Secondary arc modelling for single pole reclosing analyses

The paper discusses two evaluation methods of single pole auto-reclosing process effectiveness in HV transmission lines. Secondary arc current and recovery voltage calculation results obtained by load flow calculation are compared to the results obtained by the time domain simulations. Moreover, a nonlinear secondary arc model implementation is presented. The paper presents the study results for the three types of EHV transmission lines: single circuit, double circuit and double circuit with shunt reactors. The authors indicate, that precise representation of secondary electric arc in power system studies can lead to different conclusion than analysis carried out on simplified arc models.