributed generation sources in power grids has even more facilitated the service restoration process. Onn the other hand, the significant progress in the technologies used in battery manufacturing has economically justified the utilization of electric vehicles in the improvement of system reliability. Nevertheless, in order to optimally make use of plug-in hybrid electric vehicles, their owner behavior should be properly modelled in the first place. In this paper stochastic nature of electric vehicle's behavior is modelled and the parking lots needed for self-healing in the islanding situation are optimally placed in the power grid. The proposed method is experimented on a 35-bus system. The results of simulation reveal that optimal usage of electric vehicles has notable effect on the improvement of system self-healing in islanding mode which consecutively results in the enhancement of power system reliability.

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