With the development of distributed energy resources, virtual power plants are faced with significant data impacts during inter-plant interactions. Therefore, it is crucial to explore interaction modes suitable for inter-plant distributed resource trading scenarios and develop corresponding trust systems. Blockchain technology's characteristics of data distribution, high transparency, and decentralization provide coping mechanisms for distributed energy transactions in a weak trust environment. In this paper, an overall architecture of a multi-virtual power plant transaction system is proposed, outlining the transaction process of multi-virtual power plants. To address inter-plant and on-site trading scenarios of multi-virtual power plants, the main subordinate chain mode is presented and a cross-chain channel through the main side anchoring technology is constructed in this paper. This approach enables a multi-chain collaborative operation mode. To enhance the system's operational efficiency, nodes are classified based on their different functions, and a differentiated credit evaluation mechanism is designed for them. The practical Byzantine fault-tolerant algorithm is improved with this index. Finally, the effectiveness of the improved consensus algorithm through experiments conducted on the proposed system architecture is verified.
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Cai et al. (2024) studied this question.
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