Uses Of Photovoltaics
A first way to classify the applications of photovoltaic solar energy is to distinguish the applications connected to the electrical network and the isolated installations.
The use of photovoltaic panels in isolated buildings is very useful since the investment needed to place solar panels on the roof of a farm, a chalet in the mountain or in a hotel in a secluded spot, is much less than what it would cost take the electric network there In this case, it has the advantage of being a renewable energy and, therefore, does not require fuel supply.
Photovoltaic applications in systems connected to the electrical network
The photovoltaic installations connected to the network are one of the latest and most innovative applications of photovoltaic systems. This application consists of the installation of photovoltaic panels and an inverter capable of transforming the energy supplied by photovoltaic solar panels and injecting it into the electricity grid.
The investor in this type of installation is the central core. The investor must have certain protections in situations that may occur in the electricity network (for example, network lag, network cut, voltage out of range).
The cost per kWh generated is usually greater than the energy generated by other energy generation systems. For this reason, in order to achieve the economic viability of these systems, the country must have legal regulations and financial aid lines, which offset the higher cost per Kwh generated.
Within the solar energy installations connected to the network, we include large solar installations. These are large areas of land with a large number of photovoltaic panels with the aim of generating large amounts of electricity.
The photovoltaic panels generate electricity in direct current from solar radiation. However, in solar installations connected to the network, this electrical energy must be passed to alternating current.
Photovoltaic applications in isolated systems
Photovoltaic systems for lighting
This type of photovoltaic applications can also be found in billboards, bus stops, street lights and tunnel lighting among other examples.
Signaling by photovoltaic energy
Photovoltaic solar energy allows the automation of headlights.
For aerial use, panels are being used to supply beacons and signposts on the slopes.
Lighthouses and buoys for maritime use.
Another great application is the signaling of roundabouts, curves, traffic signs, obstacles, etc. by means of high luminosity LEDs. The low consumption of the LEDs allows to realize a small-sized photovoltaic installation in these systems.
In this sense, we also find examples of hour and temperature indicators on public roads, at railway level crossings or on oil platforms.
Another great application, which has recently been added with great importance in road safety, is the signaling of roundabouts, curves, traffic signs, obstacles, etc. by means of high brightness LEDs, which allows a small-sized photovoltaic installation due to its low consumption.
Photovoltaic systems related to telecommunications
In the field of telecommunications, photovoltaic solar energy is used in the fields of mobile telephony, in radio and television repeaters. On the road, the SOS poles are powered by this type of renewable energy since it saves the work of getting them network power cables.
Radars, radiotelephony in general and for military or forest monitoring posts, rural telephony via satellite, are other examples in which solar energy is used to operate.
Rural photovoltaic electrification
Rural electrification currently has all the comforts that can be had in a conventional electrification system. This parity is due to the incorporation of new sine wave inverters. This system allows the use of any domestic appliance.
One of the most important applications currently is the electrification of small rural nuclei with a centralized system.
To manage the energy, an electronic energy limiting device is installed in each of the homes, programmed to be able to supply the user with a daily energy, but now the equipment has to be intelligent enough to increase the assigned energy , if the state of the battery is good, or otherwise if it is bad.
Applications of photovoltaic solar energy in agricultural and livestock farms
In livestock applications, photovoltaic solar energy is used to feed pumps to provide water in cattle troughs.
Photoelectric energy is also used on farms. Farms are often far from power distribution lines. The photovoltaic panels allow in these cases to electrify the farms (lighting motors, shearers, etc.).
In certain livestock farms, photovoltaic energy is used to feed milking systems and milk cooling. Even these systems are practical for the electrification of fences.
One of the most important applications in agriculture is direct-drive water pumping. This application highlights its simplicity of installation, its null maintenance and its total automation. These systems are composed of a field of photovoltaic panels, electronic equipment and the entire system of controls and sensors for pumping.
Another application to highlight in agriculture, has been the electrification of irrigation controls and electrovalves. This electrification has allowed a better distribution and saving of water, fundamentally systems based on drip irrigation or low pressure.
Last review: October 25, 2018