A Trusted Contract-Based Trading Model for Distributed New Energy Aggregation Trading

doi:10.11930/j.issn.1004-9649.202503034

Abstract

Abstract:

Current pooled green electricity transactions face dual challenges: inefficient supply-demand matching and the absence of reliable trust frameworks. Addressing these issues calls for a multi-technology approach to establish a flexible and trustworthy trading system. To address this, this paper innovatively integrates the subjective logic trust evaluation model, the blockchain's immutable evidence storage mechanism, and the smart contract's automatic execution framework to construct a multi-technology collaborative trusted contract-based trading model. This model builds a reputation quantification model based on the analysis of transaction behavior characteristics to dynamically depict the evolution law of the credibility of participating entities; design a distributed game matching mechanism based on the firework algorithm to achieve autonomous and optimized matching of participating entities; and further develops a full-process smart contract chain based on blockchain to realize the trusted and automated execution of the closed loop from aggregated declaration, matching to fund settlement. Simulation results show that this solution significantly improves transaction performance compared to the traditional model: the dynamic reputation mechanism enables real-time assessment of the credibility of transaction entities, effectively purifying the trading environment; the consumption rateincreases by 46.5% and the revenue increases by 38.2%; the contract execution delay is reduced by 49.7% and the throughput is increased by 55%.

Key words: distributed renewable energy, aggregator, reputation evaluation, non cooperative games, smart contracts

ZHANG Nan, GUO Qinglei, DU Zhe, WANG Dong, ZHANG Yan, ZHAO Liang, JIANG Yu. A Trusted Contract-Based Trading Model for Distributed New Energy Aggregation Trading[J]. Electric Power, 2025, 58(9): 205-218.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202503034

https://www.electricpower.com.cn/EN/Y2025/V58/I9/205

Figures/Tables 16

Fig.1 Trusted contractual trading architecture for new energy aggregation trading

Fig.2 Distributed new energy aggregation participates in the green power trading process

Fig.3 Non-cooperative game trading model

Fig.4 Aggregation layer smart contract execution process

Fig.5 Transaction layer smart contract execution process

Fig.6 Regulatory smart contract execution process

Fig.7 Reputation evaluation of power producer 1

Fig.8 Reputation evaluation of power producer 2

Fig.9 Reputation evaluation of aggregator 1

Fig.10 Reputation evaluation of aggregator 2

Fig.11 Reputation evaluation of power user 1

Fig.12 Reputation evaluation of power user 2

Fig.13 Trading volume between buyers and sellers

Fig.14 Profit for both buyers and sellers

Fig.15 System delay

Fig.16 Normalized throughput of the system

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