Novel Method For Numerical Transformer Differential Protection Setting Up Using Its Detailed Mathematical Model

Settings determination for numerical transformer differential protection via its detailed mathematical model

“…An analysis of the works [10][11][12][13][14][15][16][17][18][19] showed that the most often used in the RP simulation are third-order Chebyshev and Butterworth low-pass filters (LPFs). In [22], a mathematical model of the MP containing the third-order Butterworth LPF was studied, and in the framework of this work, the third-order Chebyshev LPF is considered. The mathematical model in the form of a transfer function (TF) for the MP 'CT↔active auxiliary CT↔Chebyshev third-order low-pass filter' has the following general form (1).…”

“…Research results showing what needs to be taken into account in order to make an adequate detailed RP model are presented, e.g. in [20,22]. The structure of EPS equipment models has been analysed in many papers by the authors, e.g.…”