Effect of sampling rate on the location accuracy of measurements from radiated RF partial discharges signals

O. El Mountassir, B.G. Stewart, S.G. McMeekin, A. Ahmadinia

Research output: Contribution to conferencePaper

5 Citations (Scopus)

Abstract

Partial discharges (PD) are electrical discharges which occur when the insulation system of electrical equipment under high voltage stress starts to break down. Radio frequency measurement methods can be employed to detect the radiated energy from the PD activity and therefore locate the PD source. Based on suitable arrangements of multiple antennas and measured time-differences-of- arrival (TDOA), the three dimensional location of the PD source may be determined using iterative or other triangulation algorithms. This paper evaluates the effect of sampling rate on the location accuracy of two different PD sources with two different energy and frequency contents using a locally customised Y shaped arrangement of four antenna positions. Based on sampling rate, the TDOAs are determined using both cross correlation and thresholding methods. The location is then determined through the application of an iterative standard least squares algorithm (SLS). The results demonstrate that the accuracy and the ability to determine the position of the two located PDs depend on the selected sampling rate, the nature of the signal as well as the TDOA method. © 2012 IEEE.
Original languageEnglish
Pages891-896
Number of pages6
DOIs
Publication statusPublished - 2012
Event11th International Conference on Environment and Electrical Engineering - MSC Armonia, Venice, Italy
Duration: 18 May 201225 May 2012

Conference

Conference11th International Conference on Environment and Electrical Engineering
Abbreviated titleEEEIC 2012
CountryItaly
CityVenice
Period18/05/1225/05/12

Keywords

  • partial discharge
  • cross correlations
  • electrical discharges
  • electrical equipment
  • frequency contents
  • high-voltage stress
  • insulation systems
  • least squares algorithm
  • location accuracy
  • multiple antenna
  • radiated energies
  • radio frequencies
  • radio frequency measurement
  • sampling rates
  • thresholding methods
  • triangulation algorithms
  • radio waves

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  • Cite this

    El Mountassir, O., Stewart, B. G., McMeekin, S. G., & Ahmadinia, A. (2012). Effect of sampling rate on the location accuracy of measurements from radiated RF partial discharges signals. 891-896. Paper presented at 11th International Conference on Environment and Electrical Engineering, Venice, Italy. https://doi.org/10.1109/EEEIC.2012.6221502