Do you want to hand over the responsibility for the operation of your solar plant or . PV system to a professional? Our monitoring system provides all relevant. A Project Developer’s Guide to Utility-scale Solar Photovoltaic Power Plants ii. Figure 1: Project . Figure O&M Workers at a Large-scale Solar PV Plant. PV Operations and Maintenance. Version , March Period of convened by the National Renewable Energy Laboratory (NREL). The process was open to a Solar Access to Public Capital and the O&M Collaborative. .. training, and performance will support safe and reliable plant operation. Information such.

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Other common unscheduled maintenance requirements include but are not limited to:. Hot spots occur when a panel is shaded, damaged, or electrically mismatched and decrease power output.

It is also important to use the same type of metal in both the grounding system and in the protection equipment, so as to avoid corrosion. This is important to take into account in budgeting and investment planning. Panel orientation is an issue for static PV solar systems.

The module mounting assembly, cable conduits and any other structures built for the solar PV power plant should be checked periodically for mechanical integrity and signs of corrosion. The following table summarizes the degradation rates of solar panels made of different materials.

Preventative Maintenance PM includes the following activities:. The first level of such protection is the ground mount system itself, whereby the grounding system redirects the energy from the lightning into the ground and away from the panels. Sensors and controllers should be checked periodically for calibration and alignment.

From the key issues to contracts structure, all explained in brief. As in the case with panel cracking, not much can be done once the panel became discolored, hence the solar panels must be carefully operated and maintained.

Their serviceable life is up to 25 years, with 10 years of guaranteed performance. Usually, manufacturing companies that produce solar modules offer warranties if degradation rate exceeds certain amounts, for example, if it is more than 0. The alignment and positioning of the tracking system should also be checked to ensure that it is functioning optimally. This will include an inspection of support structure foundations for evidence of erosion from water run-off.


Depending on the material, the rate of degradation can vary. It can also be covered by warranties.

Feel free to leave a comment below. Compared to other power generating technologies, solar PV power plants have low maintenance and servicing requirements.

Maintenance can be broken down in two parts:. Contrary to the common misleading opinion, solar panels are most efficient when they gain maximum solar irradiance, not maximum temperature. Here, again, crystalline silicon stands out, as do conventional solar panels as opposed to concentrating photovoltaics that uses lenses and curved mirrors to focus sunlight on the solar cells.

First, panels might crack, even in the new once, if they have been damaged in the manufacturing process. The cracks may lead to the failure of panels or losses of optimal jaintenance. PV solar plant is a structure of considerable size, which is why some lightning protection is in order.

Even after the lightning energy has been discharged into the ground, it can still cause a power surge within the solar panels array, which is why a surge protection equipment is in order. This is called natural degradation, and is completely normal for all solar cells to experience once in operation. To solve this problem, all shading should be negated, and electrical connections should be optimized. In some cases it is not needed, if the grounding system is effective enough to reduce the lightning strike energy.

Everything You Need to Know About Operations & Maintenance (O&M) For Utility Scale PV Solar Plants

Generally, inverter faults are the most common cause of system downtime in PV abd plants. Note that copper conductor may be tinned, and that aluminium is not allowed powerr be buried into the soil. Visual discoloration is another common defect that reduces the amount of sunlight that penetrates into a solar cell.


As is clear from the table, Solar DAO PV plants are among the most robust ones, since the solar panels used are made of crystalline silicon which is characterized by the one of lowest annual degradation rates.

The degradation rate must be weighed against the cost and the utility of particular materials from which the solar models are made. Regular cleaning and maintenance will be enough in these cases. Once the PV solar plant has been builtit needs to be efficiently operated and carefully maintained.

Quite ppant contrary, high temperatures can actually damage solar panels, leading to the emergence of the hot spots. Become a member Sign in Get started.

The good news is that the higher quality panel, the less natural degradation. As a result, solar cells are less exposed to solar irradiation, and generate less energy. Natural degradation cannot be prevented, but maintenanfe be taken into account in the planning process. Finally, depending on the environmental conditions, the panels must be protected from wind, snow, and soiling in dusty areas.

The reason poant leads to loss of efficiency is because different color panels changes the wavelength of light that can be absorbed.

Everything You Need to Know About Operations & Maintenance (O&M) For Utility Scale PV Solar Plants

Even with a proper grounding system, a PV installation can still be at risk from lightning. Depending on the foundation, different forms of grounding can be used, as summarized in the following table provided by the Desert Research Institute:.

Since solar cells are attached in strings, just one hot spot can lead to multiple cells functioning poorly. Blocked Unblock Follow Get updates. Different components of PV solar plant may fail during the operation.

Similarly, tracking filetyoe also require maintenance checks. Thus, before turning to the actual process and stages of maintenance and operation, one needs to understand the issues involved in the functioning of a PV solar plant.