梯级水电站能量复核中径流资料处理方法及应用

Runoff Processing Method of Energy Indexes Checking in Cascade Hydropower Stations

针对梯级水电站中各水库建设期不同步、水库建设引起流域产汇流机制变化、上下库调蓄影响及理论调节计算与实际运行方式不一致等问题,以万安溪—白沙梯级水电站能量复核为例,提出梯级入库径流资料插补、建库前后一致性分析与修正处理方法。结果表明,万安溪—白沙梯级水电站修正处理后的径流系列与未处理的径流系列计算得到的能量指标存在差异,修正后的保证出力相对于修正前的减少0.813%、多年平均电能增加0.540%。

Based on the energy indexes checking of Wananxi-Baisha cascade hydropower stations, to solve the prob- lems caused by the building of cascade hydropower stations, such as synchrony of construction period of cascade hydro- power stations, the change of runoff generating mechanism, the influence of reservoir regulating and the difference be- tween theoretic simulation and real operation, methods of runoff series interpolation, consistency analysis and series cor- rection are put forward in this paper. The result shows that there exists some difference between the corrected and non- corrected runoff series＇ value of Wananxi Baisha cascade hydropower stations. After corrected, the guaranteed output of Baisha power station reduces 0. 813 percent and the annual average energy increases 0. 540 percent.