Polaris solar PV net news: these days, when supported by policies, under the enterprise promotion, user experience, photovoltaic power into homes, into the community, schools, factories, rural areas, and other places. So, between the urban and rural areas, photovoltaic power generation is to develop faster or the city to rural development? More rural than urban priority development of photovoltaic power generation? The answer is: photovoltaic trends: encircling the cities from the countryside than cities more priority to the development of photovoltaic power generation. Why would think? Let xiaobian give you analysis:
Difference of urban collective housing and rural housing
In the city, houses belonging to all the owners of all of the roof, anyone (including real estate developers and owners) not on the roof does not have an exclusive right to the roof. In that case, here to install PV panels, you must first seek the consent of all the owners to install, rather than to individual owners. In urban communities, most of the houses are more than five, tenants groups mixed uses are not the same, in addition to outside the home, also used for rental or other use. Housing with roof access is particularly prominent.
In rural areas, single households, tenants are mostly farmers. Their houses are scattered, the whole House is home. For them, the right to return all of the roof, as long as it doesn’t impede the social, legal, and at the top want to install anything. However, the construction of housing in rural areas is not very solid, needs to reinforce houses, pay attention to security risks.
At this point, I believe seeing the article you should see more rural than urban advantage, because the country has such advantages, small will feel “countryside surrounding cities, more rural than urban priority development of photovoltaic power generation”.
In the form of installed photovoltaic power generation in rural and urban differences
In the city, if not through the building landlord, to build a photovoltaic power station belongs to all, you can also install solar panels on their balconies, walls is also a model. But this will affect the whole building aesthetics and the environment, many communities did not agree with the owners who build.
City districts such as parking shelters, street lights, pavilions and other buildings, as these vacant buildings, without affecting the community appearance can also be rational distribution of photovoltaic power generation. Realization of environmental protection, energy conservation, power generation, appreciation, practical in one.
In the countryside, farmers preferred rooftop PV. The roof area, homes in close proximity and easy dust collection maintenance, easy to see the power supply, power generation and other factors. Secondly, rural areas have a large area of farmland, ponds, desert, grassland, forest, and how to utilize these resources, it is especially important for the construction of ecological civilization.
In recent years, the local use is the largest greenhouse photovoltaic, above the agricultural greenhouse covered with photovoltaic panels, agriculture and electricity generation in one, power above the following vegetable farming and “complementary”. As well as “fishing” in the water such as ponds, rivers and reservoirs to install solar PV panels to achieve fish and power in one, top power bottom fish and “Yue Kwong mutual complements”. In some places, in convex mountain Heath blanket PV panels, effectively enhance the value of the land.
In this connection, more rural than urban in installed photovoltaic power generation more advantage, make even more firmly believe that “encircling the cities from the countryside, and more rural than urban priority development of photovoltaic power generation”.
Is not considered by the urban and rural residents
In the city, community for environmental protection, health, aesthetics, security requirements are relatively high. In view of these factors, some residents worried about PV process will produce pollution or PV panels will produce radiation. In fact, this process is no pollution, no noise, and will not cause harm to the human body.
Many residents for community appearance requirements are very high, if PV panels installed seem abrupt, ugly, pretty, will inevitably affect the taste, mood and life of the residents and the community as a whole. Therefore, in the layout when PV power station, you need to design, architecture, landscape, integrated PV.
In the countryside, farmers friends, biggest anxiety is that PV can bring considerable benefits, whether using your own electricity from, or villagers ‘ focus is “spontaneous use online” model results are beneficial to farmers.
In this connection, also naturally reflect the countryside than cities dominated in installed photovoltaic power generation, which is small “countryside surrounding cities, more rural than urban priority development of photovoltaic power generation,” one of the reasons.
The above three points, make agree with identity “encircling the cities from the countryside, rural people are higher priority than urban development of photovoltaic power generation” this view. Next, the editor would also like to talk about the advantages of the PV for rural development:
A, low energy density natural fit for rural
We look at the power user, you will find, in addition to the large factories and facilities, the vast majority of consumers actually need energy density is not high. To residents, for example, calculated in accordance with 5KW of power per household, PV power requires approximately 25 square meters of photovoltaic modules, about 50 square meters of roof area, which is the vast majority of people’s homes to meet.
Geographical expanse in rural areas, low population density, small power consumption, also has the characteristic of low energy density, therefore, renewable energies such as solar, wind, biogas etc, naturally very suitable for application in a rural environment.
Second, remote rural electrification by PV
Modern living without electricity, so the State in 1998, full electrification in rural areas, but when in remote areas to cover, through mass-building power lines to achieve “village power” becomes very difficult. Long power lines, power supply RADIUS, low supply voltage difficulties making it difficult for power engineering advancement. Therefore, photovoltaic power generation in these areas will become necessary.
It can be said that farmers in remote areas of PV provides a choice of more autonomy, they can start tomorrow to install photovoltaic panels, a few days or a few months later to electricity. If they could only wait for the paving can have lines to the national grid, then, linzhi Prefecture, Tibet or the remote village of kaili, Guizhou, electricity will be able to, depending on the local Government’s long-term planning, budgeting for long-distance transmission lines, depending on the country’s overall electricity plan; farmers in those areas is likely to need to hopelessly wait a few years, or even more than 10 years, for decades.
Three, the full electrification of suburban country need PV
Compared with the urban network, rural supply line capacity is very small, rural household capacity to 300 Watts. This is because on the one hand is now the rural electricity consumption is very small, on the other hand due to long distance transmission, electricity sector rural future electricity demand was not willing to set aside surplus power, otherwise the cable cost and installation cost will be multiplied.
But in fact, with the economic development and improvement of living standards in rural areas, farmers home appliance will become increasingly more power more and more natural. In rural areas, is the main source of new demand in the future, will also become a major area of future electricity demand in China. In another ten years, we will find that rural electricity capacity will increase four times than it is now!
In order to meet new demand for electricity in rural areas, countries beginning this year to start the power grid upgrading project, but this is only for the poor, and expensive. If all the rural power grids, it is rather a lot!
In addition to the laying of the line costs, rural electrification needs also brings another question, that is, huge increases in electricity demand, means that the huge increase of new emissions. Therefore, if demand for electricity in rural areas is extended with the existing power grid, will mean a lot of increase in carbon emissions and dust emissions. Taking into account the ecology in rural areas than in cities are more vulnerable to climate change, so, even with power-driven expansion to be used by the national grid to meet the new rural or urban demand for electricity, rural areas cannot afford the resulting climate change and environmental impact. And the increase in demand for electricity in rural areas brought about by the deterioration of the environment, such as fog, for the urban population will place unbearable consequences.
Taking into account the characteristics of low energy density in rural areas, the “instant” method in the user-side power of photovoltaic systems, can greatly reduce the cost of transmission lines, while reducing transmission losses. So to speak, per installed megawatt photovoltaic power plant in rural areas, reducing a two-megawatt thermal power plant emissions, and certainly not a 1:1 relationship.
In view of the above, responsibility for rural electrification, from now on, will inevitably fall upon new energy sources such as photovoltaic. Trying to replace it with a variety of new energy power generation and long-distance transmission lines, bring electricity to rural areas and other forms of energy, should be the coming decades Governments and societies established for the rural development strategy, a clear mission.
Four, photovoltaic electricity generation farmers more autonomy
Now has achieved power, and connection has big grid of rural area, subject Yu big grid of factors, often will occurred blackout, and fault, problem, production, and life often cannot independent, and if rural energy can not rely on Yu Government or outside of factors and to can renewable energy of way achieved energy independent, rural area of population can independent to control itself of energy supply, so, village and town of economic development and social culture development on can became more independent, at least not by power shortage of limit.
Has has independent of power, farmers can has conditions see TV, and phone, and with computer, and Shang Internet; farmers can has more bright of lighting, home can enjoy using air conditioning; can himself for water purification and with Shang tap water, can for sewage processing to improved around of ecological conditions; can itself established gas station to let himself of home with Shang pipeline gas; can through clean not brings pollution of irrigation and greenhouse improve crop production. And those has courage or has wisdom of farmers can in rural do himself hope do of things, regardless of is business, and do handicrafts, and make agricultural processing, and or do Enterprise; those has creativity of girl guy can play himself of imagination for various form of art creation, may is cut, and straw, and clay, and woodcut, and painting, and drama, and erhu, traditional folk art, may is anime, and drama, and micro-movie, and guitar, and piano, more trendy of art form.
In view of the good environment and landscape of the rural landscape, in the life, improved transportation and communication conditions, more people will travel more frequently to the countryside and living, which in turn will bring more income and wealth to farmers.
In short, as long as there are independent of energy, living conditions in rural areas closer to urban life, even better.
Five, the future of humanity or will return to DC power system
In 1880, when Thomas Edison invented the light bulb, routing a power transmission systems, power systems are low-voltage direct current (identical to the photovoltaic power generation and now). But at this time, the Westin House found another important figure in the history of electricity, Edison’s low-voltage DC power system has obvious limitations. Because each DC Central station only covers a radius of 1 mile range, so he designed AC high voltage long distance transmission, variable pressure to the transmission system of low pressure into the family again. In direct current, alternating current for more than 10 years after a fierce competition, power transmission and transformation system and gradually evolved into the modern grid system. Since then, growing power power plant, transmission distance and longer, higher transmission voltage. High pressure and ultra high power, ultra long distance transmission becomes the sign and symbol of the modern grid.
Times reincarnation. With the application of new energy sources such as photovoltaic, PV power power became available, no noise, no pollution. Now that his roof will produce electricity, why long distance transmission? Of course, have built power transmission system still has its uses, such as big cities like Shanghai, Baoshan Iron and steel plant, are needed. However, for rural areas, new towns, for agriculture, for a large number of small amount of electricity, but has a large area of the roof of the factory, why backbone network transmission? If we also consider a step deeper, family appliances, can be used direct current, and most of the direct current must be used. For example, televisions, telephones, computers, LED lights. While those high-power appliances, such as air conditioners, refrigerators, rice cookers, but can also be used direct current. So, direct current and alternating current will occur the second world war, this time the winner is which one do?
Can be sure of is, with the application of new energy sources such as photovoltaic power generation, DC power is likely to rise once again, and in homes and offices have the upper hand. However, this is certainly not a retrograde step, but a step forward, is a downward spiral of rising.
In future, those power is not so great, facilities and buildings, can adopt a new energy in the form of micro-grid power supply. A variety of new energy on the in-place the load of the power supply, power supply and load together form a micro-grid. Network load increases with the increase in power can be synchronized, there is no size limit problem. Because the new House must have a new roof. Then, a large number of micro-grid through smart technology interconnect, and those users can still use existing transmission and distribution grid system, micro-grid and backbone network get together to form a wide local, national and global energy Internet.
This is not fantasy, global Internet Conference on energy held in April this year, has described such a blueprint. Released this year by the national grid company to promote a new energy white paper (2016), there is mention of strengthening the construction of smart distribution grid to accelerate breakthrough in energy storage technology, increasing and diverse load capacity distributed power supply, distributed plug-and-play and of new energy and the coordination of power system operation.
All of this to say, construction of energy Internet, is on the way, around your House in the future might formed a smart micro grid, then, the energy will be more independent, more clean.
In the PV for rural development but also to:
Whether it’s building a home photovoltaic plant, or other mode of photovoltaic plant, are receiving State subsidies, increase their income.
2, can be poor.
Photovoltaic power generation is simple, stable and reliable, the rural poor do not have the ability to work, have a stable source of income.
3, effectively alleviate the contradiction between people and land, and promoting sustainable socio-economic development.
Agricultural greenhouses in PV power and light complementary projects make use of agricultural and fisheries industries shed roof and the water, does not occupy the ground, won’t change the nature of land use, it can save land resources. Can effectively reverse population growth plays an active role in the substantial reduction in cultivated land. The other hand, PV projects in the original building on agricultural land, land quality, contributing to the development of modern agricultural projects, developing modern agriculture, supporting agriculture to second to third combination of industry and primary industry. And you can directly increase the income of local farmers.
4, have the flexibility to create appropriate environment for different crops
Agricultural big canopy installed by different transmittance of solar panels to meet the lighting needs of different crops, planting seedlings of organic agricultural products, precious, and other high-value crops and also to achieve the anti-season planting, fine plant.
5, meet agricultural demand, generating benefits
Ceiling power can meet the electricity demand of agricultural greenhouses, such as temperature control, irrigation, lighting, light, and power grid can also be sold to power companies, earnings, generating benefits for enterprises.
6, new paths opening up agricultural production
Compared with traditional agriculture, more attention to science and technology elements into greater focus on management and pay more attention to improving the quality of laborers, as a new business model of agricultural production to the development of regional agricultural science and technology extension and application at the same time, through the realization of industrialization of agricultural science and technology, agriculture, will become a regional pillar industries of agricultural production and farmers ‘ income.
7, promote the construction of green agriculture and the beautiful countryside
Photovoltaic is a green and clean source of energy, weak ecological environment in rural areas, the development of photovoltaic power generation not only protection of the rural environment, but also to promote the construction of green agriculture production and the beautiful countryside.
Listen to small series so much, do you also like small, agreed that small series called “encircling the cities from the countryside, more rural than urban priority development of photovoltaic power generation” this view? Cities have the advantages of the city, the advantages of rural countryside, but, relatively speaking, small thought, has the advantage of greater in rural areas, more than a city priority development of photovoltaic power generation.
Whether in rural or urban development of photovoltaic power generation, photovoltaic industry is invaluable in the future, I believe, has a photovoltaic green energy, our future will be better.
Original title: photovoltaic trends: encircling the cities from the countryside than cities more priority to the development of photovoltaic power generation