Design and Development of Short Circuit Calculation Software for Ships

• Main Authors: Chun-Yu, Lin, 林俊宇
• Other Authors: Chun-Lien, Su
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/86110521700572187299

碩士 === 國立高雄海洋科技大學 === 輪機工程研究所 === 97 === Short circuit current analysis is used to calculate fault currents at different fault locations in ship electric power systems for determining proper protection devices. In the past, ship building corporations have a well-done computation program for the low voltage system based on the existing standard IEC 60363. However, in the recent years the new standard is released and medium voltage systems are increasingly adopted in ship electric power system designs. Therefore, the effectiveness of existing short circuit current calculation program is necessary to be modified and verified against the changes. The aim of this thesis is to develop a set of analysis program for short circuit current calculation based on the new standard IEC 61363-1. The main differences between standards IEC 61363-1 and IEC 60363 are compared and analyzed. Two practical ship electric power systems including low-voltage and medium-voltage schemes and used for the study and its performance is verified and compared with other available analysis softwares. The program can provide an accurate estimate in short circuit currents in ships and can also be used a basis for protection coordination design.