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UHVDC underground substation Analysis

Changji-Guquan UHVDC Transmission Project - NS Energy Changji-Guquan ultra-high-voltage direct current (UHVDC) transmission line in China is the world's first transmission line operating at 1,100kV voltage. Owned and operated by state-owned State Grid Corporation of China, the 1,100kV DC transmission line also covers the world's longest transmission distance and has the biggest transmission capacity globally.

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