Simulation study on arc motion process of DC miniature circuit breakers
Source abstract
Abstract
Based on the theory of magnetohydrodynamics, a mathematical model of air arc in the arc extinguishing chamber of a DC miniature circuit breaker was established. By coupling external circuit characteristics and contact movement process, the motion process of the arc was simulated and analyzed. On this basis, the effects of breaking speed, time constant, and magnetic field on the arc motion characteristics were studied. The study showed that increasing the breaking speed appropriately and adding appropriate magnetic field can improve the breaking performance of DC miniature circuit breakers. The research results can provide reference for the optimization design of DC miniature circuit breakers.
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Research context
OpenAlex topics: Vacuum and Plasma Arcs · Electrical Fault Detection and Protection · Welding Techniques and Residual Stresses
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology, State Grid Hunan Electric Power Limited Company, Power Supply Service Center (Metrology Center) 1 , Changsha 41004, China
State Grid Hunan Electric Power Limited Company 2 , Changsha 41004, China
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology 3 , Tianjin 300130, China
References (14)
Show source-provided references
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