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To maximize the benefits of an interbasin water diversion system (IBWD), an aggregation model and improved NSGA-II algorithm were constructed to establish operation strategies for water diversion and water supply. An aggregation model was constructed to aggregate multiple reservoirs into an equivalent reservoir which made the operation strategies for water diversion and supply easy to define. Then an improved nondominated sorting genetic algorithm II (NSGA-II) algorithm was developed by considering variables’ sensitivity to improve its search efficiency. Finally, the IBWD subsystem for water supply in China’s Shenzhen city was taken as a case study, and its operation strategies for different water supply scenarios were optimized by the improved algorithm. Simulation results demonstrated that the equivalent reservoir is an effective method to reduce the complexity of operational strategies, and improved NSGA-II algorithm has a higher search efficiency.
Xu et al. (Sat,) studied this question.