People's Network Jinan, November 11 -- In the early morning of November 11, with the successful impact transmission of the newly expanded 1000 kV transformer, the expansion project of the first UHV substation in Shandong Province - Quancheng 1000 kV substation was successfully transmitted.

It is reported that the Quancheng 1000 kV substation is the hub substation of the province's super power grid, and it is also an important clean energy channel of the national air pollution prevention and control plan. As the receiving substation of the Ximeng-Shandong UHV AC Project, the station has been in operation since 2016 to October 31, 2019, and has delivered a total of 38.76 billion kWh of clean energy to Shandong. During the peak period of electricity load in winter and summer, the clean energy transmitted by the station from other provinces effectively made up for the shortfall in Shandong's electricity load and greatly alleviated the shortage of electricity consumption.

The expansion project of Quancheng Station includes two sets of 1000 kV transformers and six sets of 110 kV capacitor intervals, with a rated capacity of 3 million kilowatts of a single transformer, and after operation, Quancheng Station will increase the external power transmission capacity by 6 million kilowatts, which is one of the largest UHV substations in the world. As an important project to ensure the smooth operation of this expansion project, the UHV transformer system needs to go through a total of 6 debugging tests, including 1000 kV side switching and 500 kV side switching, and the operation lasted 5 days and accumulated more than 1,000 lean operations.

At the same time, this expansion project is also an important part of the Shandong-Hebei UHV AC ring network, which can comprehensively optimize the network structure, greatly improve the ability of Shandong UHV power grid to cope with complex environments, ensure the safe and stable operation of the power grid, and provide a stronger clean energy guarantee for the upcoming peak winter. (Guo Dong)