English
Traditional energy is limited both in the world and in China. China's primary energy reserves are far below the world average, accounting for about 10% of the world's total reserves. Solar energy is an inexhaustible renewable energy, with enough clean, absolutely safe, relatively popular, long service life, no maintenance, rich resources, huge economic potential and other characteristics. It plays an important role in long-term energy strategy. Compared with ordinary thermal power generation systems, the advantages of solar power generation are mainly reflected in the following aspects:
(1) No risk of fatigue. Resources are inexhaustible, and the solar energy shining on the Earth is 6,000 times greater than the energy currently consumed by mankind. And it's pretty widespread all over the planet. As long as there is light, photovoltaic power generation systems can be used, regardless of location, altitude and other factors.
(2) Safe and reliable, no noise, no pollution, absolutely clean (no pollution). The energy conversion process of photovoltaic power generation is very simple, that is, the direct conversion of photons into electrons. There is no intermediate process (such as thermal energy into mechanical energy, mechanical energy into electromagnetic energy, etc.) and mechanical movement, and there is no mechanical wear. According to thermodynamic analysis, the theoretical power generation efficiency of photovoltaic power generation is higher, up to more than 80%, and the technical development potential is huge.
(3) Not limited by the geographical distribution of resources, the roof of the building can be used; Such as areas without electricity, areas with difficult terrain. The power generation process does not require cooling water and can be installed on the desert Gobi without water. It can also be easily combined with the building to form an integrated building power generation system, which does not need to occupy a separate area and can save valuable land resources.
(4) There is no need to consume fuel and erect transmission lines to achieve local power generation and power supply.
(5) High energy quality, no mechanical transmission parts, simple operation and maintenance, stable and reliable operation. A solar power generation system can generate electricity as long as there are battery modules, and the wide application of automatic control technology can basically achieve unattended and low maintenance costs.
(6) Easy for users to accept. Stable and reliable working performance, long service life (more than 30 years). The life of crystalline solar cells can reach 20 to 35 years. Solar power generation as long as the design is reasonable and the shape is suitable, the battery life can be as long as 10 to 15 years.
(7) Short construction period and short energy collection time. Simple structure, small size, light weight, easy to transport and install. The construction period is short, the capacity can be determined according to the size of the power load, convenient and flexible, easy to combine and expand.
In recent years, solar energy utilization has become one of the fastest growing industries in the field of renewable energy. This is mainly due to technological advances and falling prices of solar panels.
