Comprehensive Benefit Analysis of Coordinated Charging Management of Electric Vehicles

doi:10.3969/j.issn.1000-7229.2015.07.028

Abstract

Abstract:

Implementing coordinated charging management for electric vehicles （EVs） could optimize the load profile， and hence improve the security and economics of the power system concerned. Thus， how to develop a coordinated EV charging strategy and how to evaluate the effect of implementing such a strategy are important issues to be addressed. Given this background， a coordinated EV charging optimization model is firstly proposed with an objective of minimizing the system load variance for a given time period， and a highly efficient commercial solver， named AMPL/CPLEX， is employed to solve the optimization model， and the system load profile is finally attained. Subsequently， methods are developed for evaluating the potential economic benefits of coordinated EV charging management from four aspects， including no extra generation and transmission investment， reduced cost of distribution system capacity reinforcement， reduced cost of energy losses， reduced cost of purchasing ancillary services， with the free charging scenario as the datum. Then a method for comprehensive benefit analysis of coordinated EV charging management is presented. Finally， a 54-bus sample distribution system is employed to demonstrate the proposed method， and it is shown by simulation results that remarkable economic benefits can be achieved by implementing coordinated EV charging management.

Key words: electric vehicles （EVs）, coordinated charging management, generation and transmission investment, distribution system capacity reinforcement, energy losses, ancillary service

CLC Number:

TM 92

WANG Xiaolei， YAO Weifeng， WEN Fushuan， ZENG Pingliang， ZHANG Xizhu， WANG Lei. Comprehensive Benefit Analysis of Coordinated Charging Management of Electric Vehicles[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(7): 194-201.

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