• Title, Summary, Keyword: Capacity Expansion

Search Result 615, Processing Time 0.041 seconds

Capacity Expansion Planning Model of Private Distribution Center Under Usability of Public Distribution Center (영업용 물류센터 사용하에서 자가 물류센터의 크기 확장계획 모형)

  • Chang, Suk-Hwa
    • Journal of the Society of Korea Industrial and Systems Engineering
    • /
    • v.33 no.1
    • /
    • pp.71-79
    • /
    • 2010
  • This paper addresses capacity expansion planning model of distribution center under usability of public distribution center. For discrete and finite time periods, demands for distribution center increase dynamically. The capacity expansion planning is to determine the capacity expansion size of private distribution center and usage size of public distribution center for each period through the time periods. The capacity expansion of private distribution center or lease usage of public distribution center must be done to satisfy demand increase for distribution center. The costs are capacity expansion cost and excess capacity holding cost of private distribution center, lease usage cost of public distribution center. Capacity expansion planning of minimizing the total costs is mathematically modelled. The properties of optimal solution are characterized and a dynamic programming algorithm is developed. A numerical example is shown to explain the problem.

Capacity Expansion Models for Optimum Investment Planning (최적(最適) 투자정책(投資政策)을 위한 시설(施設) 확충(擴充)(Capacity Expansion) 모델의 문헌적(文獻的) 고찰(考察))

  • Kim, Seung-Gwon
    • Journal of Korean Institute of Industrial Engineers
    • /
    • v.11 no.2
    • /
    • pp.141-154
    • /
    • 1985
  • The capacity expansion problem has been defined. Existing literatures on capacity expansion problems have been reviewed and unified under a structure of problem domain. The problem domain has been defined by three relavent coordinates; function or objective of the project, consideration of resource allocation, and consideration of project sequencing. Long range planning is of vital importance in setting up ultimately efficient capital investment plans to meet immediate demand increase. Simplified expansion sequencing example problems have been introduced and solved to help understanding of a solution scheme.

  • PDF

Agent-Based Modeling for Studying the Impact of Capacity Mechanisms on Generation Expansion in Liberalized Electricity Market

  • Dahlan, N.Y.
    • Journal of Electrical Engineering and Technology
    • /
    • v.10 no.4
    • /
    • pp.1460-1470
    • /
    • 2015
  • This paper presents an approach to solve the long-term generation expansion planning problem of the restructured electricity industry using an agent-based environment. The proposed model simulates the generation investment decisions taken by a particular agent (i.e. a generating company) in a market environment taking into account its competitors’ strategic investment. The investment decision of a particular company is modeled taking into account that such company has imperfect foresight on the future system development hence electricity prices. The delay in the construction of new plants is also explicitly modeled, in order to compute accurately the yearly revenues of each agent. On top of a conventional energy market, several capacity incentive mechanisms including capacity payment and capacity market are simulated, so as to assess their impact on the investment promotion for generation expansion. Results provide insight on the investment cycles as well as dynamic system behavior of long-term generation expansion planning in a competitive electricity industry.

Genetic Algorithm for Capacity Expansion Planning Model of the Distribution Centers in a Distribution System (물류시스템에서 물류센터의 크기 확장계획모형에 대한 유전알고리듬)

  • Chang, Suk-Hwa;Kim, Jae-Gon
    • Journal of the Society of Korea Industrial and Systems Engineering
    • /
    • v.32 no.2
    • /
    • pp.1-12
    • /
    • 2009
  • Distribution centers in a distribution system that consists of the distribution centers and retailers supplies products to retailers. At the present, although total capacity of the distribution centers are enough to supply total demand of retailers, capacity of the distribution centers need to be expanded to satisfy the demand of retailers in case that future demand of the retailers will be increased. Capacity expansion model in a distribution system is to determine the location and size of expansion distribution centers that minimize costs among given distribution centers. Transportation amount from distribution center to retailers also is determined. The costs factors are the capacity expansion costs of the distribution centers and the transportation costs from the distribution centers to the retailers. A model is formulated, and a genetic algorithm based solution procedure is developed. A numerical example is shown and the algorithm is analyzed through examples.

PORT EXPANSION SIMULATION MODEL

  • 노용덕
    • Proceedings of the Korea Society for Simulation Conference
    • /
    • /
    • pp.1-1
    • /
    • 1992
  • This paper presents a user-oriented port expansion simulation model that determines the future economic port capacity to meet the projected demand. The model consists of two parts; a physical impact simulation, and an economic impact simulation. The first part of the model simulates the effects caused by the port capacity expansion. The second part evaluates the port economics due to changes in the port capacity. The model was validated by applying it to the actual port expansion followed at the Port of Mobile, Alabama. A case study is then presented to demonstrate the capacity of the model with a coal handling port, the McDuffie Terminals at the Port of Mobile.

  • PDF

A Study on the Generating Capacity Expansion Characteristics in Jeju Island (제주지역 전력공급 대안과 특성분석)

  • Kim, C.S.;Rhee, C.H.
    • Proceedings of the KIEE Conference
    • /
    • /
    • pp.275-277
    • /
    • 2004
  • Although Jeju island Is connected with main network system by HVDC cable line, it's network assumes the form of independent system in an operating point of view. Therefore Jeju needs it's own independent capacity expansion planning. Continuos growth of demand and increase of antiquated plants in Jeju requires additional generating capacity. This paper analyzes characteristics of two alternatives which include it's own expansion of facilities and capacity expansion of network system for Jeju island. Furthermore this paper evaluates economic efficiency of those alternatives and analyzes long-term program of demand-supply of electricity.

  • PDF

A Case Study on the Effect of Damaged Expansion Joint for Safety Assessment of Highway Bridges

  • Kim, Kwang-Il;Chai, Won-Kyu;Lee, Myeong-Gu;Son, Young-Hyun
    • International Journal of Safety
    • /
    • v.9 no.2
    • /
    • pp.16-21
    • /
    • 2010
  • In this study, the variations of transformed impact factors and load carrying capacity of highway bridges measured from the state of expansion joint are evaluated. the field loading tests were performed on the highway bridge with damaged expansion joint to investigate the variation of the load carrying capacity. From the field loading tests in case that damaged expansion joint exist or do not exist, the static displacements and dynamic displacements were measured, and TIF were calculated, respectively. dynamic test is performed in order to estimate dynamic displacement and TIF according to the level of damage of expansion joint. From the results of TIF, the load carrying capacity of highway bridges with damaged expansion joint were estimated.

A Capacity Expansion Planning Model for Single-Facility with Two Distinct Capacity Type (두개의 차별적인 용량형태를 갖는 단일설비에 대한 용량 확장계획 모형)

  • Chang, Suk-Hwa
    • Journal of Korean Institute of Industrial Engineers
    • /
    • v.16 no.1
    • /
    • pp.51-58
    • /
    • 1990
  • A deterministic capacity expansion planning model for a two-capacity type facility is analyzed to determine the sizes to be expanded in each period so as to supply the known demands for two distinct capacity type(product) on time and to minimize the total cost incurred over a finite planning horizon of T periods. The model assumes that capacity unit of the facility simultaneously serves a prespecified number of demand units of each capacity type, that capacity type 1 can be used to supply demands for capacity type 2, but that capacity type 2 can't be used to supply demands for capacity type 1. Capacity expansion and excess capacity holding cost functions considered are nondecreasing and concave. The structure of an optimal solution is characterized and then used in developing an efficient dynamic programming algorithm that finds optimal capacity planning policy.

  • PDF

정수계획법을 이용한 프로젝트 확장순서결정에 관한 연구

  • Gang Seok-Ho;Kim Ji-Seung
    • Journal of the military operations research society of Korea
    • /
    • v.11 no.2
    • /
    • pp.15-22
    • /
    • 1985
  • Planning for the expansion of production capacity is of vital importance in many applications within the private and public sectors. This paper considers a sequencing expansion problem in which capacity can be added only at discrete points in time. Given the demand forecast of each period, capacity and cost of each expansion project, we are to determine the sequence of expansion necessary to provide sufficient capacity to meet the demand in all periods at minimum cost. This problem is formulated as a pure integer programming and solved by branch and bound method using Lagrangian relaxation. At first, simple sequencing expansion problem is presented, and in the latter part, extension to include precedence between projects is suggested.

  • PDF

On Determining the Size and the Timing of the Capacity Expansion in PV Module Manufacturing: Management Flexibility in Real Options Model (태양광모듈 생산 증설투자에 대한 의사결정: 실물옵션모형에 의한 경영유연성 가치 분석)

  • Kim, Kyung-Nam;SonU, Suk-Ho
    • New & Renewable Energy
    • /
    • v.7 no.2
    • /
    • pp.18-27
    • /
    • 2011
  • Management flexibility to adapt its future actions in response to altered future market conditions can expand the value of an investment opportunity by improving its upside potential without the change in the downside losses. Module manufacturers in solar industry continuously have to decide how much and when its production capacity should be expanded with regards to the demand in the global markets. Either over- or under-investment can cause sunk and/or opportunity costs to the module manufacturers. Option of exercising the additional investments only on favorable opportunities can increase total value of the investment. This paper analyzes the case which shows that the expansion of production capacity with more expandibility can have more value than the rigid plan of capacity expansion. The expansion option value is equivalent to KRW 38.286 billion, thus switching the negative NPV of the initial investment opportunity into the positive value. High volatility and the high growth in the cashflows as the major business features of the renewable energy provide condition where real options can play the crucial role in increasing the investment value as well as in determining the size and timing of capacity expansion in the course of capital budgeting process.