POWER FOR TELECOM TOWERS AND INFRASTRUCTURES:ENERGY WITHOUT BORDERS
With over 50 years of experience in the energy market, Visa SpA offers a range of products designed to meet the needs of the Telecommunication sector, one of the most dynamic sectors, subjected to continuous changes dictated by the constant evolution of technology. Step by step, Visa SpA supports its clients in choosing and defining the most suitable solution and application to address the clients’ needs. Our highly qualified technicians are at your disposal for the complete design of the electrical supply referring to new Telecommunication applications or to restore the existing ones, supporting the clients in the choice of the most proper genset and its specific equipment, as well as in the supply of the different components, such as control panels, battery boxes, rectifiers, BTS, etc.
CONFIGURATIONS EXAMPLES IN TELECOM SITES
1_AC DIESEL POWER GENERATOR USED AS STAND-BY TO THE MAINS In the present application, the BTS is supplied by the Mains and the Power Generator is used as standby to the Mains. If the power supply is interrupted or it does not respect the parameters set, the generator will be started automatically and, after having checked the electric and mechanic parameters, which must be within certain limits, it will feed the BTS. The Power Generator will work until the Mains returns or until the conditions of use will be restored.
2_GRID + POWER GENERATOR IN BACKUP MODE This application is a good solution for OFF GRID areas because the BTS is fed only by batteries charged by one or more Power Generators. In order to reduce the genset’s working hours and its related costs of management, the BTS loadings are fed by batteries. When those batteries run down, the generating set itself will recharge them. An additional Power Generator is generally added to the first one in mutual stand-by mode, in order to increase the system's level of safety. The control system has the function to evenly distribute the working hours among the Power Generator, so that all machines will be subjected to the same level of wear.
3_DC POWER GENERATOR (VARIABLE SPEED) THAT SUPPLIES A HYBRID POWER UNIT This application is suitable to feed transmission sites in remote areas, where no connections to the Mains are available (no grid area). In this case, the BTS is exclusively supplied by batteries charged by one or more Power Generators. In order to further reduce the system’s operating costs, where the BTS' electrical loadings are supplied by batteries, a DC Power Generator at variable speed is used, equipped with an alternator provided with PMG and an AC/DC converter, commonly used to charge the batteries at 48 VDC. If a AC generator works with a medium-low load, the use of it at variable speed in DC allows a reduction of fuel consumption that corresponds to a higher efficiency of the plant. A variable speed Power Generator works at a speed that grants the maximum efficiency depending on the electric power required, reducing the noise level and lengthening the maintenance intervals. An additional Power Generator is generally added to the first one in mutual stand-by mode, in order to increase the system's level of safety. The control system has the function to evenly distribute the working hours among the Power Generator, so that all machines will be subjected to the same level of wear.
4_DC POWER GENERATOR (VARIABLE SPEED) IN HYBRID POWER UNIT WITH COMBINATION OF GREEN SOLUTIONS. This application is suitable to feed telecommunication sites in remote areas, where there are no connections to the Mains, because the BTS is exclusively fed by batteries that have been charged by one or more Power Generator, with the support of green energy coming from renewable technologies. In addition to the benefits coming from the use of the Power Generator in DC mode, as previously mentioned, the system is also suitable to interact with one or more sophisticated technologies, capable of producing energy from renewable sources, such as solar and wind power. This can be considered an additional advantage in terms of reduction both of fuel consumption and of management costs. Since the system has been designed to be flexible, as well as "Customer Friendly," it allows that synergy to be activated at any time, even in those sites where at the time of their construction the system was not yet available. This solution ensures a low environmental impact.