Laboratorní model pro měření zemního spojení v elektrické síti

Abstract

Throughout this bachelor's thesis, we will review the basic parameters of transmission and distribution networks and their operation. Particular attention is given to the quality requirements for network frequency and voltage. Transformer parameters are briefly discussed, followed by a focus on the issue of ground faults under different methods of neutral point grounding in power transformers. The central topic of this thesis is the single-phase ground fault itself, whose topology was used as the basis for designing a laboratory model. This model had to be designed both electrically and physically. The final outcome of this work is a medium-voltage (MV) ground fault model, which has been assembled, tested, and is already being used as part of the teaching curriculum.