计及风功率波动和灵活性资源的新型电力系统优化调度

New power system optimal scheduling based on wind power fluctuations and flexible resources

  • 摘要: 提高源侧波动性能源的预测准确度、深度开发荷侧灵活资源的调节特性以及源荷协调优化是解决高比例风电联网导致的电力系统稳定问题的有效途径。首先,在源侧分析风功率的波动特性,构建基于三参数幂律模型的风功率预测模型;在荷侧引入可转移负荷并确定调度策略。然后,建立计及低碳与经济效益的风储联网调度系统模型,并采用改进蝙蝠算法对所提模型进行求解。最后,比较所提预测方式以及调度策略与传统预测方式在经济性、低碳性上的差异。仿真分析表明,基于三参数幂律模型的预测方式以及可转移负荷调度策略显著降低了系统的综合成本和弃风率。

     

    Abstract: Improving the predictionaccuracy of the fluctuating energy on the source side, developing the adjustment characteristics of the flexible resources on the load side deeply, and coordinating the optimization of the source and load are the effective ways to solve the power system stability problem caused by the high proportion of wind power networking. Firstly, the wind power fluctuation characteristics are analyzed on the source side, and the wind power prediction model based on the three-parameter power law model is constructed. The transferable load is introduced into the load side and the scheduling strategy is determined. Then, a wind storage network scheduling system model considering low carbon and economic benefits is established, and the improved bat algorithm is used to solve the proposed model. Finally, a comprehensive comparison is made between the proposed method prediction and scheduling strategy and the traditional prediction method in terms of economy and low carbon. The simulation analysis shows that the prediction method based on the three-parameter power law model and the transferable load scheduling strategy can significantly reduce the comprehensive cost and the wind abandonment rate of the system.

     

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