Pulse power type permanent magnet linear motor (PMLM) operating mechanism of high-voltage circuit-breaker

Abstract

The invention relates to a pulse power type permanent magnet linear motor (PMLM) operating mechanism of a high-voltage circuit-breaker, belonging to the technical field of a high-voltage circuit-breaker operating mechanism in power transmission and transforming equipment. The operating mechanism comprises a primary iron core, secondary iron cores, motor main shafts and armature windings; wherein,the primary iron core is internally provided with the two symmetrical secondary iron cores, magnetic isolation material is arranged between the two secondary iron cores, one end of every secondary iron core is connected with one motor main shaft, and the armature windings are embedded into the secondary iron cores; the magnetic isolation material is also arranged between the primary iron core andthe end surfaces of the secondary iron cores, and a permanent-magnet is arranged between the side of each secondary iron core and the primary iron core. The invention has the advantages that the particularity of the breaking-closing position is fully considered by the design of the structure of the operating mechanism, so that the magnetic isolation material is particularly designed; the permanent-magnet block is arranged above the static primary iron core; meanwhile, in order to produce larger electromagnetic thrust, the starting time is short, so that higher dynamical property requirement can be reached, thus being well matched with the characteristic requirements of the circuit-breaker.

Description

technical field [0001] The invention belongs to the technical field of high-voltage circuit breaker operating mechanism in power transmission and transformation equipment, and relates to a high-voltage circuit breaker pulse power type permanent magnet linear motor operating mechanism. Background technique [0002] The high-voltage circuit breaker is an extremely important switchgear in the power system, and its operation is directly related to the stability and reliability of the entire system; and the operating mechanism of the high-voltage circuit breaker is an important part of it. It not only ensures the long-term operation of the circuit breaker The reliability of the action, and the requirements of the arc extinguishing characteristics for the operating mechanism must be met. Therefore, whether the design of the operating mechanism of the high-voltage circuit breaker is reasonable plays a vital role in the entire power grid. [0003] The power system is constantly deve...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the defects and deficiencies of the existing operating mechanism such as complex structure and poor controllability, the present invention provides a pulse power type permanent magnet linear motor operating mechanism for high voltage circuit breakers

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