How to configure the solar energy is reasonable?

Solar what configuration is reasonable? A: first to calculate the current: such as: the 12 v battery system; 2 only 30 w lamp, a total of 60 watts. Current = 60 wdivide; The 12 v = 5 a 2: calculate the battery capacity requirements: such as: the street lamp lighting time of accumulative total of every night need to full

how the distribution of the solar energy is reasonable? First of all, the calculation of current: for example: the 12 v battery system; Two 30 w lamp, total power of 60 w. Current 60 wdivide12v = = = 5 a second, calculation of battery capacity requirements: for example, in full load, the accumulative total of street lamp lighting time need for 7 hours each night. ( For example, at 8:00 open, at 11:30 closed route 1, 4 in the morning: 30 open route 2, 5 in the morning: 30 closed route) Need to meet the demand of five consecutive rainy day lighting. ( 5 days and rainy days the night before the lighting, for 6 days) Battery = = 5 minutes; 7 hours. ( 5 + 1) Days = = 5 days; 42 h = 210 ah in addition, in order to prevent the battery overcharge and over discharge, the battery is usually charge to about 90%. The remaining emissions of about 20%. So real standard in the application of 210 ah is around 70%. 3. Calculate panels peak demand value: the accumulative total of street lamp lighting time need for 7 hours each night, h) ； Painted panels, average effective exposure time is 4. 5 hours ( h) ； Set aside at least 20% of the panels demand quantity will be relaxed. WPdivide17. 4 v = ( 5 minutes; 7 hours. 120%) In addition to; 4. WPdivide17 5 hours. 4 v = 9. 33WP=162( West) U: 4. 5 h coefficient of sunshine sunshine time is the middle and lower reaches of the Yangtze river region. In addition, the components of line loss, solar street lamps controller loss and ballast or constant current source is different, power consumption is likely to be 5% in the practical application 25%. 162 w is only a theoretical value, therefore, need to increase according to actual situation.