In preparation for the summer demand period, State Grid Chongqing Electric Power Company has completed the first annual maintenance of its Yubei converter station. This effort involved over 2,000 inspection and maintenance tasks, reducing equipment risks and boosting the station's operational reliability, the company said on Saturday.

The station is a critical component of the Hami-Chongqing ±800 kV ultra-high voltage direct current (UHVDC) transmission project. Originating from the Balikun Converter Station in Hami, Xinjiang Uygur autonomous region, this project stretches 2,260 kilometers across Gansu, Shaanxi, and Sichuan provinces to deliver wind and solar power from the Gobi Desert to industrial centers in the southwest.

The Yubei station's low-voltage sections were activated in June 2025, followed by the high-voltage sections in December. Since then, over 25 billion kilowatt-hours of electricity have been transmitted to Chongqing.

The power company's operational and maintenance efforts have included adding intelligent inspection systems and infrared temperature monitoring in the valve hall. These systems gather operational data around the clock.

Its maintenance strategy for the Yubei station includes increasing inspection frequency, enhancing testing, and improving data analysis to ensure reliability under extreme weather conditions.