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Mathematical Problems in Engineering
Volume 2014, Article ID 384790, 7 pages
Research Article

Vacuum Large Current Parallel Transfer Numerical Analysis

1College of Electrical Engineering, Dalian University of Technology, Dalian 116024, China
2School of Electronics and Information Engineering, Dalian Jiaotong University, Dalian 116028, China

Received 17 April 2014; Revised 19 May 2014; Accepted 19 May 2014; Published 3 August 2014

Academic Editor: Peng Shi

Copyright © 2014 Enyuan Dong et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The stable operation and reliable breaking of large generator current are a difficult problem in power system. It can be solved successfully by the parallel interrupters and proper timing sequence with phase-control technology, in which the strategy of breaker’s control is decided by the time of both the first-opening phase and second-opening phase. The precise transfer current’s model can provide the proper timing sequence to break the generator circuit breaker. By analysis of the transfer current’s experiments and data, the real vacuum arc resistance and precise correctional model in the large transfer current’s process are obtained in this paper. The transfer time calculated by the correctional model of transfer current is very close to the actual transfer time. It can provide guidance for planning proper timing sequence and breaking the vacuum generator circuit breaker with the parallel interrupters.