Abstract
With the gradually opening of energy markets and popularization of Electric Vehicles (EVs), EVs can transmit, dispatch and recharge energy in different markets and domains dynamically. However, in Vehicular Energy Network, EVs may randomly enter and leave a market, it imposes a difficult problem in that how to schedule and distribute energy effectively. Additionally, the location of EV owners usually includes sensitive information such as home addresses, company names, hospital traces, and so on, which may be collected by attackers and may result in the privacy leakage about EV owners. In this article, we propose a decentralized blockchain-enabled energy trading scheme that can trade cross over various domains efficiently, which enables reliable transactions between EVs and energy nodes within short processing delay. It can also preserve the privacy of EV owners, by adopting the k-anonymity method in constructing a united request to hide the location information and creating a clocking area based on undirected graphs. Even though the server is maliciously attacked, the attacker cannot distinguish among EV owners, which breaks the linkage between real locations and identities to preserve EV owners' privacy. Finally, we conduct a comprehensive experimental evaluation to evaluate the trading performance and location privacy protection performance. The simulation results show that our proposed architecture outperforms over most state-of-the-art schemes in terms of processing delay and location privacy awareness.
Highlights
Vehicular Energy Network (VEN) [1] is built upon the existing transportation networks, which deploys wireless charging and discharging energy storage equipment, and electric vehicles (EVs) can trade with energy nodes dynamically
A majority of current energy trading infrastructures [3], [4] are centralized, there is a possibility for the occurrence of single point of failure since allowed a third party to serve as a controller to manage or control all transaction information
We propose a decentralized energy trading scheme via a consortium blockchain, and EV owners can trade with energy nodes cross-domain and directly in a peer to peer manner, which removes the assumption of third trusted party
Summary
Vehicular Energy Network (VEN) [1] is built upon the existing transportation networks, which deploys wireless charging and discharging energy storage equipment, and EVs can trade with energy nodes dynamically. K-anonymity is one of the most popular strategies to protect location privacy [18], and has been widely used in numerous systems, including social network and electronic health records, among others It cannot be directly applied in VEN, as the social features of EV users in VEN are not fully considered. We adopt consortium blockchain to build a network, which enables EV owners to trade with energy nodes directly, and allows EV owners and energy nodes to manage their resources and information in a decentralized, secure, trustful, transparent, anonymous and verifiable manner. We propose a decentralized energy trading scheme via a consortium blockchain, and EV owners can trade with energy nodes cross-domain and directly in a peer to peer manner, which removes the assumption of third trusted party.
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