开发一个多通道超宽带电磁短暂测量系统
Shaoyin He1, Xiangyu Chen1, Bohao Zhang1
1State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
Sensors (Basel, Switzerland)
|February 26, 2025
概括
一个新的多通道系统为恶劣的电磁环境提供超宽带短暂电场测量. 它使用数字采样和光纤进行稳定,高带宽的数据采集,这对于电力系统和车辆至关重要.
科学领域:
- 电气工程 电气工程
- 电磁学 电磁学 电磁学 电磁学
- 测量科学 测量科学 测量科学
背景情况:
- 复杂的电磁环境需要强大的电场传感器进行免疫测试.
- 现有的传感器在动态范围,响应速度,带宽和干扰易感性方面面临限制.
- 精确的短暂电场测量对于电力系统,航空航天和汽车应用至关重要.
研究的目的:
- 引入一种新的多通道超宽带短暂电场测量系统.
- 解决电磁免疫测试中传统模拟信号传输的局限性.
- 为在具有挑战性的电磁条件下提供可靠电场测量的解决方案.
主要方法:
- 使用现场可编程门阵列 (FPGA) 技术开发具有前端数字采样的多通道系统.
- 利用光纤传输数字信号,克服模拟传输的不稳定性和带宽问题.
- 结合广泛的模拟带宽 (DC到1.65 GHz) 和高速同步 (300 皮秒).
主要成果:
- 该系统实现了从DC到1.65GHz的模拟带宽,超过了1GHz的要求.
- 通过光纤传输数字信号可确保稳定性,准确性和强度,抵御强大的电磁干扰.
- 同时四通道信号接入,具有皮秒级同步和灵活的传感器更换功能.
结论:
- 开发的系统对于在强电磁环境 (如变电站和车辆) 中进行测量非常有效.
- 它可以在线监控,故障诊断和精确地定位高压电力设备中的辐射源.
- 该系统的性能通过HVDC转换站的实践测试来验证,证明其适用性.
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