The first UHV substation expansion project in Shandong Province has been successfully put into operation

People's daily, Jinan, November 11 (Xinhua) in the early morning of November 11, with the successful impact of the new expansion of 1000 kV transformer, the expansion project of Quancheng 1000 kV substation, the first UHV substation in Shandong Province, was successfully put into operation.

It is reported that Quancheng 1000 kV substation is the hub substation of super grid in our province, and it is also an important clean energy channel of national air pollution control plan. As the receiving substation of Ximeng Shandong UHV AC project, the station has delivered 38.76 billion kwh of clean energy to other provinces from 2016 to October 31, 2019. During the peak period of power load in winter and summer, the clean energy from other provinces transported by the station effectively made up for the power load gap in Shandong Province and greatly eased the power shortage.

The expansion project of Quancheng station includes two 1000kV transformers and six 110kV capacitor bays. The rated capacity of a single transformer reaches 3 million KW. After putting into operation, the external power transmission capacity of Quancheng station will increase by 6 million KW, which is one of the largest UHV substations in the world. As an important project to ensure the smooth power transmission and operation of this expansion project, the UHV Transformer system needs to go through six commissioning tests, including 1000kV side switching and 500kV side switching. The operation lasted for 5 days, and the accumulated lean operation exceeded 1000 times.

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