The Advantages and Disadvantages of Solar Street Light
Solar energy is sunlight that has been transformed into thermal or electrical energy. A kind of unrenewable and eco-friendly new energy source is solar power. One use of solar electricity is the solar street light.
Stability, a long service life, ease of installation, safety, excellent performance, and energy saving are all benefits of solar street lighting. This kind of lighting may be found extensively placed in parking lots, industries, residential areas, and urban roadways.
The LED light source, solar panels, storage battery, solar charge controller, lamp-post, and additional wire rods make up the solar street light. The solar module is typically constructed of polycrystalline or monocrystalline silicon. The subterranean or specialised battery incubator is where the store battery is kept. Typically, the battery is a lithium, iron-aluminum, gel, or valve-regulated lead-acid battery. The lamppost contains the controller. It has the ability to defend against overcharging, overcharging, trickle charging, reverse connections, undervoltages, light control, and time control. In a nutshell, the storage battery is protected by the solar charge controller.
Operating Theory
Solar panels use a solar charge controller to harness the sun's energy throughout the day and turn it into power. The storage battery will be charged by solar panels. The storage battery powers the LED light source at night. By using a DC controller, you can be sure that overcharging or overdischarging won't harm the storage battery.
Advantages
1: Easy installation
Without complex new wiring, installing a solar street light is easy and convenient. It merely requires a battery hole and a concrete foundation. The installation doesn't need a lot of labourers, supplies, or money.
2 - Energy-efficient and ecologically responsible
Without using any power, the solar street light transforms sunlight into electricity. It doesn't emit any radiation or pollutants, which is in line with the current idea of environmental protection.
3 Sturdy and secure
Because solar street lights do not use alternating current, they do not have hidden safety dangers as regular street lights may because of building quality, ageing materials, and power supply problems. Due to the developed manufacturing technique, the majority of solar modules on the market now have steady performance for at least 10 years. They are capable of producing power for up to 25 years.
4 High technology and affordable maintenance
The solar street light, which is controlled by a solar charge controller, may change the amount of light it emits in accordance with ambient brightness and user demand. Traditional street lights have substantial maintenance costs in distant areas. The solar street light, however, simply requires cyclical examination, therefore the cost of maintenance is rather modest.
Disadvantages
The use of solar energy will expand due to the conventional energy scarcity. In recent years, the solar sector has seen rapid growth. Numerous settings have been used using solar street lights. However, there are numerous obstacles that limit the use and promotion of solar street lighting.
1 - A substantial upfront investment
The input cost is one of the variables. The cost of a solar street light is high initially. The assessment indicates that installing a solar street light will cost three to four times as much as installing a conventional street light with the same efficiency.
2The storage battery's lifespan
Typically, it takes a storage battery more than a year or even half a year to fully charge. Some of them may have a practical charging efficiency of just 50%, which will undoubtedly affect the lighting conditions at night during the days of constant rain. Therefore, while installing a solar street light, it is crucial to choose a kind of high-quality battery.
3. Choosing a solar charge controller
Solar charge controllers on the market come in a wide range of quality. Although it only makes up a tiny portion of the overall cost, the controller is a crucial aspect of the light.High-quality solar charge controllers for street lights are offered by BENWEI. Both local and foreign buyers like the items.
(1) The controller operates continually throughout the day. There will be some energy waste if the power usage is excessive. Consequently, it is preferable to use a solar charge controller whose power consumption is less than 1 mA.
(2) The controller's MCT charging mode allows it to automatically monitor the solar panel's maximum current. In the winter or during periods when there is less sunshine, this charging option is 20% more efficient than other charging modes.
(3) The controller that uses two circuits for regulation may save energy and prevent waste. One or both circuits will automatically be turned off at night when there are fewer people around.
4 .The poor conversion effectiveness
Solar panels have a conversion efficiency of around 15%–19%. The conversion efficiency of silicon solar panels may reach up to 25% theoretically. However, the surrounding structures will have an impact on its efficiency.
5 . Geographic and climatic conditions
Because solar electricity is generated by the sun, the geographic and meteorological circumstances have a direct impact on the solar street light's illuminating quality. Continuously gloomy and rainy days will have an impact on the illumination, thus the level of illuminance or brightness is below the required level. Even worse, the solar street light is inoperable.
In summary, the photovoltaic business will continue to grow quickly in the years to come. Solar street lights will be used much more extensively as technology advances and is upgraded.
