GRID CONNECTED
A grid-connected system may be necessary for locations or situations where there is an electricity network, but the electricity is unreliable, has insufficient capacity, or is simply too expensive. In a grid-connected system, self-generated energy is used as much as possible, and power from the electricity network is only used to make up for the shortage, for example, during dark days.
Examples for which Green Power Supplies supplies grid-connected systems are mainly homes and companies in the Netherlands where cost savings must be made or where the grid connection is inadequate.
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Advantages of a grid-connected system are:
● Lower fixed costs: smaller connection is required.
● Lower flexible loads: less power is purchased.
● More sustainable: self-generated green energy is consumed immediately and stored in its own battery.
● More reliable: in the event of a mains power failure, the power comes from the battery, which is fed by solar panels and wind turbines
Solar panels:
There are two options for using solar panels, or a combination of these:
● Solar panels supply 230 Volt AC through a grid inverter.
● Solar panels supply 12-24-48 Volt DC through a DC charger.
For all power/energy that needs to be stored, the most efficient solution is to charge it with a DC charger directly to the battery. All the power that is immediately needed during the day does not have to be supplied via a battery and can, therefore, be supplied directly to the users by means of a grid inverter.
Depending on the project, the most ideal solution is a combination of both, which can work together easily and flawlessly in one system. If the batteries are full and there is still overproduction from the solar panels, this power is returned to the network operator.
Generators:
As an extra backup, a generator can always be connected to the system. This could be desirable in case of prolonged mains power failure. Here too, the running time of the generator/fuel savings can be minimized to 30% compared to normal consumption.
Wind energy:
Similar to solar panels, there are two choices:
● A windmill supplies 230 Volt AC through an AC converter.
● A windmill supplies 12-24-48 Volt DC through a DC charger.
For all the power that needs to be stored, the most efficient solution is to charge it with a DC charger directly to the battery. All the energy that is immediately needed during the day does not have to be supplied via a battery and can, therefore, be supplied directly to the users via a grid inverter.
Depending on the project, the most ideal solution is a combination of both, which can work together easily and flawlessly in one system. If the batteries are full and there is still overproduction from the wind turbine, this energy is returned to the network operator.
