Low-energy power system for base transceiver station

摘要

This paper presents a comparative study of power supply systems for mobile phone stations. Base transceiver stations (BTS) are situated in South-eastern Algeria, mainly at neighboring of Ouargla city. In order to rationalize the energy consumption, three cooling methods are examined. The first is insured by mono-bloc air conditioning and a diesel driven generator supplies the station where the energy consumption is calculated by using energy bills. In the second method, the evaluation of the cooling energy is based on degree-days calculation and the net transceiver consumption is added. But, for the last approach, a compounded renewable energy system is adopted which according station type includes; photovoltaic (PV) field, dry batteries, Earth-air heat exchanger and solar chimney. The obtained results show a significant energy consumption fall due essentially to cooling energy decrease. Indeed, for insuring the operating of pylon station type during all year, we need only small capacities of PV panel. In addition, long term prospection study with trend and voluntary models indicates that the payback of renewable energy investment will be carried out at least in five years for standalone station.