Capacity Expansion Modeling of Water Supply in a Planning Support System for Urban Growth Management PDF Download

Author: Hyong-Bok Kim
Publisher:
ISBN:
Category : City planning
Languages : en
Pages : 432

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Book Description
A planning support system enhances our ability to use water capacity expansion as an urban growth management strategy. This paper reports the development of capacity expansion modeling of water supply as part of the continuing development of such a planning support system (PEGASUS: Planning Environment for Generation and Analysis of Spatial Urban Systems) to incorporate water supply. This system is designed from the understanding that land use and development drive the demand for infrastructure and infrastructure can have a significant influence on the ways in which land is developed and used. Capacity expansion problems of water supply can be solved in two ways: (1) optimal control theory, and (2) mixed integer nonlinear programming (MINLP). Each method has its strengths and weaknesses. In this study the MINLP approach is used because of its strength of determining expansion sizing and timing simultaneously. A dynamic network optimization model and a water-distribution network analysis model can address the dynamic interdependence between water planning and land use planning. While the water-distribution network analysis model evaluates the performance of generated network alternatives over time, the dynamic network optimization model chooses alternatives to meet expanding water needs. In addition, the user and capacity expansion modeling-to-generate-alternatives (MGA) can generate alternatives. A cost benefit analysis module using a normalization technique helps in choosing the most economical among those alternatives. GIS provides a tool for estimating the volume of demanded water and showing results of the capacity expansion models. A Planning Support System of Capacity Expansion of Water Supply (PSS/CEWS) provides a framework that facilitates planners, engineers, citizens, and decision makers in conducting coherent deliberations about water-distribution network expansion. Through the four stages of supply, demand, alternative generation, and evaluation, PSS/CEWS integrates basic planning preliminary design, and engineering design. Planners and engineers can prove their ideas in front of computers and communicate with each other with one language without using jargon.