基于水量平衡原理分段拟合库容曲线

Piecewise fitting reservoir capacity curve based on principle of water balance

库容曲线是水库一项必不可少的基本资料,是水库规划设计和管理调度的重要依据。抽水蓄能电站一般有上水库和下水库两个水库,发电和抽水都在其之间进行。本文先基于水量平衡原理,采用流量反算实验,得到上、下水库的＂水位~库容＂数据组;再根据电站竣工后测定地形图得到的上、下水库＂水位~库容＂关系表,分段进行数据优化;最后采用最小二乘法,分段对上、下水库库容曲线进行拟合分析。

The capacity curve is essential data for reservoir; it is also important basis for planning design and management of reservoir. Generally speaking, pumped storage power station has two reservoirs, the station generating and pumping between the upper reservoir and the lower reservoir. At first, based on principle of water balance and with flow inverse computation, we can have the 'level-capacity' data group of two reservoirs; based on topographic map measured when the station was completed, we have the 'level-capacity' table of two reservoirs, then make segmented data optimization, at last, make piecewise fitting analysis of capacity curve for upper and lower reservoir with least square method.