A grid-connected photovoltaic system is connected to the public electricity distribution network (STEG).This grid-connected system is the renewable energy system whose technical operation is the simplest because no preventive maintenance is necessary for low-power installations.
The photovoltaic installation connected to the network consists of:
- Photovoltaic panels coupled in series and/or in parallel
- DC direct current protection electrical box
- Inverter that transforms direct current into alternating current with a frequency of 50HZ
- AC alternating current electrical protection box
- AC & DC Wiring Kit
- Aluminum metal structure
- Bidirectional counter
Operating principle
Commonly, the modules are installed on the roof section which will be most exposed to the south. They can also be integrated into the structure of the building, on the roof, on the facade, as sunshades, etc.
Electricity is produced in direct current by the modules, then transformed into alternating current by a small electronic device called an inverter.
The electricity, produced and injected into the network, is counted by an electricity production meter previously installed by the STEG network manager. It is purchased at a rate set by the government.