Maintenance priorities in distribution transformers based on importance and risk

Honarmand, Mohammadmahdi; Haghifam, Mahmoud Reza; Barhagh, H. Doosti; Talebi, J.

doi:10.1049/cp.2013.0695

Cited by 5 publications

(4 citation statements)

References 6 publications

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“…The fitness function is presented in Equation (7). Herein, C CI and C ENS refer to the total cost of customer interruption and the total cost of energy not sold due to the outage occurrence in the EDN, respectively.…”

Section: Fitness Functionmentioning

confidence: 99%

“…The constraints burdened on the financial resources available for maintenance as well as the maintenance of budget evaluation complexity, necessitate researchers to conduct a number of fundamental researches. The reliability‐centred maintenance (RCM) was employed in the power plant's electrical network and then used in electric transmission and distribution networks after successful outcomes of conducting the RCM in the manufacturing industry [7]. In general, maintenance strategies can be classified into corrective maintenance (CM) and preventive maintenance (PM) The CM refers to the maintenance action(s) conducted after failure occurrence while the PM denotes the pre‐fault maintenance actions that are executed before fault occurrence in EDNs’ components.…”

Section: Introductionmentioning

confidence: 99%

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A probabilistic reliability‐centred maintenance approach for electrical distribution networks

Ardabili

Haghifam

Abedi

2020

IET Generation Trans & Dist

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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.

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Section: Fitness Functionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A probabilistic reliability‐centred maintenance approach for electrical distribution networks

Ardabili

Haghifam

Abedi

2020

IET Generation Trans & Dist

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“…However, too much maintenance may be costly while too little maintenance may result in catastrophic failure. So far during maintenance interventions that are actually made of interleaved manner, risk, with new ranges called "maintenance free" is not to carry out inspections regularly and more easily that a circuit breaker manifests its presence only in rare cases defect [6].…”

Section: Problem Descriptionmentioning

confidence: 99%

Toward an Integrated Approach of HV and MV Circuit-Breakers Optimization Maintenance Planning and Reliability Assessment: A Case Study

Mahmoudi

Barkany

Khalfi

2017

JERA

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This paper investigates technical and organizational tools to improve maintenance planning performances. Indeed, maintaining a high level of reliability and availability of a Medium Voltage electrical network protection system such as the Medium Voltage and High Voltage circuit-breaker and its numerical protection relay at a low operating expenses cost is one of the most critical and challenging tasks for MV electrical distribution network operators. This work has mainly two goals. Firstly, to propose an operating expenses budget function that evaluates the Planned Scheduled Preventive Maintenance Policy combined with a Condition-based maintenance fora real series-parallel multi-assets MV electrical distribution system with active redundancy under the reliability and the maintenance frequency visits of these components. Secondly, to implement an integrated genetic algorithm approach in order to look for the optimal perfect and planned preventive maintenance scheduling policy and condition-based maintenance that minimizes the maximum operating expenses cost of the entire system.The method determines the optimal schedule of preventive maintenance actions based on minimization both reliabilty and operating expenses costs. Conclusions and recommendations for practice are made on the basis of obtained results.

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“…the system reliability tends to fall down due to the impact of oil power factor in " Fig. 7" 7% to 15% weight [18] is provided depending on the level of oil power factor. Due to weights, the oil power factor shows less fluctuation and system reliability is in good shape when other sub-components are kept constant in " Fig.…”

Section: B) Reliability Calculations Using the Weighting Techniquesmentioning

confidence: 99%

Sub-system based reliability assessment for distribution transformer

Rahman

Aravinthan

2016

2016 Electrical Engineering Conference (EECon)

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Abstract-Implementation of Smart Grid into the power system has made our grid more robust and reliable. Due to integration of two-way, real time communication it is possible to monitor equipment through sensors. Continuous monitoring will help to predict the state of the equipment. Due to this fact and also to ensure the system performance, time based maintenance can be replaced by condition or reliability based maintenance. Contribution of this work is to identify the appropriate standards for to be used for the transformer subcomponents and develop appropriate Weibull distribution parameters for each subcomponent for a modified series-parallel topology of distribution transformer. This modification is done based on the available measurements and standards. Using the developed reliability model, Monte Carlo simulation was performed to evaluate the behavior of these parameters.

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Maintenance priorities in distribution transformers based on importance and risk

Cited by 5 publications

References 6 publications

A probabilistic reliability‐centred maintenance approach for electrical distribution networks

A probabilistic reliability‐centred maintenance approach for electrical distribution networks

Toward an Integrated Approach of HV and MV Circuit-Breakers Optimization Maintenance Planning and Reliability Assessment: A Case Study

Sub-system based reliability assessment for distribution transformer

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