December 30, 2018

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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The cracks may lead to the failure of panels or losses of optimal efficiency.

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. As is clear from the table, Solar DAO PV plants are among the most robust ones, since the operaton panels used are made of crystalline silicon which is characterized by the one of lowest annual degradation rates. Since solar cells are attached in strings, just one hot spot filetyoe lead to multiple cells functioning poorly.

Note that copper conductor may be tinned, and that aluminium is not allowed to be buried into the soil. From the key issues to contracts structure, all explained in brief.

Feel free to leave a comment below. This will include an inspection of support structure foundations for evidence of erosion from water run-off. Natural degradation cannot be prevented, but must be taken into account in the planning process. As a result, mainteannce cells are less exposed to solar irradiation, and generate less energy. The good news is that the higher quality panel, the less natural degradation.

PV solar plant is a operatiln of considerable size, which is why some lightning protection is in order.

Finally, depending on the environmental conditions, the panels must be protected from wind, snow, and soiling in dusty areas. Once the PV solar plant has been builtit needs to be efficiently operated and carefully maintained.


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

To solve this problem, all shading should be negated, and electrical connections should be optimized. Regular cleaning and maintenance will be enough in these cases.

First, panels might crack, even in the new once, if they have been damaged in the manufacturing process. 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. Sensors and controllers should be checked periodically for calibration and alignment. This is important to take into account in budgeting and investment planning.

The degradation rate must be weighed against the cost and the utility of particular materials from which the solar models are made. Visual discoloration is another common defect that reduces the amount of sunlight that penetrates into a solar cell.

Contrary to the common misleading opinion, solar panels are most efficient when they gain maximum solar irradiance, not maximum temperature. This is called natural degradation, and is completely normal for all solar cells to experience once in operation. As in the case with panel cracking, not much can be done once the maintenande became discolored, hence the solar panels must be carefully operated and maintained.

Panel orientation is an issue for static PV solar systems.

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

It can also be covered by warranties. The reason it leads to loss of efficiency is because different color panels changes the wavelength of light that can be absorbed. 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.

All solar cells naturally degrade over time, regardless of the environment they are in. In general, the checks will include inspection for wear and tear on the moving parts, servicing of the motors or actuators, checks on the integrity of the control and power cables, servicing of the gearboxes and ensuring that the levels of lubricating fluids are appropriate.


Depending on the material, the rate of degradation can vary. Generally, inverter faults are the most common cause of system downtime in PV power plants. The alignment and positioning of the tracking system should also be checked to ensure that it is functioning optimally.

In some cases it is not needed, if the grounding system is effective enough to reduce the lightning strike energy. Hot spots occur when a panel is shaded, damaged, or electrically mismatched and decrease power output. Even with a proper grounding system, a PV installation can still be at risk from lightning.

It is also important operatoon use the same type of metal in both the grounding system and in the protection equipment, so as to avoid corrosion.

Usually, manufacturing companies that produce solar modules powsr warranties if degradation rate exceeds certain amounts, for example, if it is more than 0. Even after the lightning energy has been discharged into the ground, it can still powfr a power surge within the solar panels array, which is why a surge protection equipment is in order. Depending on the foundation, different forms of grounding can be used, as summarized in the following table provided by the Desert Research Institute:.

Similarly, tracking systems also require maintenance checks.

Preventative Maintenance PM includes the following activities:. Their serviceable life is up to 25 years, with 10 years of guaranteed performance.

Other common unscheduled maintenance requirements include but are not limited to:.

ppwer Different components of PV solar plant may fail during the operation. Become a member Sign in Get started. Maintenance can be broken down in two parts:.