Active current and potential transducers

Buy article PDF
© The Institution of Electrical Engineers
Published 24/07/2012

Abstract

This paper advocates the use of active current and potential transducers for proper utilisation of fast protective relays. The active current transducer faithfully transforms the primary current containing a slowly decaying d.c. component, thereby providing a good transient response. The active potential transducer helps in fast extinction of ferroresonance oscillations. Results oflaboratory investigations are also presented.

Inspec keywords: transducers; relay protection; power system protection; transient response

Other keywords: active potential transducer; fast protective relays; ferroresonance oscillations; relay protection; active current transducer; transient response

Subjects: Convertors; Power system protection; Sensing devices and transducers; Signal processing and conditioning equipment and techniques

References

    1. 1)
      • Barchetti, H., Korponay, N., Mosbeck, A.: `Behaviour of currenf transformers, relays and protective devices subjected to transients', Paper 31-06, CIGRÉ, 1968, Paris
    2. 2)
      • Jagsich, K., Morvo, T., Wyss, H.: `Transient conditions in current transformers and their repercussion on the reduction of operating time protective devices', Paper 31-07, 1968, ibid.
    3. 3)
      • Wiszniewski, A.: `Laboratory simulation of power transformer inrush currents', Int. J. Electr. Eng. Educ.
    4. 4)
      • Kothari, G.C.: `High speed protective systems — simulation, analysis and some design considerations', 1974, Ph.D. thesis, Indian Institute of Science, Bangalore, India
    5. 5)
      • Wiszniewski, A., Izykowski, J.: Influence of ferroresonance suppression circuits upon the transient response of capacitive voltage transformers, Developments in power system protection, 1975, (IEE Conf. Publ. 125), p. 182-188
    6. 6)
      • Wiszniewski, A., Szafran, J.: Dynamic performance of analogue integrated transducers of reactance and resistance, Developments in power system protection, 1975, (IEE Conf. Publ. 125), p. 355-360
    7. 7)
      • Manchur, G., Harvey, S.M., Iwanusiw, O.W.: Development line protection with solid-state and digital techniques, Developments in power system protection, 1975, (IEE Conf. Publ. 125), p. 109-115
Print this page
This is a required field
Please enter a valid email address