| Title |
A Study on Simplified Optimal Capacity Planning Methodology of BESS and Diesel Generators for Isolated Microgrids Using Generation and Load Patterns |
| DOI |
http://doi.org/10.5370/KIEE.2019.68.5.614 |
| Keywords |
Isolated microgrid ; BESS ; Diesel generator ; Simplified optimal planning ; levelized operational cost ; Photovoltaic ; Wind power ; Renewable generation |
| Abstract |
The proper composition of BESS and diesel generators has become a very important topic for efficient operation in an isolated microgrid. In this paper, the simplified optimal planning methodology of BESS and diesel generators for isolated microgrids using generation and load patterns is studied. To simplify the optimal planning of the BESS and diesel generators considering operational cost of the microgrid, generation and load are classified into several representative patterns, and calculation of operational cost is simplified using the patterns to lead to the efficient optimal planning of BESS and diesel generators. The modeling of the objective function for determining operational cost simply by use of generation and load patterns is presented in addition to considering investment costs of BESS and diesel generators. Also, a new conversion method of operational cost to levelized operational cost is presented for analyzing more easily the effect of the load that increases constantly with fixed rate every year. The conditions of diesel generator for supplying electric power to emergency load and peak load, respectively, for the worst scenario are investigated in order to supply stable power. Through the case study for a isolated microgrid, the validity of proposed simplified optimal planning methodology for an isolated microgrid is evaluated. |