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A system has been developed for the detection of super-high-frequency (SHF) partial discharge (PD) at frequencies up to 6 GHz. The system consists of three antennas for capturing PDs and a fast digital oscilloscope for sampling data. One of the antennas is a disk-cone antenna with frequency range below 710 MHz. The other two half TEM horn antennas have been designed and constructed for the frequency range 716 MHz - 5 GHz. To extend the frequency range up to 6 GHz, a methodology has been developed by compensating amplitude-response to frequency-magnitude. The compensation is realised by using multilayer feed-forward neural networks to equalise on amplitude-response. A direct sampling method is used to log the captured PD data. This PD detection system has been implemented to measure PDs at a 400 kV electrical substation (Strathaven, Scottish Power Ltd).
|Number of pages||6|
|Journal||Insight: The Journal of the British Institute of Non-Destructive Testing|
|Publication status||Published - 1 Aug 2009|
- partial discharge
- TEM horn
- neural network
- super high frequency
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Vulnerability of Wireless Network Technology to Impulsive Noise in Electricity Transmission Substations
Glover, I. & Moore, P.
1/09/06 → 30/06/09