EXPERT PARTICIPATION WITH OPTIMIZATION TECHNIQUE FOR IMPROVING OPTIMAL RULE CURVES OF RESERVOIR

R. Hormwichian, C. Chaleeraktrakoon, S. Patamatamkul, A. Kangrang

Abstract: Rule curves are monthly guideline for long-term reservoir operation. Often, they have not been used practical operation because of lacking expert participation. The expert operators were director on reservoir operation, senior operations engineer and technical operations engineer. The expert participation processes were interviewing, observation, focus group discussion and workshop. Their suggestions were performed for adjusting the final rule curves until the new adjusted rule curves accepted. Then these accepted rule curves were used to run with the 500 samples of synthetic inflow for evaluating the differential evolution with expert participation (Expert-CDE) technique. Comparison of the CDE model and the Expert-CDE model as well as the existing model was performed with these synthetic inflows to demonstrate the effectiveness of the developed method. The Lampao reservoir located in Kalasin province, in the northeastern Thailand were considered in this study. The result was found that the accepted rule curves had a lower frequency and smaller magnitude of water shortage than the existing rule curve, whilst the flood frequency of excess water release, the average excess water release, and the maximum excess water release were reduced. Compared to the differential evolution technique, the differential evolution with expert participation provided a similar pattern of rule curve but the new rule curves of differential evolution with expert participation were acceptable to operate reservoir.

Keywords: differential evolution algorithms; expert participation; optimization technique; reservoir rule curves

Date published: 2019-01-28