China Southern Power Grid applied carbon fiber composite core conductors for the first time in 500 kV line engineering

Recently, one of the key projects of China Southern Power Grid Corporation, the 500 kV Luo North A B Line (Foshan Section) capacity expansion and transformation project, with a total length of 1098 meters of carbon fiber conductor has been successfully erected
.
This is the first time in the South Grid that stranded carbon fiber composite core conductors have been implemented on a 500 kV voltage level line project
.

It is reported that the 500 kV North A and B Line capacity expansion and transformation project is one of the projects to implement the requirements of the Guangdong Provincial Party Committee and the provincial government and fully guarantee the power supply of Guangdong Province, the construction of the project can effectively alleviate the power supply pressure from west to east of the province before the completion and operation of the western section of the outer ring of the target grid frame, improve the power grid in Foshan area to withstand natural disasters, ensure the power supply of important loads in Foshan and surrounding areas under emergency conditions, and create conditions
for the exchange support capacity of the east-west section.
The project is scheduled to be completed by March 30 this year
.
At present, Foshan Power Supply Bureau has comprehensively promoted the progress of project construction, launched the coordination mechanism of daily attack, and timely dealt with the problem of youth compensation and material arrival that affected the progress of the project, and the overall progress of the project has been completed by 65%.

According to reports, carbon fiber wire has the advantages
of light weight, high strength, high temperature resistance, corrosion resistance and large ampacity.
However, at the same time, carbon fiber conductors also have the characteristics of weak bending resistance, which puts forward higher requirements
for on-site construction technology.

In order to further strengthen the on-site construction management of carbon fiber conductors, the project established an on-site construction headquarters with the general manager of the infrastructure department as the general command, organized and compiled the special construction plan for carbon fiber conductors, and conducted a centralized review at the first meeting of the Luobei A and B Line Safety Committee, equipped with special tools, and made visual management and arrangement
of the main points of operation at the construction site.

"We have also invited experts from carbon fiber conductor manufacturers to the site for internal training many times, and the on-site guidance and internal training have achieved remarkable results, both the skill level of personnel and the control level of the construction process meet the requirements, laying a solid foundation
for the successful erection of carbon fiber conductor.
" Ren Yajun, deputy general manager of the infrastructure department of Foshan Power Supply Bureau, said that the bureau plans to summarize relevant management and construction experience, compile carbon fiber conductor construction operation instructions, and provide replicable and generalizable models for similar construction operations in the future
.

The capacity increase and transformation project has a tight construction period and heavy tasks, which puts forward higher requirements
for project construction and material supply.
"For example, the supply time requirements of tower materials are more than 40% shorter than the normal performance cycle, but we face multiple difficulties in the process, such as the mismatch between the project design progress and the material subscription shuttle, the sharp increase in the price of materials and raw materials, and the repeated new crown pneumonia epidemic
.
" Lu Zhiguang, deputy general manager of the supply chain center of Foshan Power Supply Bureau, said
.

To this end, the supply chain service center of the bureau takes the "pioneer of party members" as the carrier to intervene in advance and take the initiative
.
Through the close linkage of the three levels of party branches of the network, province and local supply chain, accelerate the collection, review and distribution of material demand, and accelerate the bidding and procurement
of special materials.

At the same time, the supply chain service center of the bureau contacted multiple parties, coordinated 29 suppliers within one month, and obtained 119 supply agreements
.
"We also coordinated the supply of materials twice with more than 10 people, including China Southern Grid Supply Chain (Guangdong) Company and the Infrastructure Department of Foshan Power Supply Bureau, covering a total of 8,000 kilometers and completing the supply of 66 million yuan
.
" Zhong Xiaohua, Supply Chain Center of Foshan Power Supply Bureau, said
.
The final supply of tower materials was more than 20 days ahead of schedule, and the cable was 20%
earlier than the normal performance cycle.