tailieunhanh - ASSESSING AND OPTIMIZING THE OPERATION OF THE HOABINH RESERVOIR IN VIETNAM BY MULTI-OBJECTIVE OPTIMAL CONTROL TECHNIQUES

The purpose of this study was to investigate the operation of the Hoabinh reservoir in the Red River Basin of Vietnam, and assess the room for its improvement by application of system analysis and optimal control techniques. The study aimed at establishing a foundation for further research on inter-reservoir regulation of the Basin. Finally, this study provided a testing ground for developing and comparing di erent reservoir optimization methods. Chapter 1 and 2 provide a general and mathematical description of the socio-economic and physical system of the Red River Basin, including the three main objectives of hydropower production, ood control, and water supply. | POLITECNICO DI MILANO Dipartimento di Elettronica e Informazione RESEARCH DOCTORAL PROGRAM IN INFORMATION TECHNOLOGY ASSESSING AND OPTIMIZING THE OPERATION OF THE HOABINH RESERVOIR IN VIETNAM BY MULTI-OBJECTIVE OPTIMAL CONTROL TECHNIQUES Doctoral Dissertation of Xuan Quach Advisor Prof. Rodolfo Soncini-Sessa Tutor Prof. Carlo Piccardi The Chair of the Doctoral Program Prof. Carlo Fiorini Co-supervisor Dr. Andrea Castelletti Dr. Francesca Pianosi 2011 - XXIV Contents Abstract 3 Introduction 5 1 The Red River Basin and the Hoabinh reservoir 7 Physical and socio-economic system. 7 Important issues of the system . 8 Flood. 9 Water shortages . 11 Electricity. 13 Navigation and water pollution. 13 River bed erosion. 14 Climate change. 14 Transboundary issues . 15 Institutional and normative framework for Hoabinh operation . 16 Objectives of the study. 19 Conceptualization actions criteria and design indicators . 21 2 Modelling the Hoabinh water system 27 The Time Step. 27 Upstream catchments . 29 Data analysis. 29 The Hoabinh reservoir. 32 Characteristic curves of Hoabinh reservoir. 34 Rating curve of Hoabinh reservoir. 36 Mass balance equation of the reservoir. 39 Minimum instantaneous discharge function . 42 Maximum instantaneous discharge function . 43 Validation of the reservoir model. 44 Time constant of the reservoir. 46 Model of the hydropower plant. 48 The downstream river network . 51 Background. 52 The data . 52