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논문 기본 정보

자료유형
학술저널
저자정보
Seongil Kim (HD Korea Shipbuilding & Offshore Engineering) Byung Chul Sung (HD Hyundai Electric) Duck-Su Lee (HD Hyundai Electric)
저널정보
한국마린엔지니어링학회 Journal of Advanced Marine Engineering and Technology (JAMET) 한국마린엔지니어링학회지 제47권 제6호
발행연도
2023.12
수록면
434 - 440 (7page)
DOI
10.5916/jamet.2023.47.6.434

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The current trend in dynamic positioning vessels involves using closed-bus tie systems, which aim to be more efficient by using fewer generators. However, this new setup brings challenges due to the potential for a single fault to disrupt the entire power systems. To address these challenges, the paper presents a strategy to control diesel generators and meet strict requirements for handling faults. Using extensive factory test data, simulation models are developed for individual governor and exciter systems. These models have an error margin of about 2.1%, showing their good alignment with real-world situations. With these simulation models, a thorough analysis of system stability is conducted. This analysis checks if the governor and automatic voltage regulator settings, validated by factory tests, can restore the system to normal operation. The investigation reveals that the frequency response remains stable even with short-circuit faults. However, the voltage response does not meet the ship"s requirements. The paper investigates the reason behind this voltage problem due to an excessive integral controller gain value and implements changes to rectify it by adjusting controller parameters. By explaining the critical aspects of the voltage issue, the paper contributes to our understanding of strengthening closedbus tie systems on dynamic positioning ships. The findings emphasize the importance of careful generator control to maintain a reliable power system, especially during faults.

목차

Abstract
1. Introduction
2. Modeling of Governor Systems
3. Modeling of Excitation Systems
4. Transient Stability Study
5. Conclusion
References

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