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Nanjing Electric won the world's first ±1100 kV UHV DC project

Nanjing Electric won the world's first ±1100 kV UHV DC project

  • Categories:Company News
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  • Time of issue:2017-03-08 08:39
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(Summary description)The world's first ±1100 kV UHV DC project-State Grid Changji-Guquan 1100 kV UHV DC project glass insulator product tender results were released recently, Nanjing Electric (Group) Co., Ltd. won the bid for nearly 400,000 pieces of DC glass insulator products.

Nanjing Electric won the world's first ±1100 kV UHV DC project

(Summary description)The world's first ±1100 kV UHV DC project-State Grid Changji-Guquan 1100 kV UHV DC project glass insulator product tender results were released recently, Nanjing Electric (Group) Co., Ltd. won the bid for nearly 400,000 pieces of DC glass insulator products.

  • Categories:Company News
  • Author:
  • Origin:
  • Time of issue:2017-03-08 08:39
  • Views:
Information

The world's first ±1100 kV UHV DC project-State Grid Changji-Guquan 1100 kV UHV DC project glass insulator product tender results were released recently, Nanjing Electric (Group) Co., Ltd. won the bid for nearly 400,000 pieces of DC glass insulator products.

The Changji to Guquan ±1100 kV UHV DC project is currently the world’s highest voltage level, the largest transmission capacity, the farthest transmission distance, and the most advanced technology level UHV transmission project. The Changji to Guquan project has increased from the current voltage level of ±800 to ±1100 kV, the transmission capacity increased from 6.4 million kilowatts to 12 million kilowatts, and the economic transmission distance increased to 3000 to 5000 kilometers. This project is an important milestone in the continuous innovation of the State Grid in the field of UHV transmission and refreshed the world's power grid technology. The height has opened a new era in the development of UHV power transmission technology, and has a major demonstrative effect on the development of the global energy Internet.

The State Grid Changji to Guquan ±1100 kV UHV DC project starts at the Zhundong (Changji) converter station in Xinjiang and ends at the Anhui Wannan (Guquan) converter station, passing through Xinjiang, Gansu, Ningxia, Shaanxi, Henan, and Anhui. , The total length of the line path is about 3304.7 kilometers. The transmission capacity is 12 million kilowatts, and the voltage is ±1100 kilovolts. The project was approved by the National Development and Reform Commission on December 28, 2015. Construction started in May 2016. The Xinjiang section project is scheduled to have live conditions in June 2018.

The construction of the Changji-Guquan project is an important measure to implement the spirit of the Central Xinjiang Work Forum and implement the "Belt and Road" construction. It has significant economic, social and environmental benefits. The Changji to Guquan project is the second UHV power transmission project to implement the "External Power Transmission from Xinjiang". The project will promote the bundled delivery of thermal power, wind power, and solar power from the Xinjiang Energy Base to ensure reliable power supply in East China and prevent air pollution. Preventing and stimulating Xinjiang’s economic growth play a very important role. After the completion of the project, it will be able to transmit approximately 66 billion kilowatt-hours of electricity to the east and central regions each year, reduce 30.24 million tons of coal transportation, reduce 24,000 tons of soot, 149,000 tons of sulfur dioxide, and 157,000 tons of nitrogen oxides.

It is understood that Nanjing Electric won the bid for nearly 400,000 pieces of high tonnage DC tempered glass insulators of 550 kN and above. The delivery date is April to September 2017. The bid-winning products include more than 20,000 pieces of 840kN DC products. The strength of this product is the highest in the world. It is also the first use in the construction of my country's power grid and domestic and foreign power grids, which is of epoch-making significance.

After learning the bidding information of the project, Nanjing Electric immediately established the project headquarters, with the general manager Shen Qirong personally acting as the commander-in-chief, and required the company to have a deep sense of awe, establish the spirit of craftsmanship, clarify the division of responsibilities, and create quality projects. With the strength of the entire company, we will complete the production and delivery tasks on time with quality and quantity, provide the best quality products for the Changji-Guquan 1,100 kV UHV DC project, and make new contributions to the construction of national key projects.

Since winning the bid for the State Grid Jinping to Sunan UHV DC project in 2011, Nanjing Electric has successively won 17 UHV projects in the State Grid and China Southern Power Grid, including 6 UHV AC projects and 11 UHV DC projects. The total supply of glass insulators for UHV projects reached more than 3.2 million pieces, ranking first in the domestic industry. Contributions have been made to the construction of key national projects such as "Outbound Power Delivery", "Mongolian Power Outbound", and "North Power South Supply". (Zhao Xinsheng)

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