基于水量平衡的洋口电站泄洪闸门泄流曲线复核

Calibration of Floodgate Discharge Curve of Yangkou Hydropower Station Based on Water Balance

水电站闸门泄流曲线是计算泄流及确定闸门开度及开启孔数的重要依据。洋口电站闸门运行工况与设计工况存在明显差异,有必要对泄流曲线进行复核。鉴于电站积累的泄流资料不足,且受到调度限制,无法采用实测流量复核的方法,采用补充淹没系数进行理论修正,及通过误差-闸门开度相关分析进行实用性修正两种方法,复核泄流曲线。复核后精度满足日常调度计算要求。

The floodgate discharge curve of the hydropower station is the important basis for calculating the discharge flow and determining the gate opening and the number of opening gates. There are obvious differences between the operation situation and the design situation of the Yangkou floodgates, so it is necessary to calibrate the discharge curves. In view of the insufficient discharge data accumulated by the hydropower station and the limitation of dispatching, the method of checking the measured flow cannot be applied. Therefore, this paper used the supplemental submergence coefficient and the error-gate opening correlation analysis to correct the theories and practicability, respectively. Also, it calibrated the floodgate discharge curves and the accuracy would meet the requirement of daily dispatching calculation after calibrating.