【Author】
Chen, Sijie; Mi, Hanning; Ping, Jian; Yan, Zheng; Shen, Zeyu; Liu, Xuezhi; Zhang, Ning; Xia, Qing; Kang, Chongqing
【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.
【标题】一种使用解决方案证明优化能源调度和交易的区块链共识机制
【摘要】区块链利用不同的共识机制，其中工作量证明是能量和计算密集型之一。陈等人。提出解决电网电力调度问题的新机制，以建立共识并证明该解决方案在分布式能源系统管理中的有效性。传统的集中优化和管理方案可能与结构日益分散的不断变化的能源系统不兼容。区块链有望解决这一挑战。然而，现有的区块链还没有做好整合数学优化的准备，这在许多能源系统应用中起着关键作用。在这里，我们提出了一种专门用于支持数学优化问题的区块链共识机制，称为解决方案证明 (PoSo)。 PoSo 通过用有意义的优化问题替换 PoW 中无意义的数学难题来模仿工作量证明 (PoW)。这是因为难题和优化问题的解决方案都很难找到但很容易验证。我们通过使用 PoSo 来实现两个集成能源系统的能源调度和交易，展示了 PoSo 的安全性和必要性。结果表明，与现有的优化方案相比，PoSo 保证了只有最优解被参与者接受和执行。此外，与现有区块链相比，PoSo 可以无缝地结合数学优化，并最大限度地减少与搜索和验证最优值相关的工作量。
【文献类型】Article; Early Access
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