Simulation of Breaking Characteristics of a 550 kV Single-Break Tank Circuit Breaker

Hongfei ZHAO  Xiaohua WANG  Zhiying MA  Mingzhe RONG  Yan LI  

IEICE TRANSACTIONS on Electronics   Vol.E94-C   No.9   pp.1402-1408
Publication Date: 2011/09/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E94.C.1402
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices – Papers selected from International Session on Electro-Mechanical Devices (IS-EMD2010) and other research results –)
capacitive current switching,  short-circuit current breaking,  tank circuit breaker,  FVM,  gas flow field,  

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An arc model has been applied in this paper to study the fundamental interruption environment of a 550 kV SF6 single-break tank circuit breaker. The full differential model takes into account of all important physical mechanisms and is implemented into a commercial Computational Fluid Dynamics (CFD) package, PHOENICS. The model takes a magneto-hydro-dynamics (MHD) approach and the governing equations are solved using the Finite Volume Method (FVM). Through the simulation, the flow velocity vector and mach number for capacitive current switching and short-circuit current breaking are analyzed, and flow dynamic characteristics are obtained. The simulation can provide helpful reference for the design of 550 kV SF6 single-break tank circuit breaker.