DUAL-STAGE MAGNETIC EXCITATION HIGH-VOLTAGE PROPORTIONAL STANDARD APPARATUS AND ERROR COMPENSATION METHOD

摘要

A dual-stage magnetic excitation high-voltage proportional standard apparatus and an error compensation method, the apparatus comprising: a first stage iron core (C1), a second stage iron core (C2), a proportional winding (N₁), a proportional winding (N₂), a magnetic excitation winding (N_1e), and a magnetic excitation winding (N_2e); the first iron core (C1) and the second iron core (C2) are both rectangular rings, the perimeter length of the rectangular ring of the first iron core (C1) being greater than the perimeter length of the rectangular ring of the second iron core (C2); the second iron core (C2) is positioned outside the first iron core (C1), one side of the first iron core (C1) being adjacent to one side of the second iron core (C2); the magnetic excitation winding (N_1e) and the magnetic excitation winding (N_2e) are wound on the side of the first iron core (C1) opposite to the side adjacent to the second iron core (C2), and the proportional winding (N₁) and the proportional winding (N₂) are wound on the two adjacent sides of the first iron core (C1) and the second iron core (C2). The present apparatus solves the problem of the low maximum voltage level of existing dual-stage standard apparatuses, and thereby increases the accuracy of single-stage standard apparatuses in high voltages.