Developed model and simulation of primary and secondary arc fault on transmission lines using MATLAB

In this paper, a developed arc model is introduced using MALAB. The developed arc model interacts with the transmission network under investigation and shows the dynamic behaviour of primary and secondary arc stages. The arc is modelled using a time-varying resistance which gets its value after solving a differential equation of arc conductance. Secondary arc extinction limits are used to determine the secondary arc duration and hence single pole autoreclsure time can be easily set. The model validation is done by comparing between the arc model results and field measurements of a synthetic test done for a 380 kV string insulator. Another case study for a transmission network is presented and investigated.