基于条件风险价值的虚拟电厂优化运行与收益分配

Optimal Operation and Profit Allocation of Virtual Power Plants Based on Conditional Value-at-risk

  • 摘要: 虚拟电厂(virtual power plant,VPP)作为解决可再生能源并网的技术途径,可有效帮助各类分布式能源参与电力市场交易并提高整体竞争力与经济性。为此文中提出了一种聚合多类分布式能源的VPP运营策略及其内部成员的收益分配方法。首先,构建了由风电机组、燃气机组、储能设备和可中断负荷组成的VPP优化运行模型,并运用条件风险价值理论对不确定因素风险进行量化处理,得到了不同风险水平下VPP的运营策略和收益;接着,基于内部各成员的风险水平、收益贡献和成员吸引力,采用权重系数改进Shapley值法,提出了适用于多个成员的VPP收益分配模型;最后,以某VPP为研究对象进行算例分析,验证了所建模型的有效性,确保了收益分配结果的公平性与合理性,对各类分布式能源参与到VPP起到积极作用,对维护VPP联盟的稳定具有重要意义。

     

    Abstract: Virtual power plants (VPP) serve as a solution for the seamless integration of renewable energy sources into the grid, effectively facilitating participation in electricity market transactions by various types of distributed energy resources and thus improving overall competitiveness and economic viability. In this article, we propose a VPP operating strategy that aggregates multiple types of distributed energy resources, along with a method for profit allocation among its internal members. Firstly, we construct an optimized VPP operating model composed of wind turbine, gas turbine, energy storage equipment, and interruptible loads. We employ conditional value-at-risk theory to quantify the risk of uncertain factors, and derive VPP operating strategies and profits under different risk levels. Secondly, we improve the Shapley value method with weighted coefficients to develop a VPP profit allocation model that applies to multiple members, based on the risk levels, profit contributions, and member attractiveness of internal members. Finally, we utilize a VPP as a case study to analyze the effectiveness of the model. The fairness and reasonableness of profit allocation results are ensured, which plays a positive role in the participation of various types of distributed energy resources in the VPP and is also of great significance to maintaining the stability of the VPP alliance.

     

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