TY - JOUR N2 - Circuit Breakers (CBs) play an important role in ensuring the safe operation of protection systems. Condition Monitoring (CM) devices are widely implemented to extend lifetime, and to improve the maintenance quality. The present paper proposes a cost-based prioritization approach for CBs in a network equipped withCMdevices. To this end, a mathematical formulation is developed for the categorization and modeling of equipment failures based on their severity. This formulation quantifies the effect of the CM devices on the outage rate of the equipment. The reliability parameters of the substations 400/132/20 KV, including the failure rate, λ, average repair time, r, average outage time, U, substations, in two status of without CM and with CM of the CBs are calculated. These parameters are calculated implementing a minimal cut-set method. The outage rate of equipment with and without the CM devices is used to determine the effect of the CM devices on the reliability of the network. Finally, the prioritization of substations to install theCMdevices on the CBs has been investigated in terms of the Expected Energy Not Supplied (EENS) and costs of CM. To verify the effectiveness and applicability of the method, the proposed approach is applied to the CBs in the power transmission network in the Khorasan Regional Electricity Company (KREC) in Iran. L1 - http://www.czasopisma.pan.pl/Content/116234/PDF/art_12.pdf L2 - http://www.czasopisma.pan.pl/Content/116234 PY - 2020 IS - No 2 EP - 422 DO - 10.24425/aee.2020.133034 KW - circuit breakers KW - condition monitoring KW - outage rate KW - reliability KW - smart sensor A1 - Karimabadi, Ali A1 - Hajiabadi, Mohammad Ebrahim A1 - Kamyab, Ebadollah PB - Polish Academy of Sciences VL - vol. 69 DA - 2020.05.31 T1 - Prioritization approach for circuit breakers to equip with condition monitoring devices SP - 403 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/116234 T2 - Archives of Electrical Engineering ER -