Price and Time-Slot Negotiation Protocol for EVs Charging in Highly Congested Distribution Networks

Abstract

This paper presents a multi-issue bargaining mechanism in order to negotiate simultaneously the price and time-slot for electric vehicles (EVs) charging in congested power distribution networks. Alleviating the need for investments in distribution infrastructure to install EV chargers, an aggregator coordinating EVs provides flexibility to the system and reduces congestion. The proposed negotiation algorithm is based on well known Rubinstein alternating offers which is implemented and tested using a simple case scenario between EV and aggregator. Results achieved validates application of proposed negotiation mechanism for EV charging systems. Moreover, the general detailed description of the protocol as well as the implemented utility functions in this paper could expand its viability for more complex applications.