The world's highest 500 kV Mangkang substation was completed and put into operation

At 22:50 on August 11, with the joint efforts of construction, operation and maintenance, scheduling and commissioning, the No.
1 main transformer of the 500 kV Mangkang substation located in Lawu Mountain (4300 meters) in Mangkang County, Changdu, Tibet was successfully electrified, and the world's highest 500 kV substation was completed and put into operation, marking the historical leap
of the voltage level of Tibet's power grid from 220 kV to 500 kV.

The 500 kV Mangkang substation is the first end station of the Tibet-China Interconnection Project, and it is also a hub station, connecting Sichuan Power Grid in the east, Lhasa, Nyingchi Power Grid in the west, and Qamdo Power Grid in Beitong, and the start-up and commissioning of the station is crucial
to the entire project construction.
On August 4, the relevant interval of the 500 kV rural substation and the equipment of the 500 kV Batang substation expanded by the Sichuan-Tibet Interconnection Project were successfully electrified, and the voltage level of the Sichuan-Tibet Interconnection Project was increased from 220 kV to 500 kV
.
At 9 o'clock on August 10, the 500 kV Mangkang substation was officially put into operation and started the work, and the 500 kV Batang substation sent power to the Mangkang substation, and the 500 kV Tang Mang I line was successfully charged at 17:36 on the same day, the Tang Mang II line was successfully charged at 11:29 on August at 2:29, the main transformer charging of the substation 1# at 22:50 was successful, and the 2# main transformer charging was successful
at 17:42 on the 12th.

The new construction project of Mangkang substation and the 500 kV line project connecting the Batang-Qamdo π to Mangkang station are located in high altitude, high cold, lack of oxygen and high ultraviolet rays, and face problems such as
physiological health protection, extremely fragile plateau ecological environment, difficulty in material transportation, and insufficient strength of concrete due to freezing 。 More than ten construction personnel from Qinghai Power Transmission and Transformation Engineering Co.
, Ltd.
, Sichuan Electric Power Engineering Construction Supervision Co.
, Ltd.
, China Power Engineering Consulting Group Northwest Electric Power Design Institute Co.
, Ltd.
, etc.
, persevered in this land, fought for more than 700 days, implemented the daily control and weekly notification system of project progress, scientifically planned the construction time nodes of the project, ensured the smooth supply of materials, and accelerated the entry of equipment, electrical installation and secondary commissioning
。 Construction management and construction are carefully organized, always adhere to the "safety-oriented, quality first" working principle, overall planning, high standards, strict requirements, refine the work tasks of each stage, reasonably arrange the construction of the project, strictly control the construction progress, overcome the pressure of tight construction period, heavy tasks and high construction requirements, and complete the project construction
safely, with high quality and efficiency.

In this phase of the project, 2×50 megavolt-amperes will be built, 6 times of 500 kV outlets, including 2 times in Batang, 2 times in Qamdo, 2 times in Zuogong, 3 times in 110 kV outlets, including 2 times to 110 kV Gato substation and 1 loop to 110 kV Wanda substation
.
The 110 kV is single-sided southeast
.
One set of 500 kV shunt high-voltage reactor and two sets of 35 kV low-voltage reactor were newly built
.