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Economic Evaluation Algorithm of Island Micro-grid for Utility and Independent Power Producer

전력회사와 발전사업자 측면에서 도서지역용 마이크로그리드의 경제성평가 알고리즘

  • Nam, Yang-Hyum (Dept. of Electrical Engineering, Korea University of Technology and Education) ;
  • Lee, Hoo-Dong (Dept. of Electrical Engineering, Korea University of Technology and Education) ;
  • Kim, Yu-Rim (Dept. of Electrical Engineering, Korea University of Technology and Education) ;
  • Marito, Ferrira (Dept. of Electrical Engineering, Korea University of Technology and Education) ;
  • Kim, Mi-Young (Dept. of Electrical Engineering, Howon University) ;
  • Rho, Dae-Seok (Dept. of Electrical Engineering, Korea University of Technology and Education)
  • Received : 2017.03.28
  • Accepted : 2017.06.26
  • Published : 2017.07.01

Abstract

Recently, regulation on carbon emissions has been strengthened according to the new climate change convention (COP21) held in Paris, and then Korea has decided to reduce CO2 emissions by 37% until 2030. As one of countermeasures, the government has energetically performed demonstration projects of island micro-grid including solar power, wind power and energy storage system. However, in order to smoothly introduce island micro-grid, it is a critical issue to carry out the economic evaluation for power utility aspect and independent power producer aspect. Therefore, this paper proposes economic evaluation algorithms of island micro-grid which are based on the present worth method, considering cost and benefit factors in the aspect of both sides. Firstly, in case of power utility this paper proposes algorithm to estimate a period of return on investment according to the introduction capacity of distributed generators replacing diesel generator. And also, in case of independent power producer, this paper proposes evaluation algorithm to estimate weighting factor of SMP and benefit rate based on break-even point related with cost and benefit. From a case study result on real island micro-grid model, it is confirmed that proposed algorithms are useful and practical for the economic evaluation of island micro-grid.

Keywords

References

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