Time domain analysis of switching transient fields in high voltage substations

B.U. Musa, W.H. Siew, M.D. Judd

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Switching operations of circuit breakers and disconnect switches generate transient currents propagating along the substation busbars. At the moment of switching, the busbars temporarily acts as antennae radiating transient electromagnetic fields within the substations. The radiated fields may interfere and disrupt normal operations of electronic equipment used within the substation for measurement, control and communication purposes. Hence there is the need to fully characterise the substation electromagnetic environment as early as the design stage of substation planning and operation to ensure safe operations of the electronic equipment. This paper deals with the computation of transient electromagnetic fields due to switching within a high voltage air-insulated substation (AIS) using the finite difference time domain (FDTD) method
Original languageEnglish
Number of pages3
Publication statusPublished - 21 Jan 2009
EventUHVNet Colloquium 2009 - Glasgow Caledonian University
Duration: 21 Jan 2009 → …


ConferenceUHVNet Colloquium 2009
CityGlasgow Caledonian University
Period21/01/09 → …


  • electromagnetic fields
  • switching transients
  • disconnect switch
  • finite difference time domain
  • (FDTD)
  • air-insulated substations


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