Advantages and disadvantages of photovoltaic power generation

Advantages and disadvantages of photovoltaic power generation

The limitations of photovoltaic power generation as a new energy generation mainly include the following points:

1, the impact of climate on photovoltaic power generation. When the battery-free photovoltaic grid-connected power generation scheme is adopted, if the climate over the city changes greatly, the electricity load will fluctuate greatly. When the air quality over the city, such as air pollution, or visibility deteriorates, such as foggy days or sunny days, it will lead to a decrease in the online or real-time output of photovoltaic power generation.

2, from a geographical point of view, photovoltaic power generation equipment can only be combined with the installation and construction of buildings, called photovoltaic roof local power supply. If you leave the building to build photovoltaic power generation, it will greatly increase the cost or destroy the environment and ecology, thus greatly affecting the photovoltaic power generation capacity

3. Capacity transmission limitation. After solving the cost problem of photovoltaic power generation, due to the shortage of traditional motor rotation, high-power, high-voltage, long-distance transmission of electric energy from the desert area to the load center will bring new economic and stability problems to the AC grid. Inertia, governor, excitation system in photovoltaic power generation. Whether it is AC or DC high-voltage high-power transmission from the desert area long distance.

Light energy conversion efficiency is low. Compared with the conversion efficiency of traditional energy sources (such as mineral energy, oil, water energy, atomic energy, etc.), the conversion efficiency of photovoltaic energy is not ideal.

5 days and nights alternate. With the influence of the sun's irradiation Angle and the rotation of day and night, its power generation is also affected.

Compared to these limitations, photovoltaic power generation also has specific and unique advantages:

1, solar energy storage is huge, there is no risk of exhaustion.

2. Safe and reliable, no noise, no pollution emission.

3, not limited by the geographical distribution of resources, the advantages of building roofs can be used; For example, areas without electricity and areas with difficult terrain.

4, no need to consume fuel, no need to install transmission lines, can achieve local power generation and power supply.

5, high energy quality.

6. Users are emotionally receptive and aesthetically pleasing.

7, the construction period is short, the time required to obtain energy is short.

The photovoltaic industry is a sunrise industry based on semiconductor technology and new energy demand, and is the commanding height of the future global advanced industry competition. In recent years, the global photovoltaic market has experienced several ups and downs, and the overall trend continues to rise.