The first two domestic GIS circuit breaker systems with double row layout

This engineering technology effectively saves land and facilitates UHV transmission When the line goes out, at the same time, 50 million yuan will be saved in the pipeline bus.

GIS pipeline bus system tunnel crossing connection project

Avoid cross-air connection of pipeline bus system, effectively saving equipment investment , Solve the transportation and installation problems of the main transformer system, and also facilitate system operation, maintenance and repair.

The reporter learned from Kunshan Power Supply Company that “Huainan- Nanjing-Shanghai & rdquo; 1000 kV AC UHV transmission and transformation project Suzhou substation two major domestic firsts, GIS circuit breaker system two-row arrangement and GIS pipeline bus system tunnel through connection projects have passed technical operation testing recently.

As the world’s largest under construction and highest main transformer capacity The 1000 kV UHV AC transmission substation, Suzhou Substation is also the first UHV substation constructed with two stations on the same site in China. The first phase of the project is based on the “6+1 mode”

Invested to build 2 groups of 6 substations with a capacity of 3000 megabytes The main transformer system of FU, each group serves Shanghai and Jiangsu respectively, and the other main transformer system serves as a backup. Since the start of construction in July 2014, the engineering design and construction team of the Suzhou substation has overcome the test of the southern Jiangsu water network and rainy weather, and for the first time in China explored the dual-row arrangement of the 1000 kV UHV GIS circuit breaker system and the 1000 kV UHV GIS pipeline bus system tunnel traversal connection engineering operation. It is understood that more than 90% of the 449 operating units of the two-row GIS circuit breaker system have been completed, and the others will be fully completed on March 10. According to reports, in the first phase of the Suzhou substation project, this engineering technology effectively saves land and facilitates the outlet of UHV transmission lines. At the same time, it will save 50 million yuan in pipeline bus investment.

1000 kV UHV GIS pipeline bus system is connected through tunnel The engineering technology of the pipeline avoids the cross-air connection of the pipeline bus system. While effectively saving equipment investment, it will solve the problem of the transportation and installation of the main transformer system in the long-term construction of the substation. In addition, this engineering technology will greatly facilitate the entire GIS pipeline Later operation and maintenance of the busbar system.