Novel virtual seismic assessment of a MV primary switchgear based on the new IEC/TS 62271-210

The new Technical Specification IEC/TS 62271-210 gives basic guidelines for the use of numerical analysis models, such as the Finite Element Method, to assess the seismic response of high voltage metal enclosed switchgear and controlgear assemblies. However, the authors observe a need for further study on the reliability of seismic simulations in order to be able to provide more accurate virtual models and to enhance customer confidence with simulation results. This work, performed over a switchgear assembly for medium voltage distribution, will cover the conditions for the numerical analysis to be applicable, the methodology to adequately create the Finite Element model, and the acceptance criteria of the seismic virtual models and its results. The technical paper guidelines advise on how to obtain a better acceptance of the new Technical Specification IEC/TS 62271-210 by means of an improved methodology where the numerical analysis criteria is further developed.