전력품질 개선을 위한 2.5MJ급 SMES 적용 시뮬레이션

Wind power generation system (WPGS) causes frequency and voltage fluctuation due to wind speed variation. Superconducting magnetic energy storage (SMES) system can overcome the fluctuations through the fast response time of energy charging and discharging. The SMES system should be connected to the terminal of the WPGS for frequency stabilization. To demonstrate the effectiveness of SMES system for power quality improvement, Ulleung island power network was modeled in a real time digital simulator (RTDS). The RTDS-based simulation results of power quality improvement with SMES are investigated and discussed in detail.