Hybrid powering system for stand-alone remote telecom applications

This paper presents the analysis of a hybrid power system (HPS) based on photovoltaic, battery and liquefied petroleum gas genset (PV/BAT/LPG) in remote telecommunications equipment of low power. From the various forms of supplying such equipment not connected to the public grid, a solution is proposed that combines three sources (one of them renewable energy), providing redundancy. It is procured to widen the availability. Then, this HPS system guarantees a continuous energy supply at reasonable cost, positive ecological effects and escapes of the total dependency of the resources of the hydrocarbons and the economic viability of some other energetic alternatives. A low cost and high reliability powering system is pursued with such a combination of energy sources. As an example for Germany, a HPS (PV/BAT/LPG) reduces a 50% of total cost in comparison with a PV stand-alone and LPG stand-alone, for 500 W equipment power. Then, HPS is oriented to be deployed in remote locations where connection to utility power is costly, inconvenient or unreliable.