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Articles by Rattana Hormwichian
Total Records ( 2 ) for Rattana Hormwichian
  Anongrit Kangrang , Nutthapong Srikamol , Rattana Hormwichian , Haris Prasanchum and Ounla Sriwanpheng
  Background and Objective: Rule curves of reservoirs are necessary guides to operate reservoir system in the long run for both flood and draught control. The main objective of each rule curve depended on the characteristics of each reservoir. This paper proposed an alternative approach of a Firefly Algorithm (FA) to connect with the simulation model for searching optimal reservoir rule curves as the flood control area. Materials and Methods: Minimum average excess water and minimum frequency excess water were used as the objective functions for the searching procedure. The historic inflow, synthetic inflow data of 1,000 events and future inflow were used to evaluate efficiency of the flood control rule curves in showing situations of water shortage and excess water in term of frequency, magnitude and duration. The proposed model was applied to determine the optimal flood rule curves of the Nam Oon reservoir in the northeast region of Thailand. Results: The results showed that the patterns of the obtained rule curves were similar to the current rule curves. The optimal flood control rule curves were used to simulate the Nam Oon reservoir system for evaluating the situation of flood in long term operation. The results indicated that situations of water shortage and of excess water using optimal flood control rule curves from the proposed model were smaller than with current rule curves both for the present and future situations. Conclusion: The new obtained rule curves from the proposed FA model are better than the existing rule curves in decreasing flood situation.
  Anongrit Kangrang , Rapeepat Techarungruengsakul , Rattana Hormwichian and Ounla Sriwanpheng
  Rule curves of reservoir are necessary guides to operate reservoir system in the long run for both flood and draught control. This study proposes the alternative approach of Wind Driven Optimization (WDO) technique to connect with simulation model for searching optimal reservoir rule curves as the flood control area. Minimum average excess water was used as the objective function for searching procedure. The synthetic inflow data of 1,000 events and future inflow were used to evaluate efficiency of the flood control rule curves which showing by situations of water shortage and excess release water in term of frequency, magnitude and duration. The proposed model has applied to determine the optimal flood rule curves of the Nam Oon Reservoir in the Northeast Region of Thailand. The results have shown that the pattern of the obtained rule curves similar to the current rule curves. The optimal flood control rule curves were used to simulate the Nam Oon Reservoir system for evaluating the situation of flood in long term operation. The results have indicated that the situations of flood of the optimal flood control rule curves are smaller than theirs current rule curves both present situation and future situation.
 
 
 
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