Shenzhen Metro's new line construction fully implements LED lighting

At present, the energy consumption of subway lighting accounts for about 20% of the total low-voltage power consumption except for train traction. Reducing lighting power consumption is an important way to save energy. In order to achieve energy saving in lighting, Shenzhen Metro has fully implemented LED green lighting in the construction of new lines. All lights in stations, sections and sections are LED lights. This program not only reduces the operating cost of urban rail transit, but also is an important measure to reduce unit energy consumption and reduce pollution emissions.

According to the design, the lamps in the public area of the new line station are controlled by digital addressable dimming interface (DALI). The intelligent lighting control system realizes stepless control of the brightness of the LED illumination. By adjusting the duty cycle and pulse amplitude of the pulse current, The DC pulse frequency is high enough, so that the LED is always lit smoothly and without flicker, and the P-N junction temperature of the LED can be lowered, the LED light decay can be reduced, and the LED life can be prolonged. The lighting and control system solution increases the vividness of the lighting, extends the life of the light source, reduces maintenance and maintenance costs, and also saves energy.