Multi-timescale optimization and integrated operation and management of chemical/maritime systems = 화학/해운 시스템의 다중-시간스케일 최적화와 통합적 운영/관리법 및 사례 연구

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Integrated and coordinated decision-making across various value chains and levels of decision-making is one of major goal in process systems engineering. To ensure more sustainable and robust decision-making, effective integrated operation and optimization methodologies for multi-scale system is needed. Case studies on multi-time scale systems, which are oil refinery and industrial shipping respectively, are conducted in this study. In first case study, integrated operation between procurement planning and production scheduling in oil refinery is discussed. Alternative to the complete mathematical operation of two systems, two systems are closely related by quantifying effects of each crude on the gross margin of system, and apply them as weight parameters in objective function of procurement planning problem. In second case study, integration between tramp liner rental planning and vessel dispatch scheduling in industrial shipping system is discussed. Shipping problem is formulated in MP/MDP (mathematical programming/Markov decision process) combined structure where vessel dispatch scheduling problem is formulated in MP and tramp liner rental planning is formulated in MDP. The computability of scheduling MP is improved by simplified MILP with heuristic schedule decision, and MDP is solved by approximate dynamic programming (ADP) by linear value function approximation where basis function of approximated value function are selected by analysis of variance (ANOVA). Formulation and methodologies at two cases studies are simulated with historical operation data of each system.
Advisors
Lee, Jay Hyungresearcher이재형researcher
Description
한국과학기술원 :생명화학공학과,
Publisher
한국과학기술원
Issue Date
2019
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2019.2,[50 p. :]

Keywords

Multi-scale decision making▼auncertainty▼amathematical optimization▼amarkov decision process▼aapproximate dynamic programming; 다중 스케일 의사 결정▼a불확실성▼a수학적 최적화▼a마르코프 의사 결정▼a근사 강화 학습

URI
http://hdl.handle.net/10203/266366
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=843267&flag=dissertation
Appears in Collection
CBE-Theses_Master(석사논문)
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