Application of voltage and current transformations of different transformer winding connections in analysis of voltage dips propagation

摘要

Matrices transformation of voltage and current transformers represent the amplitude and angular relationships between the voltages and currents of the secondary side and primary side. As a result, the selected state of asymmetry can be otherwise characterized by the primary and secondary side of the transformer depending on the connection system. For example, single-phase asymmetry on the primary side of the transformer Yd5 can be recognized as two-phase asymmetry on the secondary side. This paper presents the results of applying of voltage and current transformation introduced by transformers as a part of the algorithm for voltage dip propagation assessment.