Title :
A novel current differential relay principle based on Marti model
Author :
Yan Qiao ; Chen Qing
fDate :
March 29 2010-April 1 2010
Abstract :
A novel current differential relay principle based on Marti model is proposed in this paper. Compared with Bergeron model based differential protection, the frequency-dependent characteristic of line parameters is taken into account in the new principle, so that the calculating result is more accurate. Simulating comparison have been carried out between the proposed protective principle and Bergeron model based protection for the first 1000 kV UHVAC transmission line in China. Simulation results show that this novel principle has high reliability for internal and external faults, and can response the earth fault via a high resistance sensibly.
Keywords :
power transmission faults; power transmission lines; power transmission protection; relay protection; Bergeron model; China; Marti model; UHVAC transmission line; current differential relay principle; differential protection; earth fault; frequency-dependent characteristic; voltage 1000 kV; Marti model; UHV transmission lines; power transmission protection;
Conference_Titel :
Developments in Power System Protection (DPSP 2010). Managing the Change, 10th IET International Conference on
Conference_Location :
Manchester
DOI :
10.1049/cp.2010.0311
