However,when the SDP is applied to the optimal operation of multi-reservoirs system with multi-annual regulating reservoirs,the problems of "curse of dimensionality" will be aroused and the characteristic of uncertain regulated cycles can t be showed.

Stochastic Dynamic Programming (SDP) is a basic method to achieve optimal operation of reservoir, while which is applied to multi-reservoir containing multi-annual regulating reservoir with characteristic of unregulated cycle, the problem of the "curse of dimensionality" will be aroused and the characteristic of multi-annual regulating reservoir can t be showed.

Study on the water level at the end of year for carryover storage reservoir;

Based on the observation data of seepage quantity obtained from the dam of a annual storage reservoir and that of a pumped storage power station,the regularities and characteristic values are analyzed,the statistical model and regression model are established,and the affecting components are calculated by quantitative analysis.