A Decentralized Electricity Transaction Mode of Microgrid Based on Blockchain and Continuous Double Auction

摘要

This paper proposed a decentralized electricity transactions mode of microgrid based on blockchain and continuous double auction (CDA) mechanism. The buyer and seller shall first complete the transaction matching in CDA market. Considering the frequent price fluctuation in CDA market, this paper proposed the adaptive aggressiveness strategy, which enables the trader to adjust the quotation timely according to the market changes. Then DG and consumer exchange digital certificate of power and expenditure on the blockchain system, and the consumers' interests are guaranteed by multi-signature when DG cannot generate power due to failure or other reasons. Digital certification of electricity assets is replaced by the sequence number with specific tags in the transaction script, and the size of digital certification can be adjusted according to transaction energy quantity. Finally, the feasibility of proposed mode through a microgrid case and settlement process is given.