A blockchain consensus mechanism that uses Proof of Solution to optimize energy dispatch and trading

【Author】 Chen, Sijie; Mi, Hanning; Ping, Jian; Yan, Zheng; Shen, Zeyu; Liu, Xuezhi; Zhang, Ning; Xia, Qing; Kang, Chongqing

【Source】NATURE ENERGY

【影响因子】67.439

【Abstract】Blockchains utilize different consensus mechanisms, among which Proof of Work is one of the more energy and computationally intensive. Chen et al. propose a new mechanism that solves the electricity dispatch problem in grids to establish consensus and demonstrate the effectiveness of the solution in distributed energy system management. Traditional centralized optimization and management schemes may be incompatible with a changing energy system whose structure is becoming increasingly distributed. This challenge can hopefully be addressed by blockchain. However, existing blockchains have not been well prepared to integrate mathematical optimization, which plays a key role in many energy system applications. Here we propose a blockchain consensus mechanism tailored to support mathematical optimization problems, called Proof of Solution (PoSo). PoSo mimics Proof of Work (PoW) by replacing the meaningless mathematical puzzle in PoW with a meaningful optimization problem. This is inspired by the fact that both the solutions to the puzzle and to an optimization problem are hard to find but easy to verify. We show the security and necessity of PoSo by using PoSo to enable energy dispatch and trading for two integrated energy systems. The results show that compared with existing optimization schemes, PoSo ensures that only the optimal solution is accepted and executed by participants. Further, compared with existing blockchains, PoSo can seamlessly incorporate mathematical optimization and minimize the workload associated with searching and verifying the optimum.

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【发表时间】

【收录时间】2022-06-12

【文献类型】实证性文章

【主题类别】

区块链技术-核心技术-共识机制