Successfully energized! Countdown begins for the opening of the Jianli Expressway

On May 26, as the closing command was issued, the "heart" of the Jianli Expressway power supply and distribution system began to "beat." The red indicator lights on the live-line displays lit up in unison, marking the successful one-time energization of the substation at the Nanzhai exit of the Jianli Expressway and laying a solid foundation for the successive energization of the remaining substations and the upcoming system commissioning.

The project uses the SCRBH17 series amorphous alloy dry-type transformers independently developed and manufactured by CEEG, which hold a semi-encapsulated three-phase three-leg patent.

01

Building a "Bridgehead" and Accelerating Integration with the Greater Bay Area

The Jianhe–Liping Expressway has a total length of 74.754 kilometers and is a key construction project in Guizhou's efforts to expand and densify its expressway network, as well as a fast corridor linking the Qiandongnan Miao and Dong Autonomous Prefecture with the Guangdong-Hong Kong-Macao Greater Bay Area. Bridges and tunnels account for 69.4% of the full line, which includes 53 bridges, 6 of them extra-large.

The Jianli Expressway links the ethnic minority areas of Jianhe and Jinping with the revolutionary old area of Liping. Once open to traffic, the drive between Jianhe County and Liping County will be cut from more than three hours to about one hour, and the route will interconnect with the north-south expressway network running across the province, forming a major tourism "artery" for Qiandongnan's famous scenic areas in Guizhou.

The project will help accelerate the socioeconomic development of Guizhou's remote ethnic minority areas, improve local transportation infrastructure, consolidate the gains of poverty alleviation along the route, and support rural revitalization — a role of great significance.

Images courtesy of the Qiandongnan Prefecture Media Center

02

Powering Major Transportation, Boosting New Development

In recent years, China's expressway network has expanded rapidly, spreading across the country. While making outstanding contributions to national economic development, it also poses severe tests for the stable operation of expressway power supply and distribution systems.

Transformers are the main equipment and infrastructure of the expressway power supply and distribution system. The SCRBH17 series amorphous alloy dry-type transformers, professionally developed and designed by CEEG, support the smooth operation of the Jianli Expressway grid with outstanding performance in energy efficiency, safety, and reliability.

Amorphous alloy transformers are high-tech, environmentally friendly, energy-saving products whose energy-saving and environmental benefits are internationally recognized — hailed as "the high-tech green product of today's world electrical trend." CEEG's amorphous alloy dry-type transformers use DuPont™ Nomex® insulation paper from the United States, offering high temperature resistance, high mechanical strength, high electrical insulation, and high stability.

The product's pioneering semi-encapsulated three-phase three-leg patented technology has passed national Grade 1 energy efficiency certification, energy-saving certification, and seismic certification, reducing no-load losses by 60%-80% compared with ordinary dry-type transformers.

(Patent numbers: 200820215814.7 200820215858.X)

The Jianli Expressway winds through the mountains of Guizhou, crossing ridges and ravines on steep terrain, with bridges and tunnels accounting for 69.4% of the full line. To ensure a safe and comfortable driving environment and highly efficient emergency rescue along the route, the expressway is equipped with street lighting, full-coverage monitoring systems, communications, and fire-fighting facilities — creating large total power demand and placing higher requirements on supply stability. During project construction, CEEG communicated and coordinated actively, continuously optimized the energization plan, fully aligned with technical specifications, and conducted multiple inspections and tests of product functions and insulation performance, ensuring the successful energization of this substation.

03

Deep Cultivation and Fine Research, Gathering Strength for New Empowerment

Transportation is the lifeline of a city's survival and development and of smooth internal circulation and external connectivity. For many years, CEEG has been rooted in urban development and deeply engaged in the transportation industry, empowering the sector with advanced technology and supporting urban transportation construction with premium power.

CEEG's green, energy-saving amorphous alloy dry-type transformers have now been successfully applied on the Huali Expressway in Yunnan, the Daning Expressway, the Hangzhou Expressway, the Wangfan Expressway in Shanxi, the Yonglan Expressway in Hunan, the Jiujiang Yangtze River Highway Bridge, the Dali Expressway in Yunnan, and the Dasha Expressway in Sichuan, among many other highway tunnels and bridges across the country.

The 14th Five-Year Plan report emphasizes that China will accelerate the building of its strength in transportation and improve comprehensive transport corridors, strengthening strategic trunk corridors linking Xinjiang and Tibet, the central and western regions, and areas along rivers, coasts, and borders; upgrading and expanding corridors with constrained capacity in an orderly manner; and enhancing connectivity with neighboring countries. CEEG actively responds to the call of national strategy, devoting itself to premium products that "safeguard" the transportation industry.