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From the existing expenses, "æŠ ", "subtract" for ultra-illuminated projects, "cut" for unreasonable light sources, and focus on "control" in operation...Liaoning City, Dalian City Construction Bureau Street Light Management Office relies on foothold The internal tapping method has taken a new path of energy saving in urban lighting without increasing or decreasing the cost. According to statistics, since 2003, the total energy consumption of new urban lighting systems has been reduced by more than 50% compared with the original standard, and the original urban lighting system has saved more than 15% of electricity consumption.
As the only urban lighting engineering construction and management department in the city, Dalian Street Light Management Office undertakes the management tasks of more than 110,000 street lighting design, construction and maintenance in the city. The street lighting management covers an area of ​​more than 200 square kilometers, and the total length of power supply lines is more than 1,120. Kilometers. The Street Light Management Office puts the foothold of urban lighting energy conservation on the goal of energy saving from the existing conditions through internal tapping and transformation:
A glimpse of â€œæŠ â€ means â€œæŠ â€ from the existing fees. The annual allocation to the street lamp management office in the city is only the basic maintenance cost and the special renovation cost of 2 million yuan. The new urban lighting system is subject to the bidding procurement and installation grant. The street lamp management office carefully calculated the cost of the special renovation, and at the same time, 30% of the funds were squeezed out of the basic maintenance costs for energy-saving renovation projects. In the project transformation, they insisted on the principle of doing more with less, trying not to replace or replace the high-cost base lamp as a whole, and investing the cost in the update of the base lamp, and the investment on each lamp is not big but The parallel capacitor with significant effect compensates, saving cost and reducing reactive power loss. With this limited fee, the Street Light Management Office has implemented energy-saving renovations for most of the streetlights in the city.
Second, "minus", that is, "reduction" of street lamps with unreasonable energy. In 2005, street lamp management formulated the “Eleventh Five-Year†lighting plan for the city with both reasonable illumination and energy conservation. According to this plan, the city's streetlights are based on the implementation of the “reduction†type of energy-saving retrofits, and adopt three simple and easy methods: one is to reduce the light source. In the past, street lamps on both sides of the main roads in the city consumed electricity, ranging from 500W to 800W. The illumination was unreasonable and wasted energy. Now it is generally changed between 250W and 400W. With this one alone, it can save more than 40%. The second is to reduce the light source. Under the premise of not affecting the illumination, except for the Yingbin Road and the main road, most of the road sections are changed from dual light sources to single light sources, which saves a lot of electric energy. At the beginning of this year, the street lamp management office carried out a single-light source transformation on the 5-km long Xiangzhou Road, which saved 200,000 yuan in electricity costs in one year. The third is to reduce the base light. The lantern is a famous landscape lamp in Dalian. Although all of them use energy-saving lamps, it is still not worthwhile to use. The street lamp is based on the principle of being beautiful and energy-saving, retaining the lanterns on the welcome section, and the removal of all the other sections from the 360 ​​base of the year to 156 bases, only during the welcome, celebration and festival, and It is closed at midnight.
Sanchao "control", that is, the operation process strengthens control management. As early as 2001, Dalian City launched the "Street Light Wireless Monitoring and Management System" to implement all-weather, full coverage monitoring and management of street lights in urban areas. The system utilizes wireless transmission mode, uses computer system to remotely control, remotely measure and remotely sense the switch, operation status and fault monitoring of street lamps, realizes remote control switch automatic management and automatic detection of street lamps, and achieves energy saving purposes by intelligent control. At the same time, they also adopted a flexible control method, respectively, using a single-light controller and a midnight controller—in the middle of the night, the control center issued a control command to turn off the side light source of the road section, which also effectively saved energy. Qin Hai, director of the Dalian Street Light Management Office, said with confidence that using energy-saving and energy-saving spirits to save energy will make the road wider and wider.
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