上海能源：以220kv系统与国网联络、以110kv系统作为主供电网络、以35kv系统作为配网或辅网

Core Viewpoint - The company has upgraded its power grid to enhance safety, reliability, and economic efficiency in electricity supply [1] Group 1 - The upgraded power grid connects to the national grid through a 220kV system [1] - The main power supply network operates on a 110kV system [1] - A 35kV system is utilized for distribution or auxiliary networks [1]