计及信誉值的虚拟电厂多主体合作博弈交易方法

Multi-agent Cooperative Game Trading Method for Virtual Power Plants Considering Reputation Value

随着分布式资源高比例接入,虚拟电厂作为聚合多方交易主体参与电力市场的新兴技术逐渐受到广泛关注。然而分布式资源出力不确定性和个体趋利性可能导致参与电力交易过程中造成违约行为。因此,提出计及信誉值的虚拟电厂聚合多方主体参与合作博弈电力交易方法。首先,针对虚拟电厂内各交易主体建立基于合约电量完成度的信誉值管理机制,并构建基于收益最大化的多主体合作出力模型;其次,采用合作博弈理论的Shapley值法确定初始收益分配方案;再次,为激励交易主体积极履行交易合约,合理转移交易风险,引入信誉值对初始方案进行修正,得出改进的收益分配方案;最后,基于MATLAB对算例进行计算,结果表明:合作前后各交易主体收益合计增长率约为101.16%,对比传统Shapley值法收益分配方案,最高和最低信誉值交易主体的收益增减幅度分别约为1.04%和3.13%,验证了所提交易方法的有效性与合理性。

With the increasing integration of distributed resources,virtual power plants as aggregators of multiple participants have garnered considerable attention in the electricity market.However,the uncertainty of output from distributed resources and individual profit-seeking behaviors may lead to default during power transactions.Therefore,this paper proposes a cooperative game-based electricity trading method for virtual power plants that considers reputation values.Firstly,a reputation management mechanism based on the completion rate of contracted electricity is established for the participants within the virtual power plants,along with a multi-party cooperative output model based on profit maximization.Secondly,the Shapley value method from cooperative game theory is employed to determine the initial profit allocation scheme.Subsequently,to incentivize participants to fulfill their transaction contracts and transfer transaction risks reasonably,reputation values are introduced to adjust the initial scheme,resulting in an improved profit distribution scheme.Finally,computational examples using Matlab demonstrate that the total profit of each participant increases by approximately 101.16%after cooperation.A comparison with traditional Shapley value-based profit allocation schemes shows that the profit variations of participants with the highest and lowest reputation values are approximately 1.04%and 3.13%respectively,validating the effectiveness and rationality of the proposed method.