Changes in Water Resources Systems:
Methodologies to Maintain Water Security and Ensure Integrated Management
(Proceedings of Symposium HS3006 at IUGG2007, Perugia, July 2007). IAHS Publ. 315, 2007, 41-47.
A
real-time dynamic flood prevention storage control model for Qingjiang cascade
reservoirs
WEI LI1, SHENGLIAN GUO1, A. D. AMPITIYAWATTA1,2, PAN LIU1 & FUQIANG GUO1
1 State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
2 Faculty of Agricultural Sciences, Sabaragamuwa University of Sri Lanka, Belihuloya, Sri Lanka
Abstract By considering real-time flood forecasting and storage compensate
capacity, a Real-time Dynamic Flood Prevention Storage Control Model (RDFPSCM)
was proposed and developed for cascade reservoirs. The RDFPSCM consists of two components.
The first component is a compensate operating module for obtaining the optimal
operation processes of all the reservoirs with the suggested flood prevention
storage constraints of the same iterative calculation; the second one is a flood
storage module for calculating the allowable minimum flood storage of each
reservoir according to the results of the other reservoirs calculated by the
first module. The successive approximation approach is used to coordinate the
differences between flood prevention storage constraints in the first module
and allowable minimum flood prevention storage in the second module. The merits
of the proposed methodology were demonstrated with an application to the Qingjiang
cascade reservoirs in Hubei Province, China. The application results show that
the RDFPSCM can obtain the optimal flood prevention storage operation rules and
enhance the efficiency of reservoir system management and flood water resource
utilization. Compared with the design rule, the proposed model can increase the
water resources utilization from 92.09% to 94.80%, and generate an extra 1.99 ×
108 kW·h hydropower (increase 2.74%) and save 9.29 × 108 m3
flood water resources (increase 34.79%) annually, without decreasing the design
flood prevention standards.
Key
words cascade
reservoir; compensate operation; decomposition and coordination; flood control;
successive approximation