Successful completion of power transmission project enhances winter power supply

A 1000-kilowatt alternating current transmission project from Zhumadian in Henan province to Wuhan in Hubei province successfully concluded its 72-hour trial run and smoothly entered full operation on Sunday, enhancing stable winter power supply for the two provinces.

Stretching over 281 kilometers, with a total investment of 3.8 billion yuan ($531.2 million), the project represents the most significant investment, highest voltage level and largest transmission capacity in the power grid infrastructure projects undertaken by Henan during its post-disaster recovery.

Starting in March 2022, the project leverages domestically developed, internationally leading ultra-high voltage transmission technology, showcasing an edge in transmission capacity, long-distance reach, low energy loss and minimal land occupation.

Integral to the main framework of the central China UHV grid, this project contributes to the realization of interprovincial energy complementarity within central China. It elevates the safety and stability of the central China power grid, ensuring the large-scale input of clean energy from the western and northern regions.

Effectively meeting the growing electricity demand during the 14th Five-Year Plan (2021-25) period, the project also holds significant importance in serving the high-quality economic and social development of the central part of China.

Throughout the construction process, State Grid Henan Electric Power Co has diligently adhered to safety operation requirements, surmounting challenges such as complex construction, stringent control requirements and high safety risks. The company also established an efficient construction and management model, aiming to elevate the construction and management standards and ensure a high-quality project that is "safe, reliable, innovative, environmentally friendly and globally advanced," said the company.

To date, the State Grid Corp of China has successfully completed 34 UHV projects, comprising 18 alternating current and 16 direct current ones. This has resulted in a total UHV DC transmission capacity of 130 million kW, laying a solid foundation for the establishment of a power network in East, North and central China, and helping ensure a secure and reliable power supply that supports the nation's transition in energy structure.

lijiaying@chinadaily.com.cn