Modeling multi-state system reliability analysis in a power station under fatal and nonfatal shocks: a simulation approach

• Published in: The International journal of quality & reliability management Vol. 38; no. 10; pp. 2080 - 2094
• Main Authors: Pourhassan, Mohammad Reza, Raissi, Sadigh, Apornak, Arash
• Format: Journal Article
• Language: English
• Published: Bradford Emerald Publishing Limited 01.11.2021; Emerald Group Publishing Limited
• Subjects: Capacitor banks; Energy storage; Failure; Failure analysis; Failure rates; Methods; Modelling; Power plants; Prediction models; Preventive maintenance; Process controls; Reliability analysis; Storage facilities; System reliability; Multi-state systems; Computer simulation; System reliability; Failure modes
• ISSN: 0265-671X; 1758-6682
• DOI: 10.1108/IJQRM-07-2020-0244

PurposeIn some environments, the failure rate of a system depends not only on time but also on the system condition, such as vibrational level, efficiency and the number of random shocks, each of which causes failure. In this situation, systems can keep working, though they fail gradually. So, the purpose of this paper is modeling multi-state system reliability analysis in capacitor bank under fatal and nonfatal shocks by a simulation approach.Design/methodology/approachIn some situations, there may be several levels of failure where the system performance diminishes gradually. However, if the level of failure is beyond a certain threshold, the system may stop working. Transition from one faulty stage to the next can lead the system to more rapid degradation. Thus, in failure analysis, the authors need to consider the transition rate from these stages in order to model the failure process.FindingsThis study aims to perform multi-state system reliability analysis in energy storage facilities of SAIPA Corporation. This is performed to extract a predictive model for failure behavior as well as to analyze the effect of shocks on deterioration. The results indicate that the reliability of the system improved by 6%.Originality/valueThe results of this study can provide more confidence for critical system designers who are engaged on the proper system performance beyond economic design.