“Please start construction work on site and pay attention to construction safety.†On May 23, with the instructions issued by the on-site commander, the last base high-voltage tower of the administrative sub-center of Beijing City Sub-center was completely demolished, marking the core of the administrative center of Beijing City Sub-center. The completion of the district's supporting power projects ahead of schedule will not only provide a strong and reliable power supply service guarantee for the smooth relocation of the administrative office, but also make the smart distribution network in the region a world-class demonstration.
"Today we dismantled the last high-voltage tower in the administrative office area. The base tower is 68.5 meters high and weighs 96 tons. After the tower is demolished, the high-voltage line in the administrative office area will be completed." On the construction site, the State Grid Beijing Wang Shuangqing, the person in charge of the overhead center of the maintenance company, told the China Electric Power News reporter.
High-end smart distribution network formation demonstration
“We have implemented a number of power facilities renovations, and also built the first three 110 kV substations, eight switchyards and 23 power distribution rooms for the administrative office area. All of them have been completed and put into operation, and the administrative office core area The world-class high-end intelligent distribution network structure has been formed, laying a solid foundation for providing stable and reliable power supply in the region.†Wang Xiaofeng, Director of Construction Management Department of State Grid Beijing Electric Power Company, was interviewed by China Electric Power News reporter Said.
According to the reporter's understanding, the high-voltage line reconstruction project of the administrative office area of ​​the Beijing City Sub-center has lasted 857 days since its launch in 2016, and has been fully completed so far. Focusing on the development orientation of Beijing's urban sub-centers, adhering to the concept of “safe and reliable, high-quality and efficient, green, low-carbon, intelligent and interactive†distribution network construction, in less than two and a half years, Beijing Power completed the construction of the main distribution network ahead of schedule. The task of building all supporting power facilities within the power relocation.
“Beijing Power uses world-class high-end equipment to build a world-class grid structure, surpassing Singapore, Paris and other advanced cities. The “double petal†power supply method surpasses these two cities, and the power supply reliability rate can reach 99.9999%, with an average annual power outage. The time is less than 21 seconds, reaching the international leading level. A world-class high-end intelligent distribution network demonstration zone with more than 10 international top grid technologies has been built, which fully meets the conditions for the relocation of the administrative office core area.†Lai Xiangsheng, deputy general manager of Beijing Electric Power Introduction.
High-tech power pipe racks operate reliably
What advanced technologies and equipment are used in the world-class high-end smart distribution network demonstration area to operate? With these questions, the reporter went to the electric power cabin of the Beijing City Sub-center Administrative Office to learn about the powerhouse in Beijing.
“Beijing is the first to launch the “Smart†integrated pipe corridor planning and construction in the core area of ​​the administrative center of the city's sub-center. In the first phase of the construction of the “two horizontal and three vertical†12-kilometer integrated power corridors, the power cabins were all in March this year. Up to now, the total length of the cable has reached 175 kilometers.†Shang Bo, deputy general manager of the State Grid Beijing Tongzhou Power Supply Company, told the China Electric Power News reporter that all the core areas of the administrative office use the cable power supply method of the integrated pipe gallery. The construction standards of a hundred years have created an underground power passage that is “extending in all directionsâ€.
Beijing Electric Power has deepened the design concept of the most advanced concept, the highest standard, the best quality, highlighting the green, low-carbon and sustainable development of the comprehensive management corridor of the administrative office area, and built the first comprehensive comprehensive corridor in China. Compared with the traditional power tunnel, the cable power supply system has a capacity increase of 1.5 times and a structural design life of up to 100 years. It has independent operation and maintenance and repair channels.
The reporter noted that in the integrated powerhouse of the pipe gallery, the world's first self-developed manned inspection equipment applied to the power pipe gallery was deployed to completely solve the problems of transportation difficulties in repairing materials and labor intensity of manual inspection of powerhouses. Each pipe gallery is equipped with inspection and fire-extinguishing robots. The inspection robots have real-time monitoring functions such as infrared temperature measurement, real-time monitoring of visible light video, toxic gas over-limit alarm, and environmental conditions. When the inspection identifies the fire danger of the corridor. The fire extinguishing robot can be linked to the fire position, and the dry powder fire extinguishing bomb is detonated to achieve active fire extinguishing. At the same time, temperature measurement and vibration cables were laid on the outer layer of the 220 kV cable to monitor the abnormality of the cable surface temperature and cable vibration status in real time. All the automated monitoring information in the integrated power corridor of the pipe gallery will be transmitted back to the Beijing Electric Power Comprehensive Visualization Platform in real time to realize online monitoring of the staff and improve the lean management level of the equipment.
"The development and application of a series of high-tech means make the operation and maintenance of cable equipment in the pipe gallery more intelligent, which greatly guarantees the safe and reliable operation of the power grid in the region. The world-class intelligent distribution network has safe and reliable operation and strong interconnection of grids. With advanced equipment standards, lean operation and high efficiency, the whole element reflects the world-class energy Internet development concept and supports the construction of a world-class harmonious and livable city. Lin Tao, deputy director of the Beijing Electric Power Company's Transportation Inspection Department, told the China Electric Power News reporter.
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