Neutral point connections in mv power networks with grounding zigzag transformers – analysis and simulations... In MV networks with feeding transformer winding in delta connection (isolated networks), that earth fault current increase requires forming of artificial ground point – a neutral connection point on a three-phase ungrounded power system...
An innovative tcr compensator for closed loop reactive power compensation of dynamic loads... Simulation results show that the proposed scheme can achieve reactive power compensation in less than a half cycle and the harmonics contents of source are maintained at insignificant levels due to delta connection of TCR and appropriate firing angle range selection of TCR
Discrimination of three-phase three-limb transformer inrush current based on characteristics of instantaneous excitation inductancesKeywords- relay protection; three-phase three-limb transformer; excitation inductance; inrush current; wye-delta connection; Abstract...
Modified two-core phase-shifting transformer based on the classical «delta connection» scheme... A modified version of the two-transformer circuit phase-adjusting device, built based on the classical single-transformer scheme «Delta Connection» has been studied in the paper...
