Decomposition–coordination model of reservoir group and flood storage basin for real-time flood control operation

Abstract

The research of joint optimization operation of complex flood control systems is still in the process of development. This paper introduces a decomposition-coordination model for solving the multiobjective optimization problem for real-time flood control operation in reservoir group and flood storage basin. The multi-objective programming is established for maximum safety of the reservoir group and minimum losses of flood storage basin, according to the real-time flood control requirements. Then, a third-order hierarchical optimization decomposition-coordination model is proposed for solving the multi-objective programming problem, based on the decompositioncoordination principle of large scale system theory. It takes advantage of an objective coordination method and model coordination method to accomplish global optimization and combines progressive optimality algorithm to solve the subsystem local optimization. Finally, the model is applied for simulating the storm flood in July 2007 in the middle reaches of the Huaihe River Basin in China. Results show that the proposed decomposition-coordination model can efficiently calculate the reservoir group optima release strategy and flood storage basin diversion process, and meet the safety discharge at the downstream control section.

A Comparative Analysis of Exceptional Flood Events in the Context of Heavy Rains in the Summer of 2010: Siret Basin (NE Romania) Case Study

“…The hydrometric stations also benefit from precipitation gauges [40,41] (Figure 2c). Heavy rains fall hourly, and they are recorded within 24 h, according to the Berg intensity scale [42][43][44][45]. Some of the data on precipitations were obtained from the regional meteorological stations within the Siret basin.…”

Review and prospect about water resources operation research

“…As a large interconnected system, reservoir group has complex structure and large scale, also, the addition of an objective function would result in the exponential increasing of the system dimension, but the DCMLSS can solve this problem smartly [48] . The basic though of the DCMLSS is to decompose the large system into several independent and interrelated subsystems that is as the first level called the lower system.…”

Multi-Objective Reservoir Optimization Balancing Energy Generation and Firm Power

“…The reservoir inflow in each time period has been chosen as the model input. With the reservoir release and inflow, the storage in each time period can be worked out according to Equation (6), and the water level and the tail water level can be derived from Equations (7) and (8). The power outputs are then calculated by Equation (9), and the objective functions in Equations (1) and (2) of each individual are finally evaluated.…”