가파도 계통의 분산형 전원설비 개선 방안 연구

Abstract

This paper attempts to present the improvement scheme of distributed generation facilities in the Gapado Island power system. Composing the power facilities which consider the grid code for renewable energy and analyzing effects on power system, the results would suggest the most suitable composition of power facilities in the Gapado Island. In the simulation, wind turbine systems and photovoltaic systems are controlled by PQ control methods while battery electrical energy storage system and diesel generator are controlled by CVCF control methods. To estimate the effectiveness of suggested scheme, three ways of simulation have been carried out by using PSCAD/EMTDC simulation program. 1) SCIGs connected to the Gapado Island power grid under islanding mode 2) SCIGs and STATCOM connected to the Gapado Island power grid under islanding mode 3) PMSGs connected to the Gapado Island power grid under islanding mode Both installing reactive power compensation STATCOM to SCIGs and installing PMSGs instead of SCIGs can offer method to improve power quality. These studies will be useful to design the composition scheme of distributed generation facilities in the isolated power generation area.