On October 29, 2021, after more than 50 hours of continuous testing, the DC de-icing equipment of the 500kV Tianxing intelligent substation completed the current raising operation with the line. NR has added another high-capacity DC de-icier in China's Southern Power Grid.
Tianxing substation is the second 500kV smart station of the Yunnan power grid. It was put into operation in July 2021. The rated capacity of the de-icing equipment is 103MW and the rated output DC is 5000A, which can meet the DC de-icing requirements of 500kV Tianxi lines A and B.
DC de-icing
After on-site installation and commissioning, the NR service team has completed various acceptance works
After on-site installation and commissioning, the NR service team has completed various acceptance works. On October 27, it was officially started and put into operation.
After two days and two nights of live testing, the 5000A short-circuit current rise of the de-icing system was realized without abnormality, and the current rise of the de-icing system with 500kV line conductor and ground wire was realized.
The smooth operation indicates that the DC de-icing of the Tianxing substation has the ability of emergency de-icing to protect the power supply in winter.
stable and reliable operation
At present, NR has successively put into operation more than 80 sets of DC de-icing equipment in various regions of the country to ensure the stable and reliable operation of the power grid.
NR will always create value and serve society with professional skills and high-quality and reliable services to ensure the normal operation of the power grid during the snow season.
