Reliable photovoltaic knowledge

1. Does the higher the temperature, the higher the power generation?

Many friends preconceivedly think that photovoltaics are just electricity generated by sunlight. If photovoltaics are installed in July and August every year, the power generation will definitely be huge!

In fact, this is not the case! (high temperature ≠ good light)

High temperature in summer does not mean high power of the power station, high temperature, strong humidity...instead, it will increase the load of the power station and bring many adverse effects. We all know that photovoltaic power generation is proportional to the light time and light intensity.

But light is only one of the factors that cause the temperature to rise, and it is not a direct factor. Therefore, we cannot equate high temperature with good sunlight, nor can we say that the higher the temperature, the higher the power generation of photovoltaic power plants.

In fact, the most suitable temperature is around 24 degrees, and the temperature has little effect on the photovoltaic panels. In the photovoltaic system, the photovoltaic components are afraid of heat, and the inverter is also afraid of heat. If the temperature is too high, the inverter will reduce its performance. Therefore, when installing the inverter, it is usually installed in a place with good ventilation and no direct sunlight.

2. How about the safety of household photovoltaics? Can it deal with lightning strikes, hail, and electric leakage?

Of course!

First of all, equipment circuits such as DC combiner boxes and inverters have lightning protection and overload protection functions. When abnormal voltages such as lightning strikes and electric leakage occur, it will be automatically shut down and disconnected, so there is no safety problem. Moreover, all metal frames and brackets on the roof are grounded to ensure safety in thunderstorm weather. Secondly, the surface of our photovoltaic modules is made of super impact-resistant tempered glass, which has undergone harsh tests (high temperature and high humidity) when passing the EU certification, and it is difficult to damage the photovoltaic panels in general weather.

3. If there is dust or garbage on the surface of the system, will it affect the power generation?

The impact is very small, because the photovoltaic system is related to the irradiance of the sun, and non-obvious shadows will not have a significant impact on the power generation of the system. Moreover, the glass of the solar module has a surface self-cleaning function, that is, in rainy days, the rainwater can wash away the dirt on the surface of the module. Therefore, the operation and maintenance cost of photovoltaic system is very limited.