摘要
According to the Northwest China Grid Company Ltd, Northwest China will preliminarily build up 750-kV AC backbone network frame covering Shaanxi, Gansu, Qinghai, Ningxia and Xinjiang in the 1 lth Five-Year Plan period, accomplished asynchronous intercotmection with the national UHV network, opened up the transmission passageway from Northwest China to Sichuan and North China, extended DC back-to-back transmission project of Northwest China to Central China and linked the upper Yellow River hydropower base with Shaanbei, Ningdong and Hami coal-power bases. In this period, Northwest China Grid will send electricity to load centers of North China, Central China and East China, while meeting power demand of its own region.