|本期目录/Table of Contents|

[1]关卫军,周 苑,王爱华,等.基于石英增强光声光谱技术的微水传感器在电力系统中的应用研究[J].工业仪表与自动化装置,2024,(02):91-96.[doi:DOI:10.19950/j.cnki.CN61-1121/TH.2024.02.016]
　GUAN Weijun,ZHOU Yuan,WANG Aihua,et al.Application research of micro water sensor based on quartz enhanced photoacoustic spectroscopy technology in power system[J].Industrial Instrumentation & Automation,2024,(02):91-96.[doi:DOI:10.19950/j.cnki.CN61-1121/TH.2024.02.016]
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基于石英增强光声光谱技术的微水传感器在电力系统中的应用研究(PDF)

《工业仪表与自动化装置》[ISSN:1000-0682/CN:61-1121/TH]

卷:
期数:
2024年02期
页码:
91-96
栏目:
出版日期:
2024-04-15

文章信息/Info

Title:
Application research of micro water sensor based on quartz enhanced photoacoustic spectroscopy technology in power system
文章编号:
1000-0682（2024）02-0091-06
作者:
关卫军; 周 苑; 王爱华; 边松岩
（陕西省计量科学研究院, 陕西 西安 710100）
Author(s):
GUAN Weijun; ZHOU Yuan; WANG Aihua;  BIAN Songyan
（Shaanxi Institute of Metrology,Shaanxi Xi’an 710100,China)
关键词:
石英增强光声光谱; 痕量气体传感器; 湿度传感器
Keywords:
quartz enhanced photoacoustic spectroscopy;  trace gas sensor;  humidity sensor
分类号:
TP212
DOI:
DOI:10.19950/j.cnki.CN61-1121/TH.2024.02.016
文献标志码:
B
摘要:
在SF6气体绝缘高压气体电力系统中，H2O是一种很难去除且有危害的杂质，它不仅会降低绝缘性能，还会产生酸性气体分解物，腐蚀破坏电气设备，造成SF6气体泄漏，对人身和环境造成严重的安全隐患。该文利用近红外商用分布式反馈（DFB）二极管激光器，研制了一种在SF6缓冲气体中，基于石英增强光声光谱（QEPAS）技术的亚ppm级水汽传感器系统。由于SF6的物理常数与N2或空气有很大差异，裸石英音叉（QTF）的谐振频率和Q因子分别为32 763 Hz和4173。通过对声微谐振器（AmR）参数、气体压力和调制深度进行实验优化，检测时间为1 s，检测限为0.49 ppm，为电力系统安全监测提供了有力的预防工具。
Abstract:
In SF6 insulated high-voltage gas power systems, H2O is the most problematic impurity which not only decreases insulation performance but also creates an acidic atmosphere that promotes corrosion. Corrosion damages electrical equipment and leads to leaks, which pose serious safety hazards to people and the environment. A QEPAS-based sensor system for the sub-ppm level H2O detection in SF6 buffer gas was developed by use of a near-infrared commercial Distributed Feedback（DFB ）diode laser. Since the specific physical constants of SF6 are strongly different from that of N2 or air, the resonant frequency and Q-factor of the bare quartz tuning fork (QTF) had changed to 32,763 Hz and 4173, respectively. After the experimental optimization of acoustic micro-resonator (AmR) parameters, gas pressures, and modulation depths, a detection limit of 0.49 ppm was achieved for an averaging time of 1 s, which provided a powerful prevention tool for the safety monitoring in power systems.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2023-10-16第一作者:关卫军(1980—),男,陕西西安人,工程硕士,高级工程师,研究方向为仪器仪表工程、计量检定校准。E-mail:9932876@qq.com
更新日期/Last Update: 1900-01-01