Integrated Interconnected Photovoltaic Systems
Investments in interconnected photovoltaic systems, also known as photovoltaic parks, have attracted the attention of thousands of investors.
These investments are eligible under the Development Law and PPC is also obliged to purchase the electricity produced by such installations at a very attractive price according to Law 3486/2006.
An interconnected system is permanently connected to the PPC grid in order to feed the energy it produces into the system. There are no storage mechanisms and such a facility must be designed to deliver the maximum annual electricity. This is achieved by a combination of several factors.
Key elements of photovoltaic investment
Site Selection for Photovoltaic Installation
The location of the parcel of land plays a particularly decisive role in the efficiency of an installation. The choice of site should be made very carefully as it is the only element in the investment that cannot be replaced or modified. The quality characteristics of the site will affect the performance for more than 20 years.
Photovoltaic Plant Component Selection
The choice of the basic materials (modules, inverters) to be used in the installation is also of great importance. Today the industry related to photovoltaic systems is experiencing a sharp and perhaps uncontrollable boom. Worldwide there are at least 250 manufacturers of photovoltaic panels. There are many parameters to consider for the right choice of photovoltaic panels.
The technology (sc-Si, mc-Si, a-Si) to be used, the performance guarantees, the output power tolerances, the manufacturing plant are just some of the elements one should take into account. There are also more than 150 voltage converter manufacturers with also varied technical characteristics that one should be aware of such as warranties, DC and AC power ratings, MPP voltage range and others. In addition, the correct combination of photovoltaic cells with inverters is vital for the efficiency of the installation.
Fixed or Mobile Systems?
One dilemma that the investor will have to face is the choice of how to support the photovoltaic panels. In addition to the fixed support systems which are permanently oriented to the South, there is also the choice of sunstars.
Solar trackers are systems in which panels can be placed and oriented by continuously moving in the direction of the sun so that the surface of the panels is perpendicular to the sun's rays. In this way, the production of electricity and thus the investor's income can be increased. Peripheral details for solar trackers.
Electrical Study
Also the electrical study and its application is something that should be done with seriousness and deep knowledge of electrical engineering. Any output power losses due to inadequate design or construction should be considered as lost profits by the investor and these losses will be sustained for 20 years; proper design and construction should be accompanied by a scientific approach and limiting losses in system performance is critical.
Our company undertakes the construction of photovoltaic power plants in order to connect them to the grid and sell the electricity to the PPC.
A typical integrated installation includes:
- The photovoltaic panels
- The voltage inverters
- The support bases of the frames
- The connection cables
- The DC connection boards
- The AC connection panels
- Measuring devices
- Lightning protection
- Scaffolding for the AC connection panels
- Internet monitoring system
- Fencing
- Perimeter lighting of the installation