동복·북촌 풍력발전단지 출력 변동 저감을 위한 ESS 용량 산정

Abstract

Many wind farms have been installed in Jeju. Wind power is, by nature, intermittent, so the power output from wind turbines may cause fluctuations in voltage and frequency to the power grid. The fluctuations in wind power output can be mitigated by use of an Energy Storage System (ESS). This paper analyzes the capacity of an ESS for mitigating the fluctuations in the output power of the 30 MW Dongbok·Bukchon wind farm. The actual data for the output power of the Dongbok·Bukchon wind farm from November 2015 to October 2016 were used. The factors affecting the fluctuation rate of the wind power output were analyzed. These are the wind and the status of the wind turbine generator (WTG). This paper proposes the capacity of the ESS, comprising a power conversion system (PCS) and a battery, needed to mitigate the fluctuations in output power from the Dongbok·Bukchon wind farm. The simulation was carried out by using the Matlab program using measured data from the Dongbok·Bukchon wind farm. The results indicate three situations in which the limit will be less than 1%, 5% and 10%, respectively.