Discharge arc is an important cause of fire accidents in high-voltage cable joints. To ensure the safe and stable operation of cable lines, it is of practical significance to study the discharge arc characteristics of cable joints. Magneto-hydrodynamics model is used to simulate the discharge arc characteristics of high voltage cable joints. Based on this model, physical parameters such as time-varying arc conductivity are calculated, and then the fault arc voltages under different short-circuit currents and insulated arc strike of equivalent heat loss in the passageway are obtained. On this b...
