With the recent frequent occurrence of hot weather and temperatures exceeding 40°C in many places, many users will have a misunderstanding: with abundant sunshine in summer, is the power generation of PV power plants higher?
In fact, not, PV power station power generation by a variety of factors, including the more critical factors are irradiance and ambient temperature. Hot summer often accompanied by high temperatures, rather than high irradiance, the temperature characteristics of the solar module is a negative temperature coefficient, the module's power generation performance will be reduced as the temperature rises. Therefore, the peak power generation of PV power plants often occurs in late spring and early summer or late summer and early fall, when the ambient temperature is suitable and the irradiance is high, reaching the optimal conditions for PV power generation.
In addition, the solar inverter is usually installed outdoors, even in direct sunlight environment, high temperature environment in the summer inverter internal temperature will rise accordingly, the high temperature environment may also lead to over-temperature overload protection of the inverter, affecting the power station's power generation. Therefore, the heat dissipation performance of the inverter is one of the important factors affecting the power generation efficiency and service life, and the next step is to introduce how the inverter can better cope with the hot weather.
01.Ensure air circulation
Ensure smooth air circulation around the inverter, do not install the inverter in a small closed environment, if more than one inverter is installed in the same plane, need to ensure that there is enough distance between each inverter, which not only ensures that the inverter ventilation and heat dissipation, but also has enough operating space for later maintenance.
02. Avoid wind and sunshine
Secondly, although the protection level of the inverter is IP66 or IP65, reducing the chance of the inverter being blown by the wind, sun and rain can prolong the service life of the inverter. When the inverter is installed, you can choose to install it at the bottom of the module or under the eaves. If the inverter is installed on the color steel tile roof, it is recommended to install a sunshade synchronously, which can not only shelter the wind and rain, but also reduce the direct sunlight, lower the temperature of the inverter, avoid the over-temperature of the inverter due to load shedding, and safeguard the power generation efficiency.
03.Pay Attention to Post-Maintenance
After the installation of the inverter, you should also pay attention to the later maintenance, regularly clean the fan, fan cover or heat sink to ensure that the inverter's heat dissipation and cooling. Usually, inverter cooling will use intelligent air-cooling technology, the fan will intelligently adjust the rotational speed according to the internal temperature of the inverter, when the inverter is working in a high temperature environment, the intelligent air-cooling technology can effectively reduce the chance of load shedding, and ensure the stable operation of the inverter while also extending the service life of the fan.
In addition, the inverter is equipped with a fan failure alarm function, which enables the operation and maintenance personnel to receive alarm information in the monitoring background and quickly and precisely locate the faults, making it convenient for the operation and maintenance personnel to troubleshoot fan failures in a timely manner, reducing power generation losses and safeguarding power generation revenues.
