Ultra wide band VHF/UHF radio interferometer system for detecting partial discharge source
Ultra wide band VHF/UHF radio interferometer system for detecting partial discharge source
复制标题
用于检测局部放电源的超宽带 VHF/UHF 无线电干涉仪系统
DOI：
10.1109/pesw.2002.985270
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
M. Kawada
中科院分区：
文献类型：
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作者：
M. Kawada
高压电力设备和设施中材料缺陷产生的局部放电（PD）所发射的电磁（E-M）波是包含VHF/UHF分量的宽带信号。本文提出了一种用于PD源探测的超宽带VHF/UHF无线电干涉仪系统（UWB-VURIS），并进行了初步设计、构建和测试。该系统的思想是通过快速傅里叶变换（FFT）提取接收到的一对E-M信号在不同频率下的相位差，并计算PD源发射的E-M波的到达角。它可以是小尺寸的，更适合于紧凑和便携式系统。由于不需要在多个点布置多个天线，因此可以减少测量现场的操作时间。室内测试结果表明，uwb - vuri能够估计出PD源发射的E-M波的到达角。
The electromagnetic (E-M) waves emitted from partial discharge (PD) generated by material defects in high-voltage electric power apparatus and facilities are broadband signals including VHF/UHF components. In this paper, the author proposes an ultra wide band VHF/UHF radio interferometer system (UWB-VURIS) for detecting PD source, which has been originally designed, constructed and tested. The system is based on the idea extracting the phase differences at different frequencies between a pair of the received E-M signals by the fast Fourier transform (FFT) and computing the arrival angle of the E-M waves emitted from PD source. It can be small-sized, more suitable for compact and portable systems. It is able to reduce the operating time at the measurement site because it is not needed to arrange many antennas at the many points. The indoor test results indicate that the UWB-VURIS is able to estimate the arrival angle of the E-M waves emitted from PD source.