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커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2025.4
- 수록면
- 86 - 102 (17page)
- DOI
- 10.5293/kfma.2025.28.2.086
이용수
초록· 키워드
오류제보하기
As variable renewable energy (VRE) has experienced rapid growth in recent years, its intermittent nature creates a significant demand for effective energy storage solutions. There has been increasing interest in small- and medium-sized pumped-storage hydropower stations with capacities under 100 MW. These systems are more environmentally friendly and are generally more accepted by communities compared to traditional large-scale projects. This makes them both practical and cost-effective options for storing variable energy.
T his study focuses on developing an innovative design for a high-performance 1 MW-class pump-turbine system. This system represents a significant initial step toward localizing the primary components of pumped-storage hydropower systems in Korea. The design process utilizes a direct optimization technique based on a three-dimensional inverse design method and a multi-objective genetic algorithm. The new system was optimized to enhance efficiency and mitigate cavitation, one of the major undesirable phenomena in turbomachinery. The stability of the pump-turbine system structure was ensured through finite element method (FEM) analysis, enabling it to withstand the severe operating conditions of the system.
Compared to the performance results of the baseline model (Design 1) based on three-dimensional inverse design method, the newly developed pump-turbine system (Design 2) has significantly expanded its operational range in both turbine and pump modes due to enhanced cavitation performance during partial and overload conditions. The newly developed 1 MW-class pump-turbine system achieved over 80% efficiency even at partial loads exceeding 60%, with a maximum efficiency of 91.2% in pump mode and 90.5% in turbine mode. Notably, energy savings are realized through reduced power consumption, thanks to the remarkable performance improvements in pump mode.
T his study focuses on developing an innovative design for a high-performance 1 MW-class pump-turbine system. This system represents a significant initial step toward localizing the primary components of pumped-storage hydropower systems in Korea. The design process utilizes a direct optimization technique based on a three-dimensional inverse design method and a multi-objective genetic algorithm. The new system was optimized to enhance efficiency and mitigate cavitation, one of the major undesirable phenomena in turbomachinery. The stability of the pump-turbine system structure was ensured through finite element method (FEM) analysis, enabling it to withstand the severe operating conditions of the system.
Compared to the performance results of the baseline model (Design 1) based on three-dimensional inverse design method, the newly developed pump-turbine system (Design 2) has significantly expanded its operational range in both turbine and pump modes due to enhanced cavitation performance during partial and overload conditions. The newly developed 1 MW-class pump-turbine system achieved over 80% efficiency even at partial loads exceeding 60%, with a maximum efficiency of 91.2% in pump mode and 90.5% in turbine mode. Notably, energy savings are realized through reduced power consumption, thanks to the remarkable performance improvements in pump mode.
목차
ABSTRACT
1. 서론
2. 펌프 터빈 시스템 설계
3. 수치 해석 및 결과 분석
4. 결과 및 고찰
5. 결론
References
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