查看文章

Cellular access networks need to reduce their dependence on the grid, with the twofold objective to decrease operational cost and guarantee self-sustainability in case of grid unreliability. For doing so, an interesting possibility is to use renewable energy generators. The power supply system considered here consists of small units that power individual Base Stations (BSs) and are composed of solar renewable energy (RE) generators combined with energy storage units to sustain the BS operation during night or low production periods. The simulation and design of the power supply system require the availability of simple, yet accurate, models of the RE production. In this paper, we propose a stochastic model of the daily RE production that is represented by a single random variable, characterized by the mean value and the variance, that multiplies a shape function describing the production in the timeframe of a …