A novel transient based protection for ±800 kV UHVDC transmission lines

Author

Gang, Wang ; Li Haifeng ; Jie, Zhao ; Li Zhikeng

Author_Institution

Coll. of Electr. Power, South China Univ. of Technol., Guangzhou, China

fYear

2006

fDate

28-31 March 2006

Firstpage

281

Lastpage

284

Abstract

A novel transient based protection for ±800 kV UHVDC transmission lines is proposed in the paper. A ±800 kV UHVDC bipolar model with DC control system is built with PSCAD/EMTDC software. Wavelet-multiresolution signal decomposition technique is applied to analyze the transient voltages. Based on spectral energy distribution of transient voltages, the criteria are presented to distinguish the UHVDC line faults from other transient phenomena. Extensive simulations are used to test the criteria. The results show the proposed transient based protection is highspeed, reliable and suitable for UHVDC lines.

Keywords

HVDC power transmission; power system CAD; power system control; power system simulation; power system transients; power transmission faults; power transmission protection; wavelet transforms; -800 to 800 kV; DC control system; PSCAD-EMTDC software; UHVDC transmission line fault; spectral energy distribution; transient protection; wavelet-multiresolution signal decomposition technique;

fLanguage

English

Publisher

iet

Conference_Titel

AC and DC Power Transmission, 2006. ACDC 2006. The 8th IEE International Conference on

Conference_Location

IET

ISSN

0537-9989

Print_ISBN

0-86341-613-6

Type

conf

Filename

1633658