Effect of Terminating Resistance on High Frequency Behaviour of Rogowski Coil for Transient Measurements

  • M. Shafiq Aalto University, Finland
  • M. Lethonen Aalto University, Finland
  • L. Kutt Tallinn University of Technology, Estonia.
  • G. A. Hussain Aalto University, Finland
  • M. Hashmi Department of Energy Systems at VTT Technical Research Centre of Finland
Keywords: Partial discharges, Rogowski coil, calibration, diagnostic, transients, measurement

Abstract

Partial Discharge (PD) current measurements have been widely used to assess the insulation condition of power components. Rogowski coil is a low cost current sensor specifically meant for high frequency transient diagnostics such as PDs in high voltage (HV) power apparatus. This paper presents the design of Rogowski coil for transient measurements. For the designed prototype of Rogowski coil, correct selection of terminating resistance is of high importance to calibrate its response for accurate measurement of the PD current waveforms. Effect of terminating resistance for the coil model is analysed based on theoretical, practical and simulated investigations. Simulated model of the coil is used to determine the behaviour of induced current through non-physical inductive and capacitive elements of Rogowski coil. The Electromagnetic Transient Program-Alternative Transient Program (EMTP-ATP) is used to implement and to analyze the model of Rogowski coil. The comparison of practical and simulated results validates the designed model of the coil. The paper explores EMTP-ATP as an efficient tool to analyze and modify the transient behaviour of Rogowski coil for high frequency pulse measurements.

DOI: http://dx.doi.org/10.5755/j01.eee.19.7.2070

Author Biographies

M. Shafiq, Aalto University, Finland
Department of Electrical Engineering
M. Lethonen, Aalto University, Finland
Department of Electrical Engineering
L. Kutt, Tallinn University of Technology, Estonia.
Tallinn University of Technology, Estonia.
G. A. Hussain, Aalto University, Finland
Department of Electrical Engineering
M. Hashmi, Department of Energy Systems at VTT Technical Research Centre of Finland
Department of Energy Systems at VTT Technical Research Centre of Finland
Published
2013-08-28
How to Cite
Shafiq, M., Lethonen, M., Kutt, L., Hussain, G. A., & Hashmi, M. (2013). Effect of Terminating Resistance on High Frequency Behaviour of Rogowski Coil for Transient Measurements. Elektronika Ir Elektrotechnika, 19(7), 22-28. https://doi.org/10.5755/j01.eee.19.7.2070
Section
ELECTRICAL ENGINEERING