Research on real-time reliability evaluation method integrated with online fault diagnosis : subsea all-electric Christmas tree system as a cause study

Liu, Peng (author), Shen, Dagang (author), Cao, Jinfeng (author)

In the dynamic complex subsea environment, the degradation of the ocean engineering system is caused not only by a certain factor but by multiple ones. It is that when the failure rate of a certain component increases significantly, the declining trend in reliability of the entire system is well worth to discussion. This article contributes a real-time reliability evaluation method integrated with online fault diagnosis stage by using dynamic Bayesian networks. The subsea all-electric Christmas tree mechanical system is adopted to demonstrate the proposed methodology, the method realizes the identification of component fault types and the real-time reliability evaluation of the mechanical system under different component failure rates. The problem of inaccurate evaluation results caused by only considering component degradation rate or using sensor data as a single piece of evidence has been overcome. As a supplement to the method, by using mutual information to conduct sensitivity analysis on the reliability of the mechanical system, the importance of the basic events of each component on the reliability of the system is finally given. The proposed method provides important theoretical support for the maintenance of the tree, and can be extended to the reliability evaluation of general subsea production systems.

• Language: English
• Keywords: reliability evaluation, fault diagnosis, Bayesian network
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2022
• Number of pages: Str. 39-55
• Numbering: Vol. 68, no. 1
• PID: 20.500.12556/RUL-134719
• UDC: 004.7:681.518.3
• ISSN on article: 0039-2480
• DOI: 10.5545/sv-jme.2021.7328
• COBISS.SI-ID: 95281411
• Publication date in RUL: 27.01.2022

Record is a part of a journal

• Title: Strojniški vestnik
• Shortened title: Stroj. vestn.
• Publisher: Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
• ISSN: 0039-2480
• COBISS.SI-ID: 762116

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 07.12.2021
• Applies to: Accepted for publication

Secondary language

• Language: Slovenian
• Title: Raziskava metode za sprotno vrednotenje zanesljivosti v kombinaciji z diagnosticiranjem napak na primeru podvodnega električnega božičnega drevesa
• Keywords: električna božična drevesa, analiza zanesljivosti, Bayesovo omrežje, diagnostika napak, vrednotenje zanesljivosti, analiza občutljivosti

Projects

• Funder: Other - Other funder or multiple funders
• Funding programme: Shandong Provincial Natural Science Foundation, China
• Project number: ZR2021QE059

• Funder: Other - Other funder or multiple funders
• Funding programme: Key R&D Program of Shandong Province
• Project number: 2019GGX101020