Konferensartikel

A mobile telecommunication sector has experienced a rapid growth in Libya and Al-Madar Al-Jadid is one of largest companies providing services in this sector. Currently; PV systems are widely used for powering remote GSM communication stations in the country and number of Al-Madar Al-Jadid communication stations powered by such stand-alone PV systems was about 135 in 2009. A Simulink Matlab model was built to dynamically simulate the operation of the stand alone PV system powering one of Al Madar Al Jadid remote communication stations in desert conditions; taking into account variation of insolation and ambient temperature during a day. The results of mathematical modelling on the producible and produced power; charging and discharging battery power and the state of charge of the battery bank are in a good agreement with real experimental data recorded on the station with the use of a data-logger. Results obtained clearly indicated that the existing system; including PV panels and the electrical storage; is excessively large for the current electrical demand on the station and therefore could be reduced in the size by a factor of two.

Stand alone PV systems; Modeling stand alone PV systems; Powering mobile phone stations by stand alone PV systems