China’s State Grid Qinghai Electric Power Company on the 18th news, China’s first clean energy transmission of ultra-high voltage channel (Qinghai side) the first transformer in Xining, Qinghai Province, assembled successfully and qualified by the test, which is also in China’s first domestic ultra-high-voltage converter on-site assembly of the successful assembly of the first transformer plant.

Qinghai to Henan ± 800 kV UHV DC project is China’s and the world’s first dedicated to clean energy transmission and the construction of UHV channel, the project starts in Hainan Tibetan Autonomous Prefecture in Qinghai Province, stops in Zhumadian City, Henan Province, through Qinghai, Gansu, Shaanxi, Henan and other four provinces, the line length of 1,587 kilometers, with a total investment of about 22.6 billion yuan (RMB, the same below).

According to China’s State Grid Qinghai Overhaul Company Operation, Maintenance and Repair Department Specialist Bai Wei, the design and manufacture of the converter will not be subject to the limitations of the transport size and transport weight, and can be used to superior design solutions, and on-site assembly can reduce the cost of engineering and construction, significantly shorten the distance of the transport to save transportation time, to ensure that the project is completed on schedule.

It is understood that, under normal circumstances, the transformer are required in the manufacturing plant to complete the body assembly and then transported to the substation, China’s domestic converter manufacturers are mainly concentrated in the Middle East, and high-end converter transformer body size and weight is too large to meet the conventional circumstances of the railroad transportation requirements, and long-distance transport of converter transformers through the highway there are bridges loading, toll station barriers and other multiple transportation obstacles.

China’s first domestic UHV converter site from the project converter station about 190 kilometers, along the highway can meet the converter overall transportation requirements.
Bai Wei introduction, through the AC transformer assembly test in this base, test grinding assembly plant and test hall of the function, to base the assembly and test function of the perfect and complete, for the subsequent ± 800 kV converter transformer smooth assembly laid the foundation.

China’s State Grid Qinghai Electric Power Company calculations, Qinghai to Henan ± 800 kV UHV DC project design annual transmission of 40 billion kilowatt-hours, equivalent to replacing 18 million tons of raw coal at the receiving end, emission reduction of 14,000 tons of soot, 90,000 tons of sulfur dioxide, 94,000 tons of nitrogen oxides, 29.6 million tons of carbon dioxide, will effectively promote the prevention and control of air pollution. (Luo Yunpeng Jingmingfa Zhu Yiran)