Solar street light configuration scheme

Solar road lighting device is a lighting device that uses solar energy as an energy source. It integrates two cutting-edge technologies, solar power generation technology and LED lighting technology, to truly achieve zero carbon and zero emissions. The entire set of equipment is easy to install, no ground cable is required, and no consumption. Conventional electric energy can be installed on the spot as long as there is enough sunlight and the installation cost is low. It is an outstanding representative work of new energy in the application field, and it is also the main development target of secondary road and urban road lighting. It is widely used in rural tourism roads, urban and rural roads, campus roads, factory roads and other places that need lighting!

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e 1. Installation and layout of solar street lights:

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e The installation and layout of solar street lamp manufacturers need to choose installation and lighting methods according to the width of the road and lighting requirements. Generally, there are three methods: single-sided lighting, double-sided symmetrical lighting, and double-sided staggered lighting.

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e 2. Light source selection of solar street lights:

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e The selection principle of the solar street light source is a light source suitable for environmental requirements, high luminous efficiency and long life. Commonly used light source types are: three-primary energy-saving lamps, traditional sodium lamps, induction lamps, LEDs, etc. In view of the current global environment, under the promotion of national policies, the most used solar street light sources are electrodeless light sources and LED light sources.

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e Three, the choice of lamps:

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e The choice of lamps mainly considers the reflectivity, illuminance, and maintenance coefficient. The quality of road lighting can generally be measured by three indicators of road surface brightness, uniformity and glare. The quality of road lighting is shown in:

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e 1. Brightness level The average brightness of the road has different brightness requirements according to the road level. Generally, express roads and main roads require brightness requirements above 2cd/m2, while secondary roads and auxiliary roads or residential roads are relatively low.

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e 2. Average illuminance Average illuminance refers to the average value of all illuminances on the road surface. It is the unit of illuminating intensity, generally expressed in LM.

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e 3. Glare Road lighting should strive to limit the uncomfortable glare within a certain range, generally expressed by G value, under normal circumstances, Gu003d7

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e Four, system configuration calculation:

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e The formula for calculating the peak sunshine hours is: Peak sunshine hoursu003dA/(3.6X365)

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e 5. Determination of series voltage:

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e 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 to be no less than 2/3 of the module voltage, so the battery, controller and light source voltages are all To choose 24V.

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e Six, the choice of controller:

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e The controller is generally made of stainless steel, which is beautiful and durable. The design of the charge and discharge controller takes into account light control, time control, overcharge and overdischarge protection, and can achieve secondary energy-saving control. Half-power lighting. The battery can choose maintenance-free lead-acid batteries, most of which are built into the control box with the charge and discharge controller.

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e VII. Calculation of solar panel capacity:

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e For solar street lights, the overall system configuration formula: Pu003dlight 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, the peak sunshine hours unit Is H;

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e 8. Battery capacity calculation:

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e The first choice is to determine the battery type and the number of storage days for the battery according to the local cloudy and rainy conditions. There are more cloudy and rainy weather in the south, and the storage weather is generally 5-7 cloudy and rainy days. Battery capacity calculation formula: battery capacity u003d load power X daily working time X storage days ÷ depth of discharge ÷ system voltage where: battery capacity unit is AH; load power unit is W; daily working time unit is H; storage days unit is D; The depth of discharge is generally about 0.8, and the system voltage unit is V; tob_id_3645

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e Nine. Light pole design:

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e The commonly used pole design for solar street lights is a steel tapered pole, which is beautiful, sturdy, durable, simple in processing technology, high in mechanical strength, and easy to make various shapes. The cross-sections of commonly used light poles are round, hexagonal, octagonal, etc., the taper is 1:90, 1:100, and the wall thickness depends on the force of the light pole, generally 3-5mm

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e Ten. Angle design:

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e In order for solar street light battery modules to receive the maximum solar radiant energy in a year, we must choose an optimal inclination angle for solar battery modules.

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e 11. Wind resistance:

u003cbru003e

u003cbru003e

u003cbru003e

u003cbru003e In the solar street lamp series, a very important issue in structural design is the wind resistance design. The wind resistance design is mainly divided into two parts: the wind resistance of the battery module bracket and the wind resistance of the light pole;