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Mathematical Problems in Engineering
Volume 2018, Article ID 9461823, 11 pages
Research Article

Minimal Cut Sets-Based Reliability Evaluation of the More Electric Aircraft Power System

1Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
2College of Energy and Electrical Engineering, Hohai University, Nanjing, Jiangsu Province 210098, China
3Shandong Light Industry Engineering College, Qingdao, Shandong Province 266112, China
4College of Information and Control Engineering, China University of Petroleum, Qingdao, Shandong Province 266580, China

Correspondence should be addressed to Yanbo Che; nc.ude.ujt@ehcby

Received 12 July 2017; Revised 4 December 2017; Accepted 25 December 2017; Published 28 February 2018

Academic Editor: Ivan Giorgio

Copyright © 2018 Yuancheng Zhao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The More Electric Aircraft (MEA) stands for the direction of aviation development in the new era, and the reliability of power systems on the MEA has attracted widespread attention. Based on the characteristics of MEA power systems, an equivalent method of electrical topology structure is presented in this article, and evaluation method is proposed which shows the reliability of the overall system with the reliability of specific nodes. Firstly, electrical topology structure of a MEA power system is converted into a network node diagram according to the proposed equivalent method. Then, the minimal path sets of specific nodes are obtained by the adjacent matrix algorithm, and the low-order minimal cut sets of disjointed are obtained. After that, the actual failure rate of components is converted to node failure rate, and the reliability of the overall system is evaluated by operational reliability indexes of specific nodes. Finally, taking the MEA A380 as an example, this paper compares and analyzes the reliability of AC loads, DC loads, and key loads to verify the validity and feasibility of the proposed evaluation method. This evaluation system can predict the weak points existing in the MEA power system, as well as providing theoretical support for maintenance schedule.