LED tunnel light is remarkable in energy saving

  Before Yunnan Dabao highway tunnel, a car is entering the tunnel. At 200 meters away from the tunnel entrance, the vehicle detectors detect the car sensitively, the PLC control system in the tunnel immediately opened the lighting circuit and lights inside the tunnel were all lights up, then the vehicle passed the tunnel smoothly. Another tunnel detected the leave of the vehicle and found no vehicles inside the tunnel, the control system shut down those LED tunnel lights to avoid unnecessary energy consumption. Experts say, LED tunnel lighting has achieved good energy saving effect. On the one hand it is due to the semiconductor light-emitting diode its own characteristics of high luminous efficiency and low power consumption; on the other hand it is because the brightness of LED lamp is adjustable. You can adjust light levels inside the tunnel to meet the lighting needs of drivers, thus led to the tunnel lighting control technology and the remarkable energy-saving effect.

 LED tunnel light is remarkable in energy saving

  Tunnels in Yunnan has implemented 3 transformation of energy saving technology, that is, LED lighting technology, power supply and distribution system with active power filter technique and nighttime vehicle sensor lighting control systems. The project uses 858 sets of LED lighting with a total of 51.64 kilowatts to replace the original 770 sets of high-pressure sodium lighting with 146.19 kilowatts, which effectively reduces energy consumption; active filter device reduces the equipment damage caused by instability of the quality of power supply; the use of night lighting control systems with vehicle sensors can not only ensure the lighting requirements of the passing vehicles but also reduce the invalid lighting when no vehicle passes. Compared with the high pressure sodium program, the comprehensive energy-saving rate can reach 66%.

  Currently, LED lighting and control technology based on real-time traffic have been applied in many tunnels in Anhui Luan to Wuhan Expressway, Beijing-Taipei Expressway and Shanghai-Chengdu Expressway. Statistics show that the overall energy saving can reach 40% to 80%.

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