Effects of Smart Charging of Multiple Electric Vehicles in Reducing Power Generation Fuel Cost

SUMMARY The high penetration of variable sources of renewable power generation will lead to operational difficulties in supply/demand balancing in the entire power system. The mass deployment of electric vehicles (EVs) and plug-in hybrid vehicles (PHEVs) will also cause significant changes in electricity demand. Therefore, controlling and managing the charging time of EVs/PHEVs are effective approaches that are imperative for improving balancing in power system operation. We assumed travel patterns for EVs in a model of the future Tokyo power system and analyzed the power system loads, including the charging load of the EVs, under several charging control scenarios. We verified that charging time controls are substantially effective for reducing the fuel costs in the power system. Further, we found that load leveling under a multicar charging management scenario gave the best results in terms of the fuel costs in all cases.

[1]  N. C. Kar,et al.  Impact analysis of EV battery charging on the power system distribution transformers , 2012, 2012 IEEE International Electric Vehicle Conference.

[2]  Fumiko Koyanagi,et al.  Charging and Discharging Time control of Electric Vehicles for the Purpose of Load Leveling , 1998 .

[3]  Takashi Ikegami,et al.  Development of the Optimum Operation Scheduling Model of Domestic Electric Appliances for the Supply-Demand Adjustment in a Power System , 2010 .

[4]  Kenji Yamaji,et al.  Algorithm for Bottom Charge based on Load-duration Curve of Plug-in Hybrid Electric Vehicles , 2010 .

[5]  H. Yano,et al.  Balancing power supply-demand by controlled charging of numerous electric vehicles , 2012, 2012 IEEE International Electric Vehicle Conference.

[6]  Fumiko Koyanagi,et al.  Modeling of Electric Vehicle's Demand and Its Impact on the Daily Load , 1997 .

[7]  Yuzuru Ueda,et al.  Power System Augmentation Planning with Large PV Penetration for Japan in 2030 , 2010 .

[8]  Saifur Rahman,et al.  An investigation into the impact of electric vehicle load on the electric utility distribution system , 1993 .

[9]  Yutaka Ota,et al.  SOC Synchronization Control Method of Electric Vehicles Considering Customers' Convenience for Suppression of System Frequency Fluctuation , 2012 .

[10]  Kazuhiko Ogimoto.  Power System in Low-Carbon Society , 2009 .

[11]  Michael Devetsikiotis,et al.  Demand response control for PHEV charging stations by dynamic price adjustments , 2012, 2012 IEEE PES Innovative Smart Grid Technologies (ISGT).

[12]  Canbing Li,et al.  An Optimized EV Charging Model Considering TOU Price and SOC Curve , 2012, IEEE Transactions on Smart Grid.

[13]  Alireza Khaligh,et al.  Impact of plug-in hybrid electric vehicle charging on a distribution network in a Smart Grid environment , 2012, 2012 IEEE PES Innovative Smart Grid Technologies (ISGT).