2021-08-03 at 11:08 am
#1197
In new numerical differential relays, vector group modifications are done easily. Therefore they hadn’t some problem with protection system. In regard to different vector group step up transformers possibility, if there are not any interconnection path between two power generators via unit transformers and relevant auxiliary switchgears, it is not problem; because we can have two or more generators with asynchrony voltage system that are connected to common bus by different group transformers.
