Seismic analyses for power transformers

Reliability and security of power systems, especially in areas prone to earthquakes, depends on the seismic withstand its components interaction these with other elements. All relevant products should be designed tested guarantee high performance. Option which is strongly recommended for qualification shake table test. This way very expensive some cases like transformers impossible due weight size. Because this numerical analyses can helpful determine dynamic characteristic system. more used during evaluation performance products, design phase. In paper a different approaches have been presented. first part article focus was put typical simulation methods defined by IEEE IEC standards. approach dedicated only transformer’s components. Due fact that standards do not provide clear information about fluid influence equipment events, investigations related oil filled were done summarized. Three investigated. First one built based Fluid-Structure Interaction (FSI) methodology. combination software (CFD, structural, coupling code) cover phonemes dynamics structural analyses. FSI methodology gives wide possibility but, it’s complex however, disadvantage objects. Next uses acoustic elements, where modeled as medium. method allows take into account simulations simplified way. The last Lagrange Euler element formulations (CEL) sloshing effect considered. including fluid.