高压电器2024，Vol.60Issue(5)：54-60,7.DOI:10.13296/j.1001-1609.hva.2024.05.007
快速真空开关合闸触头弹跳暂态过程研究
Study on Transient Process of Closing Contact Bounce of Fast Vacuum Switch
王协东 1陈萍1
作者信息
- 1. 国网河南省电力公司淇县供电公司,河南鹤壁 456750
- 折叠
摘要
Abstract
The fast vacuum switch with electromagnetic repulsion actuator as the operating mechanism has such ad-vantages as high opening speed,short opening and closing time and low dispersion of opening and closing time,and at present has been widely used in a variety of power equipment.At present,there are many studies on the opening process of fast vacuum switch,but the problems associated with the closing process are less.In this paper,the con-tact bounce of the fast vacuum switch in the closing process is studied.A multi-physical coupling simulation model is set up to describe the closing process of the fast vacuum switch completely.The relationship between v1 and Dmax of the fast vacuum switch is obtained,where v1 is the instantaneous velocity of the first contact between the moving and fixed contacts in the closing process,and Dmax is the maximum bouncing distance of the moving contacts.Ac-cording to this relationship,the critical instantaneous closing velocity vcri in the case of no closing bounce is deter-mined.According to the limitation of vcri,a kind of new oil buffer is designed to adjust the closing travel curve of the fast vacuum switch and achieve the non-bouncing closing.A fast vacuum switch equipped with the new oil buffer is developed,and a special measured platform is constructed to test its closing characteristics.The measured result shows that the error between the measured results and the simulation results is no more than 10%and the non con-tact bounce closing operation is achieved.关键词
快速真空开关/电磁斥力驱动器/多物理场耦合仿真/合闸弹跳Key words
fast vacuum switch/electromagnetic repulsion actuator/multi-physical field coupling simulation/contact bounce引用本文复制引用
王协东,陈萍..快速真空开关合闸触头弹跳暂态过程研究[J].高压电器,2024,60(5):54-60,7.
