Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Capacity Optimizing method of Distributed Generators in Stand-Alone Microgrid Considering Grid Link-Characteristics

  • Han, Soo-Kyeong (Dept. of Electrical and Electronic Engineering, Sangmyung University) ;
  • Choi, Hyeong-Jin (Dept. of Electrical Engineering, Kwangwoon University & GS E&C Research Institute) ;
  • Cho, Soo-Hwan (Dept. of Electrical and Electronic Engineering, Sangmyung University)
  • Received : 2017.06.30
  • Accepted : 2018.03.19
  • Published : 2018.07.01
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Abstract

Recently, more power facilities are needed to cope with the increasing electric demand. However, the additional construction of generators, transmission and distribution installations is not easy because of environmental problems and citizen's complaints. Under this circumstance, a microgrid system with distributed renewable resources emerges as an alternative of the traditional power systems. Moreover, the configuration of power system changes with more DC loads and more DC installations. This paper is written to introduce an idea of a genetic algorithm-based solution to determine the optimal capacity of the distributed generators depending on the types of system configuration: AC-link, DC-link and Hybrid-link types. In this paper, photovoltaic, wind turbine, energy storage system and diesel generator are considered as distributed generators and the feasibility of the proposed algorithm is verified by comparing the calculated capacity of each distributed resource with HOMER simulation results for 3 types of system configuration.

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