Determining the optimal inspection rate of circuit breakers equipped with condition monitoring devices using new maintenance Markov model

Karimabadi, Ali; Hajiabadi, Mohammad Ebrahim; Kamyab, Ebadollah; Shojaei, Ali Asghar

doi:10.1002/2050-7038.12272

Cited by 8 publications

(3 citation statements)

References 35 publications

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“…De modo que existem vários tipos e modelos de disjuntores, onde seus níveis de tensão e meios de extinção podem variar conforme seus fabricantes sendo por: extinção a ar, extinção a óleo, extinção a gás, e outros, o que permite classificar suas características construtivas (Mamede, 2019;Karimabadi et al, 2020).…”

Section: Introductionunclassified

Aplicação Da Logica Fuzzy Para Priorização Da Manutenção De Disjuntores De Subestação De Enercia Elétrica

Elias,

Harakawa,

Bratifich

et al. 2023

COLLOQ EXACTARUM

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In electric power supply, in order for electric power substations to continue to operate, the maintenance of the electrical equipment present is of utmost importance. Currently there are several forms of preventive maintenance scheduling, where each power supply company adopts an existing method or develops a new method. To perform this work, we used the methodology of fuzzy logic that enables the calculation of reliability among the uncertainties, in order to classify the degree of criticality in the maintenance of circuit breakers that may present technical problems, performed a preventive maintenance, comparing with the method already used by the distribution company. The results found demonstrate greater accuracy than the model currently presented by the distributor. Although the results obtained are satisfactory, its use is only indicated as a support tool for teams and specialists. Since its factors still need to be adjusted, for a better predictability rate, where some samples the maintenance date is very close to the breaker failure date.

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Section: Introductionunclassified

Aplicação Da Logica Fuzzy Para Priorização Da Manutenção De Disjuntores De Subestação De Enercia Elétrica

Elias,

Harakawa,

Bratifich

et al. 2023

COLLOQ EXACTARUM

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“…Compared to the TBM method, this method increases the inspection intervals of the equipment and thus reduces the cost of maintenance [7][8][9][10][11]. Karimabadi et al [12] determined the smart inspection rate of equipment using condition monitoring effect on the CB. It is possible to measure the condition of the CBs and prioritize them in maintenance scheduling.…”

Section: Introductionmentioning

confidence: 99%

Prioritizing CBs Maintenance and Identifying Mandatory Maintenance at Higher Priorities

Aranizadeh

Shahrtash

Gholami

2022

International Transactions on Electrical Energy Systems

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Preventive maintenance (PM) based on condition monitoring of circuit breakers (CBs) provides proper and timely maintenance of CBs and reduces their failure rate as well as network costs. Condition monitoring of CB considers functional age (not natural age) of CB. This functional age depends on CB erosion. In this paper, CB condition assessment is obtained by monitoring the coil current and its duty cycles. Then, the maintenance priority between CBs of a power network is achieved using self-evaluation decision-making algorithm (SEDMA). This algorithm works in such a way that both the performance of CB is tracked by itself over time as well as compared to other CBs. First, this means the condition of the CB is measured by itself, and if the condition of the CB deteriorates over time, the CB will be given priority for repair. Second, the CB is compared offline with other CBs, and owing to the CB failures compared to other CBs, the priority of CB repair will be finalized. Then, using sensitivity analysis, it is determined whether the CB with the highest priority needs to be repaired or not, and the failure level of each CB will be specified. The case study in this paper concerns about two similar CBs. Also, the effect of improving the condition of the CB will be determined by performing maintenance operations. Eventually, it will be clear which CB has a higher priority for maintenance and whether this higher priority justifies the need for maintenance or not.

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“…Early diagnosis of a fault is helpful in minimizing the unwanted shutdown and reducing the cost of unplanned maintenance [3]. Hence, using predictive maintenance is useful in overcoming the downtime costs and increases the efficiency of systems [4,5]. The category of induction motor faults includes two main sets: mechanical and electrical faults.…”

Section: Introductionmentioning

confidence: 99%

Archives of Electrical Engineering

Aswad,

Jassim

2020

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The presence of an open-circuit fault subjects a three-phase induction motor to severely unbalanced voltages that may damage the stator windings consecutively causing total shutdown of systems. Unplanned downtime is very costly. Therefore, fault diagnosis is essential for making a predictive plan for maintenance and saving the required time and cost. This paper presents a model-based diagnosis technique for diagnosing an open-circuit fault in any phase of a three-phase induction motor. The proposed strategy requires only current signals from the faulty machine to compare them with the healthy currents from an induction motor model. Then the errors of comparison are used as an objective function for a genetic algorithm that estimates the parameters of a healthy model, which they employed to identify and localize the fault. The simulation results illustrate the behaviours of basic parameters (stator and rotor resistances, self-inductances, and mutual inductance) and the number of stator winding turn parameters with respect to the location of an open-circuit fault. The results confirm that the number of stator winding turns are the useful parameters and can be utilized as an identifier for an open-circuit fault. The originality of this work is in extracting fault diagnosis features from the variations of the number of stator winding turns.

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Determining the optimal inspection rate of circuit breakers equipped with condition monitoring devices using new maintenance Markov model

Cited by 8 publications

References 35 publications

Aplicação Da Logica Fuzzy Para Priorização Da Manutenção De Disjuntores De Subestação De Enercia Elétrica

Aplicação Da Logica Fuzzy Para Priorização Da Manutenção De Disjuntores De Subestação De Enercia Elétrica

Prioritizing CBs Maintenance and Identifying Mandatory Maintenance at Higher Priorities

Archives of Electrical Engineering

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