The Guquan converter station, a critical component of the Changji-Guquan ultra-high voltage direct current (UHVDC) transmission line, has initiated its annual maintenance period. Located in Xuancheng, Anhui province, the station began its 7-day overhaul on October 17, 2025. This maintenance is essential for ensuring the continued efficiency and reliability of the power transmission system that delivers electricity from Xinjiang to East China. The Changji-Guquan transmission line, operational since September 2019, is globally recognized for its advanced voltage level, substantial transmission capacity, and extensive distance coverage. The maintenance work is being carried out by skilled staff members, who are meticulously inspecting and servicing the station’s infrastructure to prevent potential disruptions and maintain optimal performance. This annual overhaul underscores the importance of regular maintenance in sustaining the operational integrity of critical energy infrastructure.