消纳大规模风电的鲁棒区间经济调度 (二)不确定集合构建与保守度调节
A Robust Interval Economic Dispatch Method Accommodating Large-scale Wind Power Generation Part Two Uncertainty Set Modeling and Conservativeness Adjustment
-
摘要: 对鲁棒区间经济调度中不确定集合的构建方法进行探讨。首先,建立考虑不确定变量概率边界值的鲁棒区间经济调度模型。然后,针对调度中心掌握风电预测信息的不同情况,相应地提出构建满足一定置信水平的不确定集合的方法,其中考虑了风电场的出力相关性。该方法使得调度人员可以灵活地根据风险偏好程度来控制鲁棒调度策略的保守度。最后,在改进的IEEE 24节点系统上进行蒙特卡洛仿真,验证所提出的不确定集合构建方法的有效性,并对其性能进行了比较。Abstract: The modeling method for uncertainty sets in the robust interval economic dispatch is discussed.Firstly,a robust interval economic dispatch model is developed with probabilistic boundaries of uncertainty variables.Considering various wind power prediction information provided by the system control centers,different methods are proposed for modeling of uncertainty sets with assigned confidence levels,in which wind power correlation among wind farms is taken into consideration.The proposed approach enables system operators to adjust the conservativeness of robust dispatch schedules flexibly according to the tolerance of risks.Finally,Monte Carlos simulations are carried out on a modified IEEE 24 bus system to verify effectiveness of the uncertainty set modeling methods,and to compare the performance of these schemes.
下载:
