The Coupling Model Of Thermal Conductive High-Speed Airflow And Arc And The Analysis Of Application Effect

In order to increase the arcing ability of airflow arcing lightning protection gap, so it can be used to a higher voltage grade lines, this paper uses eject longitudinal airflow (parallel to the arc) instead of horizontal airflow (close to the vertical in arc) method to improve the clearance, and provide judgment in the longitudinal flow under the role of arc is occurring rekindle a method.Based on the basic theory of AC arc, Elaborated the forming process of arc discharge, research The physical characteristics of AC arc, analyse the energy process of arc with affect of the flow, analyse the positive affect to promotion the arc extinction and inhibition the arc reignition. Suppose that the flow is sprayed at moment the current across zero. research the process of dielectric strength recovery and the process of the voltage recovery during this time. Compare the amplitude and the recovery rate. We can determine the arc is reignited or not according to the result. Reference the dynamic mathematical model of the arc in the air blast circuit breaker, in this paper, a mathematical model of the arc affected by the fast flow is established. Temperature field distribution, electric field distribution etc are got by calculate the model.In this paper, the actual installation of the high thermal conductivity of high-speed air jet interrupter device, based on thermal effect of high-speed flow of the arc were analyzed to illustrate flow interrupter significant thermal effect. Also summarizes the economic benefits of the device and effect...