(PES/IAS LECTURE): EXPERIMENTAL EVALUATION OF SWITCHING INDUCED TRANSFORMER RESONANCE MITIGATION 🗓

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(PES/IAS LECTURE): EXPERIMENTAL EVALUATION OF SWITCHING INDUCED TRANSFORMER RESONANCE MITIGATION


Please Join the Power and Energy and Industrial Applications Society for a guest lecture.

Dinner will be provided and PDH credits will be available upon request.

Vacuum circuit breaker switching induced transients can cause frequency induced medium voltage transformer dielectric damage where the two are coupled with short cable.  The most common mitigation method is to add a resistor/capacitor snubber at the transformer terminals.  While this approach has proved highly effective, there is little discussion of variations on the snubber application.  This paper describes the results of switching tests of a vacuum circuit breaker connected to a 1 MVA transformer through medium voltage cable.  First, the mechanism was investigated.  The tests show the resonance is induced by the broad band frequency content due to the high dv/dt of the circuit breaker current chopping and the chopping rate.    Next, snubber performance at various circuit locations was tested.  The snubber was most effective at the transformer medium voltage terminals and at the load side of the circuit breaker.

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  • No Admission Charge
  • Starts 08 March 2018 08:36 AM
  • Ends 27 March 2018 05:00 PM
  • All times are US/Michigan
  • Menu: Regular, Vegetarian