Winding process of electronic current mutual inductor based on Rogowski coil

Abstract

The invention provides a winding process of an electronic current mutual inductor based on a Rogowski coil, which comprises the steps of: (1) depicting an identifying break line uniformly on the outer surface of a circular coil framework, wherein the break line is vertical to the circumference of the circular coil framework, and distances between adjacent break lines are equal; and (2) winding a loop first along a loop groove of the coil framework; and then, maintaining a constant hand power with the break line as reference, winding a coil uniformly on the coil framework so that the turns of the coils between adjacent break lines is equal in number. According to the winding process of the electronic current mutual inductor based on the Rogowski coil provided by the invention, the coil is winded with the break line as reference, and the verticality of the wire turn section relative to the coil framework is ensured in low cost, and the wire turn is distributed compactly and uniformly, so that the electromagnetic parameters of the coil are optimized, and the consistency of the wire turn of the coil is ensured, and uniformity of the output voltage of the coil is ensured. The winding process of the electronic current mutual inductor based on the Rogowski coil provided by the invention facilitates batch production.

Description

technical field [0001] The invention belongs to the technical field of electrical equipment, and relates to a coil winding process of an electronic current transformer based on a Rogowski coil. Background technique [0002] With the construction of my country's smart grid and the development of technology, the application of electronic current transformers in smart substations has been initially promoted, mainly used to complete the precise measurement and protection of the primary conductor current. In the field of medium voltage level, the coils of electronic current transformers are mainly Rogowski coils (air core coils) and low power iron core coils. Electronic current transformers based on Rogowski coils have attracted attention because of their good linearity, wide frequency bandwidth, and non-saturation. There are many factors that affect the accuracy of the Rogowski coil, among which the uniformity and tightness of the coil winding and the verticality of the plane o...

AI Technical Summary

Problems solved by technology

[0003] Winding on a traditional winding machine, there are problems such as the coil skeleton is easily deformed when the coil skeleton is positioned, the winding is easy to break, and the positioning gap of each link of the winding machine system is too large, so it is difficult to wind high-precision Rogowski coils tightly and evenly.

In the traditional manual winding process, there are problems such as the tight and uniform winding of the turns is difficult to control, the cross section of the turns is not easy to be perpendicular to the coil skeleton, and the loop manufacturing process is not sophisticated enough. Ultimately, the inherent output accuracy of the coil cannot be well guaranteed. More inconvenient for mass production

Images