Shanghai: city lights energy-saving 95%

Reporter learned from relevant departments, Shanghai public road lamps, application of energy-saving light source accounted for 95%, which makes the city an annual saving about 17000000 kwh, equivalent to more than 20 thousand of the annual electricity consumption of households. Reportedly, lighting electricity accounted for 33.7% of the electricity consumption of Shanghai City, and the street lamp is public lighting electricity in one of the largest. In recent years, the city relies on science and technology innovation to create lighting system energy saving, as an important measure to build a conservation oriented society. In Shanghai Municipal Electric Power Company, the reporter saw a public road lamp "list": high efficiency, high pressure sodium lamp light effect is good for a total of 29.9 more than light, in 94.29% of the total 317 thousand and 300 lights in. The source said, to achieve the same light effect, the use of high-pressure sodium lamp power is only 1/5 of incandescent lamp. Last year, some sections of Xujiahui replaced with more advanced low power metal halide lamp, the Bund flood wall around the street lamp is used as a new light source, energy-saving effect is better than the high-pressure sodium lamp. In addition, the semiconductor light-emitting diode (LED), solar energy and other practical energy-saving lamps are also exploring the pilot. In the future, with the further transformation of public road lamps in Shanghai, more advanced energy-saving light source will be used for street lamps. "A good horse with a good saddle, with energy-saving light source, high quality and efficient energy saving lamps also. Although the lamp itself is not power consumption, but its reflective light, light transmittance and so on affect the road lighting efficiency. The utility model has the advantages of good heat dissipation performance, long service life of the light source and the ballast, and reasonable light distribution curve of the lamp, which can improve the overall light output ratio of the street lamp, and ensure the energy saving effect of illumination. In addition to light source, lamps, energy-saving effect of scientific management is also immediate. With the seasonal changes in the opening and closing time, to shorten the time of 20 minutes a day lighting time, in 7, 8, 9 in March can save electricity of 2 million 80 thousand degrees. The road landscape compensation management, on the night lighting and landscape complementary lamps, illumination control at a low level, the night landscape lights off after lights gradually brighter, Huaihai Road to take this measure, saving 20%. Optimize the allocation of street lamp spacing, the surrounding environment is brighter than 23% of the province to set aside the street lamps. In addition, the reactive power compensation of the circuit of the street lamp, the balance of the three-phase current balance of the transformer and the reduction of the power line loss, etc., have been realized in the city road lighting. Intelligent street lamp energy saving control, is a new energy saving technology. Since every night after the city's electricity load is reduced, the power grid voltage is higher than the standard voltage, when the street lights will be super power operation, become unusually bright, dazzling, increased unnecessary power consumption. Intelligent street lamp energy saving control technology through the step-down, voltage, pressure regulation, dynamic optimization of the street lamp lighting intelligent control. On the road traffic is busy at night, the street lamp to maintain a strong illumination, automatic decompression at midnight to maintain a low street lighting. Shanghai city street management of Zhaojiabang Road, Shaanxi South Road on the 72 lamp 250 Watt HPS test in intelligent energy-saving control system under the control of street lamp at night before 11 voltage operation, 11 points to the time of use power saving mode to run off in the morning, one evening, nearly 50 kwh of electricity, energy saving rate of 20.6%. It is reported that the current bridge road, Cao Yanglu, Village Road, Wuning road and other sections of the central line and all the lights have been using this technology. Carefully calculate a bill, if the technology is extended to the city, a year can save electricity about 28 million 510 thousand yuan.

Source: Bo Bo