形牙状日志周期UHF天线用于部分放电检测
Chen Chen1, Yutong Zhang1, Mengwei Zhang1
1Xi'an Jiaotong University, Xi'an, Shannxi 710049, China.
The Review of scientific instruments
|May 6, 2025
概括
一个新的超高频天线有效地检测高压设备中的部分放电 (PD). 它的设计允许清晰的信号检测和阶段解析部分放电 (PRPD) 模式生成用于监控和诊断.
科学领域:
- 电气工程 电气工程
- 电磁学 电磁学 电磁学 电磁学
- 高电压工程 高电压工程
背景情况:
- 部分放电 (PD) 检测对于高压电力设备的可靠性至关重要.
- 现有的检测方法可能会面临敏感性和实时监控方面的挑战.
- 超高频 (UHF) 天线用于PD信号检测.
研究的目的:
- 为增强PD检测设计和验证一种新的梯形牙状日志周期超高频天线.
- 为了实现广泛的阻抗带宽和高增益,以改善信号接收.
- 为了证明天线能够产生清晰的PRPD模式用于诊断目的.
主要方法:
- 一个梯形有牙的日志周期天线结构被设计和参数优化.
- 天线性能以阻抗带宽 (VSWR < 5) 和增益测量为特征.
- 在受控的SF6气体环境中进行实验验证,以评估PD信号检测和PRPD模式生成.
主要成果:
- 该天线实现了0.5-3GHz的阻抗带宽和1.75GHz的最大增益6.34dBi.
- 实验结果显示,检测到具有高信号噪声比率 (高达20dB) 的弱PD信号.
- 产生了明确的PRPD模式,与理论预期和商业系统相一致.
结论:
- 拟议的梯形牙状日志周期天线是有效的PD检测在高压设备.
- 天线的性能特征和产生清晰PRPD模式的能力支持其用于实时监控.
- 这项技术在改善故障诊断和确保电力系统可靠性方面具有重大潜力.
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