Distributed Energy Transaction Based on Multi-chain Collaborative Blockchain

doi:10.12204/j.issn.1000-7229.2021.11.004

Abstract

Abstract:

The traditional electricity market transaction is mainly that the electricity generated by power plants dispatched to the customers by dispatch agencies in a centralized manner, according to power supply and demand market and plans. With the rapid development of distributed energy and the need for a large number of power sources being connected to the grid, processing speed of centralized dispatching will become a development bottleneck. The use of distributed energy transactions can effectively solve such problems. Blockchain has the characteristics of decentralization, data openness and transparency. In view of the low reliability of centralized dispatching of distributed energy transactions and the bottleneck of processing speed, combined with the characteristics of blockchain, a distributed energy trading method based on multi-chain cooperative blockchain is proposed firstly. According to the partition of regions, this method solves the problem of slow transaction speed of blockchain system. Then, the distributed energy transaction matrix is proposed by combining the useful workload proof mechanism with the power matching scheduling algorithm, which can maintain the decentralization and solve the problem of computing power waste of workload proof mechanism.

Key words: blockchain, distributed energy trading, master-slave multi-chain, proof of useful work

CLC Number:

TM73

XUAN Jiaxing, LIU Xu, LI Guomin, SUN Xuyang. Distributed Energy Transaction Based on Multi-chain Collaborative Blockchain[J]. ELECTRIC POWER CONSTRUCTION, 2021, 42(11): 34-43.

Figures/Tables 11

Table 1 Blockchain architecture of trading system

Fig.1 Structure of the distributed energy trading system

Fig.2 Flow chart of distributed energy transactions

Fig.3 Schematic diagram of the master-slave multi-chain model

Table 2 Sub-chain block transaction structure

Table 3 Cross-chain transaction structure of main chain blocks

Table 4 Main-chain block storage and sub-chain transaction structure

Table 5 Performance comparison between PoUW and common consensus algorithms

Fig.4 Flow chart of calculation task

Fig.5 Diagram of 5-node power system

Table 6 Power of lines

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