The analysis and computation of transformer winding short-circuit current and strength on permanent fault after reclosing

Author

Li, Yan ; Sun, Xin ; Li, Jian ; Zhou, Wei ; Li, Dougxue

Author_Institution

Res. Instn. of Special Electr. Machines, Shenyang Univ. of Technol., Shenyang, China

fYear

2011

fDate

20-23 Aug. 2011

Firstpage

1

Lastpage

5

Abstract

This paper has analyzed the change of power transformer short-circuit current after reclosing when a permanent faults has occurred on system. The transient process of winding flux and inrush current has been analyzed, and the different of current between initial short-circuit and reclosing can be given. The simulation results of inrush current after reclosing has been given through matlab simulation, it can be as a known condition to calculate winding electromagnetic force, and the winding strength will be checked finally. It has some significance to guide project design.

Keywords

electromagnetic forces; power system transients; power transformers; short-circuit currents; transformer windings; Matlab simulation; inrush current transient process; permanent fault; power transformer short-circuit current; reclosing; transformer winding short-circuit current analysis; transformer winding short-circuit strength analysis; winding electromagnetic force; winding flux transient process; Electromagnetic forces; Fault tolerance; Power generation; Power transformers; Transformers; Windings;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4577-1044-5

Type

conf

DOI

10.1109/ICEMS.2011.6074004

Filename

6074004