Large current measuring device with anti-skin effect

Abstract

The invention discloses a large current measuring device with an anti-skin effect. The large current measuring device with the anti-skin effect comprises a coil mother plate, a positive electrode, a negative electrode, multi-split current conduits, and a signal acquisition and processing device; large current to be measured flowing through the positive electrode and the negative electrode is introduced into the multi-split current conduits and is split into multiple parts, each current conduit penetrates through the coil center on the coil mother plate to generate induced voltage, and a largecurrent value is obtained by measuring the superimposed induced voltage; the coil mother plate adopts an integrated forming technology, consistency of each coil is high, electromagnetic interference between adjacent coils is reduced, and accuracy of measurement results is improved; the current flowing through each current conduit is very small compared to total current, and the skin effect is effectively reduced; current directions of adjacent conduits are opposite, magnetic induction intensity around a conductor is weaken, and electric force between conductors is decreased; and multiple current conduits increase the heat dissipation area of the measuring device, and the problems that the measuring range is too narrow or the upper limit is difficult to be raised due to the heating effect of the current are solved.

Description

technical field [0001] The invention belongs to the technical field of large current measurement, and more specifically relates to a large current measurement device with anti-skin effect. Background technique [0002] Today, high-current technology has been widely used in many high-tech fields such as electric power technology, electromagnetic force application technology, pulse power technology, nuclear physics technology, and electrochemical technology. Especially in electrochemical industries such as electric arc furnace metal smelting, the precise measurement and control of large currents (such as arc current in electric arc furnaces) plays a vital role, which can not only shorten the smelting cycle, improve production efficiency, extend The service life of the equipment can be improved, and better smelting materials can be obtained under the same smelting conditions. [0003] At present, the commonly used high-current measurement devices include: shunt, air-core coil ...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects of the prior art, the object of the present invention is to provide a large current measuring device with anti-skin effect, aiming to solve the problem that the traditional air-core coil current transformer is not strong enough to withstand large current and the current measurement accuracy is low

Images