Calculation of VFTO and VFTC in the 550 kV GIS with Mitigation Techniques

  • M. Naga Jyothi
  • C. V. K. Bhanu
  • CH. RamyaEmail author
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 626)


The 550 kV gas-insulated substation is designed in the electromagnetic transient program (EMTP-RV) which simulated the design when the disconnector switch is operated. The operation of disconnector switch induces the VFTOs within a few nanoseconds, and the currents associated with VFTOs produce the electromagnetic fields. To reduce the very fast transients in the system, the mitigation techniques are to be implemented. In this paper, to reduce very fast transients in the system, the ferrite rings are installed at the disconnector switch. And it also have the impact on spark resistance and transformer entrance capacitance which will reduce the overvoltages.


VFTO VFTC Spark resistance Ferrite rings Transformer entrance capacitance EMTP 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Department of EEEVNR VJIETHyderabadIndia
  2. 2.GVPCEVizagIndia

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