Optimization of substation equipment maintenance by considering equipment deterioration

Substation Maintenance Optimization By Considering Ageing Equipment

“…The Optimization function based on the minimization of cost of energy not supplied due to load point outages and the total substation maintenance cost of equipment [10] is given below: This method is based on the direct estimation of cost based on the substation availability and the maintenance cost. The objective function is formulated using the direct maintenance cost as an independent variable along the cost of energy not supplied.…”

“…In the above reported formulation [10], load point probability indices are estimated using the minimal cut set method but the load point criticality is not being considered. In addition to it, in the multi-state Markov model for equipment maintenance did not considered various states like the equipment inspection, different types of maintenance, failures, predictive replacement and human errors.…”

Lifetime efficiency index model for optimal maintenance of power substation equipment based on cuckoo optimisation algorithm

“…A PDF of a continuous random variable is a function that describes the relative probability for this random variable to take on a given value. Some of the important measures of maintenance productivity are as follows that the equations in Sections 2.2.1-2.2.4 are introduced in [31,32]. Section 2.2.5 is defined in this paper.…”

“…In the statuses of failure and maintenance, the equipment cannot be used, but in the deteriorating state the equipment can still be used although it was deteriorated. Previous research has suggested several methodologies for failure and maintenance model of substation equipment, such as multistate Markov [32] and Weibull [30] models. In this paper, the statuses of failure and maintenance of equipment are modelled by the Weibull distribution as follows.…”