# Firefly Algorithm Case Study

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Operational reliability is an essential criterion in the optimal operation of a distribution system. It must be considered in the optimization process. The reliability is quantified by computing the cost of failure. Every customer has interruption in his activity due to service disruption. This cost is measured and averaged over time as the customer interruption cost (CIC). CIC is a function of the total service interruption duration. It increases with time and rate of this cost is piece wise inversely proportional with time. Let the jth element of the system be a link in supplying power to the ith bus. Let this jth element have an average failure rate of kj failures per year. Let the average failure duration considering data for several years be rj minutes per year. Then the cost of service interruption for the customer at the ith bus considering a load of Li may be computed as below (47) where ri is the total service interruption duration at the ith bus…show more content…
3.3.5 Optimal Reconfiguration by Firefly Algorithm: The firefly algorithm is a nature enlivened algorithm for optimization and it is by all accounts more proficient than different algorithms like particle swarm optimization. As in nature, the firefly is pulled in to a flashing light created from alternate ones. This is to be mating by the same species or lethally luring by alternate species. One firefly tends to move toward the brightest flashing light and the brightness is shifted by the separation. Three idealized rules are used in firefly algorithm. The main is that all fireflies are unisex accordingly they are pulled in to the next depending just on the brightness. The attractiveness of a firefly can be figured as takes