Global Solar analyzes the solar street light configuration plan for you solar street

1. Light source selection of solar street light: The principle of solar street light source selection is a light source with high light efficiency and long life that is suitable for environmental needs. The commonly used types of light sources are: tri-color energy-saving lamps, traditional nano lamps, electrodeless lamps, LEDs, etc. In view of the current situation of the global environment and the promotion of national policies, the most widely used solar street light sources are electrodeless light sources and LED light sources. 2. Selection of lamps: The selection of lamps is mainly based on reflectivity, illuminance, and maintenance factor. The quality of road lighting can generally be measured by three indicators: road brightness, uniformity, and glare. The quality of road lighting is shown in: 1. Brightness level: The average brightness of the road has different brightness requirements according to the road level. Generally, expressways and main roads require a brightness requirement of more than 2cd/m2, and secondary roads and auxiliary roads or residential roads are relatively low. 2. Average illuminance: The average illuminance refers to the average value of all the illuminances on the road, which is the unit of illumination intensity, generally expressed in LM. 3. Glare: road lighting should strive to limit the uncomfortable glare within a certain range, generally expressed by G value, under normal circumstances, Gu003d7 3. System configuration calculation: The formula for calculating the peak sunshine hours is, u003dA/(3.6X365) 4. Determination of the series voltage: The DC input voltage of the solar street light source is used as the system voltage, generally 12V or 24V. When the solar module voltage is 36V, the battery voltage is required not to be lower than 2/ of the module voltage. 3, so the voltage of battery, controller and light source should be selected at 24V. 5. Selection of controller: The controller is generally made of stainless steel, which has the characteristics of beauty and durability. The design of the charge and discharge controller takes into account light control, time control, overcharge and overdischarge protection and can realize secondary energy-saving control. , half-power lighting for a specified period of time. The battery can choose 'maintenance-free lead-acid battery6. Capacity calculation of solar panels: For solar street light, the overall system configuration formula: P u003d light source power X light source working time/peak sunshine hours; where P is the power of the battery module, the unit is W; the light source working time unit is H , Seven, battery capacity calculation: According to the local rainy weather to determine the selection of battery type and battery storage days, more rainy weather in the south, the choice of storage weather is generally 5-7 rainy days. Battery capacity calculation formula: battery capacity u003d load power x daily working time x storage days ÷ discharge depth ÷ system voltage, where: battery capacity unit is AH; load power unit is W; daily working time unit is H; storage days unit is D ; Discharge depth, generally about 0.8, and the system voltage unit is V.
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