标题：A novel current differential relay principle based on Marti model
作者：Qiao, Yan ;Qing, Chen
作者机构：[Qiao, Yan ;Qing, Chen ] Electrical Engineering School, Shandong University, Jinan, 250061, China;[Qiao, Yan ] Information and Electrical Engineering 更多
会议名称：10th IET International Conference on Developments in Power System Protection, DPSP 2010
会议日期：29 March 2010 through 1 April 2010
来源：IET Conference Publications
关键词：Marti model; power transmission protection; UHV transmission lines
摘要：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.