The comparative analysis of systems of long-term electric power storage intended for sources of back-up and emergency power supply, as well as for power plants using renewable energy sources

This paper describes variants of using electric power accumulators of various types-lithium-ion and lead-acid storage batteries, flow-through redox storage batteries, and the hydrogen cycle-for the niche of back-up and emergency power supply sources designed for long periods of operation (8–72 h). The schematic diagrams are proposed, and, on the basis of data submitted by equipment manufacturers and designers, the comparative technical and economic analysis of these systems has been performed.