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用于 GIS 内置局部放电检测的高灵敏度柔性低剖面螺旋天线传感器设计。

Design of High-Sensitivity Flexible Low-Profile Spiral Antenna Sensor for GIS Built-in PD Detection.

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.

Wuhan NARI Co., Ltd. of State Grid Electric Power Research Institute, Wuhan 430073, China.

出版信息

Sensors (Basel). 2023 May 13;23(10):4722. doi: 10.3390/s23104722.

DOI:10.3390/s23104722
PMID:37430636
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10224168/
Abstract

Spiral antenna sensors are commonly used in partial discharge (PD) ultra-high frequency (UHF) detection in gas-insulated switchgears (GISs). However, most of the existing UHF spiral antenna sensors are based on a rigid base and balun, such as FR-4. The safe built-in installation of antenna sensors requires the complex structural transformation of GISs. To solve this problem, a low-profile spiral antenna sensor is designed based on a polyimide (PI) flexible base, and its performance is optimized by improving the clearance ratio. The simulation and measurement results show that the profile height and diameter of the designed antenna sensor is 0.3 mm and 137 mm, which is 99.7% and 25.4% smaller than the traditional spiral antenna. Under a different bending radius, the antenna sensor can maintain VSWR ≤ 5 in 650 MHz~3 GHz, and its maximum is up to 6.1 dB. Finally, the PD detection performance of the antenna sensor is carried out on a real 220 kV GIS. The results show that, after being built in, the PD with a weak discharge magnitude of 4.5 pC can be effectively detected by the antenna sensor, and the antenna sensor has the ability to quantify the severity of PD. In addition, through the simulation, the antenna sensor has potential for the detection of micro water in GISs.

摘要

螺旋天线传感器常用于气体绝缘开关设备（GIS）中的局部放电（PD）超高频（UHF）检测。然而，大多数现有的 UHF 螺旋天线传感器基于刚性基底和巴伦，例如 FR-4。天线传感器的安全内置安装需要对 GIS 进行复杂的结构转换。为了解决这个问题，设计了一种基于聚酰亚胺（PI）柔性基底的低轮廓螺旋天线传感器，并通过提高间隙比来优化其性能。仿真和测量结果表明，所设计的天线传感器的轮廓高度和直径为 0.3mm 和 137mm，分别比传统螺旋天线小 99.7%和 25.4%。在不同的弯曲半径下，天线传感器可以在 650MHz~3GHz 范围内保持 VSWR≤5，其最大值高达 6.1dB。最后，在真实的 220kV GIS 上进行了天线传感器的 PD 检测性能测试。结果表明，内置后，天线传感器可以有效检测放电幅度较弱的 4.5pC 的 PD，并且该天线传感器具有量化 PD 严重程度的能力。此外，通过仿真，该天线传感器在 GIS 微水检测方面具有潜力。

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