Title :
Elimination of Closing Resistors for Breakers in 1000-kV UHV System by Surge Arresters
Author :
He, Jinliang ; Li, Chen ; Hu, Jun ; Zeng, Rong ; Yuan, Jun
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
Closing resistors for breakers are used to suppress switching overvoltages, but their shortcomings make it a long-standing goal to eliminate closing resistors. In this paper, different arresters are evaluated as alternative measures to eliminate closing resistors in 1000-kV ultra-high voltage (UHV) systems. Two kinds of arresters with lower residual voltage are introduced to suppress switching overvoltages. The performance of these arresters under different operation conditions is also analyzed to ensure the safety of arresters. It is shown that closing resistors in UHV systems can be eliminated after applying proper arresters and adopting certain distributing measures.
Keywords :
arresters; circuit breakers; resistors; UHV system; breakers; closing resistors; long-standing goal; lower residual voltage; operation conditions; suppress switching overvoltages; surge arresters; ultra-high voltage systems; voltage 1000 kV; Absorption; Arresters; Energy management; Resistors; Surges; Thermal stability; Transmission line measurements; Voltage control; Absorbed energy; closing resistors; high applied voltage ratio arrester; low residual voltage arrester; switching overvoltage; ultra-high voltage (UHV) system;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2012.2202293
