This year in September, Huzhou, Zhejiang Province for the first time the use of laser remote foreign body purge instrument successfully eliminate 1000 kV UHVDC transmission line analog wire foreign objects, which is the first case in China.
According to reports, windy weather may occur plastic film, sunshade film, fishing nets and other foreign matter winding, hanging in the transmission line conductor problems, easily lead to greatly reduce the insulation performance of the line, causing transmission lines short circuit, resulting in power outages.
At present, Huzhou UHV and trans-regional power lines a total of 11 lines, the line length of 817.7 km, of which 1000 kV line 6 times, ± 800 kV line 2 back, ± 500 kV line 3 back, West to East, the Three Gorges The main collection points for the power transmission and the east-west connection between East China Power Grid and the major corridors sent by Anhui East Power Grid have become the rare power transmission core areas in China with various voltage levels and dense grid distribution. Among them, Huzhou territory within the six special high-voltage lines to East China annually stable transmission 27,682,000,000 kwh.
It is reported that the UHV "Taihu Corridor" west of Changxing County, Huzhou City, east to Nanxun District, the channel length of 110 kilometers, the channel rated transmission capacity of 29.8 million kilowatts. In recent years, the State Grid Huzhou Power Supply Company adheres to both civil defense and anti-countermeasure simultaneously, introduces advanced technologies such as helicopters and unmanned aerial vehicles, and implements the three-dimensional inspection of the UHV Taihu Lake corridor to ensure the safe and stable operation of the UHV in all directions. This year, Huzhou Power Supply Company, Zhejiang Tailun Power Group Co., Ltd. and Tsinghua University jointly developed a laser remote foreign body purifier to add another safety weapon to the safe and stable operation of UHV transmission lines.
Laser remote foreign body remover to laser as the basis, the portable design, by adjusting the optical power and optical power density, the output laser collimated by the lens focusing on the line plastic film, sun film, fishing nets and other foreign matter exposure, the use of laser thermal effects Remove foreign objects, to achieve long-distance, non-contact operation, the maximum effective working distance up to 200 meters, easy to operate, but no damage to the grid equipment.
Compared to the traditional blackout manual operation, this technology enables the elimination of foreign bodies when charged at a 1000 kV high voltage transmission line. At present, UHV 1000 kV transmission line single-circuit transmission load of 5 million kilowatts, the use of this technology can save power line 3.5 hours each time to reduce the power outage of 17.5 million kilowatt hours, equivalent to reducing power outage loss of 8.75 million yuan. The successful application of this technology not only ensures the safe and stable operation of transmission lines, but also improves the operation and maintenance levels of UHV transmission lines, improves the efficiency of hidden danger clearance and reduces the safety risk of aerial work.
Refrigerator Plastic Components
Refrigerator Plastic Components,Fridge Plastic Parts,Freezer Spare Parts,Refrigerator Spare Parts
Jiangsu Ya Guang Metal Products Manufacturing Co.,Ltd , https://www.yaguang-metal.com