1 AIT Asian Institute of Technology

Incorporation of correlated flows into the linear decision rule

AuthorMostrales, Daniel S.
Call NumberAIT Thesis no. WA-83-8
Subject(s)Reservoirs--Linear programming
NoteA thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering, school of Engineering and Technology
PublisherAsian Institute of Technology
AbstractIn this study, the chance constrained linear decision rule (LOR) optimization model had been extended to allow explicit consideration of correlated inflows. It was shown that knowledge of t he streamflow process can be included in t he model to expand the information upon which responsible design choices a nd release commitments should be based. Some emphasis was given to the estimation of correlated flow distribution through the principal components analysis. HOUCK' s (L975) approach was used for having an objective of maximizing net economic efficiency benefits. For comparison, Houck' s model was applied to independent marginal flow distribution and correlated flow distribution. Two reservoir systems were considered in the present study. The problem was to determine the optimal operating policies for the existing reservoir, which take into account the stochasticity of the streamflows. Each of the reservoirs was independently taken as a single multiple purpose reservoir system. The objective function of the operation study is to maximize the expected annual benefits resulting from irrigation, power generation and flood control . The system is to be operated on a monthly basis. Incorporating correlated flows into the LOR generally yielded greater magnitudes of decision variables a nd , therefore, lesser amounts of release commitments. Ignorance of correlation structures between monthly flow volumes yields an overestimate of annual economic benefit, mainly due to relatively large computed freeboard volumes. Optimal values of decision variables were found independent of the change in benefit parameters for freeboard and water supply.
Year1982
TypeThesis
SchoolSchool of Engineering and Technology
DepartmentDepartment of Civil and Infrastucture Engineering (DCIE)
Academic Program/FoSWater Resources Research Engineering (WA)
Chairperson(s)Hoshi, Kiyoshi
Examination Committee(s)Suphat Vongvisessomjai ;Huynh Ngoc Phien
Scholarship Donor(s)US-ASEAN Scholarship and Research Program
DegreeThesis (M.Eng.) - Asian Institute of Technology, 1982


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