Which is better, solar street light or ordinary street light?

Which is better, solar street light or ordinary street light? Solar street light or ordinary 220v AC street light, which one is more economical?

1. Working principle: ① The working principle of solar street lights is that solar panels collect sunlight, and the effective daylighting time is about 10 am to 4 pm (take the northern summer as an example), which converts light energy into electric energy , The electric energy is stored in the prefabricated colloidal battery through the controller. When the sun goes down and the light is insufficient, which causes the lighting voltage of the solar panels to be lower than 5 volts, the controller will automatically activate the street lights and start lighting. ②The working principle of the 220v street lamp is to connect the main line of the street lamp in series from the ground or underground in advance, and then connect it with the street lamp line, and then set the street lamp lighting time through the time controller.

2. Scope of application: solar street lights are suitable for areas with scarce power resources. Because some areas are affected by factors such as environment and construction difficulties, it is more appropriate to choose solar street lights in this situation, and some rural areas and highway centers are isolated If the main line is overhead in this case, it will be exposed to factors such as sun exposure, thunderstorm and electric shock, which will easily cause damage to the lamp or excessive aging of the wire to cause a circuit break. If you go underground, you still need high pipe jacking costs. At this time, solar street lights become the best choice. Similarly, 220v street lights are a good choice in areas with sufficient power resources and convenient line connections.

3. Service life: In terms of service life, if you use LED street lights with the same brand and the same quality, I personally think that 220v street lights have a slight advantage, because the LED street lights themselves are already very energy-saving. At this time, when calculating the electricity bill Although solar energy does not use 220v voltage, which means that there is no electricity bill, the cost of replacing the battery every 5 years or so is much higher than the electricity bill for 220v AC street lamps (only for LED lamps, except for high-pressure sodium lamps).

Fourth, the configuration of the lamp: whether it is an AC 220v street lamp or a solar street lamp, the mainstream LED light source is now, because this light source has the advantages of energy saving, environmental protection, and long life. The lamp poles in rural streets are at a height of 6-8 meters. , Configurable 20w-40w LED light source (equivalent to 60w-120w energy-saving lamp brightness).

Five, their own shortcomings: the shortcomings of solar street lights ① every 5 years or so, the battery must be replaced once. ②Affected by cloudy and rainy days, the battery power will be exhausted and no longer be able to provide night lighting after the battery is generally configured to withstand three consecutive cloudy and rainy days. ③The night lighting time cannot be adjusted online (the lighting time in winter and summer is very different, when you need to change the time, you must adjust it one by one). Disadvantages of 220v AC street lights: ①The LED light source cannot be adjusted in current, resulting in the entire lighting period being full power, which is still full power when not much lighting brightness is needed in the middle of the night, which wastes energy. ②As long as there is a problem with the main cable of the lamp, it is difficult to deal with (underground and overhead are both troublesome). If there is a short circuit, it must be checked one by one. ③Since the light poles are made of steel, the electrical conductivity is extremely strong. If the power is connected in the rainy day, the 220v voltage will endanger life and safety.