利用区间流量修正紧水滩电站闸门泄流曲线

Utilization of Interval Flow in Correcting Jinshuitan Power Station Sluice Discharge Curve

紧水滩水电站开闸泄洪时,计算的石塘水电站区间水量与区间控制站计算的水量误差较大。本文通过对紧水滩电站泄洪期间日、时段水量平衡误差趋势以及两座水电站出、入库水量平衡原理分析,查找了引起误差的关键原因;通过闸门流量曲线误差的分析,确定了泄流曲线误差与区间控制站流量的因果关系;对闸门泄流曲线进行了修正,使修正后闸门泄流曲线查算流量误差符合水文计算规范要求,使上下水库水量平衡计算更加合理,为防洪调度提供了更加准确的基础资料。

When the sluice of Jinshuitan Power Station is opened for discharge, the calculated Shitang hydropower station interval flow has larger gap from flow calculated by interval controlling station. Daily and hour section flow balance error trends of Jinshuitan Power Station, feeding and discharging flow balance principles of the two hydropower stations are analyzed in the paper. Key causes leading to errors are discovered. Sluice flow curve errors arc analyzed to determine the causality between discharge curve error and interval control station flow. Sluice discharge curves are corrected; thereby the corrected sluice discharge curve calculation flow error is in line with requirements in hydrological calculation specifications. Upper and lower reservoir water flow balance calculations are more reasonable to provide more accurate foundation data for flood control dispatching.