Title :
A method for fault pole selection of two HVDC systems on the same tower
Author :
Huang Min ; Wang Gang ; Li Haifeng
Author_Institution :
Dept. of Electr. Eng., South China Univ. of Technol., SCUT, Guangzhou, China
Abstract :
Owing to mutual influence between the two HVDC circuits on the same tower, the traditional protection of transmission line is faced with technical difficulties on fault pole identification, especially high-grounded fault loop impedance. Based on electromagnetic decoupling method for two bipole lines (TBL) on same tower is proposed by analyzed the characteristic of coupling mutual induction, a four module components is proposed to decouple the network equation and analyze the fault modal network. On this basis, a novel method of fault pole identification based on the polarity comparison of line-mode back traveling wave is proposed. It has been made that validates the advantage of this novel protection strategy to identify the fault pole by simulation of PSCAD/EMTDC on the model of the TBL ±500kV HVDC system on the same tower in Xiluodu-Guangdong China.
Keywords :
HVDC power transmission; poles and towers; power transmission faults; power transmission protection; HVDC circuits; PSCAD-EMTDC; TBL; coupling mutual induction characteristics; electromagnetic decoupling method; fault pole identification; four module components; high-grounded fault loop impedance; line-mode back traveling wave; network equation; tower; transmission line protection; two bipole lines; voltage -500 kV; voltage 500 kV; Chaos; HVDC transmission; PSCAD; Poles and towers; Fault Pole Selection; HVDC transmission line; double circuit on the same tower;
Conference_Titel :
Advanced Power System Automation and Protection (APAP), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-9622-8
DOI :
10.1109/APAP.2011.6180617
