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Field implementation of a transient voltage measuring facility using HV current transformers

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3 Author(s)
F. B. Siebrits ; Stellenbosch Univ., South Africa ; H. J. Vermeulen ; N. P. Tlhatlhetji

This paper discusses the design and field implementation of a facility for the measurement of wideband high voltage (HV) transient waveforms using a normally earthed substation current transformer (CT) configured in a transconductance voltage measuring topology. This implies that the HV waveforms are obtained by integrating the CT earth currents. The design, implementation and performance evaluation of dedicated instrumentation for the measurement, summation, integration and acquisition of multiple earth currents under field conditions are discussed. It is shown that a system with a measuring bandwidth of the order of 500 kHz can be realized.

Published in:

Africon Conference in Africa, 2002. IEEE AFRICON. 6th  (Volume:2 )

Date of Conference:

2-4 Oct. 2002