Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Optimal Transmission Expansion Planning Considering the Uncertainties of the Power Market

  • Bae, In-Su (Dept. of Electrical Engineering, Kangwon National University) ;
  • Son, Min-Kyun (Dept. of Electrical Engineering, Hanyang University) ;
  • Kim, Jin-O (Dept. of Electrical Engineering, Hanyang University)
  • Received : 2010.01.19
  • Accepted : 2010.03.23
  • Published : 2010.06.01
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Abstract

Today, as power trades between generators and loads are liberalized, the uncertainty level of power systems is rapidly increasing. Therefore, transmission operators are required to incorporate these uncertainties when establishing an investment plan for effective operation of transmission facilities. This paper proposes the methodology for an optimal solution of transmission expansion plans for the long-term in a deregulated power system. The proposed model uses the probabilistic cost of transmission congestion for various scenarios and the annual increasing rates of loads. The locations and the installation times of expanded transmissions lines with minimum cost are acquired by the model. To minimize the investment risk, the Mean-Variance Markowitz portfolio theory is applied to the model. In a case study, the optimal solution of a transmission expansion plan is obtained considering the uncertain power market.

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References

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