纳米修饰石墨烯薄膜传感器的变压器油中乙炔气体敏感特性

发布时间：2018-09-15 06:16

【摘要】：油浸式电力变压器油中溶解气体的检测对于变压器早期故障诊断和保障电力系统安全稳定至关重要。乙炔是主要的故障特征气体之一,为实现其含量的检测并为变压器绝缘故障类型和严重程度提供决策依据,采用水热法结合层层自组装技术制备了纳米银及氧化锡修饰石墨烯(Ag@SnO_2/rGO)薄膜传感器,并通过扫描电子显微镜(SEM)和X射线衍射仪(XRD)对薄膜结构进行了表征,开展了乙炔气体的敏感特性实验。研究结果表明:纳米银及氧化锡修饰石墨烯薄膜传感器在较低的工作温度下对乙炔气体具有较好的灵敏度,且该传感器具有良好的响应恢复特性、重复稳定性、选择性和低检测限。该研究可为变压器故障气体快速检测及故障诊断提供重要指导。
[Abstract]:The detection of dissolved gas in oil in oil-immersed power transformer is very important for the early fault diagnosis of transformer and the safety and stability of power system. Acetylene is one of the main fault characteristic gases, which can be used to detect the content of acetylene and provide decision basis for the type and severity of transformer insulation fault. Nanocrystalline silver and tin oxide modified graphene (Ag@SnO_2/rGO) thin film sensors were prepared by hydrothermal method and layer-by-layer self-assembly technique. The structure of the films was characterized by scanning electron microscopy (SEM) (SEM) and X-ray diffraction (XRD). Experiments on the sensitive characteristics of acetylene gas were carried out. The results show that the nano-silver and tin oxide modified graphene film sensors have better sensitivity to acetylene gas at lower operating temperature, and the sensor has good response recovery characteristics and repetitive stability. Selectivity and low detection limit. This research can provide important guidance for transformer fault gas fast detection and fault diagnosis.
【作者单位】：中国石油大学(华东)信息与控制工程学院;
【基金】：国家自然科学基金(51407200;51777215) 青岛市科技发展计划(16-6-2-53-nsh) 特高压工程技术国家工程实验室开放基金(NEL201518) 中央高校基本科研业务费专项资金(15CX05041A)~~
【分类号】：TM41

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