Price Guide of Electric Vehicles Charging Based on Cost Function

doi:10.3969/j.issn.1000－7229.2016.09.004

Abstract

Abstract: The charging of large number of electric vehicles （EV） will affect the secure operation of power grid. In order to reduce the impact of charging load on the grid, the charging price can be adjusted to guide the charging behavior of EV owners. This paper derives the formulas of self-elastic coefficient and cross-elastic coefficient based on the cost function. And this paper establishes two time-of-use （TOU） price plans and a TOU price model for guiding EV charging with considering the motivation level of owners and the load fluctuation in power grid. Finally, this paper compares the optimal TOU prices between these two plans. The results show that TOU price can effectively guide the charging behavior of EV owners, and the increased difference between peak and valley load price will stabilize the load fluctuation in power grid and reduce the EV owners' charging cost.

Key words: electric vehicle, price guide, elastic coefficient, cost function

CLC Number:

TM 711

TONG Xin, GUO Chunlin, ZHANG Mingzhi. Price Guide of Electric Vehicles Charging Based on Cost Function[J]. Electric Power Construction, 2016, 37(9): 30-.

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