Abstract-Establish reliability model of marine power station under different working conditions. On this basis, the reliability model database of ship power station system is established. Through the real-time online detecting the different working conditions of the marine power station, the corresponding reliability model of the database is called accordingly, and the reliability of the ship power station is evaluated online and in real time. The results of research have important reference value for the research on reliability and maintainability of marine power station.
Abstract:The methods of reliability analysis for parallel-redundant system are different from the traditional two-state system, according to multi-state reliability theory, the design of the three-state electrical parallel-redundant system was optimized, and a mathematical model of the reliable degree for the system was built. The formula of reliable degree was given by an example with usual three-state electrical parallel-redundant system. Researches indicated that it couldn't increase the reliability of the system even adopting the three-state electrical parallel-redundant system with more parallel-redundant branches because of the existence of short circuit failure. On the contrary, it would decrease the reliable degree of system with excessive branches. It differs from two-state system that the optimal redundancy is only 2 for the multi-branch redundancy design with auxiliary contacts of relay which often used in three-state electrical parallel-redundant system. The research results have universality, they are appropriate for electrical parallel-redundant system and the general three-state parallel-redundant system.
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