Research on architecture of ITS based Smart Charging Guide System

Nowadays, environmental-friendly electric vehicles (EVs) attract great attention around the world. However, the adoption of EVs will impact the power system greatly. Different from previous work which concentrated on “when to charge”, research on “where to charge” to minimize the impacts on power grid is presented based on the interaction with Intelligent Transportation System (ITS). With the transportation information from ITS, a Smart Charging Guide System (SCGS) is designed in this paper. Architecture based on interaction between TCC (Traffic Control Center) and PSCC (Power System Control Center) is presented with the following three functions. Firstly, initial routes navigating to destination are selected with necessary charging stations. Secondly, load forecasting is carried out to determine the future power demands on different charging stations. Finally, based on the forecasted load, security evaluation on power system is adopted to produce a security index (SI). The SI will be used to revise the traffic distance to an electrical distance, which involves the contribution to power system operation. Two typical simulation cases are presented to explain the ideas of SCGS and further research prospects are discussed.