A method for suppressing steady-state operating overvoltages of the half wave-length UHV AC power transmission line

Author

Wang, Ling-tao ; Cui, Xiang

Author_Institution

Key Lab. of High Voltage & EMC Beijing, North China Electic Power Univ., Beijing, China

fYear

2011

fDate

1-4 Nov. 2011

Firstpage

551

Lastpage

554

Abstract

This paper presents a method for suppressing steady-state operating overvoltages at the middle portion of the half wave-length transmission lines based on an unconventional AC transmission system that the half wave-length transmission line is divided into five segments with the different phase spacing and the different split distance. Then an analysis is made of the steady-state operation of a 1000kV-50Hz-3000km transmission system with uniform and nonuniform transmission lines. Simulation results showed that the steady-state operating overvoltages at the middle portion of the power transmission lines can be efficiently suppressed. This method is very convenient to be applied in countries where the transmission lines sites are very distant from the consumption regions.

Keywords

overvoltage protection; power transmission lines; distance 300 km; frequency 50 Hz; half wave-length UHV AC power transmission line; phase spacing; split distance; steady-state operating overvoltages; voltage 1000 kV; Conductors; Distributed parameter circuits; Power transmission lines; Reactive power; Steady-state; Surges; UHV; half wave-length AC power transmission; overvoltage; power factor; steady-state operating;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning (APL), 2011 7th Asia-Pacific International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4577-1467-2

Type

conf

DOI

10.1109/APL.2011.6110187

Filename

6110187