基于吉赫兹横电磁波室的特高频传感器性能评价方法研究  

Research on Performance Evaluation Method of Ultra High Frequency Sensors Based on Gigahertz Transverse Electromagnetic Cell

作　　者：杨圆[1] 毕建刚[1] 吴旭涛[2] 袁帅[1] 黄智伟[3] 

机构地区：[1]中国电力科学研究院,北京100192 [2]国网宁夏电力公司电力科学研究院,银川750001 [3]国网福建省电力有限公司福州供电公司,福州350009

出　　处：《高压电器》2016年第11期75-80,共6页High Voltage Apparatus

基　　金：国家电网公司科技项目(GY71-15-039)~~

摘　　要：特高频局部放电检测法在GIS设备现场状态检测中得到了广泛应用,但传感器性能良莠不齐制约了现场应用效果。为研究特高频传感器对局部放电引发的电磁波信号的响应特征,基于吉赫兹横电磁波室开展了传感器扫频试验研究,在传感器有效检测频段内将一恒定电场强度扫频信号注入横电波室,检测传感器电压信号输出强度,用输出与输入信号强度比值的方式来表征传感器的响应特征,并与传统的脉冲分解法和驻波比法进行了比较分析,证明了该方法得到的结果是准确的。文中还比较了不同输入强度信号情况下传感器响应特征曲线,分析表明,该方法还可以获得更多传感器检测能力细节,如各频点的响应能力和传感器的检测灵敏度及饱和区间等,该方法为进一步深入研究特高频传感器性能评价方法提供了理论和实践依据。Ultra high frequency （UHF）partial discharge detection technology has been widely used in state detection of GIS equipment, but the performance of the sensor for detection varies to restrict field application effect of this technology. To investigate the UHF sensor＇s response characteristics to electromagnetic wave signal caused by partial discharge, the frequency sweeping test for the sensor was conducted based on gigahertz transverse electromagnetic cell. By injecting continuous sweeping frequency sine wave signal with constant intensity into the transverse electromagnetic cell, the UHF sensor＇s output was obtained within effective detection band, and the intensity ratio of output signal to input signal is adopted to characterize the performance evaluation method.

关 键 词：特高频传感器 扫频法 响应特征 评价方法 GTEM小室 

分 类 号：TM63[电气工程—电力系统及自动化] TM855