A deducing-based reliability optimization for electrical equipment with constant failure rate components duration their mission profile. (August 2021)

• Record Type: Journal Article
• Authors: Han, Zhong; Tian, Liting; Cheng, Lin
• Is Part Of: Reliability engineering & system safety. Volume 212(2021)
• Publication Date: 2021-08
• Subjects: Reliability optimization -- Deduced method -- Electrical equipment -- Topological structures -- Reliability increase; Reliability (Engineering) -- Periodicals; System safety -- Periodicals; Industrial safety -- Periodicals; Fiabilité -- Périodiques; Sécurité des systèmes -- Périodiques; Sécurité du travail -- Périodiques; 620.00452
• DOI: 10.1016/j.ress.2021.107575
• Languages: English
• ISSNs: 0951-8320

Abstract

Highlights: A deducing-based reliability optimization for electrical equipment is proposed. The deducing functionsare definitionby transformation, derivation and analysis. The deducing can determine the optimal in topology, component & redundancy methods. The given IICB data provides a useful help for researchers. The proposed method is applied to the IICB to guide designers. Abstract: Recently, with the rapid development of electrical industries, the R&D on electrical equipment has made a massive progress. However, high integration of multiple functions like isolationcircuit breaking, data collection and intelligent control results in low reliabilities. Therefore, a deducing-based reliability optimization for electrical equipment is proposed to enhance the reliability of electrical equipment. The Integrated Isolation Circuit Breaker (IICB), a classical device of power switch, is taken as the object in this research, and the reliability analysis is carried out by building the equipment description model of IICB, bringing forth the deduced method, and taking the constant failure rate components duration their mission profiles as indices for reliability increases. Next, on the basis of the deduced method, the unit to increase the system reliability can be determined. With the guidance of the above method, three kinds of reliability optimization schemes are studied, which are formed in accordance with the topologies of devices, component configurations and redundancy respectively. Finally, the comparing, analyzing and deducing of the three improving schemes are presented respectively. And an example is given to prove that the proposed method is feasible and can effectively improve equipment reliabilities, with valuable guidance for equipment reliability design as well.