Abstract
With the decreasing reserves of fossil energy and the increasing capacity of renewable energy generation, the scale of microgrid based on distributed generations is expanding. However, more operation data and transaction information of microgrids will also bring several problems: the sufficient capacity of the server in the central management needed, the crises of trust among members, the transparency of transaction information and the confidentiality of data storage. In this paper, blockchain technology is used to deal with these problems as distributed data storage technology. A double-layer framework of energy transactions based on blockchain in multi-microgrids is proposed to provide decentralized trading, information transparency and mutual trust system of each node in the trading market. The central node within the microgrid collects the demand information of the trading market in lower layer and sends them to the trading market of multi-microgrids in higher layer to seek the energy transaction. The continuous double auction mechanism is used in the trading market to guarantee free and fair transactions among nodes. The proposed transaction framework effectively reduces the transaction volume with the main grid which improves energy utilization. Comprehensive simulation results are presented to prove the feasibility of the proposed transaction framework.
Highlights
In recent years, microgrids (MGs) have become a research hotspot in the energy field
3) A double-layer energy trading framework based on blockchain is designed including physical and information architecture, which realizes the transfer of transaction information between the trading markets within the microgrid and the multi-microgrids system
In this paper, the architecture and operating mechanism of the blockchain are described in detail to prove the high degree fit between the microgrid power transactions and blockchain technology
Summary
Microgrids (MGs) have become a research hotspot in the energy field. In [27], a secured architecture for the optimal operation of smart hybrid AC-DC microgrids with a proper DAG-based data transaction framework is proposed, in which a stochastic approach based on Modification Teacher Learning Algorithm (MTLA) and Point Estimate Method (PEM) is used to solve the optimal power scheduling. No research has been done to design an electricity market transaction framework for the multi-microgrids (MMGs) based on blockchain considering both the transaction internal microgrid and among microgrids. In order to fill the research gap in this area, this paper proposed a double-layer framework of energy transactions for multi-microgrids and internal microgrid based on blockchain. 3) A double-layer energy trading framework based on blockchain is designed including physical and information architecture, which realizes the transfer of transaction information between the trading markets within the microgrid and the multi-microgrids system.
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