碩士 / 國立高雄海洋科技大學 / 輪機工程研究所 / 95 / In contrast with traditional AC radial distribution systems, significant giants can be realized in terms of supply quality, weight, manning, and cost from a shipboard DC zonal electric distribution system (DC ZEDS). The DC ZEDS is predicted on having starboard and port DC buses feeding electrical zones delineated by watertight bulkhead compartments. The main bus DC voltage is stepped down within the zone and then converted to three-phase AC and lower voltage DC by power converters. Security assessment of the shipboard DC ZEDS under different fault conditions is important for real-time secure operation of the system. This thesis aims for security analysis of the shipboard DC ZEDS by probabilistic methodologies. The power converter operation and power generation and load variations are handled by AC/DC load flow and probabilistic load flow techniques to compute possible AC/DC load flow solution distributions, including bus voltages, phase angles, network flows, and power converter operation parameters. Stochastic contingency analysis of the system is also performed to compute the probability of the occurrence of the system insecurity and determine the critical contingency.
| Identifer | oai:union.ndltd.org:TW/095NKIM8484018 |
| Date | January 2007 |
| Creators | Chun-Teng Yeh, 葉駿騰 |
| Contributors | Chun-Lien Su, 蘇俊連 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 113 |
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