지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2025.1
- 수록면
- 15 - 25 (11page)
- DOI
- 10.5370/KIEE.2025.74.1.15
이용수
초록· 키워드
오류제보하기
In South Korea's power distribution system, where 154 kV substations supply multiple feeders, faults on one feeder can cause voltage drops across other feeders on the same bus. These voltage drops pose significant risks to feeders with sensitive loads, such as semiconductor manufacturing facilities, which are vulnerable to voltage sags, leading to productivity and economic losses. To mitigate these issues, Under Voltage Relays (UVRs) are employed. However, coordinating UVR's operation on sound feeders with Over Current Relay (OCR) on the faulted feeder becomes more complex, especially with the application of Superconducting Fault Current Limiter (SFCL). This paper analyzes the impact of applying SFCL and induction generator (IG) on the operation of OCR and UVR in power distribution system. To address issues of UVR's maloperation and delay of OCR's operation, this study proposes adjustments to the pickup values of both relays. The results show that increasing the UVR's pickup value prevents maloperation, while lowering the OCR's pickup value reduces operation delay, improving the protection coordination between protection relays. Notably, with both SFCL and IG applied, the OCR's pickup value can be set even lower, enabling faster fault clearance. This study presents an approach for protecting sensitive loads by properly adjusting the UVR's settings on feeders vulnerable to voltage sags, thereby facilitating rapid system's recovery.
목차
Abstract
1. 서론
2. 배전계통 유도발전기 및 초전도 한류기의 구성
3. SFCL 및 IG적용에 따른OCR과UVR의동작특성과 보호협조 개선 방안
4. 결과 및 분석
5. 결론
References
참고문헌 (0)
참고문헌 신청이 논문과 함께 이용한 논문
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-151-25-02-092252455