【摘要】 根据电力系统中长期负荷预测的特点,提出了粗糙集理论与最小二乘支持向量机相结合的预测方法。应用粗糙集理论对影响负荷的众多因素进行约简,得到与负荷关系最为密切的核心因素,将其作为最小二乘支持向量机的输入矢量进行预测。实际算例分析表明,该预测模型符合中长期负荷预测的特点并具有较高的精度,方法是可行和有效的。更多还原

【Abstract】 According to the load characteristics of power system,a integrated method of rough sets and least square vector machines was proposed.Rough sets theory was used to reduce attributes that influence loads,thus the kernel factors were determined and using them as the input vector of least square support vector machines.Forecasting results of calculation examples show that the proposed forecasting method possesses satisfactory accuracy.The feasibility and validity of the method is proved by practical examples.更多还原