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考虑多时空尺度不确定性的风电并网系统动态优化调度研究

Research on Dynamic Optimal Scheduling of Wind Power Integrated Grids Considering Multi-Temporal and Spatial Scale Uncertainties

  • 摘要: 以高比例风电接入电网为背景,探讨多时间与空间不确定因素对电网运行的影响,并提出一种基于概率和模糊理论的电力系统动态优化调度方法。首先通过分析气象、负荷与设备运行之间的非线性耦合机制,构建了跨时间尺度的动态耦合模型。然后设计包含条件风险收益的二层优化目标,并采用改进的NSGA-II算法和滚动优化方法,实现快速求解。再通过电-热协同控制和储能的分层调度,有效提升系统运行的灵活性。仿真结果证明,所提方法不仅降低了运行成本,还促进了风电消纳,增强了系统的风险控制能力,整体表现非常出色。

     

    Abstract: Against the backdrop of high-penetration wind power integration into the power grid, this paper focuses on the impacts of multi-temporal and spatial uncertainties on grid operation and proposes a dynamic optimal scheduling method for power systems based on probability and fuzzy theories. Firstly, by analyzing the nonlinear coupling mechanisms among meteorology, load, and equipment operation, a dynamic coupling model across multiple time scales is constructed. A two-layer optimization objective incorporating conditional risk value is designed, and an improved NSGA-II algorithm combined with a rolling optimization method is employed to achieve rapid solution. Through electro-thermal cooperative control and the hierarchical scheduling of energy storage, the operational flexibility of the system is effectively enhanced. Simulation results demonstrate that the proposed method not only reduces operational costs but also promotes wind power consumption, while simultaneously strengthening the system′s risk control capability. The overall performance is excellent.

     

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