Analysis and Improvement of Linkage Transfer Position for the Operating Mechanism of MCCB

Author

Ji, Liang ; Chen, Degui ; Liu, Yingyi ; Li, Xingwen

Author_Institution

State Key Lab. of Electr. Insulation & Power Equip., Xi´´an Jiaotong Univ., Xi´´an, China

Volume

26

Issue

1

fYear

2011

Firstpage

222

Lastpage

227

Abstract

Linkage transfer phenomenon, which exists in the opening process of the operating mechanism of the molded case circuit breaker MCCB, is introduced. The influence of the linkage transfer position on the behavior of the mechanism is analyzed. According to the analysis result, the linkage transfer position of an actual operating mechanism is improved with virtual prototype technology software ADAMS. Simulation and experiment results show that after improvement, the opening time of the mechanism is shortened by about 1 ms. Short-circuit tests demonstrate that the operating mechanism with its linkage transfer position improved is helpful for enhancing the interruption performance of MCCB while breaking the low-current faults.

Keywords

circuit breakers; short-circuit currents; ADAMS; MCCB; linkage transfer position; low current faults; molded case circuit breaker; short circuit tests; virtual prototype technology software; Couplings; Damping; Downlink; Friction; Integrated circuit modeling; Mathematical model; Software; Interruption performance; linkage transfer position; operating mechanism; virtual prototype technology (VPT);

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2010.2059049

Filename

5551264