基于调度特征的水电站水库丰平枯水年划分

Research of classification for wet/normal/dry year based on the operation characteristics of hydropower station

传统的径流丰平枯划分方法未能结合水库的调节作用,因此在指导水电站水库实际调度时具有一定的局限性。本文以金沙江中游梯级水电站水库优化调度系统为例,通过对系统特征的分析,提出了基于调度特征的水电站水库丰平枯水年划分方法。其划分结果与实际调度结果的一致性高达94%,表明了该方法的可靠性。传统的水文划分是基于输入的单因子、静态划分,而基于调度特征的划分是基于输出的多因子、动态划分,可以适应复杂的实际调度情景,能更有效地指导水电站水库调度模式的选择,具有重要的实用价值。

The traditional runoff classification method of wet/normal/dry year is not combined with the actu-al operation process of hydropower stations,which makes it has some limitations in guiding the actual oper-ation of hydropower stations.By taking the Jingsha River cascade hydropower stations as an instance,thispaper proposed a new classification method of wet/normal/dry year after the system characteristics analysisof hydropower stations.Its classification results are consistent with the actual operation results,and the con-sistent rate is as high as 94%,which indicates that the proposed method is reasonable and reliable.Tradi-tional hydrological classification is of static partitioning based on single factor input,while the operationcharacteristics based classification is the dynamic partitioning based on multi-factor output.The method pro-posed in this paper can adapt to the complicated actual operation situation,and guide the choice of opera-tion mode more effective for hydropower stations,which has an important practical value.