Load Flow And Short-Circuit Analysis In A Romanian 110/20 Kv Retrofitted Substation

In order to respond to the increasing energy demand, consumption relocation and renewable energy integration into the grid, the Romanian power distribution substation have to be retrofitted. Load flow and short-circuit analysis are carried out on a newly retrofitted substation form the northern part of Romania. Obtained numerical simulation result were used for the optimal design and proper parametrization of the substation protection system and digital relays.