Dynamic analysis of auxiliary DC installations in electrical power plants

In this paper, the analysis of auxiliary DC installations in electrical power plants and substations
considering the transient state at the beginning of the failure operating mode is compared with
the analysis using a simplified installations model (only resistances with no capacities and
inductances). An original program package IRA for the analysis and dimensioning of auxiliary
DC installations in both cases is developed. A test model of auxiliary DC installations is
calculated using the program package, and the achieved results are compared.