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

Volume

3

fYear

2011

Firstpage

1732

Lastpage

1735

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Power System Automation and Protection (APAP), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-9622-8

Type

conf

DOI

10.1109/APAP.2011.6180617

Filename

6180617