电缆局放超高频传感器的应用与传播特性仿真  

Application of UHF sensor on partial discharge in cable and propagation characteristics simulation

作　　者：付婷婷[1] 胡凯[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《传感器与微系统》2011年第1期54-57,共4页Transducer and Microsystem Technologies

摘　　要：在线监测电缆的局部放电情况是及时发现故障隐患、预测运行寿命及保障电网安全可靠运行的重要手段。简要介绍了超高频传感器的研究方法和原理,并分别对超高频电磁耦合传感器和超高频电容传感器做了分析。根据电磁波在同轴波导中的传播理论,运用高频结构仿真器(HFSS)软件对110 kV电缆中间接头进行仿真,通过仿真可以得出:局放电磁波在电缆接头传播过程中与频率有关,频率越高,衰减就越快。On-line partial discharge（PD） detection on high vohage cable is the most important method to find out hidden failures to predict the operational life and to ensure safe and reliable of power grid. The methods and principles of UHF sensor is introduced, electromagnetic coupling sensor and capacitive sensor are analyzed respectively. According to the propagation theory of the electromagnetic wave in coaxial waveguidc, using the software HFSS to simulate the electromagnetic field analysis of 110 kV cable joint. The simulation results indicates that the propagation of electromagnetic wave of PD in cable joint is related to the frequency, the higher the frequency is, the faster the attenuation is.

关 键 词：局部放电 超高频 在线监测 高频结构仿真器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]