Multi-objective System Reliability-redundancy Allocation in a Power Plant by Considering Three Targets

This paper addresses the overall system reliability-redundancy allocation problem (RRAP) of an overspeed protection system in a power plant. Generally, this type of optimization problem is considered as a single objective optimization problem subject to a set of nonlinear constraints. In the present work, the optimization problem is solved with a multi-objective approach rather than a single-objective one with three conflicting objective functions, namely the reliability, cost, and volume. A fast and elitist multi-objective genetic algorithm (NSGA-II) is implemented to identify the optimal solutions for the decision-maker.