Abstract: This paper proposes a power trading model based on a multi chain energy blockchain to address key challenges in traditional single chain power exchanges, such as limited stability, low efficiency, and credit ratings for energy producers and sellers. To enhance trading efficiency, a resource chain is introduced for adaptive rent-seeking and dynamic matching between supply and demand nodes, achieving decentralized resource scheduling and management. The practical Byzantine fault tolerance (PBFT) consensus mechanism is adopted on the power chain to ensure secure verification and consistent collaboration, effectively preventing unauthorized tampering of transaction data. Additionally, by incorporating a repayment capability index, a peer-to-peer (P2P) energy interaction model is established on the trading chain, promoting transparent pricing and improving credit rating between producers and sellers. Experimental results show that the multi-chain energy blockchain not only ensures fairness in transaction settlements, but also effectively improves energy utilization efficiency and enhances the credibility of transactions, providing theoretical and decision-making support for optimizing power trading models.

Key words: multi-chain structure, blockchain, power transaction, rent-seeking matching, peer-to-peer (P2P)

摘要： 为解决单链电力交易中稳定性差、效率低下及产销用户信用评分不足等问题，提出基于多链式能源区块链的电力交易模型。通过资源链实现供需节点间的自适应寻租与匹配，完成资源的分散调度和管理；利用 PBFT 共识机制，在电能链上执行安全校核与一致协作，防止交易数据被任意篡改。此外，基于还款能力指数在交易链上建立 P2P能源交互模型，通过公开透明的交易价格机制提升产销用户之间的信用度。实验结果表明，多链式能源区块链在保障交易结算公平性的同时，显著提升了能源利用率与交易可信度，为优化电力交易模型提供了理论支撑和决策支持。

关键词: 多链结构, 区块链, 电力交易, 寻租匹配, P2P