关键词: 能源区块链, 虚拟电厂, PBFT共识机制, 分布式调度, 分布式能源

Abstract: In order to improve the safety and economy of distributed energy dispatching in virtual power plants, and in view of the high risk, high cost and low efficiency of traditional centralized dispatching schemes, a distributed dispatching strategy for virtual power plants based on energy blockchain is proposed. The blockchain technology is introduced into the energy Internet system to form an energy blockchain network to realize distributed dispatching of virtual power plants. By using the criterion of equa consumption micro-increasing rate, the goal of virtual power plant power dispatch optimization is achieved. Using the PBFT (practical Byzantine fault tolerance) consensus algorithm in the blockchain, each distributed energy node has the complete key data of the entire network. When the load fluctuates, each node calculates the new power of its own unit and uploads the updated value to the chain for consensus. Realizing the reasonable distribution of new loads among units. The analysis of calculation examples shows that the algorithm proposed in this paper is credible and effective. The use of the blockchain technology to realize the economically optimized dispatching of DERs (distributed energy resources) in virtual power plants provides a credible reference scheme for the future operation mode of virtual power plants.

Key words: energy blockchain, virtual power plant, PBFT (practical byzantine fault tolerance) consensus mechanism, distributed dispatching, distributed energy