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Coupling of multi physical parameters in extra high voltage SF6 circuit breaker (EHV SF6 CB) has been investigated. A 2D combined mathematical model of electric field, flow field and k - ?? turbulent flow was developed, and the coupling condition of multi physical field of CB was established. And the computation has been carried out for a 500 kV 1-break SF6 CB. The multi physical parameters and the...
The reason of main insulation structure breakdown based on liquid and solid discharge theory is analyzed. The new design schemes of main insulation structure for 35 kV electric power transformer are presented based on electric field analysis. FEM is introduced to calculate the electric filed of new type of main insulation structure. The electric field distribution, maximum and position of electric...
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