摘要
采用传统方法检测航天器用导电滑环绝缘性能存在检测精度低、识别性差等问题。文章提出采用局部放电测试方法进行绝缘性能评价,通过调整测试电压和加压时间,研究了绝缘环厚度、环氧树脂灌封胶灌封和导线状态对滑环局部放电的影响。结果表明:局部放电量随测试电压的升高而显著增加,未灌封滑环的局部放电临界电压为1.0 kV;灌封防护可减小放电量,但内部空隙仍会导致局部放电异常;添加纳米填料的环氧树脂灌封胶能有效抑制放电;增加绝缘环厚度可提升电气性能,而导线弯折或过长会加剧放电。所做研究可为航天器用滑环的设计、无损检测和可靠性评价提供新方法和思路。
Traditional methods for detecting the insulation performance of conductive slip rings for spacecraft suffer from low accuracy and poor identification.A partial discharge testing method was employed to evaluate the insulation performance.The investigation examined the influence of insulation ring thickness,epoxy resin potting,and wire state on partial discharge in slip rings by adjusting the test voltage value and voltage application time.The results show that the partial discharge quantity increases significantly as the test voltage increases,and the critical voltage of partial discharge in unsealed slip rings is 1.0 kV.Potting protection reduces partial discharge,but internal voids can still lead to abnormal partial discharge.Epoxy resin potting adhesive with nano-fillers can effectively inhibit partial discharge.Increasing the insulation ring thickness may help improve the electrical performance,while wires that are bent or too long may exacerbate partial discharge.The research provides insights for the design,non-destructive testing,and reliability evaluation of conductive slip rings for spacecraft.
作者
王鹏超
杜元晖
孙二双
刘钦
陈宇鹏
WANG Pengchao;DU Yuanhui;SUN Ershuang;LIU Qin;CHEN Yupeng(MicroDrive Space Ltd.,Beijing 100160,China)
出处
《航天器环境工程》
2025年第1期91-97,共7页
Spacecraft Environment Engineering
关键词
导电滑环
绝缘性能
局部放电
放电量
环氧树脂灌封
试验研究
slip ring
insulation performance
partial discharge
discharge quantity
epoxy resin potting
experimental study
