考虑参与者贡献的虚拟电厂收益分配方法研究

A Revenue Allocation Method for Virtual Power Plants Considering Contributions of Participants

  • 摘要: 虚拟电厂(virtual power plant,VPP)是新型电力系统建设中重要的市场主体之一,合理分配收益是推动其有序建设的重要助力。该文提出考虑参与者权责的虚拟电厂收益分配策略,以虚拟电厂总收益最大为目标,考虑风光出力的不确定性,构建含分布式风光电源、储能设备、可调节负荷的虚拟电厂日内优化调度模型,模拟不同参与者参与下的虚拟电厂性能。定义参与者历史信誉度、偏差调整贡献度和收益增长贡献度指标,从历史表现和待分配日双重时间尺度评价各参与者对VPP整体收益的贡献。提出考虑贡献因素加权的改进Shapley值法,对虚拟电厂总体收益进行分配,使收益分配可以兼具历史贡献和待分配日性能双重影响,以激励各参与者参与VPP协同控制。算例结果表明,所提收益分配策略可以明确虚拟电厂内部各参与者对虚拟电厂整体收益和考核的贡献,实现“谁提供、谁获利”,保障虚拟电厂聚合各参与者收入分配的公平性和合理性。

    Abstract: Virtual power plants (VPPs) play a crucial role as market players in the development of new power system, and the reasonable distribution of revenue is an important aid to promote its orderly construction. In this paper, we propose a revenue allocation strategy for virtual power plants that takes into account the rights and responsibilities of the participants. To maximize the total revenue of the virtual power plants while accounting for the uncertainty of wind power output, an intraday optimal dispatching model for virtual power plants is developed, containing distributed wind power, energy storage devices and adjustable loads. The performance of the virtual power plants is simulated with the involvement of various participants. In addition, to assess the contribution of each participant to the overall revenue of the VPP from the dual time scales of historical performance and the day-to-be-assigned date, three key metrics, namely the historical credibility of the participants, the contribution to deviation adjustment and the contribution to profit increase, are all defined. An improved Shapley value method considering the weighting of the contribution factors is proposed to allocate the overall revenue of the virtual power plant. Through this approach, the distribution of the revenue can achieve a dual impact of both the historical contribution and the day-to-be-assigned date performance, thereby motivating the participants to engage in the collaborative control of the VPP. Example results demonstrate that the proposed revenue allocation strategy clarifies the contribution of each participant to the overall revenue and assessment of the virtual power plant, realizes the principle of "those who contribute shall benefit", and ensures the fairness and reasonableness of the revenue allocation of each participant in the virtual power plant aggregation.

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