Title :
Research on Principle and Countermeasures of the Transformer Sympathetic Inrush
Author :
Du Shenhui ; Weilu, Z. ; Wang Zhihong
Author_Institution :
Sch. of Electr. Eng. & Inf. Sci., Hebei Univ. of Sci. & Technol., Shijiazhuang
Abstract :
Based on the analysis of sympathetic inrush in no-load parallel transformer, the principle and characteristics of sympathetic inrush are studied according to flux variation. Time differential method is analyzed to identify sympathetic inrush .The influencing factors of sympathetic inrush are studied. The points are verified by MATLAB simulation. The harm of sympathetic inrush to transformer differential protection and back-up protection are discussed, and several countermeasures to sympathetic inrush are presented.
Keywords :
differential transformers; magnetic flux; power transformer protection; MATLAB simulation; back-up protection; magnetic flux variation; no-load parallel transformer; time differential method; transformer differential protection; transformer sympathetic inrush analysis; Circuit faults; Couplings; Iron; MATLAB; Magnetic flux; Power transformer insulation; Saturation magnetization; Surge protection; Switches; Switching circuits;
Conference_Titel :
Power and Energy Engineering Conference, 2009. APPEEC 2009. Asia-Pacific
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-2486-3
Electronic_ISBN :
978-1-4244-2487-0
DOI :
10.1109/APPEEC.2009.4918703
