System power supply

A system power supply comprising: a first power transformer (3) connected to a first power generator configured to generate an electric energy which is allowed to flow in the opposite direction towards a grid (8) and is configured to perform the electrical energy transformation generated by the first power generator; one second energy converter (5) which is connected to a storage battery (4) and that is configured to charge and discharge the storage battery (4); and a third power transformer (7) which is connected to a second power generator, configured to generate an electric power is prohibited from flowing in reverse to the mains (8) and that is configured to make the electrical transformation of energy generated by the second power generator; wherein the system power supply is configured to supply power to at least one load (9) through the supply line (11) connected to the network, said electrical network (8) connected to one end of being upstream of the feed line (11) connected to the network, said load (9) connected to a downstream end of the supply line (11) connected to the network while being power transformers first to third ( 3, 5, 7) connected to the supply line (11) connected to the network in a way in which the first power transformer (3) is located on the side more upstream of the supply line (11) connected to the network, the system power supply comprises a first sensor (14) arranged at a position between a connection of the feed line (11) connected to the network and the first power transformer (3) and a connection line d and feeding (11) connected to the network and one of the transformers of the second power and the third (5, 7) located on the side more upstream of the supply line (11) connected to the network, first sensor being said (14) configured to detect the electrical energy flowing in reverse to the mains (8) via the feedline (11) connected to the network, and the second energy converter (5) is configured to control the loading and unloading of the storage battery (4) so ​​that the electrical energy flows in reverse to the mains (8) detected by the first sensor (14) is maintained at zero, and the third power transformer (7 ) is configured to control its output power to the power line (11) connected to the network so that the electrical energy flows in reverse to the mains (8) detected by the first sensor (14) is maintained in zero, where said one of the transformers of the second power and the third (5, 7) located on the side more upstream of the supply line (11) connected to the network is connected to the first sensor (14), transformers second energy and third (5, 7) they are configured to control charging and discharging of the storage battery (4) and to control the output power of the third power converter (7) to the supply line (11) connected to the network while that communicate with each other so that the electrical energy flows in reverse to the mains (8), detected by the first sensor (14) is maintained at zero.