Selection of current transformers on the tertiary of the 150 MVA autotransformer in HPP Zakucac
Abstract
In the paper, the calculation and selection of technical data of current transformers on the tertiary of the network transformer 150 MVA (autotransformer 220/110 kV with stabilizing tertiary winding connected in a closed triangle) in HE Zakucac was carried out. We are talking about two current transformers for protection, one of which is installed in the tertiary winding itself (outside the boiler), while the other current transformer is installed in the short-circuit connection of the tertiary winding with the ground / grounding. Namely, for the purpose of fixing the potential of the tertiary winding (in a triangle connection), it is (directly) grounded at one of its points.
Type
