Research on Proximity Magnetic Field Influence in Measuring Error of Active Electronic Current Transformers

Abstract

Abstract. The principles of the active electronic current transformer (ECT) are introduced, and the mechanism of how a proximity magnetic field can influence the measuring of errors is analyzed from the perspective of the sensor section of the ECT. The impacts on active ECTs created by three-phase proximity magnetic field with invariable distance and variable distance are simulated and analyzed. The theory and simulated analysis indicate that the active ECTs are sensitive to proximity magnetic field under certain conditions. According to simulated analysis, a product structural design and the location of transformers at substation sites are suggested for manufacturers and administration of power supply, respectively.

Characterization Procedure for Stand-Alone Merging Units Based on Hardware-in-the-Loop Technology

“…Finally, another fundamental topic to be investigated is the influence of typical external or internal factors on the transformers' accuracy. Therefore, in [18][19][20][21][22], the influence of geometry, burden, magnetic field, and temperature, on both ITs and LPITs, is assessed and described.…”