Abstract
Reliability evaluation is widely uesd in electrical system which determines operation stability and environment safety of ships and vessels since it can discover potential safety hazard scientifically and accurately. Analytic hierarchy process (AHP) is an effective and useful method for reliability evaluation and indicator system establishment due to its simplicity and convenience. In this paper, a hierarchical structure of indicator system for ship’s electrical system is established based on AHP, and three judgement matrixes of the reliability, basic reliability and mission reliability are constructed. Then a calculation method of the maximum eigenvalue is introduced to solve the ranking weight vector of the three matrixes which can determine the weight of the indicator system for reliability evaluation of marine electrical system. Consistency index and its evaluation method are given for checking the judgement matrixes and conclusions. Finally taking a ship’s electrical system as an example, the above solutions were calculated and results show that APH can grantee the validity and accuracy of the establishment and application of the key indicator system. lower hierarchies and indicators could be considered due to the growing demand of the mission and service of ship’s electrical system.
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