A novel class of auction games is formulated to study coordination problems arising from charging a population of electric vehicles (EVs) over a finite horizon. Different from those analyzed in the above chapters, the charging power of EVs at different time slots could be regarded as multi-type resources, and there exist coupling constraints among these resources, say the total charging power over the whole horizon should not exceed the battery size of EVs in this scenario. To compete for energy allocation over the horizon, each individual EV submits a multidimensional bid, with the dimension equal to two times the number of time-steps in the horizon. The use of the progressive second price (PSP) auction mechanism ensures that incentive compatibility holds for the auction games. Due to the cross elasticity of EVs over the charging horizon, the marginal valuation of an individual EV at a particular time is determined by both the demand at that time and the total demand over the entire horizon. This difficulty is addressed by partitioning the allowable set of bid profiles based on the total desired energy over the entire horizon. It is shown that the efficient bid profile over the charging horizon is a Nash equilibrium of the underlying auction game. An update mechanism for the auction game is designed. A numerical example demonstrates that the auction process converges to an efficient Nash equilibrium. The auction-based charging coordination scheme is adapted to a receding horizon formulation to account for disturbances and forecast uncertainty.
Efficient Charging Coordination for Electric Vehicles Under Auction Games
Efficient Auction Games ; Kapitel : 8 ; 203-249
14.02.2020
47 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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