Title :
/spl nu/-i trend-based protective relaying algorithm for 3-phase power transformer
Author :
Kim, Sang-Tae ; Jin, Bo-Geon ; Lee, Seung-Jae ; Kang, Sang-Hee ; Myeon-Song Choi ; Yoon, Sang-Hyun ; Lee, Tae-Sung ; Chung, Sang-Ki
Author_Institution :
Dept. of Electr. Eng., Myongji Univ., Yongin, South Korea
Abstract :
A new protective relaying algorithm that observes the trend of terminal voltage and differential current, and identify the disturbance-fault, inrush, over-excitation-is developed. Various tests have shown that it is very effective even during the first cycle of the transient and works for any type of transformers. The average operation time is less than a half cycle.
Keywords :
power system faults; power system relaying; power system transients; power transformer protection; relay protection; /spl nu/-i trend; average operation time; differential current trends; disturbance identification; fault; inrush; over-excitation; protective relaying algorithm; terminal voltage trends; three-phase power transformer; transients; Analytical models; Circuit faults; Circuit simulation; Circuit testing; Data analysis; EMTP; Power transformers; Protective relaying; Surge protection; Voltage;
Conference_Titel :
Power Engineering Society Summer Meeting, 2001
Conference_Location :
Vancouver, BC, Canada
Print_ISBN :
0-7803-7173-9
DOI :
10.1109/PESS.2001.970107
