What is Photovoltaic? What are the prospects for the development of our country in the next few year

The history of solar energy can be traced back to the beginning of mankind. Under the situation of global warming, the deterioration of people's green ecological environment, the shortage of non-renewable energy resources and environmental pollution, photovoltaic power generation has received great attention in the world, and the development trend is rapid. In the long run, photovoltaic power generation will eventually enter the power system with decentralized switching power supplies and partially replace non-renewable energy. In the near future, photovoltaic power generation can be used as a supplement to non-renewable energy, dealing with the electricity demand of civil daily life in unique main uses and remote areas without electricity, which has great significance from the perspective of ecological environmental protection and new energy development strategy.

Today, let's discuss the current situation and market prospects of photovoltaic power generation in China.

Photovoltaic power generation has many characteristics, can be trusted, no noise, zero pollution, kinetic energy can be obtained everywhere, will not be subject to geographical restrictions, no need to consume natural materials, no mechanical equipment rotating components, low equipment failure rate, simple maintenance, can be unmanned, short construction cycle time, business scale and size casually, no need to build power lines, can be easily combined with housing construction, etc. This advantage is unmatched by basic power generation and other power generation methods.

At present, China's photovoltaic power generation sales market is mainly used in remote areas of rural electrical automation, communication and industrial applications and solar photovoltaic power generation products, including solar road street lights, buried lights, solar traffic indicators and solar landscape lighting. Because the cost is very high, the operation of photovoltaic power generation is still in the demonstration link at this stage.

Although China's photovoltaic power generation can not get rid of state subsidies to survive, but the development prospects of the industry have improved: the cost of power generation has decreased, the profit of the industry has increased, and the new energy policy issued by the first department in compliance with environmental pollution. China's installed photovoltaic power generation capacity in the first half of the year was 77.3 billion kilowatts, a sharp increase compared with the same period.

However, it has set a target of 43% of the total annual installed capacity target of 178 billion kilowatts with the National Energy Administration. If it is qualified in the second half of the year, it means that the installed capacity in the second half of the year will exceed 100 billion kilowatts, a sharp increase of nearly 40% compared with the same period, which is beneficial to the photovoltaic industry.

China has formulated a short-term and long-term construction plan for photovoltaic power generation, due to the lack of resources of traditional non-renewable energy, the proportion of renewable resources is increasing year by year, and the proportion of photovoltaic power generation is also increasing rapidly. According to the analysis of the overall plan, by 2050, China's installed photovoltaic capacity will reach 2,000GW, and the power generation capacity will reach 2,600TWh, accounting for 26% of the country's total power generation capacity. With the improvement of contemporary production technology, the conversion efficiency of photovoltaic power generation will gradually increase, and the cost of power generation may be greatly reduced, so that the price of photovoltaic power generation is less than the basic electricity fee to a certain extent.

Although the photovoltaic industry has encountered some problems at this stage, the development trend of China's new energy industry is generally proactive and steady. At this stage, the National Energy Administration has prepared the 13th Five-Year Plan for photovoltaic power generation, promoting the payment of subsidies, promoting scientific and technological progress and industrial structure upgrading, which will boost the future development of the photovoltaic industry.

Photovoltaic power generation is a new type of power generation by using modules and then converting the sun into electricity. In the next few years, the development will get better and better, and this way of generating electricity is very environmentally friendly and particularly convenient. The lifestyle of ordinary people will change a lot, and ordinary people can also get benefits through photovoltaic power generation.

Photovoltaic power generation refers to the use of a certain principle to convert light energy into electrical energy; The prospects for the future development of our country are very good; For us ordinary people, it can reduce our cost of living, make our lives more convenient, be more environmentally friendly, and extend our existence.

Photovoltaic power generation is based on solar energy irradiation on the light collector board into electricity, the formation of the current is called photovoltaic power generation, in the next few years in our country development is very promising, the impact on our ordinary people is also very significant, because China is a multi-population country, the demand for electric energy is very large.

Photovoltaic power generation has received great attention in the world, and the development trend is rapid. In the long run, photovoltaic power generation will eventually enter the power system with decentralized switching power supplies and partially replace non-renewable energy. The equipment failure rate is low, the maintenance is simple, it can be unmanned, the construction cycle time is short, the scale and size of the business are casual, there is no need to build power lines, and it can be easily combined with housing construction.

Social benefits of the PV industry.

It is mainly reflected in the following 6 aspects:

1) Solve the problem of people without electricity and electricity consumption in poor areas.

Every 3,460 yuan investment in independent photovoltaic can solve the electricity consumption of one person; However, investing in the power grid requires 13,385 yuan, which is twice that of independent photovoltaics.

2) Achieve targeted poverty alleviation.

2015 In 2017, about 2 million poor households will receive a stable income of 3,000 yuan per year in the next 20 years, which is equivalent to providing 6 billion yuan of poverty alleviation funds every year.

3) Promote the integration of the central and western regions.

The western region attracts photovoltaic manufacturing enterprises to invest with low energy and labor costs. At present, 57% of the polysilicon production capacity is in the western region, and this figure may reach 76% by the end of 2018New capacity in other segments.

Most of them are also in the west. At the same time, by the end of 2016, 40% of the country's photovoltaic installed capacity was in the western provinces, making full use of the abundant local solar energy resources and desertified land, and effectively improving the desertification of the land.

4) Activate private capital and promote the diversification of the main body of the energy industry.

From extraction to power generation, traditional energy is basically controlled by state-owned enterprises. And the photovoltaic industry.

In particular, distributed photovoltaic has broken the geographical factors of traditional energy, lowered the entry threshold, and provided the possibility for a wider range of small and medium-sized enterprises and the public to participate in the energy industry.

Among the enterprises with large holdings, state-owned enterprises and private enterprises each account for half of the country, while small-scale holders are mainly private enterprises. The characteristics of photovoltaic power generation determine that it is the main force to promote the diversification of the main body of the energy industry. This shift in role will have a significant and far-reaching impact on the evolution and development of the energy system.

5) Intensive land use and universal renewable energy.

Layout of the energy Internet.

The new form of development of photovoltaic power generation and other industries has become one of the measures for the development and transformation of many regions, and on the basis of the original function, the original building has increased the effect of power generation and energy saving, and improved the utilization rate. The development of household photovoltaic has brought renewable energy into thousands of households, let ordinary people know about renewable energy, and improve energy conservation and emission reduction.

Conscious. The development of distributed photovoltaic has laid a solid foundation for the future development of the energy Internet.

6) Conserve water resources.

From the perspective of the whole life cycle, the water consumption of photovoltaic power generation is only 50% of the water consumption of coal power, and vigorously developing photovoltaic power generation can effectively save water resources.

The technology that converts solar energy directly into electrical energy is called photovoltaic power generation technology. It is the use of the photogenerated volt effect at the interface of semiconductors.

It is a technology that converts direct light energy into electrical energy. The key element of this technology is the solar cell. 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.

The advantage of photovoltaic power generation is that it is less geographically limited because the sun shines on the earth;The photovoltaic system also has the advantages of safety and reliability, no noise, low pollution, on-site power generation and power supply without fuel consumption and transmission lines, and short construction period.

Photovoltaic power generation is based on the principle of photogenerated volt effect, using solar cells to directly convert sunlight energy into slow building electricity. Whether it is used independently or connected to the grid for power generation, photovoltaic power generation system.

Mainly consists of solar panels (modules), controllers and inverters.

It is composed of three major parts, which are mainly composed of electronic components.

The composition does not involve mechanical parts, so the photovoltaic power generation equipment is extremely refined, reliable and stable, with long service life and easy installation and maintenance. Theoretically, photovoltaic power generation technology can be used in any occasion that requires power, from spacecraft to household power supply, to megawatt power stations, to small toys, photovoltaic power is everywhere. Solar photovoltaic power generation.

The most basic element is the solar cell (sheet), which has monocrystalline silicon.

Polysilicon, amorphous silicon and copper indium gallium selenide thin-film cells, etc.

It's already very mature. The next step is to continue to improve the conversion efficiency of photovoltaic power generation and strive to approach the conversion efficiency of electronic level.

Very mature. There are good solutions in the grid-connected scheme, self-consumption, surplus power grid, etc., and there are no barriers to the gap in technology. Different manufacturers are mainly reflected in the same equipment, especially the bright inverter and related components, and there is a lot of room for choice.

At present, the most widely used is crystalline silicon photovoltaic power generation technology.

The more mature technology is the crystalline silicon cavity stove photovoltaic power generation technology, which is also the most widely used. Monocrystalline silicon or polycrystalline silicon solar plates, batteries, controllers, if AC and DC transformer AC devices are used, nanofiber for large-scale photovoltaic power generation also needs to go through step-up and step-down equipment. Many of the equipment that needs to be used for power generation, transformation and transmission are very mature.

The existence of photovoltaic panels has high cost, low power generation, high requirements for the use of the environment, and the huge difference between the cost of power generation and investment is huge.

The current photovoltaic power generation technology is mature, and this technology is also slowly maturing.