Jinan, November 11 (Xinhua) in the early morning of November 11, with the successful impact power transmission of the newly expanded 1000 kV transformer, the expansion project of Quancheng 1000 kV substation, the first UHV substation in Shandong Province, successfully operated.
It is reported that Quancheng 1000 kV substation is the hub substation of the super grid in our province and an important clean energy channel of the 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 from other provinces to Shandong since it was put into operation in 2016 until October 31, 2019. During the peak period of power load in winter and summer, the clean energy from other provinces transmitted by the station has effectively made up for the power load gap in Shandong and greatly eased the power tension.
The capacity expansion project of Quancheng station includes 2 sets of 1000 kV transformers and 6 sets of 110 kV Capacitor bays. The rated capacity of a single transformer reaches 3million kW. After putting into operation, Quancheng station will increase the external power transmission capacity by 6million kW. It is one of the UHV substations with the largest substation capacity in the world. As an important project to ensure the smooth power transmission and operation of the capacity expansion project, the UHV Transformer system needs to undergo 6 commissioning tests, including 1000 kV side switching and 500 kV side switching. The operation lasted 5 days and the cumulative lean operation exceeded 1000 times.
At the same time, the capacity expansion project is also an important part of Shandong Hebei UHV AC loop 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 coming peak winter.
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