Sharing car park system for parking units of multiple EVs in a power market

Sharing of car parks is an industrial implementation of sharing economics. Parking position owners may share their positions with cars when they are not used. However, for electric vehicles (EVs), matching the cars and parking positions is not only an issue of time fitting and renting price but also of how the cars in the shared car parks may participate in the power market as per the behaviour of typical EVs. When multiple car parks are integrated, the competition between these car parks and their power price differences should also be considered. To overcome these issues, this paper proposes a sharing car park system for multiple parking units in a power market. This system can integrate multiple car parking units, where each unit contains its own position scenarios, power price, and independent power consumption. To address the competition between the units, a renting bids sequencing table is created to integrate the considerations of the renting price and the benefit contribution to the units. A nesting optimization model is also built for the benefit contribution computation. To process the nesting optimization model, a modified Lagrangian multiplier method is developed to establish an equivalent optimization model so that the optimization can be solved by a gradient-based algorithm.