Evolutionary Law of Contact Condition and Prestrike Characteristics in VI Under Inrush Current Erosion

Le résumé fourni par la source

Vacuum circuit breakers (VCBs) are widely used in reactive power compensation systems for switching capacitor banks due to their high reliability, low maintenance requirements, suitability for frequent operations, and environmental friendliness. Understanding the impact of inrush current erosion on the contact surface condition is crucial for improving the performance of VCBs in capacitor bank switching and for studying the dispersion of prestrike behavior. At the same time, the prestrike characteristics of VI after inrush current erosion were obtained. This study investigates the contact surface condition during the closing process based on a method for measuring the contact surface condition under DC voltage. The contact surface condition is characterized by the field enhancement factor $\boldsymbol{\beta}$. The relationship between $\boldsymbol{\beta}$ and the prestrike gap was established. This study provides theoretical reference for the insulation design of vacuum arc chambers and the vacuum breakdown mechanism research.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.