| 引用本文: | 任建文,张青青.基于能源区块链的虚拟电厂两阶段鲁棒优化调度[J].电力自动化设备,2020,40(8): |
| REN Jianwen,ZHANG Qingqing.Two-stage robust optimal scheduling of virtual power plant based on energy blockchain[J].Electric Power Automation Equipment,2020,40(8): |
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| 摘要: |
| 随着可再生能源电力接入比重逐渐增大，电力系统的构架、控制方式、运行模式等开始发生改变，将区块链技术引入能源互联网系统中，形成能源区块链网络，有利于解决信息安全等问题。将区块链引入虚拟电厂(VPP)的调度运行机制中，针对新能源参与的电力系统模型，提出适用于VPP的实用拜占庭容错算法共识机制以实现区块链下半中心化的两阶段鲁棒优化调度模型，保留了VPP控制中心的导向作用。阶段1对预调度方案进行求解；阶段2利用区块链技术获取历史数据，建立数据驱动的风电出力不确定集合用于求解调控方案，该约束集合可排除部分极端场景，降低了模型的保守度。优化过程中利用区块链共识机制的验证作用，摒弃了被恶意节点篡改的信息，增强了系统的容错能力。通过算例仿真验证了所提方法的有效性。 |
| 关键词: 能源区块链网络 虚拟电厂 实用拜占庭容错算法 共识机制 数据驱动 鲁棒优化 两阶段调度 |
| DOI：10.16081/j.epae.202009004 |
| 分类号:TM734 |
| 基金项目:国家自然科学基金资助项目(U1866204) |
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| Two-stage robust optimal scheduling of virtual power plant based on energy blockchain |
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REN Jianwen, ZHANG Qingqing
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State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071003, China
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| Abstract: |
| With the increasing proportion of renewable energy resource access, the architecture, control method and operation mode of the power system begin to change. The introduction of blockchain technology into energy internet system to form an energy blockchain network is conducive to solving the information security and other issues. The blockchain is introduced into the scheduling and operation mechanism of VPP(Virtual Power Plant). Aiming at the power system model participating with new energies, the practical Byzantine fault tolerance algorithm consensus mechanism suitable for VPP is proposed to realize the semi-centralization two-stage robust optimal scheduling model under blockchain, which remains the guiding role of VPP control center. In the first stage, the pre-scheduling scheme is solved. In the second stage, the blockchain technology is used to obtain historical data, and a data-driven wind power output uncertain set is established to solve the regulation scheme. This constraint set can exclude some extreme scenarios to reduce the conservatism of the model. In the optimization process, the verification function of blockchain consensus mechanism is used to discard the information tampered by malicious nodes and enhance the system’s fault tolerance capability. The effectiveness of the proposed method is verified by a simulation example. |
| Key words: energy blockchain network virtual power plant practical Byzantine fault tolerance algorithm consensus mechanism data-driven robust optimization two-stage scheduling |
