新世纪我国电力工业已进入以建设三峡电站为契机，推进大区互联进而建设全国统一的联合电网新阶段。 　　“西电东送”必然极大的推动全国联网，全国联网立足于跨大区电网之间以及大区电网之间以及大区电网与独立省网之间的互联。以三峡电站为中心，建设东西南北四个方面的联网 In the new century, China’s electric power industry has entered the new phase of constructing a nationwide unified power grid by taking advantage of the construction of the Three Gorges Power Station to advance the interconnection of large regions. “West-to-East Electricity Transmission” will inevitably greatly promote nationwide networking. The national network will be based on the interconnection between large-scale power grids and large-area power grids, and between large-area power grids and independent provincial networks. Taking the Three Gorges Power Station as the center, building the four aspects of the East, West, South and North