A Techno-Economic Feasibility Analysis on LVDC Distribution System for Rural Electrification in South Korea

  • Afamefuna, David ;
  • Chung, Il-Yop ;
  • Hur, Don ;
  • Kim, Ju-Yong ;
  • Cho, Jintae
  • Received : 2013.11.04
  • Accepted : 2014.04.30
  • Published : 2014.09.01


Low voltage direct current (LVDC) distribution system is a suitable techno-economic candidate which can create an innovative solution for distribution network development with respect to rural electrification. This research focuses on the use of LVDC distribution system to replace some of KEPCO's existing traditional medium voltage alternating current (MVAC) distribution network for rural electrification in South Korea. Considering the technical and economic risks and benefits involved in such project, a comparative techno-economic analysis on the LVDC and the MVAC distribution networks is conducted using economic assessment method such as the net present value (NPV) on a discounted cash flow (DCF) basis as well as the sensitivity analysis technique. Each would play a role in an economic performance indicator and a measure of uncertainty and risk involved in the project. In this work, a simulation model and a computational tool are concurrently developed and employed to aid the techno-economic analysis, evaluation, and estimation of the various systems efficiency and/or performance.


DC distribution system;Techno-economic analysis;Annuity;Net present value;Sensitivity analysis;Power converters;Distribution system losses;Power outage cost


  1. M.W Gustafson and J.S Baylor, "The Equivalent Hour Loss Factor Revisited", in Proc. IEEE Power Engineering Society Winter Meeting New York, USA, January 31- February 5, 1988, PP. 1502-1507.
  2. F. Roos and S. Lindahl, "Distribution System Component Failure Rates and Repair Times-An Overview," in Proc. Nordic Distribution and Asset Management Conference, Espoo, Finland, August 23-24, 2004, pp. 1-6.
  3. T. A Short, Electrical Power Distribution Handbook, 2004: Electrical Power Engineering Series, CRC Press.
  4. E. Lakervi and E.J Holmes., Electricity Distribution Network Design, 1995: 2nd ed. London, Peter Peregrinus Ltd.
  5. D.G. Boice, R.J. Gursky and J.B. Trad "Cost of Electrical Power System Losses for Use in Economic Evaluations" IEEE Transactions on Power Systems, Vol. 4, No. 2, May 1989, pp. 586-591.
  7. D. Hur, "Economic Considerations Underlying the Adoption of HVDC and HVAC for the Connection of an Offshore Wind Farm in Korea," Journal of Electrical Engineering and Technology, Vol. 7, No. 2, pp. 157-162, July, 2012.
  8. R. Flanagan and G. Norman, Risk Management and Construction${\copyright}$ 1999: 4th ed. Blackwell Science.
  9. G. Seo, J. Baek, K. Choi, and B. Cho, "Modeling and Analysis of DC Distribution Systems," in Proc. IEEE Int'l Conference on Power Electronics - ECCE Asia, Jeju, Korea, May 30-June 3, 2011, pp. 223-226.
  10. P. Salonen, T. Kaipia, P. Nuutinen, P. Peltoniemi, and J. Partanen, "A LVDC Distribution System Concept," Proc. Nordic Workshop on Power and Industrial Electronics, Helsinki, June, 2008.
  11. P. Salonen, "Exploitation Possibilities of DC in Electricity Distribution," Master of Science Thesis, Lappeenranta University of Technology, June, 2006.
  12. Kivikko K., Makinen A., Verho P., Jarventausta P., Lassila J., Viljainen S., Honkapuro S., Partanen J. "Outage Cost Modeling for Reliability Based Network Planning and Regulation of Distribution companies" in Proc. IEE 8th International Conference on Developments in Power System Protection, 5-8 April, 2004, Vol. 2, pp. 607-610.
  13. V. Naakka, "Reliability and Economy Analysis of the LVDC Distribution System," MSc. Thesis, Tampere University of Technology, Feb., 2012.
  14. H. Lagland, "Comparison of Different Reliability Improving Investment Strategies of Finnish Medium- Voltage Distribution Systems," Monograph, Acta Wasaensia, 256, University of Vaasa, March, 2012.
  15. Z. Bozic, "Customer Interruption Cost Calculation for Reliability Economics: Practical Considerations," in Proc. Int'l Conference on Power System Technology 2000, Vol. 2, pp. 1095-1100, Dec., 2000.

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