基于区块链的多微网智能交易策略

doi:10.12204/j.issn.1000-7229.2021.12.013

摘要/Abstract

摘要：

随着配电网侧电力市场的开放,电力交易参与者呈现多元化,电力交易策略也不尽相同。针对多微网电力交易现有研究存在的没有完整的交易过程及多为集中式交易两方面问题,提出了基于区块链的多微网智能交易策略。首先,建立了基于区块链的多微网智能交易架构,为多微网交易提供去中心化的交易平台。然后,建立多微网电力交易策略,首轮交易时微网节点考虑交易成交风险因子进行报价,经过两阶段竞价撮合,根据考虑信誉度的出清策略进行市场出清,下一轮交易时可自适应调整风险因子,以获取更高的效益。最后,建立信誉度共识机制实现数据的一致性。仿真结果证明了交易策略和信誉度共识机制的有效性。

关键词: 多微网, 区块链, 交易成交风险因子, 信誉度, 共识机制

Abstract:

With the opening of the power market on the distribution grid side, the power trading participants are diversified, and the power trading strategies are also different. Aiming at the problems in the existing research on multi-microgrid power trading, such as no complete transaction process and mostly on centralized transaction, this paper proposes a smart transaction strategy based on blockchain for multiple microgrids. Firstly, we establish a multi-microgrid intelligent transaction architecture based on blockchain to provide a decentralized transaction platform. Secondly, we establish a multi-microgrid electricity-trading strategy. In the first round of trading, microgrid nodes make quotations considering transaction risk factors, and then clear the market according to the clearing strategy considering the reputation through two-stage bidding match. In the next round of trading, the risk factor can be adjusted adaptively to obtain higher benefits. Finally, a reputation consensus mechanism is used to achieve data consistency. The simulation results prove the effectiveness of the trading strategy and reputation consensus mechanism.

Key words: multi-microgrid, blockchain, transaction risk factor, reputation, consensus mechanism

中图分类号:

TM37

陶梦林, 王致杰. 基于区块链的多微网智能交易策略[J]. 电力建设, 2021, 42(12): 116-126.

TAO Menglin, WANG Zhijie. Smart Transaction Strategy Based on Blockchain for Multiple Microgrids[J]. ELECTRIC POWER CONSTRUCTION, 2021, 42(12): 116-126.

图/表 15

表1 4种共识机制对比

Table 1 Comparison of four consensus mechanisms

图1 基于区块链的多微网智能交易框架

Fig.1 Multi-microgrid intelligent transaction framework based on blockchain

图2 多微网智能交易流程

Fig.2 Intelligent transaction process of multiple microgrids

表2 微网初始参数

Table 2 Initial parameters of the microgrid

图3 微网价格队列

Fig.3 Microgrid price queue

图4 连续竞价阶段微网报价变化

Fig.4 Changes in microgrid quotations during the continuous bidding phase

图5 连续竞价阶段微网电量变化

Fig.5 Electricity changes during the continuous bidding phase

表3 集中撮合阶段的交易情况

Table 3 Transactions in the centralized matching stage

表4 2种电量出清策略的经济性对比

Table 4 Economic comparison of the two electricity clearing strategies

图6 交易成交风险因子变化过程

Fig.6 Change process of transaction risk factors

图7 报价变化过程

Fig.7 Change process of quotation

图8 微网效益变化过程

Fig.8 Change process of microgrid benefit

图9 3种运行方式下的经济对比

Fig.9 Economic comparison under three operating modes

图10 微网节点信誉度与成功挖矿概率的关系

Fig.10 Relationship between the reputation of microgrid nodes and the probability of successful mining

图11 3种场景下的区块出块时间

Fig.11 Block generation time in three scenarios

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