高性能UHF GIS局放传感器:设计改进与性能评估

High-performance UHF GIS partial discharge sensor: design improvements and performance evaluation

ES评分 0

DOI 10.12208/j.jeea.20250003
刊名
Journal of Electrical Engineering and Automation
年,卷(期) 2025, 4(1)
作者
作者单位

上海欧秒电力监测设备有限公司 上海

摘要
UHF(特高频)局放传感器通过捕捉GIS内部局部放电的超高频电磁波信号实现监测,但由于传统的GIS内置UHF传感器灵敏度性能不够高,导致实际应用中存在有效性不足的问题。本文提出一种新的设计方案,采用双层阻抗匹配环和梯度渐变天线振子,实现双谐振点特性,展宽频带并增强接收能力。仿真与实验表明,该设计显著提升 GIS 内置局放传感器频响特性,平均有效高度提升了58%;最低有效高度提升了100%,传感器检测灵敏度可达到3pC,有效解决了应用中检测有效性问题。
Abstract
Ultra-High Frequency (UHF) partial discharge sensors monitor Gas Insulated Switchgear (GIS) by capturing internal ultra-high frequency electromagnetic wave signals generated by partial discharges. However, traditional built-in UHF sensors in GIS suffer from insufficient sensitivity, leading to limited effectiveness in practical applications. This paper proposes a novel design incorporating dual-layer impedance matching rings and gradient-tapered antenna dipoles to achieve dual-resonance characteristics, thereby broadening the frequency bandwidth and enhancing signal reception capability. Simulation and experimental results demonstrate that this design significantly improves the frequency response characteristics of GIS sensors, with an average effective height increased by 58% and the minimum effective height elevated by 100%. The sensor achieves a detection sensitivity of 3 pC, effectively resolving application challenges related to detection reliability.
关键词
UHF局放传感器;灵敏度;GIS设备;天线设计
KeyWord
UHF partial discharge sensor; Sensitivity; Gas-insulated switchgear (GIS); Antenna design
基金项目
页码 17-20
  • 参考文献
  • 相关文献
  • 引用本文

高存玉, 黄正. 高性能UHF GIS局放传感器:设计改进与性能评估 [J]. 电气工程与自动化. 2025; 4; (1). 17 - 20.

  • 文献评论

相关学者

相关机构