Dynamic equilibrium strategy for drought emergency temporary water transfer and allocation management

- A dynamic equilibrium strategy for space and time conflicts of drought emergency.
- A optimization model to improves the operation of emergency water transfer.
- A hybrid-heuristic algorithm to solve bi-level dynamic multi-objective model.
- Application of the model in Henan Province in China under different circumstance.
- Five management recommendations about drought emergency water transfer are given.

SummaryEfficient water transfer and allocation are critical for disaster mitigation in drought emergencies. This is especially important when the different interests of the multiple decision makers and the fluctuating water resource supply and demand simultaneously cause space and time conflicts. To achieve more effective and efficient water transfers and allocations, this paper proposes a novel optimization method with an integrated bi-level structure and a dynamic strategy, in which the bi-level structure works to deal with space dimension conflicts in drought emergencies, and the dynamic strategy is used to deal with time dimension conflicts. Combining these two optimization methods, however, makes calculation complex, so an integrated interactive fuzzy program and a PSO-POA are combined to develop a hybrid-heuristic algorithm. The successful application of the proposed model in a real world case region demonstrates its practicality and efficiency. Dynamic cooperation between multiple reservoirs under the coordination of a global regulator reflects the model's efficiency and effectiveness in drought emergency water transfer and allocation, especially in a fluctuating environment. On this basis, some corresponding management recommendations are proposed to improve practical operations.