Li Xinghua: LED is expensive to install but will be cheaper than high pressure sodium lamp

Electric LED lights on the road...

Li Xinghua, Director-General of Guangdong Provincial Department of Science and Technology, interviewed by Yangcheng Evening News said that LED street lamps will be cheaper than high-pressure sodium lamps in the future

After the newspaper’s news report on LED street lamps came out of the street, it caused many readers to care—how about the use of LED street lamps in Guangdong? Guangdong LED future industrial development road how to go?

"LED lamps have a long life span and are energy-saving and environmentally friendly," Li Xinghua, director of the Guangdong Provincial Department of Science and Technology, said in an interview with the Yangcheng Evening News reporter: "From the perspective of the development of strategic emerging industries, we must compete with others to master high-end core technologies. To promote by opening the market."

Is the initial installation costly? Energy saving to repay

Compared with traditional street lamps, LED street lamps are certainly expensive in terms of initial installation costs, but from the perspective of the overall development trend, it will be cheaper than high-pressure sodium lamps.

"It can be said that, compared with traditional street lamps, LED street lamps are certainly expensive in the initial installation cost, but from the perspective of the whole development trend, it will be cheaper than high-pressure sodium lamps." Li Xinghua came straight to the point to respond to the "high price" problem.

Taking Chancheng District of Foshan City, which has used LED street lights, as an example, when LED street lamps were purchased and installed in March 2009, 210 watt lamps needed 9,000 yuan at the time. After 8 months, the price had dropped sharply to more than 5,000 yuan. cheaper."

Similarly, Dongguan Shipai Town, which has all used LED street lights, also considered an account. When LED street lamps were replaced in 2008, 210 street lamps cost 2.62 million yuan each, and each lamp consumes 13,000 yuan (with connecting seats). By the time of replacing the 2412 street lights in the town and 2,886 street lights in the village in 2009, the cost was only 29.68 million yuan, and an average of 5,600 yuan was needed for each light. “The trial of Shek Pai Town can be said to be a pilot project,” Zhang Derong, director of Dongguan Shipai Town Municipal Center, said frankly: “As for the replacement of LED street lights, there is no need to replace poles and lines. Just replace the lamps.”

At present, most of the LED street lights in Guangdong use the business model of "contract energy management + supply chain management + finance": that is, the government does not spend extra when replacing LED street lights, but enters them through energy management companies in the form of investment, and then Divided from the savings in electricity costs, the streetlights are handed over to the government after the deadline. “In fact, we have concerns at the outset,” said Yang Qingbo, director of the solution center of Guangdong CITIC Energy Supply Chain Management Co., Ltd., who has participated in investing in LED street lamps in Guangdong. “But after really understanding the performance of LED, we were relieved.” The District Demonstration Road, for example, actually saves electricity by 68.49%. After Dongguan Shipai Town replaced the LED street lights, the average saving electricity rate of street lamps from February to August 2009 was 59%.

No industry standard? Custom check system

LED technology is developing too fast. To formulate a unified national standard too early will not guide the industry.

"LED technology is in a stage of rapid development." Li Xinghua faced readers questioning the "LED industry is mixed, no national uniform standards" when the problem explained: "A mature product can only speak standards. But LED technology is developing too fast, too Early formulation of a unified national standard does not guide the industry. However, there is no national standard, which does not mean that there is no bottom line." Li Xinghua pointed out that for the use of LED street lamps, Guangdong Province has introduced a "benchmark index."

The "benchmark index" is not complicated. It is to regularly inspect a number of enterprise products that have been widely applied and widely acclaimed, and obtain a dynamic index representing the level of product innovation in the LED lighting industry, that is, the benchmark index, and then use the benchmark index. The classification of product quality, in a nutshell, is the “fighting down Taiwan” approach—“We don’t specify products in this model, but we can only use good quality products. The top ten products in the region are given priority and cannot enter before. Ten can not be used. This will not only ensure product quality, but also break the regional blockade." Li Xinghua pointed out, "And this standard is still changing, at regular intervals according to the level of development of LED products."

Li Xinghua said that Guangdong is actively promoting the benchmarking system to become a coalition technical standard, and through the benchmarking system, it will continue to analyze the technical development level and market application status of LED lighting products, and strive to play a leading role in the formulation of international standards. . Li Xinghua said that to vigorously develop LED, the market application is the most critical, and the government should start the market. "Mainly public lighting, this part of the resources is in the hands of the government, mainly choose high-power street lighting. This promotion is a crucial part of industrial development, large-scale promotion of the application, this industry will pull up, More companies will be attracted to Guangdong."

LED lamp high life geometry?

One person, a lifetime, with a lamp

"In theory, the lifespan of LED products is 100,000 hours. We often say that one person, for a lifetime, uses a lamp." Professor Wen Shengsheng, Institute of Photovoltaic Materials and Devices, South China University of Technology, pointed out that "In addition to energy saving, Environmental protection, mercury-free, and no UV protection are the biggest advantages of LED lamps.

Liao Yinghai, chairman of Leyu Holdings Co., Ltd., who participated in the installation of LED lights in Shek Pai Township and Guangfo Expressway toll booths in Dongguan, frankly stated: “Our lights have been installed for more than two years and no repairs have yet occurred. There is no problem with the LED. Even if the main line is bitten by a mouse, it will not affect the lights on the entire street.” He also admitted that in the LED street light, the LED chip, lamp head is "longevity", "the only The problem is that our commonly known 'Ciudad' has a short life span of no more than five years." He added: "But the 'Cattle' replacement is very convenient and very cheap."

A document from the Science and Technology Department of Guangdong Province also shows that at present, LED street lights can achieve about 7% light decay for 3 years, and the theoretically estimated lifespan will reach 6-7 years. It is understood that at present, China's LED street lamp products can reach the service life of 100,000 hours, that is, no change for 10 years. Traditional high-pressure sodium lamps need to be replaced once every 1 to 2 years.

11,000 LED street lights = 598 acres of forest

What are the advantages of expensive LED street lamps compared to traditional high pressure sodium lamps? The reporter recently had an exclusive interview with Prof. Luo Yi, Director of the National Key Joint Lab for Integrated Optoelectronics, Department of Electronic Engineering, Tsinghua University. He believes that LED street lamps have a longer life span, better uniformity of the irradiated road surface, and more energy saving and environmental protection.

LED street lights make night safer

At the very beginning, when it became a pilot project for the promotion of LED street lamps, relevant departments in Chancheng District of Foshan received such a complaint. "The LED lights were so white that I couldn't dare go downstairs!" a woman complained faintly over the receiver. “I told her that I might as well ask the police whether it is insecure to see if the LED street light is shining under the city,” said the person in charge, Mr. Xin. Coincidentally, the woman’s husband happens to be a police officer. After learning, she learned that under the illumination of the LED street light, the city’s safety monitoring probe can capture more clear images. In the 110 monitoring center, the road’s pedestrians The face, the license plate passing through the vehicle can be seen clearly.

This magical effect is due to the light distribution technology of LED street lamps. Luo Yi told reporters that street lamps are special lighting because the most important thing is to illuminate the road surface. Traditional lamps emit light at various angles. In principle, it is not possible to form an ideal light distribution that illuminates only the road surface.

In addition, according to common sense, the two lights in the middle of the streetlight will definitely be relatively dark, that is, "the uniformity is not very good." Luo Yi explained: "Simple to take one LED lamp and high pressure sodium lamp, LED is not necessarily lower than the high pressure sodium lamp. However, the street lamp is to save power, is to be placed on the road than." For example, if he wants to solve a certain interval Underneath, the problem of a dim area between the two street lamps may be that traditional high-pressure sodium lamps can reach 400 watts to illuminate, while LED street lamps may achieve such a requirement at 100 watts. It is understood that, at present, Guangdong Province in the LED street light distribution technology in the forefront of the country.

City lighting priority for LED street lights

Many people questioned why the original street lights were good. Why did they have to spend a lot of money on LED street lights?

In this regard, Luo Yi said: "If you have installed a street light, this street light is also very power-saving, then it is not necessary to replace the LED street lamp." However, he suggested that when the city lighting project, should promote the priority change LED street light.

In addition, from the perspective of industrial development, he believes that the government's involvement in support is very necessary. "If you confirm that high-end LED street lights are more energy-efficient and environmental friendly, the government's intervention can boost the development of this industry." He explained that, as a new thing, the use of LED street lamps is definitely more expensive than the traditional high-pressure sodium lamps in the initial stage. "At this time, we are the most It is important to consider cost-effective.” According to Foshan City, Chancheng LED street light pilot data show that the current replacement of more than 11,000 LED street lights, each year will save more than 10 million electricity, saving 8.9 million yuan in electricity, equivalent to the annual increase 598 acres of forest.