Design and Dynamic Performance Analysis of a Stand-alone Microgrid - A Case Study of Gasa Island, South Korea

  • Husein, Munir (School of Electrical Engineering, Kookmin University) ;
  • Hau, Vu Ba (School of Electrical Engineering, Kookmin University) ;
  • Chung, Il-Yop (School of Electrical Engineering, Kookmin University) ;
  • Chae, Woo-Kyu (Korea Electric Power Research Institute (KEPRI)) ;
  • Lee, Hak-Ju (Korea Electric Power Research Institute (KEPRI))
  • Received : 2017.03.02
  • Accepted : 2017.05.29
  • Published : 2017.09.01


This paper presents the design and dynamic analysis of a stand-alone microgrid with high penetration of renewable energy. The optimal sizing of various components in the microgrid is obtained considering two objectives: minimization of levelized cost of energy (LCOE) and maximization of renewable energy penetration. Integrating high renewable energy in stand-alone microgrid requires special considerations to assure stable dynamic performance, we therefore develop voltage and frequency control method by coordinating Battery Energy Storage System (BESS) and diesel generators. This approach was applied to the design and development of Gasa Island microgrid in South Korea. The microgrid consists of photovoltaic panels, wind turbines, lithium-ion batteries and diesel generators. The dynamic performance of the microgrid during different load and weather variations is verified by simulation studies. Results from the real microgrid were then presented and discussed. Our approach to the design and control of microgrid will offer some lessons in future microgrid design.


Microgrid;Economic analysis;Dynamic performance;Voltage control;Frequency control


Supported by : National Research Foundation of Korea (NRF), Korea Institute of Energy Technology Evaluation and Planning (KETEP), Kookmin University.


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