Research on structure design of 12kV rotation disc vacuum interrupter

Abstract

The synchronization breaking technology which is leading in the vacuum circuit breaker has got general concern in electrical apparatus industry, and the dispersion of each single phase interrupter and operating mechanism parameters is one of the most important influencing factors. Based on this, a new structure with three-phase vacuum interrupter in the same chamber was proposed in this paper, and so as to make the research of the concrete structure design which has applied for a invention patent. In this paper, the entirety structure design of the new rotation disc vacuum interrupter has been studied based on the electric field numerical simulation of the three-dimensional entire field. Aiming at the problem that the structure of the conductor poles in the center of the vacuum interrupter is too compact, the researches on the distribution of electric field and the insulation structure rationality have been studied. Aiming at the contact structure of the new rotation breaking and the design feature of the new arc type shielding case, the researches on structure design of contact and new arc type shielding case have been studied based on electric field analysis. The researches show that the new breaker can reduce its volume while meeting the synchronization of breaking.