Abstract
EVs are recognized as distributed loads and power sources with random motion characteristics in the power distribution networks (PDN); therefore, they serve as connecting points for the distribution network and transportation network (PDN-TN), and have significant impact on the stability and reliability of the routine operation of the coupled networks. In order to guarantee the safe operation of PDN-TN, it is necessary to evaluate the reliability of this coupled network. In this paper, the trip chaining theory is applied to describe the travel plan of EVs, and semi-dynamic flow allocation (SDTA) method is adopted to propose a simulation calculation method of energy flow between two networks based on user equalization (UE) criterion. The new reliability evaluation index for energy flow between the coupled networks is further proposed to better evaluate the reliability. Taking into account the daily trip characteristics of EVs, vehicles types, and charging modes, a coupled network reliability evaluation method based on sequential Monte Carlo simulation is put forward. Finally, the practicability of the proposed method is verified by an IEEE-RBTS BUS-6 test system and a 12-node transportation network.
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