Photovoltaic power generation technology application prospects in the countryside

Solar panels, photovoltaic power generation is a way to use light born v effect principle that convert light energy into electrical energy power generation technology, it has no pollution, no noise, 'using them all, limitless reserve' wait for a characteristic, is a kind of important form of new energy power generation. According to the operation mode of photovoltaic power generation system is different, can be divided into three kinds, the first is a large and medium-sized grid photovoltaic power station, the photovoltaic power station output high voltage and power grid parallel operation, general construction in the solar energy resources are rich and idle land resource areas, such as desert, etc. ; The second is small grid photovoltaic power station system, it outputs a low voltage and low voltage power grid parallel operation, generally small grid photovoltaic power generation system combined with buildings, such as rural photovoltaic roof systems, etc. ; The third one is stand-alone photovoltaic power generation systems, it is not to the power grid in parallel, directly or through a storage battery supply load after sending electricity, solar street light. At present as photovoltaic power generation technology is more and more mature, photovoltaic power generation efficiency improved, photovoltaic power generation costs have fallen at the same time.

2

the necessity of photovoltaic power generation, rural development of our country at present about 900 million people live in rural areas, most farmers burning straw, wood, etc is needed to obtain energy, it will cause deterioration of rural living environment, environmental pollution, hinders the development of rural economy. Photovoltaic power generation combined with rural houses, use of the photovoltaic (pv) poverty alleviation policy of the country and spontaneous for self-use, excess electricity access to the Internet, the principle of in a certain extent can improve rural living conditions and economic level.

3, photovoltaic application situation in the countryside

no high-rise buildings in the rural areas, the photovoltaic panels can choose to install the best Angle, can be the most widely accepted the sun radiation energy. Photovoltaic (pv) power generation can be used in roof photovoltaic power generation system, solar street lamp, solar photovoltaic pump system and other rural places.

（ 1)

below rural photovoltaic roof system is rural photovoltaic roof schematic diagram of the system, and it is a photovoltaic array, dc junction box, dc switch, inverter, ac switch and user of electric meter junction box. Can choose more than 'spontaneous for private use, electricity on the Internet' and 'full access to the Internet' in two ways.

（ 2) Solar street light

solar street lamps, lighting is a kind of energy-saving products, not only USES the photovoltaic battery power, but also using LED light source. Below is solar street lamp, its working principle is the sunshine during the day, photovoltaic modules absorb light energy into electricity, battery power supply via the controller. At night, the battery through the controller to the LED power supply.

（ 3) Solar photovoltaic pump system

this is the schematic diagram of the solar photovoltaic pump system, it is made up of pv array, pumping inverter and water pump, can be achieved for the irrigation of the field.