The summer file of 2023 is still in full swing, and a ten-year "Fengshen Part I" has pushed the summer file to another climax. And outside the play, after years of preparation, a group of "little yellow men" who work live have also continued to perform "Fengshen Part I" belonging to Changsha.
In Changsha, many people say that the life of the summer is given by the air conditioner, but this is only half true. Just imagine, what kind of scene will it be if the cinema suddenly loses power in summer? It is a trivial matter not to watch a movie, but it is really terrible if the air conditioner stops.
In order to keep everyone cool and cool this summer, Changsha has made careful preparations for many years, and only then has the "magic work" of less power outages and continuous power this summer.
Why can you "confess the gods" without electricity? This starts with why the city has a power outage.
The reasons for urban power outages can be divided into two types. One is sudden, such as extreme weather causing system paralysis, equipment aging or failure, insufficient capacity and overload, etc.; the other is planned, such as power grid Upgrade, expand and overhaul equipment, etc.
Therefore, regardless of natural force majeure, if we want to achieve continuous power supply in cities, the first thing is to have more sufficient and reasonable equipment for urban power generation and transmission resources, and the second is to realize "live work". The former is to avoid sudden power outages, while the latter is to reduce or even cancel planned power outages.
Let me first reveal a set of data to you: Since the summer of this year, the live-line operation company of State Grid Changsha Power Supply Company has an average of more than 20 on-site operations every day, and the total number of tasks per week is more than 150. In June, Changsha live-line work completed a total of 743 operations, with an additional power supply of 2.497 million kWh.
In other words, in June alone, Changsha's live-line work provided users with an additional 2.497 million kilowatt-hours of electricity. Calculated based on the energy consumption of one air conditioner, the 2.497 million kilowatt-hours of electricity can be enough for one air conditioner to blow for 2.497 million hours, and for 10,000 air conditioners to blow for 249.7 hours. It seems trivial to stop power for one minute, but it will accumulate sand into a tower . Behind the live work is definitely a major event that benefits Changsha City.
So, what exactly is "live work"?
As the name suggests, it actually refers to the power workers testing, maintaining, replacing parts, and dealing with defects on live equipment without power outages, so that most residents can complete power maintenance without feeling that there has been a power outage.
In fact, live working in my country has not been around for a long time. Since 1958, with the efforts of generations of electricians, the technology of live-line work has gradually matured and has become a common way of operation.
In layman's terms, in the event of a failure in the city's power distribution network, in order to ensure that most users can continue to use electricity, live work is to temporarily perform a "heart bypass operation" on the power line, using a "large power bank" Do a good job in the temporary connection of power lines, and finally allow power equipment maintenance personnel to work in the event of a power outage, allowing residents to use electricity normally.
So, how to link the temporary "charging treasure" with the main line without interruption of power supply? How can the residents on the main line not perceive the switching of the circuit? This is a professional and dangerous business. Also because of such characteristics, live working workers are called the surgeons of the power distribution network, and they can be called "special soldiers" in the field of power work.
Under normal circumstances, to carry out live work safely, three conditions must be followed: the current flowing through the human body does not exceed the human perception level of 1mA; the local field strength of the human body surface does not exceed the human perception level of 2.4KV/cm; the human body and the charged body Keep the prescribed safe distance. At the same time, the staff must take strict protection measures, including wearing insulating caps, insulating gloves, insulating shoes (boots), insulating sleeves (sheaths), insulating shawls, insulating clothing, using insulating ropes, insulating booms, and insulating bucket arms. tools such as cars. As the voltage level of live lines increases, the protection requirements will also increase accordingly.
It is precisely because of this reason that in order to ensure the safety of live workers, no matter in winter or summer, after putting on a complete set of protective equipment, the whole body will be soaked due to staying in a hot and airtight space for too long, and the physical fitness is good. It has also become the most basic quality of live working staff.
At present, after electricity has become an important driving force for urban development, the ability of live working will directly affect the electricity business environment. Being able to provide enterprises with stable electricity is also the main characteristic of a city's first-class business environment. In such a situation, the better the city develops, the more it needs a group of liveline workers who are highly skilled, willing to endure hardships, and willing to take risks.
What is the current level of live working in Changsha?
Let me show you another piece of data. According to statistics, a total of 3,636 live-line operations will be carried out in Changsha in 2021, with an additional power supply of 16.7196 million kWh and a reduction of 117,400 households during power outages. In 2022, a total of 6,032 live-line operations will be carried out, increasing power supply by 18.07 million kWh, and reducing 432,000 households during power outages.
At the same time, Changsha live-line workers also frequently won national competition awards.
So, how did Changsha achieve such a breakthrough in the field of live working? Emphasis on training and training, using projects to promote the improvement of the ability of Changsha's live-line operation team, and actively embracing the power of science and technology is the magic weapon for victory.
The innovative application of "bridging method + load transfer + bypass operation" comprehensive non-stop operation method successfully completed the double-circuit 110 kV transmission line infrastructure construction task, filling the gap in the new technology of non-stop operation in the province.
Undertaken 6 sessions of Changsha Liveline Work professional technical training courses for 3 consecutive years, accumulated practical experience in complex liveline work, promoted the full-project and diversified development of liveline work, and improved the professional self-management ability of liveline work. Adhere to the competition to promote training and training, cultivate and produce 2 national "technical experts in the electric power industry", and use the industry experts as a benchmark to vigorously cultivate professional reserve forces to create a first-class live-line operation team with sustainable development.
In 2022, Changsha's live-line work successfully completed the non-stop disconnection of the lead wire on the 10 kV Zhen'an Line 085-2 pole, using the core "black technology" of the live-line work robot's visual recognition, motion control, and three-dimensional environment reconstruction. Efficiently completed tasks such as independently identifying the position of the lead wire, grasping the lead wire, and stripping the wire, greatly reducing the labor intensity, improving the safety of live work, realizing safe and controllable on-site operations, and comprehensively building the core competitiveness of professional technology.
In 2023, on the 10 kV Zhusha bridge line of Chuanhe Road by the Liuyang River, Yu Hui, a representative of Changsha's live-line operation, as the first operator in Changsha, remotely commanded the "mechanical little yellow man" to flexibly rotate two The "arm" scans the on-site operating environment, accurately identifies the wires, and determines the operating location... Afterwards, Yu Hui and his friends organized the construction of the "10 kV live and withdrawn multi-circuit pole lifting wire combination tool" and "10 kV cable Innovative projects such as "New Method and Application of Line Non-stop Operation" have been implemented successively, and 8 provincial and national patents have been successively obtained. Among them, the national patent of "Devices for Breaking Corroded Nuts in Power Emergency Repair" has been extended to the whole country.
In view of the good economic and social benefits brought by live work, more and more big cities want to do a good job in live work. However, live work itself is a technical task, and workers have to face objective challenges such as high altitude and high voltage. Therefore, for enterprises engaged in live work, it is the top priority of development to discover and cultivate compound operation talents who integrate operation, analysis, calculation and summary.
In order to better build and improve the talent team for live work, the State Grid Corporation of China has organized and carried out the National Distribution Network Non-stop Operation Skills Competition year after year. In a recent competition, Yu Hui, the monitor of Changsha non-stop power supply operation class, won the first prize of the 10 kV individual first prize.
This brilliant achievement has brought many people's attention back to Changsha, the "city that never sleeps", and the reputation of "city that never sleeps" is inseparable from the contribution made by State Grid Changsha Power Supply Company in live operation.
According to relevant materials, by firmly grasping the development opportunities of Changsha's "Smart Distribution Network Three-Year Action Plan" and "Warning the Distribution Network", Changsha's live-line operation has seen a steady increase in the number of operations in the past three years, with an average annual growth rate of 38%. In the first half of 2023, a total of 2,912 uninterrupted power outage operations were carried out on the distribution network, with an additional power supply of 8.6796 million kw h and a reduction of 175,800 households during power outages.
State Grid Changsha Power Supply Company's live-line work insists on achieving historical breakthroughs in the pursuit of development, and has achieved full bloom in personnel training, technology application, and program innovation.
This team always attaches great importance to the cultivation and construction of high-level practical talents, insists on improving employees' ability to take responsibility in job practice, implements skill training and job requirements, and combines professional learning with on-site practice. During the year, 70 team trainings were carried out, with a year-on-year Increased by 56%. Through competition to promote training and training, live work has produced two national "technical experts in the electric power industry", and with the industry experts as the benchmark, continue to expand advanced publicity and influence dissemination.
At present, there are 25 employees in Changsha live-line work, including 19 party members, accounting for 76%. Among them, there are 1 State Grid craftsman, 11 senior technicians, 7 technicians, 1 State Grid company technical expert, 1 provincial company second-level leading expert, 4 State Grid company A-level bid evaluation experts, and State Grid company distribution network. There are 2 members of the power outage operation cooperation team, 2 technical experts in the national power industry, 21 innovative achievements, and 14 national invention patents.
While cultivating talents, Changsha Live Work also always attaches great importance to technological innovation and uses advanced technology to reduce the burden on live workers. For example, live working robots use the core technology of human-computer interaction to realize efficient collaboration between robots and operators. The operator only needs to touch the screen with a tablet on the ground, and the robot will recognize the actual position of the electrical equipment, form a 3D model in the "brain", and direct the two insulated "arms" to flexibly grab and replace different tools, so as to achieve high-altitude Complete operations such as robot wire stripping, wire grabbing, and double-arm collaborative threading.
In addition, Changsha live-line work has carried out reforms and innovations in the mode to minimize losses as much as possible. On April 7, 2022, on the No. 518 pole of the 10 kV Newspaper Line and the No. 012 pole of the Tantouping Line, the "plus" mode of live work of "bridging method + load transfer + bypass operation" was innovatively applied to ensure that users during construction With "zero loss" of electricity consumption, the double-circuit 110 kV transmission line infrastructure construction task has been successfully completed, adding assistance to the construction of Changsha's international advanced distribution network city.
Over the years, live working has realized the transition from a single operation rod project to operation with shielding clothing, and then to operation with insulating clothing. From the more dangerous manual operation to the safer insulated arm truck operation, it not only ensures personal safety, continuous operation of equipment, but also ensures the continuous light of millions of users.
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From the time the street lights came on, people started to get busy, and when night fell, the speeding vehicles and pedestrians decreased, and the whole city gradually became quiet. Although the busy day has come to an end, there are always live workers behind it. It is because of their dedication and dedication that the smooth operation of a city can be achieved.
From street lights to transportation, daily electricity consumption is the cornerstone of residents' lives and industrial development, and its importance cannot be ignored. Only by ensuring the stability of power supply, residents will not be troubled by power outages in their daily lives. Only by ensuring the stability of power supply can we provide a good business environment for enterprises developing in Changsha, and will not suspend the company's operations and interrupt the tense and orderly production and manufacturing of enterprises due to power outages.
Recently, the State Grid Changsha Power Supply Company is also carrying out the theme activity of "Less outage for one minute, benefiting Changsha City", aiming to reduce or even stop power outages in Changsha City through various means and measures of electric workers. We look at this activity from point to surface. When the most microscopic link is guaranteed, the quality of life of residents in Changsha and the production efficiency of enterprises will be further improved, and then the overall development of Changsha will be promoted.
It is these ordinary but extraordinary front-line power workers who, with sweat and tenacity, have built a solid power barrier, providing a steady stream of energy for this "summer epic" in Changsha, and jointly composing the magnificent epic of Changsha. The opening chapter of "Fengshen".
Source: Songuo Finance