基于最小二乘曲线的水电站入流平滑处理  

Application of Least Square Curve Fitting with Constraints to Discharge Smoothing

作　　者：张俊[1] 廖胜利[2] 程春田[2] 李保健[2] 申建建[2] 

机构地区：[1]浙江省电力调度通信中心,浙江杭州310007 [2]大连理工大学水电与水信息研究所,辽宁大连116024

出　　处：《水电能源科学》2011年第4期55-56,154,共3页Water Resources and Power

基　　金：国家自然科学基金资助项目(50979010);国家"973"前期专项基金资助项目(2009CB226111)

摘　　要：以双牌水电站为例,针对水库入库过程推算结果的"锯齿"现象,构造了入库流量与时间的多项式关系进行平滑模拟,并建立以水量平衡为约束的最小二乘曲线拟合模型求解。结果表明,该方法确保了模拟结果与原始过程计算周期内水量相等、误差权重系数具有相同最大值的特征,拟合效果、精度较高。Regarding to the hackle impact on discharge routing,an optimum polynomial between discharge and time is constructed,and a fitting model based on least square principle is built to fix the coefficients of the polynomial.Shuangpai hydropower station is taken for an example to demonstrate the modeling.The results show that the method ensures equal reservoir water and maximal error weight coefficient between the simulation and original procedure,which has good fitting effect and high precision.

关 键 词：带约束最小二乘 曲线拟合 水量平衡 水库流量 平滑处理 

分 类 号：TV62[水利工程—水利水电工程] P333.9[天文地球—水文科学]