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China's first power transmission operation robot "Dream I" embarked on UHV, power maintenance without power; the country's most advanced measuring instruments automatic intelligent warehousing verification system landed in Hunan, more accurate measurement of electricity; grid anti-ice technology leader in the world , Grid fire prevention and control system to fill gaps at home and abroad ......
Hunan charged test
In the State Grid Hunan Electric Power belongs to the charged operation center, metrology center and disaster prevention and mitigation center, shining everywhere with the glittering of science and technology, spark of innovation, effectively protect the power grid security and the people's interests.
Powered robots, guarding UHV
Line workers at high altitude gives the impression that is both hard and dangerous: tens of meters in the ground to the 100 meters high on the wire, walking with ease walking; if you need to work without electricity, but also wearing a thick Insulated clothes, "steamed sauna" at high altitude
However, in the national network of Hunan live work center training base, the reporter saw a box-like machine: through the wireless remote control, high-voltage wire overhaul, accurately tighten a loose bolts. This is the "I Dream No. 1", the first domestic transmission line operated robot developed by Live Working Center, which was born on January 7, 2015.
"In the past, if there was a problem with the high-voltage line, it was a power outage." Niu Jie, a senior engineer at Live Working Center, said that taking a 110-kilovolt line as an example, stopping a line would affect tens of thousands of households. Especially as the backbone of the global energy Internet backbone UHV, once put into operation it is difficult to blackout maintenance. However, if the manual live work, the operator's skills, physical and mental qualities have to withstand a great test.
Therefore, "Dream I" came into being, it uses a streamlined reconfigurable structure, weighs only 52 kg, can enter a compact line inaccessible personnel, wound on the transmission line of plastic, cloth and other foreign objects charged to remove, Insulators can also be precisely replaced, tighten the drainage board. Press a UHV live work to avoid power outage time calculated 2 hours a year for 25 220 kV live work can be multi-power supply of 10 million kilowatt hours, social and economic benefits.
"In the future UHV live testing line, more advanced live working robots will emerge," Niu Jie said, "Dream II," an upgraded version of "Dream II," is about to go online, enabling autonomous operation without the need for remote Remote control, automatically crossing the obstacles on the road, "Dream III" is also stepping up research.
More than 50 automatic detection, measurement meter to ensure accuracy
Many people care about the smart meters at home in the end after what strict testing, measurement accuracy? Reporter recently entered the national network of Hunan Measurement Center, visited the most advanced measuring instruments automatic intelligent warehousing verification system.
In the lobby of the first floor of the Hunan Office of State Metrology Center, Mendeleev made a conspicuous remark: "Without measurement, there is no science." Into the workshop, the instrument is marked with red and green warning lights, Power meter through the assembly line to complete the verification. From the storage to detect the library, the entire process of automated verification, eliminating human error.
"Accuracy is the life of measurement instruments," said Chen Xiangqun, director of the metrology center. In Hunan, each smart meter must be rigorously tested by the metrology center before it can be installed in a household. The testing items involve measurement accuracy, environmental impact, Electromagnetic compatibility more than 50 items.
After the automated assembly line testing, the measurement center also conducted a manual inspection of qualified products for review. At the same time, the provincial quality supervision department will also check the machine check product 20% for review, to ensure that the meter out from the center of 100% qualified. According to statistics, the center has detected the measurement error of smart meters, much lower than the national standard.
Metrology Center existing six automatic verification assembly line and an intelligent warehousing warehouse, a year to normal test 4.2 million meters. Recently, this fully automatic intelligent warehousing verification system has been appraised as an international advanced level by experts in the industry and is honored as a model made by China in the field of metering.
"We are promoting 'multi-meter one,' residential electricity will be more intelligent and convenient." According to Chen Xiangqun, "multi-meter one" refers to a table can be achieved through water, electricity, gas and other precision measurement and information Remote acquisition and integration, power customers can pay for utilities at the same time with just one mobile phone software.
"Ice Fire Defender" to allow the grid calm disaster
In summer and autumn, Changsha is still hot and humid, while in the artificial climate room of the State Grid Hunan Disaster Prevention and Disaster Reduction Center, the temperature is set at minus 10 degrees Celsius. In a cylindrical laboratory measuring 25 feet in diameter and 27.5 meters in diameter, all electrical equipment is covered with a thick layer of ice. Researchers Hu Jianping into the meantime, could not help but sneezed.
Natural disasters such as ice storm, mountain fire, thunder and lightning, rainstorms and so on have a wide range of impact on the power grid, resulting in serious losses and can easily lead to large-scale power grid collapse and power outage. In 2008, China Southern Power Grid's painstaking anti-ice experience left a painful memory to Dr. Lu Jiazheng, director of Disaster Prevention and Reduction Center. Under his leadership, the center started research on grid anti-icing technologies.
In order to collect the first-hand information on ice at the scene, Lu Jiazheng and technical staff have been stationed in the transmission line ice scene of the alpine mountainous areas such as Shaoyang, Chenzhou and Loudi for three consecutive straight years. In order to solve the ice and snow weather monitoring camera prone to icing problems, we in the low temperature artificial climate chamber conducted more than 300 tests and improvements. In order to solve the problem of harmonics and cost of DC ice melting devices, researchers conducted demonstration on more than ten kinds of ice melting topological programs and issued a simulation calculation report of more than 1000 pages.
At present, the Disaster Prevention and Disaster Reduction Center has developed the first international icing forecast system for power grids and successfully solved the world-wide problem of icing forecast and forecast of power grids. The autonomous monitoring system for icing of transmission lines has been developed independently to provide a clear Information support; invented the first domestic DC ice melting device.
Grid anti-ice series of achievements, won the 2014 national scientific and technological progress prize. The technical achievements have been extended to over 10 provinces prone to ice disasters in the country and successfully coped with 42 different degrees of grid freezing disaster since 2009.
In addition, in order to strengthen the prevention and treatment of hillside fire in the power grid, the key scientific and technological research team of the center succeeded in inventing a fire extinguishing agent with low-flow anti-revergence performance after more than 300 times of formulation tests over 300 days and developed a mobile and efficient fire extinguishing system with a vertical lift of 500 meters platform. At present, the technology has been successfully applied in 26 provinces and cities nationwide.