LED has become the development trend of tunnel energy-saving lighting1

With the construction of expressways in our country advancing from the eastern plain to the western mountainous area, tunnels are widely used in the construction, but the traditional tunnel lighting method consumes a lot of energy. adopting new technologies and new products to reduce tunnel lighting energy consumption has become a development trend. To this end, the Ministry of Transport has promoted LED lighting systems on a number of highways in Yunnan, Hebei, Guangxi, etc. , realizing the lights on the car and the lights on the car, and achieving obvious energy-saving effects. A car is driving into the tunnel in front of the Madaozi tunnel on the Dabao highway in Yunnan. The vehicle detector sensitively detects the car 200 away from the entrance of the tunnel. the PLC control system in the tunnel immediately turns on the lighting circuit, and the LED (Semiconductor light emitting diode) The energy-saving lamp lights up, the vehicle smoothly enters and leaves the tunnel, another tunnel mouth detects that after the vehicle leaves, it is found that there is no vehicle in the tunnel, and the control system turns off the lighting. unnecessary energy consumption is avoided. Experts said that LED tunnel lighting has achieved good energy-saving effect, on the one hand, thanks to the characteristics of high luminous efficiency and low power consumption of semiconductor light emitting diodes. On the other hand, the brightness of the LED lamp can be adjusted, and the brightness of the tunnel light can be adjusted in time to meet the lighting needs of the driver, thus triggering the tunnel lighting control technology, and the energy saving effect is remarkable. The Madaozi tunnel in Yunnan has implemented three energy-saving technological transformations, including LED lighting technology, active filter technology for power supply and distribution system and night vehicle induction lighting control system. The project uses 858 sets, a total of 51. 64 kw led lighting replaces the original 770 sets, totaling 146. 19 KW high pressure sodium lamp lighting, effectively reducing power consumption; The active filter device reduces the damage of electrical equipment caused by unstable power supply quality. The vehicle induction lighting control system is enabled at night, which not only ensures the lighting requirements for vehicles to pass, but also reduces the invalid lighting when no vehicles pass. Compared with the original high-pressure sodium lamp scheme, the comprehensive power saving rate can reach 66. It is understood that Hebei Jingcheng Expressway will replace the existing 1957 high-pressure sodium lamp light sources of Qiuwo beam tunnel, yinjiagou tunnel, Hejiagou tunnel, Tagou tunnel and Tagou No. 2 tunnel with LED energy-saving light sources. since the project was put into operation, the average monthly power saving is about 4. 50 thousand degrees, annual power saving 540 thousand degrees. At present, LED lighting and real-time traffic control technology have been applied in many tunnels such as Anhui Lu'an-Wuhan Expressway, Beijing-Taiwan Expressway and Shanghai-Chengdu Expressway. Statistics show that can save electricity 40 to 80.