Development of a 10 kV Grid Model for the Research Methodology of Digital Instrument Transformers in the Conditions of Arc Intermittent Single-Phase Earth Faults

Scientists of the Ivanovo State Power Engineering University (ISPEU) together with industrial partners developed and researched digital instrument current and voltage transformers (DIT). The devices already have operational experience in existing electrical power installations. However, some applications of DIT require additional research. The article presents combined DIT of 6(10) kV experimental investigation method in the conditions of arc intermittent single-phase earth faults (SPEF), as well as a simulation model of a 10 kV grid developed in RSCAD RTDS for modeling transients during SPEF. The model parameters and its verification with a similar grid model developed in Matlab Simulink are given.