Title :
Study on Anti-Interference Criterion for Numerical Relay
Author :
Han Zhengqing ; Zhang Yuge ; Wei Jianzhong ; Liu Shuping ; Gao Shibin
Author_Institution :
Sch. of Electr. Eng., Southwest Jiaotong Univ., Chengdu, China
Abstract :
Firstly the paper introduces the characteristics of Electrical Fast Transient (EFT) and analyzes some maloperation cases of the current differential protection for transformer. Based on the characteristic of electrical fast transient burst, an anti-interference criterion is presented. Analysis of field record data and a large number of simulation show that the presented criterion can effectively improve the protection reliability in the EFT burst interference.
Keywords :
power transformer protection; relays; reliability; EFT burst interference; antiinterference criterion; current differential protection; electrical fast transient; electrical fast transient burst; numerical relay; transformer; Data models; Equations; Harmonic analysis; Interference; Protective relaying; Transient analysis;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6253-7
DOI :
10.1109/APPEEC.2011.5748644
