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Shandong solar street lamps factory' 。 jschindo。 com】 Sharing: to fully analyze the solar power generation solar power key technology problem is current phase of the new energy science and technology, to solve the energy crisis, environmental pollution and sustainable development and so on three problems

shandong solar street lamps factory [ 。 jschindo。 com] Share: solar power key technical problems in comprehensive analysis

solar power is a new energy technology at present, and it will solve & other energy crisis. & other environmental pollution &; And & other sustainable development; Three big problem for us to use the new energy and new technology has entered a new era. There are a few core problems in the actual development. 1 1 solar resource data and evaluation. 1 solar energy resources solar radiation data available from the county bureau of meteorology or the national weather service. The data obtained from the bureau of meteorology is a horizontal plane radiation data, including horizontal plane the levels of total radiation, direct radiation and horizontal plane scattered radiation. Solar energy resource data mainly includes: solar total radiation ( Irradiance) On solar total radiation and radiation intensity or average. Data related to climate conditions mainly includes: the annual average temperature, the highest annual average temperature, annual mean minimum temperature, the longest continuous cloudy (of the year Including rainfall or snow) , the annual average wind speed, maximum wind speed, annual hail frequency sandstorm days and years. Among them, the sun on the value of the total radiation is very important. In addition, you should provide the data in the past 5 - Ten years of accumulated data, to evaluate the effectiveness of the solar energy resources and climate data. 1. 2 solar resource data validity evaluation when the meteorological department or related department for photovoltaic system design for the data of the solar energy resources, in some cases still need to assess its effectiveness. First of all, when the specific location of solar energy resources data is incomplete or lack of years of accumulation, must assess the effectiveness of the solar radiation and intensity. Second, although the local solar energy resource data is relatively intact, solar radiation conditions are relatively good, but the venue is located in the mountains or nearby, terrain characteristics significantly affect the solar radiation. In this case, it is necessary to study through the venue adjacent area around an average figure for this type of change to evaluate the effectiveness of local solar data. Third, the data obtained from the meteorological department is horizontal plane data, including from the horizontal plane direct radiation and scattering radiation from the horizontal plane, thereby gaining a level of total radiation data. However, in the practical application of solar photovoltaic power generation, in order to gain more power and battery module since the cleaning needs, fixed installation of square matrix is usually a tilted, this need to lean on the surface of the solar radiation calculation ( Usually is greater than the level of radiation on the surface) 。 But the calculation process is very complex, so people often use level data on the surface of the directly, or use of the conversion experience coefficient method for simple, it affected the accuracy of the calculation. Developed in recent years, some software that not only can easily solve these problems, also can be in the a large number of different parts of the solar radiation data stored in the database, some with functions of photovoltaic system analysis and design. Photovoltaic system location and site assessment 2. 1 pv system positioning, should eliminate the shadow. The solar cell depends on the sun to generate electricity. When the sunlight is blocked on the projected on the panels, a square matrix power output characteristics will be severely affected, the small shadow on the panels can also make the affected performance greatly reduced. Therefore, in the process of design and installation of photovoltaic system, determine the path of the sun's rays, carefully to avoid shadows, to guarantee the power rating of phalanx, reduce power generation cost of pv system is very important.