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局部放电宽带全频段高增益谐振腔超高频传感器研究

Partial Discharge Wideband Full-Band High-Gain Resonant Cavity UHF Sensor Research.

作者信息

Liao Chengqiang, Zhang Lei, Zhang Guozhi, Lu Changyue, Zhang Xiaoxing

机构信息

Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan 430068, China.

Electric Power Research Institute, Guangxi Power Grid Co., Ltd., Nanning 530023, China.

出版信息

Sensors (Basel). 2023 Aug 1;23(15):6847. doi: 10.3390/s23156847.

DOI:10.3390/s23156847
PMID:37571631
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10422584/
Abstract

To meet the real demand for broadband full-band high-gain antenna sensors in the process of partial discharge (PD) Ultra-High frequency (UHF) detection test and online monitoring of power equipment, this paper builds a resonant cavity monopole UHF antenna sensor based on Fabry-Perot resonant cavity antenna technology, conducts the sensor Voltage Standing Wave Ratio (VSWR) optimization study using curved flow technology, conducts the sensor gain optimization study using slot dual resonant structure, and, finally, tests the sensor performance using the built PD detection test platform. The resonant cavity monopole antenna exhibits outstanding VSWR performance in the frequency range of 0.37 GHz-3 GHz, according to simulation and test data: the average gain in the frequency range of 0.3 GHz-3 GHz is 4.92 dBi, and the highest gain at the primary resonant frequency of 1.0 GHz is 7.16 dBi, with good radiation performance over the whole frequency spectrum. The electromagnetic pulse signal sensed by the UHF sensor developed in this paper can demonstrate the energy spectrum distribution characteristics of PD radiation electromagnetic wave signal more comprehensively, laying a firm technical foundation for thoroughly understanding the electromagnetic wave radiation characteristics of various types of PD insulation defects of various power equipment and the selection of a specific direction for its supporting optimization.

摘要

为满足电力设备局部放电（PD）超高频（UHF）检测试验及在线监测过程中对宽带全频段高增益天线传感器的实际需求，本文基于法布里-珀罗谐振腔天线技术构建了一种谐振腔单极子UHF天线传感器，采用曲线流技术进行传感器电压驻波比（VSWR）优化研究，采用缝隙双谐振结构进行传感器增益优化研究，最后利用搭建的PD检测试验平台对传感器性能进行测试。根据仿真和测试数据，该谐振腔单极子天线在0.37 GHz - 3 GHz频率范围内展现出优异的电压驻波比性能：在0.3 GHz - 3 GHz频率范围内平均增益为4.92 dBi，在1.0 GHz主谐振频率处最高增益为7.16 dBi，在整个频谱范围内具有良好的辐射性能。本文研制的UHF传感器所感测的电磁脉冲信号能够更全面地展现局部放电辐射电磁波信号的能谱分布特征，为深入了解各类电力设备不同类型局部放电绝缘缺陷的电磁波辐射特性及其配套优化的特定方向选择奠定了坚实的技术基础。

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