An Improved Current Differential Protective Principle of UHV Transmission Line

Author

Yan Qiao ; Chen Qing

Author_Institution

Sch. of Electr. Eng., Shandong Univ., Jinan, China

fYear

2011

fDate

25-28 March 2011

Firstpage

1

Lastpage

4

Abstract

This paper presents an improved current differential protective principle. Marti model of the transmission line is applied in this principle, which place emphasis on solving frequency-dependent line parameters. The operating current expressions for an internal fault are also deduced in frequency domain. Finally, simulating comparison have been carried out between the proposed protective principle and Bergeron model based protection for Chinese 1000kV UHV AC test demonstration project. Simulation results show that this improved principle has high reliability for both internal and external faults.

Keywords

HVAC; frequency-domain analysis; power transmission faults; power transmission lines; power transmission reliability; Bergeron model; Chinese UHV AC test demonstration project; Marti model; UHV transmission line; current differential protective principle; external faults; frequency domain; frequency-dependent line parameters; internal faults; reliability; voltage 1000 kV; Circuit faults; Current measurement; Frequency domain analysis; Mathematical model; Power transmission lines; Relays; Transmission line measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific

Conference_Location

Wuhan

ISSN

2157-4839

Print_ISBN

978-1-4244-6253-7

Type

conf

DOI

10.1109/APPEEC.2011.5749010

Filename

5749010