Hongdunjie Power Plant 1,000 kV Transmission Project Completes

The 24-hour trial operation of the 1,000 kV Jieheng Line I in Shaanxi finished recently, marking the completion of the Hongdunjie Power Plant 1,000 kV transmission project, the first completed UHV transmission project by State Grid Corporation of China (State Grid) this year.

The Hongdunjie Power Plant 1,000 kV transmission project is part of the supporting transmission project of the Yuheng-Weifang UHV transmission project, starting from Hongdunjie Power Plant in Jingbian County, Yulin City, Shaanxi Province and ending at the 1,000 kV Hengshan Switching Station in Hengshan District, Yulin City. The project was approved in May 2021 and began construction in March 2022 with a total investment of RMB 350 million, including a new switchgear for the Hengshan 1,000 kV Switching Station, 28.54 km long 1,000 kV single circuit lines from the Hongdunjie Power Plant to the Hengshan Switching Station, and 64 new towers.

The Yulin area in Shaanxi Province is rich in mineral resources, thus most towers of the project are located in the mining area. All participating units have managed to overcome adverse conditions such as complicated environment conditions and severe weather in the winter, sticked to State Grid’s project construction management requirements and followed standardized construction processes. realizing 100% mechanized construction for project foundation, 100% tower assembly with crane, and 100% standard wiring process. Through strict control and management of construction plan and risk control measures, they ensured the completion of the transmission project as scheduled. 

The project will promote the development and utilization of coal resources in northern Shaanxi, and significantly increase the comprehensive utilization value of energy resources, which can boost regional economy and transform rich resources in the western region into economic advantages. Once the Hongdunjie Power Plant being connected to the grid, another 1.32 MW capacity for transmission will be added to Shaanxi’s power grid, which helps to meet the demand in the Beijing-Tianjin-Hebei-Shandong region and further improves the reliability of power supply in the region.