Son La – Hoa Binh 500kV line has a total length of 116.419km. After 14 years of operation Power Transmission Company No.1 (PCT1) has decided to implement a large-scale insulator replacement project to ensure safety and improve the power transmission's efficiency. Modern technical solutions such as the use of unmanned aerial vehicles (UAV) and Lidar technology have been applied to survey and plan construction. Thanks to that, the work is carried out quickly, accurately, and safely.

Construction performed in very difficult conditions due to high rocky terrain. Location of column 370 of Son La - Hoa Binh 500kV line is over 400m above national highway surface - Photo: Manh Hung.

Transporting equipment and working through nights to finish early - Photo: Manh Hung.

The completion of the Son La - Hoa Binh 500kV line insulation replacement project contributes significantly to ensuring national energy security and promoting the socio-economic development of the Northwest region.

Power grid maintenance and repair is a regular and important task. Power Transmission Company No.1 will continue to invest and upgrade the power grid system to ensure a stable and reliable power supply for people and businesses.

Translator: Mạnh Hùng