高灵敏和选择性乙烯CuO/ZnO异构传感器通过电子旋转在的O2度用于变压器诊断
Mi-Hee Jung1,2, Minjun Kwak1, Junghwan Ahn1
1Energy and Environmental Laboratory, Korea Electric Power Research Institute (KEPRI), 105 Munji-Ro, Yuseong-Gu, Daejeon 34056, Korea.
ACS sensors
|January 2, 2024
概括
本研究介绍了一种新的CuO/ZnO气体传感器,用于在变压器中检测乙 (C2H2). 该传感器表现出高灵敏度和选择性,为变压器监控提供了实用解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 电气工程 电气工程
背景情况:
- 乙 (C2H2) 在变压器中构成爆炸风险,即使度低.
- 目前的检测方法,如GC和PAS不适合广泛的变电站监控.
- 现有的金属氧化物半导体 (MOS) 传感器在变压器典型的低氧环境中缺乏灵敏度.
研究的目的:
- 开发用于变压器中溶解气体分析 (DGA) 的高性能乙气体传感器.
- 研究通过电制造的CuO/ZnO异构结构,以提高C2H2检测.
- 在变压器类条件下确定传感器性能的最佳CuO:ZnO比率.
主要方法:
- 使用电制造CuO/ZnO (CZ) 复合纳米纤维的制造.
- 在模拟变压器环境 (<2% O2) 中测试不同CZ比的传感器性能.
- 评估传感器响应,稳定性和对常见变压器油气的选择性.
主要成果:
- 在200°C时,CuO:ZnO = 8:2 (CZ2) 传感器表现出最高响应 (Rg/Ra = 7.6 到 10 ppm C2H2).
- CZ2传感器表现出极好的稳定性 (>10小时) 和对其他气体的高选择性 (>5倍).
- 最佳的CZ纳米纤维组成在2%O2度下实现了有效的C2H2检测.
结论:
- 开发的CZ2传感器为在变压器中监测低度C2H2提供了高性能解决方案.
- 这项研究是第一个证明有效的DGA传感器在2%O2.2下工作的研究.
- 这些发现为实用,广泛的变压器监控系统铺平了道路.
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