When there was no photovoltaic power station in the past, I always thought that there was more direct sunlight in summer, and the more solar energy the photovoltaic panels absorbed, the more electricity the power station would generate. Later, when a photovoltaic power station was installed at home, I realized that “the bigger the sun, the more power generation” turned out to be a Misunderstanding!
Many people who do not know photovoltaic power plants or do not have a deep understanding of them have always thought that "the light time in summer is long and the light is sufficient, and the power generation capacity of the power station must be large". But in fact, if the power generation of distributed photovoltaic power plants is sorted by season, they are spring, autumn, summer, and winter.
Although there is plenty of sunshine in summer, high temperature, high humidity, heavy rainfall, and relatively frequent severe weather in summer, these summer-specific factors will have a certain impact on the power generation capacity of the power station.
The daily power generation of a photovoltaic power station has a certain relationship with the local sunshine intensity, the orientation and installation inclination of the modules, and the seasonal weather conditions. In summer, the factor that affects the power generation of photovoltaic power plants is high temperature. High temperature will affect the components, and it will also affect the inverter. The peak temperature coefficient of photovoltaic modules is about -0.38~0.44%/℃, that is, the higher the temperature, the lower the power generation of photovoltaic modules. Theoretically, for every degree of temperature increase, the power generation will decrease by about 0.44%. Although compared to the electricity generated by the power station every day, the loss is only a "trivial" point, but over time, the loss of electricity will be more. Moreover, in addition to affecting the power generation, the continuous high temperature can also lead to equipment downtime and high temperature fires in severe cases. Of course, such a situation is unlikely to happen, but it does not rule out unexpected situations. The temperature in spring and autumn is suitable, photovoltaic power stations are rarely affected by bad weather, and the power generation of the power station during the day will be more stable and sufficient.