Consideration of Ambiguties on Transmission System Expansion Planning using Fuzzy Set Theory

애매성을 고려한 퍼지이론을 이용한 송전망확충계획에 관한 연구

  • Tran, T. (Gyeongsang National University) ;
  • Kim, H. (Gyeongsang National University) ;
  • Choi, J. (Gyeongsang National University)
  • Published : 2004.11.12

Abstract

This paper proposes a fuzzy dual method for analyzing long-term transmission system expansion planning problem considering ambiguities of the power system using fuzzy lineal programming. Transmission expansion planning problem can be formulated integer programming or linear programming with minimization total cost subject to reliability (load balance). A long-term expansion planning problem of a grid is very complex, which have uncertainties fur budget, reliability criteria and construction time. Too much computation time is asked for actual system. Fuzzy set theory can be used efficiently in order to consider ambiguity of the investment budget (economics) for constructing the new transmission lines and the delivery marginal rate (reliability criteria) of the system in this paper. This paper presents formulation of fuzzy dual method as first step for developing a fuzzy Ford-Fulkerson algorithm in future and demonstrates sample study. In application study, firstly, a case study using fuzzy integer programming with branch and bound method is presented for practical system. Secondly, the other case study with crisp Ford Fulkerson is presented.

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