一种利用设备壳体槽作为传感天线进行局部放电测量的新方法

2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI:10.1109/ISAPE.2018.8634098

Chong Sun, Hongfu Guo, W. Hao

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引用次数: 1

摘要

现有运行中的高压电气设备在检测局部放电(PD)信号时，大多采用外部或内部超高频(UHF)检测传感器，这给已经运行的设备带来了困难。基于缝隙天线的基本理论和设备壳体本身，提出了一种新的局部放电检测方法:利用设备壳体已有的缝隙作为局部放电测量的传感天线。本文利用电磁仿真软件Ansoft HFSS建立仿真模型，研究壳槽作为传感天线的特性。并进行了实验室模拟。研究表明，壳体槽可以作为天线接收设备内部PD的电磁波，并根据壳体槽的不同尺寸接收不同频率范围的PD信号，大大降低了PD在线检测的难度。本研究的结论颠覆了传统的UHF PD传感器设计，为改进UHF探测系统的传感器设计提供了重要的指导方向和理论依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Novel Method for PD Measurement Using the Equipment Shell Slot as Sensing Antenna

Most of the existing high-voltage electrical equipment in operation uses external or internal Ultra High Frequency (UHF) detection sensors when detecting partial discharge (PD) signals, which brings difficulties to the already operating equipment. Based on the basic theory of slot antenna and the equipment shell itself, a novel method for PD detection is proposed in this paper: use the existing slots of the equipment shell as sensing antenna for PD measurement. In this paper, simulation models are built by the electromagnetic simulation software Ansoft HFSS to study the characteristics of shell slots as sensing antennas. The Laboratory simulations are also conducted. The research shows that the shell slot can be used as an antenna to receive the electromagnetic wave of PD inside the equipment and receive PD signals of different frequency ranges based on different sizes of the shell slot, which greatly reduces the difficulty of on-line PD detection. The conclusion of this study subverts the conventional design of UHF PD sensor and provides an important guiding direction and theoretical basis for improving the sensor design of UHF detection system.

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2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)

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