Photovoltaic is an Increasingly widespread technology in Italy, thanks to countless benefits offered in terms of reducing emissions harmful to environment and saving on Bills. One of most complex operations to face is connection of Photovoltaic System, Connection to Home Electrical Panel, and to external network for On-Site Exchange.
These are procedures carried out by Specialized Technicians, to guarantee conformity with system and maximum safety, however, it is important to know how this operation occurs for greater awareness. Let’s find out How Photovoltaic System is connected to general framework and to the network and what scheme is used.
Table of Contents
Connection Photovoltaic System To Grid
Once Company has installed and tested Photovoltaic System, it is necessary to proceed with connection to national electricity grid. Operation requires presence of Bidirectional meter, tool capable of managing both transfer of electricity produced to grid and withdrawal from outside to cover one’s energy needs.
Today most homes are equipped with new Electronic Electricity Meters, devices already set up for this type of use. In these cases, simply contact your manager, requesting configuration of electricity meter so that it is compatible with Bidirectional flow of electricity. Operation is carried out remotely, significantly reducing waiting times, however, it is important to send report quickly to avoid delays.
Connection to External Electrical network of Photovoltaic System allows you to take advantage of on-site exchange, system that provides for transfer of electricity produced in excess and not consumed. In this way, it is possible to obtain compensation from (Ground Support Equipment) GSE, credit that allows you to reduce the cost of electricity taken from network to cover your energy needs, especially when system produces less due to bad weather or low winter solar radiation.
Connection Photovoltaic System to External Electrical Network Includes:
- Photovoltaic Panels
- Inverters
- Bidirectional Counter
- Electricity Grid
How To Connect Photovoltaic System To Meter
Connection of Photovoltaic System to Bidirectional Meter involves two distinct procedures: Simplified one and ordinary procedure. Simplified procedure requires presence of an already active Low-Voltage electrical user, Photovoltaic System already connected to meter. Furthermore, system must have nominal power of no more than 20 kWp and no higher than available power (Generally 3.3 kW in Residential Settings).
In these cases, simply send connection request to your local distributor, who has 20 working days to inform relevant Municipality and request RDE (Rotating Detonation Engine) from the GSE (this is the operating regulation, insertion of data of plant in GSE database). Once Rotating Detonation Engine (RDE) has been completed, the distributor has a further 20 days to grant authorization for connection , therefore within 14 days it must indicate a date for connecting the system to Electricity Grid.
In absence of requirements for simplified procedure, ordinary procedure must be followed. In this circumstance it is necessary to obtain authorizations for system, for example authorization from Municipality in presence of landscape constraints. Subsequently, Connection request must be submitted to local distributor, sending series of documents such as cadastral plan of property and data relating to users. At this point timing is similar to that of simplified procedure.
Connection Of Photovoltaic System To General Framework Of House
At this point we see How Photovoltaic System is Connected to Electricity grid of Home, to directly use electricity produced by Photovoltaic Panels for domestic electricity consumption. Not all the electricity passes through bidirectional meter and is sold to national electricity grid, but part is used for self-consumption and used at time of production, or at later time in presence of storage system.
Connection of Photovoltaic to General Framework first involves connection of panels to Inverter, device that converts direct current electrical energy produced by system into alternating current suitable for direct use and transfer to grid.
Inverter, in turn, is connected to protection systems, therefore connection takes place with production meter which measures energy generated by system and bidirectional meter for on-site exchange.
Finally, Bidirectional meter is connected both to external network and to domestic electricity network, in this way it is possible to consume electricity self-produced by system, integrating it when necessary with electricity supplied by national electricity network. Connections are made by specialized technicians, with exception of Plug-and-Play systems, systems that can be connected directly to Home electrical network through dedicated power socket.
Here is Connection Photovoltaic System with Storage:
- Photovoltaic Panels
- Inverters
- Accumulation
- Electrical Protections
- Production Counter and Bidirectional Exchange Counter
- Electricity Network and Domestic Users
Connection Of Photovoltaic Inverter
An essential component of Photovoltaic System is Inverter, device that converts direct current into alternating current so that it is compatible with self-consumption and transfer to Grid. Inverter connection takes place between panels and production and exchange meters, generally as close as possible to modules to avoid current leakage.
Positioning of Photovoltaic Inverter can Take Place in Different places, For Example:
- In Boiler Room in case of String Inverter
- In Garage or in an Equally Sheltered Place
- In Attic or in Dedicated Technical Room.
Inverter can also be Installed outdoors, as long as it is protected from bad weather and direct sunlight, For Example when it is mounted directly on Photovoltaic Panels such as microinverter integrated into each module.
With Italian it is possible to take Benefits of advanced Photovoltaic Technologies, such as High-Performance Photovoltaic Panels with innovative half-cut Photovoltaic Cells. Furthermore, it is possible to obtain complete and tailor-made service, relying on expert professionals for consultancy, design, request for permits and authorizations, installation, testing, and connection to Electricity Grid of Photovoltaic System.