A novel evaluation method of electric vehicles charging network based on stochastic geometry

Abstract

The randomness, mobility and dispersion of electric vehicles (EVs) charging bring great challenges to the planning of charging network. For EV users with range anxiety, the existing charging network has the disadvantages of low coverage, high damage rate and irrational configuration. In this paper, an evaluation method of EV charging network based on stochastic geometry is introduced with taking the charging demand of EV users and vehicular networking communication into consideration. Firstly, a heterogeneous charging network consists of different types of charging facilities is constructed based on Voronoi diagram. Then the SINR model is utilized to analyze theoretically the system-level performance of charging network. We derive the closed-form expression of coverage probability based on mathematical tools of stochastic geometry. The numerical experiments are performed, and simulation results show the rationality of the proposed method.