高电压技术2026，Vol.52Issue(2)：550-559,10.DOI:10.13336/j.1003-6520.hve.20250404
气体绝缘组合电器内置式气体状态传感技术
Built-in Gas State Sensing Technology for Gas-insulated Switchgear
摘要
Abstract
Abnormal changes in the state of insulating gas within gas-insulated switchgear(GIS)can significantly influ-ence the equipment's insulation performance.Existing gas state detection devices are difficult to accurately reflect the actual internal gas states due to environmental interference.To address this issue,this paper designs a gas state sensing unit centered on a micro-electro-mechanical systems(MEMS)sensor,integrated with a built-in ultra-high frequency(UHF)sensor,enabling internal monitoring of the gas states.To tackle the harsh electromagnetic environment within high-voltage equipment,a full-scale simulation model combining the composite sensor and GIS was developed to analyze the electric field distribution around the sensing unit and electromagnetic interference coupling paths under typical dis-turbances.Moreover,a multi-layer shielded enclosure design for the sensing unit was proposed.The results indicate that the superposition of capacitive and inductive coupling between the interference source and the gas state sensing unit pre-sents the characteristics of multi-modal and wide frequency domain.The designed grounded shielding enclosure,with a silicon steel main body,effectively shields power-frequency voltages and currents while absorbing high-frequency elec-tromagnetic waves.The top aluminum alloy layer reflects most high-frequency electromagnetic waves,and the shielding mesh at the airflow hole further enhances shielding performance.After shielding,the induced voltage on the sensing unit remains within±0.2 V,meeting safety requirements for unit operation.This research provides valuable insights for built-in monitoring of high-voltage equipment and electromagnetic compatibility design for low-voltage units integrated into high-voltage systems.关键词
气体绝缘组合电器/气体状态监测/内置式/电磁兼容/微机电系统传感器Key words
gas-insulated switchgear/gas state monitor/built-in/electromagnetic compatibility/MEMS sensor引用本文复制引用
陈欢,秦妍,史心悦,王昊天,韩旭涛,李军浩..气体绝缘组合电器内置式气体状态传感技术[J].高电压技术,2026,52(2):550-559,10.基金项目
国家自然科学基金(U22B20118).Project supported by National Natural Science Foundation of China(U22B20118). （U22B20118）
