Discusses the use of solar energy battery components, “the largest annual winter balance” the principle of receiving solar radiation and the use of the maximum annual total amount owed and the depth of discharge capacity of the method of calculation of the battery components.
I. Overview
The face of sustainable human development, from the existing conventional energy sources to clean, renewable energy transition has been referred to the new procedure will come up. Because the new high-tech energy is based on the development of sustainable renewable energy sources opened the road to meet the growing energy needs of mankind, and to protect the earth clean. Use of solar power generation, does not require fuel, no smoke and ash, no pollution, very clean. In particular, solar modules, the service life of up to 20 years, stable performance, while maintaining low cost.
Solar road lights do not need to set up transmission lines or laying cable trenching, no special management and control can be installed in the square, car park, golf courses, schools, parks, streets and highways anywhere. This is the author of the new campus of Shenyang Institute of Engineering design of two main elements and results of solar lights.
1. Design Principles
Solar street light system components the general principle is to guarantee the power supply to meet the needs of the premise of the load, determine the least power and solar module capacity of the battery components to minimize the initial investment. The system designer, in photovoltaic system design process to make decisions will affect the cost of each. Due to improper choice, can easily make the system’s investment multiplied, and may not appear to be able to meet the requirements.
In the design calculations, the basic data required are: site location, location, latitude, longitude and altitude; installation site meteorological data, including monthly total solar radiation, direct radiation and scattered radiation , and the highest annual average temperature, minimum temperature, maximum number of consecutive rainy days, the maximum wind speed and hail, snow and other special weather situation. Weather information is generally unable to make long-term forecasts, can only last 10 to 20 years on average as the basis.
To present the internationally popular “winter half year balance of the largest” in the amount of solar radiation received photovoltaic system design principles that, according to the requirements of a balanced charge the battery components to the summer months and winter months in the components of surface solar radiation amount equal to, but also to make the components daily winter maximum possible amount of radiation, thereby increasing the intensity of solar radiation in the weak components of the power generation principle of the month to determine the optimal solar angle and surface components The best current generation, while the cumulative annual statistics of the largest continuous power owed, combined with the appropriate depth of discharge the battery components, battery components to determine the components and with a reasonable capacity.
2. Design
Firstly, according to the anisotropic sky radiation model, calculated at the latitude φ, β the slope angle for the solar radiation on HT. In practice, it can at the local latitude -20 ° ~ 30 ° were calculated within six months of summer and winter months the average daily amount of radiation 12H and H, then the above principles, to determine the best angle and the local monthly average daily radiation.
(1) the average peak sunshine hours mT
Find the annual average daily solar radiation TH, and units mWh/cm2 said on solar radiation intensity divided by the standard, you can find the average peak sunshine hours Tm.
(2) to determine the best current solar panel Solar panel should be the minimum output current.
Where, L is the load at a total daily electricity consumption; η1 components for the battery charging efficiency (0.80 ~ 0.90); η2 solar modules for the solar surface due to dust pollution caused by the aging shelter or correction factor, usually 0.9 ~ 0.95iii desirable ; η3 loss for the combination of solar modules and the maximum power point deviation from the correction factor, usually 0.9 to 0.95 preferred.
Tips of Design Solar Street Light
Posted by admin in News
Discusses the use of solar energy battery components, “the largest annual winter balance” the principle of receiving solar radiation and the use of the maximum annual total amount owed and the depth of discharge capacity of the method of calculation of the battery components.
I. Overview
The face of sustainable human development, from the existing conventional energy sources to clean, renewable energy transition has been referred to the new procedure will come up. Because the new high-tech energy is based on the development of sustainable renewable energy sources opened the road to meet the growing energy needs of mankind, and to protect the earth clean. Use of solar power generation, does not require fuel, no smoke and ash, no pollution, very clean. In particular, solar modules, the service life of up to 20 years, stable performance, while maintaining low cost.
Solar road lights do not need to set up transmission lines or laying cable trenching, no special management and control can be installed in the square, car park, golf courses, schools, parks, streets and highways anywhere. This is the author of the new campus of Shenyang Institute of Engineering design of two main elements and results of solar lights.
1. Design Principles
Solar street light system components the general principle is to guarantee the power supply to meet the needs of the premise of the load, determine the least power and solar module capacity of the battery components to minimize the initial investment. The system designer, in photovoltaic system design process to make decisions will affect the cost of each. Due to improper choice, can easily make the system’s investment multiplied, and may not appear to be able to meet the requirements.
In the design calculations, the basic data required are: site location, location, latitude, longitude and altitude; installation site meteorological data, including monthly total solar radiation, direct radiation and scattered radiation , and the highest annual average temperature, minimum temperature, maximum number of consecutive rainy days, the maximum wind speed and hail, snow and other special weather situation. Weather information is generally unable to make long-term forecasts, can only last 10 to 20 years on average as the basis.
To present the internationally popular “winter half year balance of the largest” in the amount of solar radiation received photovoltaic system design principles that, according to the requirements of a balanced charge the battery components to the summer months and winter months in the components of surface solar radiation amount equal to, but also to make the components daily winter maximum possible amount of radiation, thereby increasing the intensity of solar radiation in the weak components of the power generation principle of the month to determine the optimal solar angle and surface components The best current generation, while the cumulative annual statistics of the largest continuous power owed, combined with the appropriate depth of discharge the battery components, battery components to determine the components and with a reasonable capacity.
2. Design
Firstly, according to the anisotropic sky radiation model, calculated at the latitude φ, β the slope angle for the solar radiation on HT. In practice, it can at the local latitude -20 ° ~ 30 ° were calculated within six months of summer and winter months the average daily amount of radiation 12H and H, then the above principles, to determine the best angle and the local monthly average daily radiation.
(1) the average peak sunshine hours mT
Find the annual average daily solar radiation TH, and units mWh/cm2 said on solar radiation intensity divided by the standard, you can find the average peak sunshine hours Tm.
(2) to determine the best current solar panel
Solar panel should be the minimum output current.
Where, L is the load at a total daily electricity consumption; η1 components for the battery charging efficiency (0.80 ~ 0.90); η2 solar modules for the solar surface due to dust pollution caused by the aging shelter or correction factor, usually 0.9 ~ 0.95iii desirable ; η3 loss for the combination of solar modules and the maximum power point deviation from the correction factor, usually 0.9 to 0.95 preferred.