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KEMA to execute quality assurance for the world’s longest electricity transmission line
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May 21 – State Grid Corporation of China (SGCC) has awarded KEMA with a consulting service contract on the quality assurance of key equipment for the Xiang-Shang
800 kV HVDC transmission project. The contract was signed last week during SGCC's visit at KEMA in Arnhem.
The Xiang-Shang 800 kV HVDC transmission line runs from Xiangjiaba in the Southwest of Sichuan province to Shanghai, delivering clean electricity generated at giant hydro power plants in the upper stream of the Yangtze river to the heavy load center at east coast.
World records
The Xiang-Shang 800 kV HVDC transmission project breaks several world records: such as its 6,400 MW transmission capacity, 800 kV HVDC transmission voltage and over 2,100 kilometer distance. It encounters also many technical challenges, especially for key equipment of thyristor valves and converter transformers. The biggest 6 inches thyristors in the world will be for the first time used. The 800 kV converter transformers will be designed with the highest power rating per single unit with the highest voltage level. Together with Chinese partners, ABB and Siemens each will deliver key equipment for one converter station.
On behalf of SGCC, KEMA will review the world first 6 inches thyristor valves design of both ABB and Siemens and evaluate the type tests of them. KEMA will also carry out design review, in-production-inspection and witness the acceptance tests for all ABB made converter transformers and a number of units made by ABB's partner in China on behalf of SGCC.
Trust and responsibility
As the vice-president of SGCC Mr. Shu said during the contract signing at KEMA: "Putting the quality assurance work on the most crucial equipment of this project in hands of KEMA means we put the quality of this project in hands of KEMA. This is an enormous trust and responsibility."
As Pier Nabuurs, CEO of KEMA, and Thijs Aarten, member of the Executive Board, ensured Mr. Shu: "Since many eyes in the world will be looking at this challenging project, we will do our utmost to make this world records breaking project a success."
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