1. Photovoltaic power generation is to convert light energy directly into electrical energy. The key is light. The light at night is too weak, so it cannot generate electricity. Even if there is light on cloudy days, it cannot be used to generate electricity. Therefore, photovoltaic power generation must be equipped with batteries and inverters. At night and on rainy days, batteries and inverters are used to provide power.
2. Wind power also has this problem. When there is no wind or the wind is too low, batteries and inverters must be installed.
3. Theoretically, "photovoltaic power generation" uses optoelectronic devices to convert light energy into electrical energy. As long as a photon is incident, it converts the energy of the photon into electrical energy (emits the same energy as a Photon energy is equivalent to electrical energy; at night, as long as there are still photons (regardless of whether people can feel it) that shine on the optoelectronic device, there should still be electrical energy generated. However, when the number of photons is too small and the energy value is too small, it cannot even be measured. , we think it’s just because there is no electricity.
4. A calculator powered entirely by photovoltaic cells will work normally as long as the light intensity is sufficient at night.
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The impact of this proportion is as follows:
1. Wind power is usually stronger in spring and autumn, so the wind power generation will be relatively high in these two seasons. In summer and winter, due to the weakened wind, the wind power generation will be correspondingly higher. Decrease; photovoltaic power generation is higher in summer and sunny days, because the sunshine time is long and solar radiation intensity is high, while in winter and cloudy days, photovoltaic power generation will be reduced.
2. Wind power and photovoltaic. The volatility of power generation is mainly affected by weather conditions, such as changes in wind speed, cloud cover, etc., which will lead to instability in power generation.