Information technology and telecommunication Minimal cut sets and direct partial logic derivatives in reliability analysis

Information ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 175
Author(s):  
Daniele Codetta-Raiteri

Fault Trees are well-known models for the reliability analysis of systems, used to compute several kinds of qualitative and quantitative measures, such as minimal cut-sets, system failure probability, sensitivity (importance) indices, etc [...]


2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
Yanbo Che ◽  
Yuancheng Zhao ◽  
Jianmei Xu ◽  
Jinhuan Zhou

Minimal cut sets are the basis of reliability analysis using analytical techniques. At the present stage, minimal cut sets are mainly obtained by dealing with minimal path sets, which involves cumbersome steps and slower operational speed. The speed of reliability analysis is limited by that of calculating minimal cut sets. In consideration of the characteristics of microgrid, a hierarchical approach for fast calculating minimal cut sets is proposed in this paper. Firstly, an equivalent principle is proposed to convert topology structure into network node diagram; then grades of nodes are designated based on their original connection and the breadth-first search approach; afterwards, root-leaf matrices and selected matrix are created to specify the direction and order of the search. Next, all possible combinations of minimal cut sets are vertically traversed out by replacing root nodes with leaf nodes to achieve a more rapid access to minimal cut sets. Finally, taking the electrical structure of type A380 more electric aircraft as an example, mainstream methods are compared to show the correctness and advantage of our proposed method.


2014 ◽  
Vol 889-890 ◽  
pp. 591-594
Author(s):  
Richard Kuracina ◽  
Denis Šandor ◽  
Karol Balog

FTAe is software tool for Fault Tree Analysis in Microsoft Excel. This paper is focused on short description of created FTAe. A brief description of Fault Tree Analysis is in the first part of paper. The Structure, Logic and Minimal Cut Sets in Fault Tree analysis is described too. Next part of this paper is focused on the choice of algorithm for cut set calculation and brief description of structure of FTAe. Finally, advantages of FTAe software in Microsoft Excel are described in conclusions.


Sign in / Sign up

Export Citation Format

Share Document