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Measurement of DC Currents in the Power Grid by Current Transformer
(IEEE, 2013)
DC currents in power grids are mainly caused by geomagnetic activity especially during magnetic storms. It is desirable to monitor
these currents to prevent saturation of transformers, which may cause blackout. However, ...
Electric Current Sensors: a Review
(IOP Publishing, 2010)
The review makes a brief overview of traditional methods of measurement of electric current and shows in more detail relatively new types of current sensors. These include Hall sensors with field concentrators, AMR current ...
DC-Compensated Current Transformer
(Molecular Diversity Preservation International, 2016)
Instrument current transformers (CTs) measure AC currents. The DC component in the measured current can saturate the transformer and cause gross error. We use fluxgate detection and digital feedback compensation of the DC ...
Effect of external DC field on current transformers with amorphous and nanocrystalline cores
(Elsevier, 2022)
Nanocrystalline and amorphous stress-annealed and field annealed tapes are used for cores of DC-tolerant current transformers. We analyze the influence of external DC field of arbitrary direction on the performance of these ...