Impacts of UHV AC System Commissioning Test on 500 kV Power System
This paper researches the Anhui-Shanghai transmission line project and analyze the overvoltage and impacts of UHV AC system commission on 500kV power system.Firstly,compute the overvoltage in the 500kV power system,when no-load 1000kV transmission line is switched.Secondly,calculate the overvoltage in the 500kV power system,when no-load 1000kV transformers is switched.Thirdly,analyze the overvoltage situation in the 500kV power system,when the capacitor and the reactors on the 110kV side of the UHV primary transformer are switched.Finally,simulate the overvoltage in the 500kV system during the artificial short circuit test in the UHV system.
switch no-load transformerswitch no-load linelow-voltage capacitorslow-voltage reactorsartificial short circuit test