Design for reliability: Remote communication system using solar power

A design algorithm for remote communication system was developed to meet an availability goal. The algorithm takes into account three modes of possible failure: individual component breakdown, energy deficiency (loss of load probability), and radio transmission loss. Least cost designs options are selected through tradeoffs among the three modes of possible failure. Design choices include component redundancy, more solar energy collection (photovoltaic) modules, more energy storage (batteries), higher radio power, larger antennas, and more reliable components. The algorithm was applied to the design of a satellite ground station system and radio network station systems in remote mountainous areas of Peru. Mean times to repair are long there. Nevertheless, a goal of 90% availability was set and achieved.