How to minimize the loss of your photovoltaic power plant in extreme weather?

Simply think, in order to avoid flooding, increase the height of the photovoltaic power station bracket. But in reality it is not. Simply increasing the height of the bracket will definitely increase the cost and increase the instability of the power station. Moreover, the emergence of extreme weather, after all, from the current point of view is still a small probability. In order to not only increase the cost, but also effectively prevent the invasion of flood, the work of site selection design stage is important. First of all, in the stage of research and site selection, we must consider to avoid the selection of flood discharge area, flood detention area and flood discharge area.

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When designing, if the photovoltaic power station is built on the roof, it is necessary to fully consider the fixed load of the roof. If the power station is built on flat ground, geographical and geological factors should be taken into account, such as the orientation of the site, the degree of slope fluctuation, hidden dangers of geological disasters, the depth of water accumulation, flood water level, drainage conditions, etc. In addition, equipment selection is also very important, such as photovoltaic power plant equipment components, inverters, brackets, etc. At present, the most effective way is to add scientific drainage system.

For the general slope roof family distributed photovoltaic power station, due to its strong drainage capacity, there will be no excessive water accumulation, and the impact of rainstorm can be ignored. However, the power station with a flat roof is relatively low due to the installation of the bracket. Once the rainfall is too large, the battery board may be soaked by rain. Therefore, in order to prevent excessive water accumulation on the flat roof and form a small pond, a group of drainage systems can be added before the rainstorm to effectively drain the water.

In addition, after the storm, close to or contact with the photovoltaic inverter and solar panels and the connection of the power supply cable may be electric shock, flood-damaged solar panels may have poor insulation and other failures, contact with the risk of electric shock. During the recovery operation, hands-free operation shall be avoided, and anti-electric shock measures (rubber gloves and rubber boots, etc.) shall be taken to reduce the risk of electric shock.

High temperature, pay attention to ventilation

Recently, the dog days are approaching, and many areas have been hit by heavy rains and are facing the test of high temperatures. In addition to the quality problems of the components themselves, the editor has compiled several simple cooling methods for reference.

Temperature has a great influence on photovoltaic modules, and photovoltaic modules generally have three temperature coefficients: open circuit voltage, peak power, and short-circuit current. When the temperature rises, the output power of the photovoltaic module will inevitably drop! Therefore, temperature reduction is a factor that greatly affects the efficiency of the system. If the local temperature is too high, hot spots will be generated, which will affect the life of photovoltaic modules. Temperature is a very important factor affecting photovoltaic power generation. Therefore, although the sunshine is very good in summer, the ventilation and heat dissipation of the solar panels on the roof will not be particularly good, which will lead to a decrease in the power generation rate of photovoltaic panels. Attention should be paid to the ventilation of the back plate when installing roof photovoltaic. The bracket should be installed slightly higher so that the bracket is slightly away from the roof, which can ensure ventilation and increase the power generation.

For the installation location of photovoltaic power station is also exquisite, need to consider the installation location, installation orientation, installation angle, load requirements and arrangement and spacing.