220kV and below modular intelligent prefabricated cabin substations are a new generation of intelligent substations promoted by State Grid Corporation of China. They have the advantages of safety and reliability, small footprint, short construction period, small and exquisite appearance, long service life, no radiation, low noise, and flexible layout. The main transformer adopts world advanced products, which are safe, reliable, low-noise, leak free, and free of hanging cores; The entire station has no exposed conductors or electrical equipment, and with good enclosure protection, it eliminates the risk of accidental electric shock; The compact layout of the entire station reduces the land area and height by more than 30% compared to civil substations, thereby reducing the urban space occupancy rate; All equipment in the substation adopts the modular design concept of building blocks, and each module realizes factory production and assembly construction. The on-site civil engineering workload is reduced by more than 70% compared to conventional civil engineering substations, and the equipment installation workload is reduced by more than 80%; Equipment entering the site does not require road closure, and there is no dust or noise pollution during the construction process; The shell can achieve full site color painting, integrate urban theme culture, improve the harmony of urban planning, and blend in with the surrounding environment; The transformer is placed in a prefabricated compartment and the substation noise is reduced to below 40 decibels through firewall technology, sound barrier technology, and electromagnetic shielding technology, meeting the requirements of urban environmental impact assessment and preventing noise pollution to surrounding residential areas; Due to the modularization of substations, they can be flexibly arranged according to the terrain of the site, fully solving the difficulties of land acquisition, construction, and landing of substations in urban centers. This is a new mode of substation construction.
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