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相关概念视频

Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

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The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
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Reconstruction of Signal using Interpolation01:10

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Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
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相关实验视频

Updated: Jun 11, 2025

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
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基于波纹的弧形信号源定位算法使用一个紧的多方形微条形天线.

Melaty Amirruddin1, Mohd Rafi Adzman2, Nur Adyani Mohd Affendi2

  • 1Faculty of Electrical Engineering Technology, Universiti Malaysia Perlis, Arau, 02600, Perlis, Malaysia. melaty@unimap.edu.my.

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|October 1, 2024
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概括
此摘要是机器生成的。

这项研究引入了一种新的方法,用于精确地检测和定位电力系统中的电弧故障. 通过使用多方形微条形天线和先进的信号处理,它准确地定位弧形源,提高电气安全.

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科学领域:

  • 电气工程 电气工程
  • 电力系统安全 电力系统安全
  • 电磁干扰是一种电磁干扰.

背景情况:

  • 现有的电弧故障检测方法在区分正常和异常条件方面面临挑战,特别是在狭窄的空间.
  • 精确地定位弧形故障对于电力系统安全和维护至关重要.
  • 使用战略位置的天线检测电磁辐射,为有限区域的监测提供了可行的解决方案.

研究的目的:

  • 提出和评估一个完整的实验方法,用于弧断检测和定位.
  • 为了比较离散波段转换 (DWT) 和连续波段转换 (CWT) 在电弧故障检测中信号处理的有效性.
  • 用实验数据评估基于时间到达 (ToA) 的定位方法 (最小方形,高斯-乔丹消除) 的准确性.

主要方法:

  • 使用一个紧的多方形微条形天线来检测来自弧形断层的电磁辐射.
  • 应用离散波纹转换 (DWT) 和连续波纹转换 (CWT) 来处理捕获的信号并隔离弧形签名.
  • 使用到达时间 (ToA) 测量与最小平方和高斯-乔丹消除算法相结合,用于弧源定位.

主要成果:

  • 无论是DWT还是CWT,都有效地将真正的弧形信号与背景噪声分开.
  • 连续波形转换 (CWT) 实现了优异的定位精度,误差范围从0.0615到0.0713m.
  • 离散波纹转换 (DWT) 显示了0.0688到0.0789m之间的局部化误差,而实际的信号捕获误差则在0.0799到0.0844m之间.

结论:

  • 拟议的综合实验和信号处理方法在电弧故障检测和定位方面表现出高精度.
  • 该研究验证了波形变换和基于ToA的方法在提高电力系统安全方面的有效性.
  • 结果支持实验技术的整合,以更好地评估弧形条件,并解决绝缘系统的挑战.