초전도 한류기 적용시 배전계통의 신뢰도 비용 평가

• Published in: 전기학회 논문지 P권, 63(4) Vol. 63; no. 4; pp. 266 - 270
• Main Authors: 문종필, Moon, Jong-Fil
• Format: Journal Article
• Language: English; Korean
• Published: 대한전기학회 01.12.2014
• Subjects: 전기공학; Power distribution system; Customer interruption cost; SFCL; Voltage sag
• ISSN: 1229-800X; 2586-7792

In this paper, the effects of superconducting fault current limiter (SFCL) installed in power distribution system on reliability are evaluated and analyzed. The fault current will be decreased in power distribution system with SFCL because of the increased impedance of SFCL. The decreased fault current will improve the voltage drop of the bus of substation. The voltage drop is an important factor of power distribution system reliability. In this paper, improvement of reliability worth is analyzed when SFCLs are installed at the starting point in power distribution system. First, resistor-type SFCL model is used in PSCAD/EMTDC. Next, typical power distribution system is modeled. Finally, when the SFCLs with impedance 0.5 [${\Omega}$] are installed in feeder, power distribution system reliability is evaluated. Also, the improvement effect of reliability worth including the effect of voltage sag is analyzed using customer interruption cost according to whether or not SFCL is installed.