运载火箭中频交流供电线路的远程漏电检测技术研究  

Research on Remote Leakage Monitoring Technology for Medium Frequency AC Power Supply Circuit of Launch Vehicle

作　　者：徐文晓 卢頔 张学英 路航 李璨 XU Wenxiao;LU Di;ZHANG Xueying;LU Hang;LI Can(Beijing Institute of Astronautical Systems Engineering,Beijing,100076)

机构地区：[1]北京宇航系统工程研究所,北京100076

出　　处：《导弹与航天运载技术（中英文）》2024年第3期85-92,共8页Missiles and Space Vehicles

摘　　要：为提升运载火箭测试效率,优化射前测发流程,改变传统手动断开电缆进行漏电检测的方法,面向运载火箭远程漏电检测需求,开展了运载火箭中频交流供电线路的远程漏电检测技术研究,保持原有箭地供电线路,对漏电检测电路进行设计及精度计算分析,并采取自检测等设计提高系统的可靠安全性。经试验验证,该系统满足在线连续漏电检测不少于24h,精准漏电检测范围为500kΩ~50MΩ,漏电检测精度为±10%,具有高可靠、高精度、高效率等特点,并成功应用于大型低温运载火箭的测发流程中,对于提升运载火箭自动化测试水平、实现前端无人值守具有重要意义。In order to improve test efficiency of launch vehicle and optimize the process of prelaunch testing,and to alter the traditional method of disconnecting electric cables manually for leakage monitoring,based on maintaining the original power supply circuit,a leakage monitoring technology research for the medium frequency alternating current supply circuit is proposed and developed.At the same time,the precision of leakage monitoring circuit is analyzed and the self-detection method is used to advance the reliability and safety of the system.The test results show that the system realized online leakage monitoring lasting no less than 24hours,and the range of leakage monitoring is 500KΩ~50MΩwith the precision better than 10%,satisfying the monitoring requirements.Finally,the system experiment is carried out in the prelaunch testing of large cryogenic launch vehicle with high-reliability,high-precision and high-efficiency,and has significance of improving the level of automated testing and realizing unattended fore-end of launch vehicle.

关 键 词：运载火箭 中频 交流电供电线路 远程控制 漏电检测 

分 类 号：V442[航空宇航科学与技术—飞行器设计]