摘要
通过对GIS内置传感器耦合电磁原理分析表明,传感器不仅耦合波导内部的电磁波,也会接收安装处形成的缝隙天线所激发的电磁波。对研制的内置圆板传感器建立天线模型进行分析表明,圆板天线半径和引线长度对圆板天线频率响应特性有很大影响。在实验室GIS模拟装置上,使用内置传感器对金属突出物缺陷产生的局部放电信号进行实测,试验结果表明制作的内置传感器可以用于GIS局部放电信号超高频检测。
The paper analyzes the inner sensor抯 coupling characteristics for the electromagnetic wave in GIS theoretically. The sensor designed in GIS can receive the electromagnetic wave not only in wave-guide but also produced by aperture antenna in place of sensor. Through analysis of sensor using the antenna model, it indicates that the radius and down-lead length of a disc coupler can influence frequency response characteristics. The measured results of partial discharge produced by metallic prominence disfigurement are given, and it is shown that the sensors designed in GIS are available for the UHF measurement of partial discharge in GIS.
出处
《电工技术学报》
EI
CSCD
北大核心
2004年第5期71-75,共5页
Transactions of China Electrotechnical Society
基金
国家自然科学基金资助项目(50377045)
