刘吉成, 冯淑贤, 宋亚楠, 孙嘉康. 计及源荷不确定性的虚拟电厂优化调度模型[J]. 现代电力. DOI: 10.19725/j.cnki.1007-2322.2023.0205
引用本文: 刘吉成, 冯淑贤, 宋亚楠, 孙嘉康. 计及源荷不确定性的虚拟电厂优化调度模型[J]. 现代电力. DOI: 10.19725/j.cnki.1007-2322.2023.0205
LIU Jicheng, FENG Shuxian, SONG Yanan, SUN Jiakang. A Scheduling Model of Virtual Power Plant Considering Source-load Uncertainty[J]. Modern Electric Power. DOI: 10.19725/j.cnki.1007-2322.2023.0205
Citation: LIU Jicheng, FENG Shuxian, SONG Yanan, SUN Jiakang. A Scheduling Model of Virtual Power Plant Considering Source-load Uncertainty[J]. Modern Electric Power. DOI: 10.19725/j.cnki.1007-2322.2023.0205

计及源荷不确定性的虚拟电厂优化调度模型

A Scheduling Model of Virtual Power Plant Considering Source-load Uncertainty

  • 摘要: 为了应对可再生能源输出和负荷需求不确定性带来的风险,提出了一种联合风机、光伏、负荷和储能运营的虚拟电厂(virtual power plant,VPP)鲁棒优化调度模型。优化目标是在源荷不确定性的情况下,最大化系统收益并降低惩罚成本,从而构建了min-max-min形式的两阶段鲁棒优化模型。首先,在预调度阶段,根据源荷侧的预测值来制定VPP日前收益最大的出力方案;其次,再调度阶段结合前一阶段的决策,VPP利用购售电和储能系统等快速调节出力,应对不确定性变量的波动进而在最坏情况下实现最佳运行效益;再次,在交互迭代中,使用了对偶变换及列约束生成算法(columnand-constraint generation C&CG)。最后,仿真结果不仅验证了模型的经济性、鲁棒性和稳定性,而且表明优化调度方案有助于减少不确定性带来的波动,最终实现平衡VPP的经济效益和运营风险。

     

    Abstract: To address the risks arising from the uncertainties in renewable energy output and load demand, a robust optimal scheduling model of virtual power plant (VPP) integrating wind, photovoltaic, load and storage operation is proposed. A two-stage robust optimization model, constructed in the form of min-max-min, is designed based on the uncertainties of the source load, aiming to maximize system revenues and minimize penalty costs as well. Firstly, in the pre-scheduling stage, the output plan with the maximum VPP income is formulated according to the predicted value of the source load side. The second stage of VPP involves combining the decisions made in the previous stage and utilizing means such as power purchase, sales, and energy storage systems for rapid output regulation. These aforementioned measures are employed to manage the fluctuations of uncertain variables and ultimatelymaximize operating benefits even in the worst-case scenario. Thirdly, The algorithms utilized in the interaction iteration are based on pairwise transformations and columnand-constraint generation (C&CG) techniques. Finally, the experimental simulation results not only validate the economics, robustness and stability of the model, but also demonstrate that the optimized scheduling scheme contributes to reducing the fluctuations caused by uncertainty, which ultimately achieves a balance between the economic benefits and operational risks of the VPP.

     

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