Abstract
Blockchain-based peer-to-peer (P2P) energy trading is one of the most viable solutions to incentivize prosumers in distributed electricity markets. However, P2P energy trading through an open-end blockchain network is not conducive to mutual credit and the privacy protection of stakeholders. Therefore, improving the credibility of P2P energy trading is an urgent problem for distributed electricity markets. In this paper, a novel double-layer energy blockchain network is proposed that stores private trading data separately from publicly available information. This blockchain network is based on optimized cross-chain interoperability technology and fully considers the special attributes of energy trading. Firstly, an optimized ring mapping encryption algorithm is designed to resist malicious nodes. Secondly, a consensus verification subgroup is built according to contract performance, consensus participation and trading enthusiasm. This subgroup verifies the consensus information through the credit-threshold digital signature. Thirdly, an energy trading model is embedded in the blockchain network, featuring dynamic bidding and credit incentives. Finally, the Erenhot distributed electricity market in China is utilized for example analysis, which demonstrates the proposed method could improve the credibility of P2P trading and realize effective supervision.
Highlights
The global electricity market is undergoing drastic changes, and consumers are increasingly demanding renewable resources to reduce greenhouse gas emissions [1]
P2P energy trading can stimulate the vitality of the distributed electricity market, especially in the distributed renewable energy-rich areas or remote areas where the grid cannot be extended
P2P energy trading based on blockchain technology has not been implemented on a large scale so far
Summary
The global electricity market is undergoing drastic changes, and consumers are increasingly demanding renewable resources to reduce greenhouse gas emissions [1]. According to the commitment made by the Chinese government at the 75th UN General Assembly, China will strive to ensure their carbon dioxide emissions reach their peak by 2030 and achieve carbon neutrality by 2060 [2]. This development strategy would increase the share and utilization efficiency of renewable energy in energy production. A large number of renewable energy infrastructures has brought about a surplus of power supply and decline in the utilization rate of base stations, which need to be solved urgently [5,6]
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