The first fully assembled substation in Henan Province was built
The masons, miscellaneous workers and carpenters cooperated with each other, and the construction progress and quality were difficult to control due to weather, temperature and other conditions.” At the construction site of Qiliying substation, the relevant person in charge told the reporter that from on-site mixing to factory customization, from on-site construction to precise installation, precast precast cable trenches solved the quality deviation problems caused by weather conditions, site environment, construction personnel’s skill level, and process coordination in all links, and truly realized factory production, split transportation, splicing and ready to use, and improved safety, quality, and progress in all directions.
“In the past, the cable trench was mostly constructed with bricks and then painted.
formulated a “mission statement” and a “road map”, established two indicator dimensions of building and structure assembly rate and building and structure prefabrication rate, developed a list of precast technology promotion and application, a list of technology pilot applications, and a list of technical innovation reserves, and carried out key research in weak areas such as substation equipment foundation, line tower foundation, and power integrated pipe gallery.
At the same time, it has improved labor efficiency, significantly reduced dust and noise, and basically zero construction waste discharge at the construction site.
In order to comprehensively promote the precast construction mode, State Grid Henan Electric Power Co., Ltd.
With the development of modern industrial technology, building houses can be manufactured in batches and complete sets just like machine production.
As long as precast building components are transported to the construction site and assembled.
Recently, with the installation of the last section of cable trench in place, the steel structure, composite wallboard and other modular components of the main control building of Xinxiang Qiliying Substation, the first 110 kV fully assembled substation in our province, have been installed, opening the curtain of a new pattern of precast construction of power grid infrastructure projects.
Nowadays, “assembly construction” is also applied in the field of power grid infrastructure.
It is planned that by the end of 2024, the precast technical reserve list will be promoted according to the technical maturity, and the assembly rate of substation buildings and structures will be 100%, and the precast rate of buildings and structures will be 100%.
It is understood that the company has integrated the production capacity of 2.36 million cubic meters of 15 precast component manufacturers in 6 places of Zhengzhou, Luoyang, Xinxiang, Kaifeng, Jiaozuo and Hebi into the field of power grid infrastructure, promoting the upgrading of upstream and downstream industries, and effectively promoting the high grafting and shifting of traditional industries in the province.
“The main characteristics of assembly construction are standardization, modularization, mechanization and greening.” According to the person in charge of State Grid Henan Electric Power Company, after analysis and comparison, the number of safety risks in Qiliying Power Transmission and Transformation Project has been reduced by 26 and the construction period has been shortened from 210 days to 81 days; The application of 54 new materials and processes has saved 4.2 tons of steel, 200 tons of water and 4053.2 kg of carbon.
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According to a rough estimate of the number of infrastructure projects put into operation in Henan Province of State Grid last year, the procurement cost for fully assembled construction is about 300 million yuan, which can drive the upstream and downstream industrial plants to increase equipment investment of 90 million yuan, 8000 labor and employment posts, material purchase and logistics transportation and other supporting consumption of 200 million yuan, drive nearly 1 billion yuan of capital to circulate smoothly in the provincial economic chain, and play a positive role in stabilizing the economy, promoting employment and ensuring the people’s livelihood of the province.
