Biax arc suppression coil

Abstract

A biasing type arc suppression coil, belongs to electric technique field. This invention includes: biasing coil\three-limb core that takes grade 2 to grade 3 reduction of cross section in the compensation coil and magnetic circuit, the biasing coil is two series-wound cylinder-like package, each sleeves the two side limbs of the three-limb core, the compensation coil is 3 cylinder-like package, make the two cylinder-like package parallel connection, then connecting them with the third cylinder-like package in series, the two parallel connecting cylinder-like package are sleeved on exterior of the biasing at the three-limb core's two side limbs, the third cylinder-like package sleeves on the middle limb of three-limb core, and ring the air gap of the middle limb of three-limb core.

Description

technical field [0001] The invention relates to an arc suppressing coil, in particular to a bias magnet arc suppressing coil, which belongs to the technical field of degaussing. Background technique [0002] In the medium-voltage distribution network (6-66KV voltage level power grid in my country), single-phase grounding faults account for more than 80% of the total faults, which is very important for the treatment of single-phase grounding hazards. When the single-phase grounding capacitor current is large, it is necessary to install an arc suppression coil at the neutral point to compensate the grounding current. At present, the compensation current of the widely used arc suppressing coils (such as the turn-adjusting type and the capacity-adjusting type) is adjustable in stages, and the compensation current cannot be adjusted continuously, which affects the compensation effect. The moving core type (adjustable iron core air gap type) can continuously adjust the current, b...

AI Technical Summary

Problems solved by technology

The third is that the harmonic content is large, and the effective use adjustment depth that meets the harmonic requirements is small

Images