东北电力技术2024，Vol.45Issue(6)：12-16,5.
基于压力感知的开关触头电接触故障仿真研究
Simulation Research on Electrical Contact Failure of Switch Contacts Based on Pressure Sensing
摘要
Abstract
Because of the airtightness of the gas insulated switchgear(GIS)structure and the relatively fixed design of the internal structure,it leads to the fact that it is not easy to find out when a fault occurs inside the GIS.Based on this,electric field-magnetic field coupling calculates the magnetic field strength of GIS.At the same time,the simulation calculation is based on the structure field.It establishes the three-dimensional simulation model of dynamic and static contact to verifies the accuracy of the simulation structure.Combined with the theoretical model of contact resistance and contact pressure,it analyzes the influence of insertion depth on contact pressure and contact resistance.The results show that the magnetic field strength inside the tube is significantly smaller than that in the outer diameter of the main conductor.When the insertion depth of the movable and static contacts is smaller,it makes the contact pressure smaller,resulting in a higher contact resistance.This phenomenon can lead to accelerated damage to the movable and static contacts,and eventually to a state of gradual failure.Therefore,electrical contact failure within the GIS can be detected by the insertion depth of the switch contacts.关键词
GIS/接触电阻/插接深度/电接触故障Key words
GIS/contact resistance/insertion depth/electrical contact failure分类
信息技术与安全科学引用本文复制引用
何龙,朱咏明,李勇,张良武,李存明..基于压力感知的开关触头电接触故障仿真研究[J].东北电力技术,2024,45(6):12-16,5.基金项目
国网昌吉供电公司"五小"创新服务项目(DG30CJ230001) （DG30CJ230001）
