Project Construction Unstoppable in Winter Racing Against Time with High Spirits

On December 16, heavy snowfall and a sharp temperature drop swept through the area. Despite the harsh weather, the construction site for the Tengda-Halagande line connection to the East Industrial Park substation, managed by the State Grid Kuitun Power Supply Company, was bustling with activity.

Since its commencement in July 2024, the project has achieved 145 days of safe construction. Throughout the long construction period, to ensure progress and quality, power grid builders have braved the severe cold, remaining steadfast in their roles, racing against time and defying the harsh winter. Management personnel at all levels of the company have immersed themselves in the front lines, working side by side with the construction team. Responding promptly to the call of snow, they have battled through snowstorms and freezing temperatures, demonstrating their unwavering commitment to duty and responsibility as Kuitun power grid workers through their actions.

In recent years, the East Industrial Park of Kuitun has been solely powered by the 220-kilovolt Chongguang substation, whose current main transformer capacity is 2×180 MVA. In 2021, the maximum outgoing load of the Chongguang substation reached 237 MW, with a load rate of nearly 66%, which can no longer meet the electricity demands of new users, such as Heshan Juli and other enterprises.

The primary purpose of this project is to meet the additional load demands and long-term power supply planning needs of the Kuitun East Industrial Park. It aims to rationally allocate power supply zones, optimize the 110-kilovolt power grid structure, and ensure the safe and stable operation of the power grid in the Kuitun East Industrial Park.

The Tengda-Halagande line modification project involves the construction of a 110-kilovolt overhead line with a total length of 2.4 kilometers. The line starts at the 220-kilovolt Kuitun East substation and ends between poles 11 and 12 of the original Tengde line. It features both single and double-circuit configurations and includes 10 strain towers. Project manager Liu Zenghuang stated, “This project is scheduled to be operational and deliver power in December. Currently, 97% of the construction progress has been completed, with on-site tasks focusing on tightening bolts on the newly built Tower 12, addressing minor defects, and installing lines and accessories for the new section.”

At the construction site, power grid employees, bundled in thick winter clothing and helmets, skillfully operated various mechanical equipment in the bitter cold. Despite the freezing temperatures, their movements remained swift and precise, adhering strictly to construction standards. Liu Zenghuang mentioned that winter construction poses numerous challenges, such as low temperatures and snowstorms, which impact project quality and safety. To tackle these challenges, the project team developed a detailed winter construction plan and implemented measures for insulation, anti-cold protection, and anti-slip precautions. Over 40 workers and managers, along with three platform work vehicles and cranes, were mobilized on-site to maximize safety and efficiency through large-scale machinery.

Once completed, the line will connect the 220-kilovolt Kuitun East substation to the Tengda substation via a 110-kilovolt line. This will significantly optimize the region’s power resource allocation, enhancing the stability and reliability of power supply. It will provide a solid guarantee for the electricity needs of new enterprises and residential users in the Kuitun East Industrial Park and surrounding areas.