Liu Hongji is the foreman of transmission live line operation team of State Grid Hebei Extra High Voltage Company, and the director of Liu Hongji Innovation Studio. In the past 12 years, he has grown from an ordinary power transmission inspection worker to an expert in the field of ultra ultra high voltage live working, and has successively won the National May Day Labor Medal, the National Power Industry Technical Expert, the Central Enterprise Young Position Expert, the State Grid Corporation Model Worker and other honorary titles.
Wearing silver white shielding clothes covered with copper wires, climbing an iron tower of nearly 100 meters with bare hands, stepping on a conductor with a diameter of less than 5 cm, walking high in the air, entering a strong electric field, "zero distance" contact with conductors with a voltage level of 500 kV and above, "The upper part of the body should always be in a prostrate shape. Try to control the height of the body in the space formed by four wires to prevent the head from releasing the pressure of the wire due to being too high above the wire." This is Liu Hongji's work on the ultra-high voltage line Working scene during live working.
Ultra high voltage live working, one of the most dangerous jobs in the world, live working personnel Members are known as the "special vanguard" of the power industry.
Liu Hongji likes the term "spearhead". "Be ready at any time. Every departure is an emergency operation." His team is responsible for the emergency maintenance of more than 8000 kilometers of ultra-high voltage lines in Hebei Southern Power Grid, ensuring the economic development and residents' lives in North and Central China The power "aorta" is unblocked.
"For ordinary residents, power failure may mean that they can't watch TV and have no Wi Fi in a short period of time. In the event of power failure, the loss of the ultra high voltage lines we are responsible for will be calculated in billions." Liu Hongji believes that the most dangerous work in the world has a mission like sacredness Sense.
But the "special vanguard" was not made in a day. Liu Hongji climbed the tower for the first time with Nearly an hour, I had three breaks on the way. Down from the tower, his legs were nailed It was full of blood stasis after hitting the tower material, and the joints of the whole body ached for a whole week.
In the face of the ease of colleagues, the strong Liu Hongji can not let go. "Now that we have identified this line, we must move forward bravely." Liu Hongji has the perseverance and tenacity of the power transmission person, and is more aware of the responsibilities and burdens he bears. He kept practicing climbing the tower during the day Line skills, learn rich theoretical knowledge in the evening, so as to grasp the technical essentials as soon as possible.
In order to improve work efficiency, Liu Hongji disassembled the whole process of tower climbing operation, carefully analyzed each link, how to fasten the safety belt can be reliable and save time, how to place tools for easy access, and finally learned how to replace a single insulator with electricity in 7 minutes skill.
On May 12, 2012, Liu Hongji carried out live line work alone for the first time. When he successfully eliminated defects and got down from the iron tower, his full sense of achievement overcame his fear of overhead wiring. Since then, "climbing the tower", "swinging" and "walking the steel wire"...... 100 meters high above the ultra-high pressure, It became the battlefield of Liu Hongji.
Over the past 12 years, he has participated in nearly 450 live working on 42 circuits, reducing power outages by more than 3000 hours. It is no exaggeration to say that Liu Hongji climbed the tower and took the route on the more than 8000 km ultra high voltage lines of Hebei Southern Power Grid. At a height of 100 meters and within a super electric field of one million volts, he explored, studied, studied and grew step by step in his sweat soaked shielding clothes. With his dedication and hard work, Liu Hongji completed many difficult tasks and finally became his heart "Electric power special vanguard" in mind.
In November 2019, it was found that the spacer was severely damaged on 1000 kV UHV Hequan Line II Serious defects. In the face of harsh operating conditions such as high voltage level, narrow working space, and large coastal air volume, Liu Hongji volunteered to work as an equipotential electrician to enter the electric field for direct operation. After nearly two hours of operation, the line defects were successfully eliminated, which not only filled the technical gap in the field of ultra-high voltage live working in Hebei Province, but also made Liu Hongji the special power of Hebei Electric Power "First person" for high-voltage equipotential live working.
On June 18, 2020, a twin engine light helicopter loaded equipotential maintenance personnel with the hanging basket method slowly approached the ± 800 kV Zhaoyi Line. Sitting in the hanging basket was Liu Hongji's apprentice Gao Zhanglin, who was on the ground to monitor and command the operation. The battle between the master and the apprentice was the first time in the world that helicopters were used to enter the UHV DC line It also marks that China's electrified maintenance technology continues to lead the world.
In January 2021, the cold wave rolls onto the land of southern Hebei with the epidemic. On 21, an iron tower located in the high-risk area of Gaocheng experienced a critical defect of insulator pin coming out. Liu Hongji We went against the team and quickly eliminated four critical defects.
On January 18, 2022, Liu Hongji led the team to participate in the winter Olympic power conservation task. For 56 days and nights, they successfully responded to the challenges brought by low temperature, strong wind, strong snow and other bad weather, and completed the security task safely and efficiently. Liu Hongji was rated as the State Grid Corporation Advanced individual for electricity protection during the Winter Olympics.
Behind the enviable achievements are Liu Hongji's solid basic skills and skills Never stop pursuit.
In June 2014, 500 kV Baiji line urgently needed to replace a large number of zero value insulators. This line has double circuits on the same tower, with large conductor tension, large insulator tonnage and abnormal replacement process Difficulty. During the operation, the hot sun was in the sky, and Liu Hongji wore a "armor" like airtight shield Clothes, like nails, have been "riveted" on the wires for more than two hours, and when they are replaced, 4 Liu Hongji, who climbed down the tower with zero value insulators, almost suffered heatstroke.
"Is there a better operation method that can speed up the replacement process?" The thoughtful Liu Hongji asked the teacher Fu for advice and searched various information online. After dozens of practice and exploration, the new proposal not only effectively guaranteed the replacement and installation quality of the remaining insulators, but also Operation time has been reduced by two thirds.
The improvement of work efficiency ignited Liu Hongji's passion and confidence in technological innovation. Due to careful observation and careful study in daily work, he can always accurately grasp the difficulties and pain points of work every time he makes technical improvements, and plunge into them until he finds a solution. He produced 500 kV anti pollution insulator assembly and disassembly tools, which improved the efficiency of insulator replacement by one third; The 500 kV double circuit Canghua Line on the same tower V series incoming electric field mode and the 500 kV cleaning line drainage line basket incoming electric field operation mode have been designed, which are the first of the ultra-high voltage lines of Hebei Southern Power Grid; The development of "UAV+electric lifting device" will improve The number of empty operators has been reduced to 1, realizing a new breakthrough in live working technology
In recent years, the innovation studio named after "Liu Hongji" has become the innovation and talent training base of Hebei Power Grid. Up to now, the team led by Liu Hongji has completed 52 innovative achievements, won 38 national patents, and won 14 provincial company level and above awards, of which 3 achievements won the second prize of the State Grid Corporation for scientific and technological progress, realizing the special New breakthroughs in live working of high-voltage transmission lines.
Liu Hongji's voice is simple and firm: "I am an electric craftsman, and it is my honor to guard the silver line and the lights of thousands of homes It is my unremitting pursuit to meet challenges and have the courage to make breakthroughs. I will use all my Wisdom and strength, ensure national power and energy security, build a beautiful Hebei Province with strong economy Protect and escort the beautiful picture of Chinese modern Hebei! " (Contributed by Hebei Federation of Trade Unions)
