What are the prospects of solar power generation and what are the advantages of solar power generati

Developed countries have long proposed possible implementation plans for future solar power generation.

The Genesis Project proposed by Japan. Generate electricity from deserts and oceans on the ground, and connect the world's solar power plants into a unified grid through superconducting cables to supply electricity to the world. It is estimated that by 2100, even if all solar power is used to supply the world's energy, it will cover only 10,000 square kilometers.

10,000 square kilometers occupies the entire ocean area or the entire desert, or even the Sahara Desert. Therefore, this option is possible.

Celestial power generation scheme. As early as 1980, NASA and the Department of Energy proposed the idea of building a solar power station in space, preparing to put a large plate 10 kilometers long and 5 kilometers wide in synchronous orbit, covered with solar cells, so that it could provide 5 million kilowatts of electricity. But this requires solving the problem of wireless transmission to the ground.

Various options have been proposed, such as microwave beams and laser beams. At present, model airplanes have been used to achieve short-distance, short-time, low-power microwave wireless power transmission, but there is still a long way to go before it is truly practical.

Since 2005, China's photovoltaic industry has developed rapidly in the international market. In just five years from 2011 to 2016, China's total photovoltaic power generation has reached the world's largest new and cumulative installed capacity, and China is now the world's largest solar power producer, twice as large as the United States.

The United Nations International Energy Agency's Hemi Bahar said: China has dominated the field of photovoltaic power generation, more than 60% of the world's solar panels are produced in China, we should not underestimate this number, the biggest obstacle to the development of the photovoltaic industry is the high cost of solar panels.

China can produce 60% of the world's solar panels, indicating that China has mastered the way to reduce the cost of material production, and solar power generation as a clean energy source is bound to become a development trend in the future!

The outlook is promising.

In 2021, the National Energy Administration and local governments issued a series of documents to give strong support to the development of distributed photovoltaics. Under the policy push, China's industrial and commercial rooftop photovoltaic projects have also been promoted rapidly, and more points have blossomed. As an advocate and practitioner of industrial and commercial distributed photovoltaic policy, the relevant person in charge of Guangdong Nankong Power (hereinafter referred to as "Nankong Power") said that it has become the consensus of the whole industry that photovoltaic will usher in a blowout development in 2022.

With the support of policies, rooftop photovoltaic power generation will also usher in an explosion.

Photovoltaic power generation is a technology that directly converts light energy into electrical energy by using the photogenerated volt effect at the semiconductor interface. It is mainly composed of three parts: solar panels (components), controllers and inverters, and the main components are composed of electronic components. Solar cells can be encapsulated and protected in series to form large-area solar cell modules, and then combined with power controllers and other components to form photovoltaic power generation devices.

centralized photovoltaic power station, distributed photovoltaic power station; Among them, distributed photovoltaic power stations have the broadest development prospects! Distributed photovoltaic into people's lives, now many people are installed on the roof of photovoltaics, and this is just the beginning, if every household is installed photovoltaic, then how big is this prospect, the market determines the prospect. The market for distributed photovoltaics is huge, so the prospects for distributed photovoltaics are also great.

Solar power generation is known as the most ideal new energy source. There is no danger of depletion of solar power generation; Safe and reliable, no noise, no pollution emission, absolutely clean (no pollution); It is not limited by the geographical distribution of resources, and can take advantage of the advantages of building roofs; There is no need to consume fuel and erect transmission lines to generate electricity and supply electricity on site; high energy quality; The user is emotionally receptive; The construction period is short, and the time spent to obtain energy is short.

Solar power generation.

1.The light-heat-dynamic-electricity conversion method is made by using solar radiation.

The generated heat energy is generally converted into the vapor of the working medium by the solar collector, and then the steam turbine is driven to generate lead electricity. The former process is the light-heat conversion process; The latter process is the final conversion process of heat-to-power into electricity, which is the same as ordinary thermal power generation. Solar thermal power generation.

The disadvantage is that the efficiency is very low and the cost is high, and it is estimated that its investment is at least higher than that of ordinary thermal power plants.

5 times more expensive.

Solar power generation.

2.The direct optical-electrical conversion method uses the photoelectric effect.

The solar radiation energy is directly converted into electrical energy, and the basic device for light-to-electricity conversion is the solar cell. Solar cells are a type of solar cell due to the photogenerated volt effect.

The device that directly converts sunlight energy into electrical energy is a semiconductor photodiode.

When sunlight hits a photodiode, the photodiode converts the sun's light energy into electrical energy, generating an electric current.

When many cells are connected in series or parallel, they can become a solar cell array with relatively large output power. Solar cells are a promising new type of power source with three advantages: permanence, cleanliness and flexibility. Solar batteries have a long lifespan, and as long as the sun exists, solar cells can be used for a long time with a one-time investment; Compared with thermal power generation, solar batteries do not cause environmental pollution.

Solar power generation.

Through the above introduction, I believe we have a better understanding of the basic principle of our solar power generation, in our environmental protection today, our solar power generation has become a very popular way of power generation, but because of some technical reasons there is no way to promote it on a large scale, but I believe that it will become a very wide range of power generation methods in the future.

Solar panels convert heat energy directly into electricity.

There are two ways of solar power generation, one is the light-heat-electricity conversion mode, and the other is the light-electricity direct conversion mode.

1. The light-heat-electricity conversion method generates electricity by using the heat energy generated by solar radiation, which is generally converted into the vapor of the working fluid by the solar collector, and then drives the steam turbine to generate electricity. The former process is the light-heat conversion process; The latter process is the thermal-electric conversion process.

2. The light-electricity direct conversion method is to use the photoelectric effect to directly convert solar radiation energy into electrical energy, and the basic device of light-electricity conversion is the solar cell.

Monocrystalline silicon solar panel:

The photoelectric conversion efficiency of monocrystalline silicon solar panels is about 15%, and the highest is 24%, which is the highest photoelectric conversion efficiency among all kinds of solar panels, but the production cost is very large, so that it can not be widely and widely used in large quantities.

Since monocrystalline silicon is generally encapsulated with tempered glass and waterproof resin, it is robust and durable, with a service life of up to 15 years and up to 25 years.

The above content reference: Encyclopedia - solar panels.