Reliability analysis and identification of critical components using Markov model

Gupta, Gourav; Mishra, Rajesh P.; Jain, Pooja

doi:10.1109/ieem.2015.7385753

Cited by 11 publications

(6 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first and most important step to implement an RCM procedure is to identify system critical components through a decision‐making process. Decision‐making techniques ranging from game theory, fuzzy analytical hierarchical process, reliability‐oriented criticality factors (CFs), Markov models, and minimal cut sets have been introduced so far to distinguish the critical components in power generation, transmission, and distribution systems. In this paper, a multiattribute decision‐making (MADM) approach in conjunction with a reliability‐driven CF is used to determine the weights of important RCM attributes and to identify the critical components, respectively.…”

Section: Introductionmentioning

confidence: 99%

A mathematical framework for reliability-centered maintenance in microgrids

Moradi

Vahidinasab

Kia

et al. 2018

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Summary In this paper, the central principles of reliability‐centered maintenance (RCM) and corresponding mathematical concepts for its implementation in microgrids are discussed. A systematic framework is suggested that exploits the fundamentals of multiattribute decision making to (i) evaluate the important features and failure attributes and (ii) effectively identify the microgrid critical components with their failure rates dynamically assessed at various time intervals. Lagrange multipliers of a budget‐constrained optimization formulation are suggested to be used to determine the desired values of system reliability indicators. The failure rates of critical components are efficiently determined over time through an exponential model that is empirically obtained via extracted condition scores of critical failure causes at multiple inspection times. A time‐varying benefit‐to‐cost ratio mechanism is designed via which the useful lifetime of critical components and the system economic benefits increase through timely maintenance in microgrids where an improved reliability performance can be realized. Finally, the proposed model is implemented in a real‐world scenario on a microgrid that is a part of the Tehran power distribution network. Extensive numerical results demonstrate the applicability and effectiveness of the suggested RCM model in microgrids.

show abstract

Section: Introductionmentioning

confidence: 99%

A mathematical framework for reliability-centered maintenance in microgrids

Moradi

Vahidinasab

Kia

et al. 2018

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

show abstract

“…The availability of a system is dependent on its MTTF and MTTR of the system. During the useful life of a system, failures are random, and its failure rate (λ) is assumed to be constant [15], [16], [21], [39]. Thus, the impact of imperfect repairs on the availability of the system is investigated while the failure rates of the system components are constant.…”

Section: B a Abmentioning

confidence: 99%

Reliability and Availability of Multi-Channel IEC-61850 Substation Communication Networks for Mission-Critical Applications

Mathebula

Saha

2020

JERA

View full text Add to dashboard Cite

The introduction of IEC-61850 digital-based Substation Automation System (SAS) eases implementation of elaborate schemes; however, its reliability and availability continue to be investigated for executing mission-critical applications. Independent repairable multi-channel systems with voting capability such as ‘one-out-of-two’ tripping schemes are often used for critical safety-related functions because the individual scheme channels hardly ever fail simultaneously. The system configuration enables the scheme to self-reconfigure when a link failure occurs in one of the channels, as well as being repairable with no interruption to the overall mission. This paper reviews the reliability and availability of evaluation methods to highlight their advantages and disadvantages. Structure-function modelling, as well as Markov process incorporating Systems Thinking and Mathematical Expectation are used to model the reliability of IEC-61850 based SCN to demonstrate the shortcomings of combinatorial methods in the evaluation of mission-critical systems where diagnostic capabilities of the systems and imperfect repairs should be considered. It is evident from the results of the study that system diagnostic capability and repair efficiency cannot be ignored for mission-critical applications for the reason that the simplifying assumptions of combinatorial analysis methods greatly over-state the reliability and availability performance of the system as observed from the results.

show abstract

“…In this study, it is assumed that the distribution company is under the performance‐based regulation (PBR) [33, 34]. The PBR is a regulatory approach that relies on financial incentives and disincentives to induce desired behaviour by a regulated electric company.…”

Section: Proposed Maintenance Policymentioning

confidence: 99%

A probabilistic reliability‐centred maintenance approach for electrical distribution networks

Ardabili

Haghifam

Abedi

2020

IET Generation Trans & Dist

View full text Add to dashboard Cite

Reliability improvement is a fundamental issue in electric distribution network (EDN) operation. In this regard, providing the most efficient maintenance policy can dramatically assist the electric utility companies in reducing the failure rate of EDN components. In the present study, a novel probabilistic reliability‐centred maintenance (RCM) approach is proposed in which the reliability level of the EDN components are evaluated according to the three‐state Markov model (MM). Using the MM, this study presents a trade‐off between the corrective maintenance and the preventive maintenance (PM) actions and finally determines the precedence of EDN components in PM financial resource allocation. Through the method presented in this study, the financial resources of the PM are economically allocated with regards to economic parameters such as customer outage costs and budget constraints. The efficacy of the proposed RCM approach is evaluated through the implementation of the RCM approach on bus number four of the well‐known Roy Billinton test system.

show abstract

Reliability analysis and identification of critical components using Markov model

Cited by 11 publications

References 3 publications

A mathematical framework for reliability-centered maintenance in microgrids

A mathematical framework for reliability-centered maintenance in microgrids

Reliability and Availability of Multi-Channel IEC-61850 Substation Communication Networks for Mission-Critical Applications

A probabilistic reliability‐centred maintenance approach for electrical distribution networks

Contact Info

Product

Resources

About