基于优化计算型区块链系统的虚拟电厂模型与调度策略  

Virtual Power Plant Model and Scheduling Strategy Based on Optimized Computing Block-Chain System

作　　者：刘雨佳 樊艳芳[1] 白雪岩 宋雨露 Liu Yujia;Fan Yanfang;Bai Xueyan;Song Yulu(School of Electrical Engineering Xinjiang University,Urumchi 830092,China)

机构地区：[1]新疆大学电气工程学院,乌鲁木齐830092

出　　处：《电工技术学报》2023年第15期4178-4191,共14页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51767023);新疆维吾尔自治区研究生科研创新计划(XJ2022G041);天山英才培养计划(2022TSYCLJ0019)资助项目。

摘　　要：为提高虚拟电厂(VPP)的调度运行效率和信息安全水平,该文对区块链技术进行改进,并将其运用到VPP的优化调度过程中。首先以VPP分布式运行环境为背景,提出基于区块链的分布式粒子群优化算法和优化计算工作量证明共识算法;然后根据该算法,对传统区块链系统进行改进,形成了适用于VPP的优化计算型区块链系统;最后基于此系统建立了VPP结构模型,并提出相应的调度策略。仿真结果表明,优化计算型区块链系统能够较好地适应VPP运行环境,可以有效提高VPP调度效率,同时基于该系统建立的VPP模型和提出的调度策略,在降低系统运行成本、提高风/光消纳水平、减少二氧化碳排放量等方面相比传统VPP具有显著优势。At present,there are four problems in the actual operation of the virtual power plant(VPP):(1)The centralized,centralized-decentralized and fully decentralized control modes of the VPP currently used cannot achieve common optimization in flexibility,compatibility and scalability,which will affect the overall operation effect of the VPP.(2)Because the VPP uses the network for two-way communication,the power generation and load data of each unit in the system are vulnerable to malicious attacks and tampering by hackers,which makes the operation process of the VPP wrong,resulting in increased system costs or equipment failures.(3)Wind,solar and other renewable energy power generation has uncertainty and randomness.If the VPP cannot quickly adjust the operation state when the power generation situation changes dramatically,it will lead to the increase of penalty costs and affect the overall benefits of the system.(4)The distributed characteristics of VPP make it difficult to integrate and coordinate the internal units.In the existing research,intelligent optimization algorithm is usually used to calculate the scheduling strategy of VPP,but such algorithm does not adapt to the distributed characteristics of VPP,and there are still deficiencies in calculation time and accuracy,which will lead to the rise of system operation cost and the decline of operation efficiency.To solve these problems,this paper proposes a VPP model level and operation efficiency of VPP.Firstly,the basic structure of the block-chain system and the feasibility of the combination of block-chain technology and VPP are studied,and then on this basis,block-chain based distributed particle swarm optimization algorithm(BD-PSO)and proof of optimization calculation workload(POCW)consensus algorithm suitable for VPP operation environment are proposed,improve the computing speed of scheduling optimization problems.Thirdly,the improved BD-PSO algorithm and POCW algorithm are used to improve the traditional block-chain,and an optimized computational block-ch

关 键 词：虚拟电厂 区块链 分布式 共识算法 粒子群优化算法 

分 类 号：TM732[电气工程—电力系统及自动化]